projektuebersicht/CLAUDE.md

# CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

## Overview

Single-page app for tracking engineering projects across weekly sessions
("Sitzungen"). Vanilla JS/HTML/CSS frontend + Node.js/Express server. No build
step, no bundler, no tests. Data is persisted in a SQLite database
(`node:sqlite`, needs Node >= 22.13) at `sessions/projektuebersicht.db`.

**ONE** HTML entrypoint, served statically by Express:
- `Test.html` — the whole app (sidebar nav items, in order: Meine Aufgaben,
  **Projekte**, Wochenbericht, Auslastung, Projektbeteiligte, then
  **Einstellungen** and — for admins only — **Admin**). Served at `/`. It
  also contains the **Projektbereich** — the area of ONE project — as the
  tab `plan` (`<div id="plan">`), with its own sub-navigation (`.plan-nav`)
  over six sections: **Dashboard**, **Terminplan** (Gantt), **Aufgaben**
  (task/milestone list), **Leistung** (erbrachter Leistungswert, see below),
  **Dateien**, **Einstellungen** (project master data incl. honorar and the
  beauftragte Leistungsphasen). Opened via `openProjectPlan()` in
  `js/gantt.js`, which is now just `setPlanTarget()` + `showTab('plan')` —
  the same kind of switch as Dashboard → Projekte, sidebar and topbar
  stay put.
  **There used to be a separate `Projekte` tab next to the Projektboard.** It
  listed the very same projects a second time and offered a second editing
  mask for the very same fields. Both are now ONE list — the tab `board`,
  labelled **Projekte** (see "Eine Projektliste" below). The URL still reads `/Projektplan/<Name>?weekLabel=…&projNr=…`
  and the selected section still lives in the URL fragment (`…#aufgaben`),
  so both stay linkable. See "Projektbereich" below.
**`admin-users.html` no longer exists either.** It was a standalone
admin-only page with a hand-built header instead of the sidebar and its own
`checkAuthAndInit()` + role check. Its markup moved into `Test.html` as the
`benutzer` section of the Admin area, its `<style>` block into `styles.css`,
and `js/admin-users.js` now exports `renderAdminUsers()` instead of running
its own page entry. `GET /admin-users.html` 301-redirects to `/Admin#benutzer`.
The role check inside it is gone: the Admin area is unreachable for members
anyway (`showTab()` redirects them), and the endpoints are server-enforced.

**`project-plan.html` no longer exists.** It used to be a separate document
with a reduced imitation of the sidebar (plain `<a href>` links, no
Einstellungen/Admin sections) and its own `/load-all` fetch. Its markup moved
into `Test.html` (`#plan` plus the plan dialogs), its `<style>` block moved to
`public/plan-styles.css`, and its modules under `js/plan/` are now loaded by
`Test.html`. `GET /project-plan.html` 301-redirects to the new route.

The whole app requires login (see "Auth / security quirk" below):
`Test.html` shows a blocking login overlay (`checkAuthAndInit()` in
`js/auth.js`) until `GET /whoami` confirms a session.

`Test.html`'s navigation is a single persistent **left sidebar**
(`#headerMenu`/`.side-menu`) — it replaced the former top tab bar, a
separate `<header>`, and a separate off-canvas tool drawer, which have all
been merged into this one element (see "Frontend architecture" below).
After login the app lands on the **Dashboard ("Meine Aufgaben")**, not the
project list (`DEFAULT_TAB` in `js/globals.js`); the list remains
fully available as a sidebar nav item. The former "Projektbeteiligte" tab
(per-department `people`/`person_roles`/`person_absences` CRUD) has been
fully replaced by the global `users` table: it is now a read-only view of
that department's active users, and only admins manage team members, via
`admin-users.html` (see "Projektbeteiligte" below).

All UI strings/comments are German. Preserve German in
user-facing text.

## File structure

```
.
├── server.js                 # Express server + SQLite API
├── package.json             # deps: express, cors, plus pdfjs-dist/mammoth
│                            # (added for Protokoll-Import, see "### Protokolle")
├── .npmrc                   # omit=optional — hält pdfjs-dist's rein optionales
│                            # @napi-rs/canvas (nur für Seiten-Rendering, hier
│                            # ungenutzt) aus node_modules heraus
├── docker-compose.yml       # at repo ROOT; build context ., dockerfile Docker/Dockerfile
├── Docker/Dockerfile        # node:22-alpine (nötig für node:sqlite)
├── .dockerignore
├── public/
│   ├── Test.html            # main app (served at /)
│   ├── admin-users.html     # standalone admin-only user management page
│   ├── js/                  # shared modules (classic scripts, global fns)
│   │   ├── globals.js       # Konstanten (LPHS, ROLES, LPH-Farben, DEPARTMENTS, TAB_SLUGS) + db/currentDepartment
│   │   ├── utils.js         # esc, uid, Datum-/Differenz-Helfer, personIdForName,
│   │   │                    # peopleByRole, assignKey, weekSortKey +
│   │   │                    # renderProjektVerlauf() (die EINE Verlaufs-
│   │   │                    # Darstellung, von allen drei Stellen genutzt)
│   │   ├── ui.js            # LocalStorage-UI-State, Header-Collapse, Theme
│   │   ├── date-picker.js   # Datums-/Bereichspicker-Overlays
│   │   ├── server.js        # baseUrl, sendWeekToServer, deleteWeekFromServer, blobToDataUrl (global people list has no client write path anymore, see Persistence)
│   │   ├── auth.js          # currentUser, checkAuthAndInit (Login-Overlay), logout, renderUserBar
│   │   ├── store.js         # save/syncAllToServer, switchDepartment, load, seed
│   │   ├── weeks.js         # Wochen-Auswahl, Auto-Lock, -Löschung, unlockCurrentWeek (POST /unlock-week) —
│   │   │                    # Erzeugung/Klonen entfallen, siehe "Automatischer Sitzungswechsel"
│   │   ├── gantt.js         # GANTT-Diagramm (buildGanttHtml, openProjectPlan), geshared
│   │   ├── showmode.js      # Show-Mode (Präsentationsmodus)
│   │   ├── tabs-auth.js     # showTab (5 Tabs; kein Passwortschutz mehr, siehe Auth-Abschnitt)
│   │   ├── pdf.js           # drei PDF-Exporte (pdfmake): exportWochenberichtPDF()
│   │   │                    # ist die Tagesordnung als Bericht je Gewerk — Übersicht
│   │   │                    # + eine Akte je Projekt (A4 hochkant), exportSandboxPlanPDF()
│   │   │                    # der Balkenplan eines Planung-Terminplans (A3 quer),
│   │   │                    # exportProtokollPDF() das Besprechungsprotokoll eines
│   │   │                    # Projekts (A4 hochkant, Punkte gruppiert, neue gelb)
│   │   ├── projekt-wizard.js # Assistent "Neues Projekt" (sechs Schritte,
│   │   │                    # Gewerke, gefiltertes Team, Terminplan aus Honorar)
│   │   ├── auftrag.js       # Auftragsstatus (Anfrage→Angebot→beauftragt→
│   │   │                    # abgeschlossen), Chip/Auswahlfeld und der
│   │   │                    # Beauftragungs-Dialog
│   │   ├── backup.js        # downloadBackup (lädt SQLite-Snapshot von GET /backup)
│   │   ├── import.js        # importDb (Backup-Wiederherstellung über POST /import, admin-only)
│   │   └── init.js          # renderAll/initUiState + Seiteneinstieg hinter checkAuthAndInit() (nur Test.html)
│   │   ├── board/           # tab-specific: die Projektliste ("Projekte")
│   │   │   └── board.js     # Projektlisten-Rendering (Anzeige, BOARD_OPTS
│   │   │                    # .nurAnsicht), Reihenfolge/Löschen und der
│   │   │                    # Kommentar-Editor (Textfeld mit Verfasser/Zeitstempel,
│   │   │                    # ausdrücklichem Speichern und scrollbarem Verlauf der
│   │   │                    # früheren Sitzungen; auch vom Wochenbericht genutzt —
│   │   │                    # Bedienelemente adressieren ihr Feld über closest(),
│   │   │                    # nicht über IDs, da beide Tabs dieselben Projekte
│   │   │                    # rendern). Kürzel-Legende und Anwesenheit sind hier
│   │   │                    # entfallen (Anwesenheit siehe wochenbericht/)
│   │   ├── wochenbericht/   # tab-specific: Wochenbericht (Tagesordnung des
│   │   │                    # wöchentlichen Teammeetings — dort wird JEDES
│   │   │                    # Projekt angesehen, Vollständigkeit vor Filterung)
│   │   │   └── wochenbericht.js # Gruppierung "Neu kommentiert"/"Fortschritt"/
│   │   │                    # "Unverändert" per project_uid-Vergleich zur Vorwoche
│   │   │                    # (nutzt renderBoardDrawer/renderBoardRow aus board.js;
│   │   │                    # die Karten tragen ein farbiges Kopfband je
│   │   │                    # Änderungsart — .report-card-neu/-fortschritt,
│   │   │                    # Farben in --band-neu/--band-fortschritt — und
│   │   │                    # stellen die Schubladen-Blöcke dreispaltig; zeigen
│   │   │                    # über BERICHT_OPTS nur die beauftragten
│   │   │                    # Leistungsphasen, Rückfall auf alle wenn leer)
│   │   │                    # + renderProjectTimeline(): der aufklappbare
│   │   │                    # "Verlauf" je Projekt — die Kacheln der früheren
│   │   │                    # Sitzungen waagerecht und scrollbar, mit
│   │   │                    # Kommentar, LPH-Ständen, Terminen aus dem Plan
│   │   │                    # und Beteiligten JENER Woche; gegenüber der
│   │   │                    # Kachel davor geänderte Werte hervorgehoben
│   │   │                    # + Anwesenheitserfassung am Seitenfuß
│   │   │                    # (renderAttendance/toggleAttendance/setAllAttendance,
│   │   │                    # binär an/abwesend über currentWeek().people mit Zähler)
│   │   ├── people/          # tab-specific: Projektbeteiligte
│   │   │   └── people.js    # read-only Personen-Liste (aus db.globalPeople, kein CRUD/Drag-
│   │   │                    # and-Drop mehr) + abteilungsübergreifende Besetzung (admin-only)
│   │   ├── projects/        # Ablage-Logik der Projektliste (der eigene
│   │   │   └── projects.js  # Projekte-Tab ist entfallen): Drag-and-Drop,
│   │   │                    # reorderProjects(), delProjectFromList();
│   │   │                    # renderProjects() rendert nur noch, wenn
│   │   │                    # #projectsList existiert
│   │   ├── load/            # tab-specific: Auslastung
│   │   │   └── load.js      # Auslastungs-Tab als LASTBAND (Zeile je Person
│   │   │                    # und Rolle, Balken nach Projekten aufgeteilt),
│   │   │                    # LP-Modal, Neues-Projekt-Modal
│   │   │                    # (inkl. Auswahl der beauftragten Leistungsphasen,
│   │   │                    # p.beauftragteLP — dieselbe Liste wie im
│   │   │                    # Honorar-Dialog der Projektplan-Seite)
│   │   ├── dashboard/        # tab-specific: Meine Aufgaben
│   │   │   └── dashboard.js  # renderDashboard (GET /my-dashboard: offene TODOs + ausstehende Freigaben)
│   │   ├── settings/         # tab-specific: Einstellungen
│   │   │   └── settings.js   # NUR "Mein Konto": Stammdaten + Passwortwechsel
│   │   ├── admin/            # tab-specific: Admin (nur Administratoren)
│   │   │   └── admin.js      # Abschnitte Honorar, Auslastung (Schwellen/Skala/
│   │   │                     # Aufwandsvorlage), Termine & Sitzungen, Feiertage,
│   │   │                     # Aufgaben-Vorlagen, Betrieb & Sicherheit,
│   │   │                     # Datenbank & Sitzungen (Backup/Import/Löschen)
│   │   └── admin-users.js   # Abschnitt "Benutzerverwaltung" des Bereichs #admin
│   │                        # (renderAdminUsers, CRUD via /admin/users*)
│   ├── plan-styles.css      # Stile des Projektbereichs (früher <style> in project-plan.html)
│   ├── js/plan/             # Module des Projektbereichs (#plan in Test.html)
│   │   ├── plan-state.js    # PlanApp-Zustand, Datenladepath, savePlan, Toasts
│   │   ├── plan-sections.js # Bereichs-Navigation (showPlanSection, URL-Fragment)
│   │   │                    # + Dashboard-Karten (renderPlanDashboard)
│   │   ├── plan-info.js     # Status/Kommentar, Gruppe, amtierende LPH, LPH-%,
│   │   │                    # Beteiligten-Matrix (verteilt auf Dashboard+Einstellungen)
│   │   ├── plan-settings.js # Bereich "Einstellungen": Projektangaben, Honorar,
│   │   │                    # beauftragte Leistungsphasen (renderPlanSettings)
│   │   ├── plan-tasks.js    # Bereich "Aufgaben": Aufgaben-/Meilensteinliste
│   │   │                    # (renderPlanTasks; öffnet dieselben Dialoge wie das GANTT)
│   │   ├── plan-history.js  # Kommentar-Verlauf über alle Sitzungen (+ Vorwochen-Helfer)
│   │   ├── plan-templates.js # Aufgaben aus LPH-Vorlagen (lph_templates)
│   │   ├── plan-honorar.js  # Terminplan aus Honorar + beauftragten LPH errechnen
│   │   ├── plan-build-gantt.js # buildGanttHtml-Erweiterung (TODO- und Meilensteinzeilen)
│   │   ├── plan-gantt.js    # renderPlanGantt, Abhängigkeitslinien, Zoom, Ressourcen-Load
│   │   ├── plan-drag.js     # GANTT-Balken-Drag/Resize + TODO-/Meilenstein-Zeilen-Drag
│   │   ├── plan-modals.js   # TODO-, Meilenstein- und Abwesenheits-Modals; der
│   │   │                    # TODO-Dialog vereint "Erledigt"+Fortschritt in einem
│   │   │                    # Status-Segment (offen/arbeit/fertig -> done+progress),
│   │   │                    # Zuständige als Personen-Chips, Vorgänger eingeklappt
│   │   │                    # mit Suche und gesperrten Zirkelbezügen; Esc/Strg+Enter
│   │   │                    # und Hintergrund-Klick zentral für alle drei Dialoge
│   │   ├── plan-leistung.js # Bereich "Leistung": erbrachter Leistungswert
│   │   │                    # (Honorar × HOAI-Anteil × Fortschritt je Phase)
│   │   ├── plan-files.js    # Datei-Upload/-Liste/-Freigabe/-Kommentare (project-files-Endpunkte)
│   │   ├── plan-protokoll.js # Bereich "Protokolle": Besprechungsprotokolle
│   │   │                    # je Projekt, mit Fortschreiben offener Punkte
│   │   │                    # und gelber Neu-Markierung (project-protokolle-Endpunkte)
│   │   └── plan-schedule.js # Kritischer Pfad, Auto-Schedule, Mail-Link
│   ├── styles.css
│   └── dein_bild.ico
└── sessions/                # SQLite-DB; bind-mounted into Docker container
    └── projektuebersicht.db # node:sqlite database (WAL mode)
```

## Running

```bash
npm install
npm start                 # http://localhost:3003, or PORT=3004 if occupied
docker compose up --build # Docker variant (compose file is at repo root)
```

- PORT env var overrides default 3003 in `server.js`.
- Frontend must be served over HTTP: `baseUrl()` in `js/server.js` uses
  `window.location.origin` or falls back to `http://localhost:3003` when opened
  via `file://` (then only seed/demo data loads).
- Check `/health` returns `{ok:true}` after starting.

## Departments were retired (read this before trusting "department" elsewhere)

This file historically described `ELT`/`HLS`/`ARCH` as three fully separate
partitions — each with its OWN `weeks`, `projects`, and people list, switched
via a sidebar "Abteilung" selector and `switchDepartment()`. **That is no
longer true.** `migrateRemoveDepartmentPartition()` (`server.js`, runs
idempotently at every startup, guarded on `weeks` still having a `department`
column) merged all per-department weeks sharing the same label into one
global week (and merged same-`nr` projects across the former departments into
one project, tagging every former department as a `project_tags` entry —
confirmed deterministically, ELT→HLS→ARCH precedence, nothing silently
dropped). There is now **one shared week/project/people list**, full stop:
`GET /load-all` and `POST /save-week` take no `department` param,
`weeks`/`projects`/`week_people`/`attendance` have no `department` column,
`switchDepartment()` and the `.dept-tab` sidebar no longer exist client-side,
and `currentDepartment` is gone.

`VALID_DEPARTMENTS`/`DEPARTMENTS` (`ELT|HLS|ARCH`) still exist, but now mean
two different, narrower things:
- **A user's own discipline** — `users.department`, maintained in
  `admin-users.html`, used for staffing/team pickers.
- **A project's discipline(s)** — `project_gewerke` (one or more per
  project), see "Wochenbericht — Gewerke-Trennung" below.

**Known documentation debt:** many mentions of "department"/"Abteilung"
further down in this file — `db.globalPeople[currentDepartment]`,
`openProjectPlan()` building `/HLS/Projektplan/…`, `switchDepartment()`
behavior, the "Eine Projektliste"/"Projektbeteiligte" sections, etc. — still
describe the pre-migration, per-department architecture and were not swept
in the same pass that added this note. Treat any such mention as unverified
until checked against the actual code; do not assume it still applies.

## Automatischer Sitzungswechsel (read this before trusting "newWeek"/"cloneWeek" elsewhere)

Sessions ("Sitzungen", `weeks.label` = "KW XX / YYYY") are still the backbone
of the whole app — Wochenbericht, Board and Auslastung all key off the
current one, and the Wochenbericht's own week-over-week comparison/Verlauf
features (`renderProjektVerlauf()`, `classifyProjectChange()`, "Vergleich mit
KW…") depend on there being a fresh session every week. What changed: **a new
session is no longer a user action.** It used to be `newWeek()`/`cloneWeek()`
(`public/js/weeks.js`), triggered by two buttons in the Werkzeuge sidebar
group. Both are gone — on Erik's explicit call: "eine Sitzung stellt eine
Woche dar… kommt eine neue Woche kommt auch eine neue Sitzung unabhängig von
den Wochenberichten" (a session should follow the calendar, not whether
anyone happens to open the Wochenbericht that week), and the transition
should be **completely silent** — no toast, no confirmation.

**`ensureCurrentWeekRollover()` (`server.js`) replaces both functions,
server-side.** It runs once right after the HTTP server starts listening
(catches a rollover that should have happened while the server was down) and
then every hour via `setInterval` — deliberately NOT tied to any route or
tab, so a session change happens even if nobody ever opens the app that
week. (This is the first recurring background job in this codebase; there
was no prior pattern to mirror.) On each run: compute today's ISO
calendar-week/year (`getIsoWeekInfo()`, a straight port of `getWeekNumber()`
from `public/js/utils.js`, extended to also return the ISO week-*year*, which
can differ from the calendar year right at year boundaries); build the label
via `formatWeekLabel()` ("KW 05 / 2026" — the exact shape both the old
`validateWeekLabel()`'s regex and `weekSortKey()`/`weekSortKeyServer()`'s
parsing expect); compare against the chronologically latest **real** (i.e.
non-`SANDBOX_WEEK_LABEL`) session via the already-existing
`weekSortKeyServer()` (previously only used by `/my-dashboard`'s fallback).
If the calendar hasn't moved into a new week since then, it's a no-op — the
function is safe to call as often as the interval likes, and safe to run
again on every server restart without ever creating a duplicate.

**When a new week IS due, the reset is a deliberate, exact port of what
`cloneWeek()` used to do client-side** — same fields, same rationale, just
executed server-side against a plain JS object built from `loadWeeks()`
(itself already callable with no HTTP context) and written via
`saveWeekRelational()`/`serializeWeek()` (also already pure DB-writing
functions with zero dependency on `req`/`req.user` — confirmed by reading
both top to bottom before relying on it): deep-clone the latest real week,
give it a fresh `id` (`crypto.randomUUID()`, matching the ID scheme already
used elsewhere in server.js) and the new label/`date`
(`heuteIsoLokal()`), reset `attendance={}`, `locked=false`, drop `updatedAt`
(a carried-over revision would make `/save-week`'s conflict check reject the
brand-new label — moot here since this bypasses that route entirely, but the
field is dropped anyway for cleanliness); per project, a fresh
`id` (`crypto.randomUUID()`) and cleared `status`/`statusAuthor`/`statusAt`/
`besprochen`/`statusState`. Everything else — Beteiligte, `lph`, `assign`,
the whole `plan` (todos/milestones keep THEIR OWN ids unchanged, only the
owning project's id changes), `project_uid`, `honorar`, `beauftragteLP`,
`gewerke`, tags — carries over untouched, exactly as `cloneWeek()` always
left it.

**Locking**: there was, and is, no server-side equivalent of
`applyAutoLock()` (still client-side-only, still exactly as before). The
rollover replicates its invariant itself instead of relying on some client
being open to do it: once the new week is saved, if
`app_settings.autoLockAktiv` is on (read via the already-existing
`readAppSettings()`), every other real week gets `locked=1` in one `UPDATE`.
Turning `autoLockAktiv` off does not stop new sessions from being created —
only stops them from locking everything else, same distinction the setting
already made for `applyAutoLock()`.

**Fresh-install edge case**: if there is no real week at all yet (nothing to
clone), the rollover falls back to building an empty one — global people
list, no projects — mirroring what `newWeek()` used to produce, so a brand
new deployment still ends up with a session without needing a button to
press.

**Verified live** against a scratch copy of the production DB before ever
touching the real one (the real database's latest session, KW 33/2026,
predated "today" by seven ISO weeks — restarting the server for real was
always going to trigger a real jump to KW 40/2026, so correctness was
checked against a copy first): all 29 real projects carried over with fresh
project ids, comments/`besprochen` cleared, LPH values and `plan_todos`
(with their original todo ids) preserved byte-for-byte, older sessions
correctly locked, a second server start produced no duplicate, and disabling
`autoLockAktiv` left the previous latest week unlocked as expected.

`newWeek()`, `cloneWeek()`, and `validateWeekLabel()` are gone from
`public/js/weeks.js` (confirmed unreferenced anywhere else before removal).
**Known documentation debt**, same caveat as the department note above: this
file still has scattered comments elsewhere (in `board.js`, `utils.js`,
`wochenbericht.js`, `plan-state.js`, `plan-history.js`,
`plan-build-gantt.js`, and a few spots in this very file) that name
`cloneWeek()`/`newWeek()` as the live mechanism for "project ids change every
week"/"a new session starts with an empty comment" and similar — the
underlying *facts* they describe are still true, only the mechanism producing
them moved to `ensureCurrentWeekRollover()`. Treat a `cloneWeek()`/`newWeek()`
mention elsewhere as describing that historical mechanism, not code that
still exists, until it's been swept.

## Server API (`server.js`)

Auth levels (see "Auth / security quirk" below for the mechanism): **Public**
(no session needed) / **Auth** (any valid session) / **Admin** (`role='admin'`,
via `requireRole('admin')`). HTML shell routes stay Public — they only ever
serve static markup, never data; the actual security boundary is the 401/403
on the JSON endpoints.

- `GET /` → `Test.html`; `GET /health`. Public.
- Deep links per department + tab: `GET /<Dept>/<Tab>` → `Test.html`, e.g.
  `/HLS/Auslastung` or `/ELT/Projektübersicht`. Public. Tab slugs
  (`TAB_SLUGS` in `js/globals.js`, `VALID_TAB_SLUGS` in `server.js`) are
  `Projektübersicht|Wochenbericht|Auslastung|Projekte|Projektbeteiligte|MeineAufgaben|Einstellungen|Admin`;
  anything else returns 404. Exception: `GET /<Dept>/Projektplan(/<ProjName>)?`
  (`PLAN_SLUG`) serves `Test.html` as well (the Projektbereich is a tab of it
  now, selected client-side by `applyUrlRoute()`), with
  `weekLabel|projNr` as query params (the project name is a readable path
  segment only; identification happens via weekLabel + projNr). The frontend
  reads/writes these routes via `applyUrlRoute()`/`updateRouteUrl()` in
  `js/ui.js` and all static assets in the HTML use **absolute** paths
  (`/js/...`, `/styles.css`) so they resolve on nested routes. `admin-users.html`
  itself is just a static file under `public/` (no dedicated server route/slug).
- `POST /login {username,password}` → Public. Verifies against `users` (scrypt,
  see Auth section), creates a `user_sessions` row and sets the session cookie.
  Same generic error for wrong username, wrong password, or inactive account
  (no user enumeration).
- `POST /logout` → Auth. Deletes the current session row, clears the cookie.
- `GET /whoami` → Public. Returns `{ok:true, user: req.user || null}` — the
  basis for the client-side login overlay (`checkAuthAndInit()`).
- `POST /change-password {currentPassword, newPassword}` → Auth. Requires the
  current password even when `must_change_password` is set; new password ≥ 8
  chars. Its UI is `#passwordModal` (`js/auth.js`) — reachable from
  Einstellungen → Mein Konto, and shown non-dismissibly right after login when
  the account carries `must_change_password`. Until that dialog existed the
  endpoint had **no** caller at all: every new and every reset account got the
  flag, `admin-users.html` displayed "Passwortwechsel erforderlich", and
  nobody could act on it.
- `POST /change-email {email}` → Auth. Scoped to `req.user.id` (like
  `/change-password`, not a body-supplied user id), no admin role needed.
  Rejects an empty value with 400; no format validation beyond trimming
  (same permissiveness as the admin path below). Its UI is the inline
  E-Mail field in Einstellungen → Mein Konto (`js/settings/settings.js`,
  `submitEmailChange()`) — until this route existed the address was
  view-only there and only an admin could set it via `PATCH
  /admin/users/:id`; an admin can still set/correct it there, e.g. for a
  colleague who hasn't logged in yet.
- `GET /admin/users` → Admin. Lists all users (incl. inactive) with their
  `roles` (discipline roles from `user_roles`, see below), without password
  fields or absences (those are loaded separately, see next bullet).
- `GET /admin/users/:id/absences` → Admin. Lists one user's absences
  (`id, start, end, type, note`, sorted by `start`) from `user_absences` —
  loaded on demand by the admin-users.js edit modal, not embedded in
  `GET /admin/users` (would bloat the list response).
- `POST /admin/users {username, displayName, email?, role?, personId?, department, initials?, roles?, password?, generatePassword?}`
  → Admin. Creates a user with `must_change_password=1`; `department` is
  **required** (must be a `VALID_DEPARTMENTS` value, 400 otherwise — empty is
  only tolerated for the pre-existing bootstrap admin, not for new accounts);
  `initials` is the short board-column label, stored as given (empty is
  allowed — `loadGlobalPeople()` falls back to `username` at read time, see
  Persistence); `roles` is an array validated against
  `VALID_DISCIPLINE_ROLES = new Set(['Planung','Projektleitung','Bauüberwachung'])`
  (400 on an unknown role) and written to `user_roles`. Password either given
  explicitly (≥ 8 chars) or auto-generated (`generatePassword:true`, returned
  once as `generatedPassword`).
- `PATCH /admin/users/:id {displayName?, email?, role?, active?, personId?, department?, initials?, roles?}` →
  Admin. Partial update; same `department`/`roles` validation as `POST`
  (only when the field is present); `roles` is a replace-all (delete then
  re-insert `user_roles`, same pattern as the old `serializeGlobalPeople`).
  An admin can't deactivate or demote their own account. Deactivating a user
  immediately deletes all their sessions. A `person_id` collision (now
  globally unique, see Persistence) is caught and returned as 409.
- `POST /admin/users/:id/reset-password` → Admin. Sets a new random password,
  forces `must_change_password=1`, deletes all sessions of that user (forces
  re-login), returns the plaintext once as `generatedPassword`.
- `DELETE /admin/users/:id[?hard=1]` → Admin. Default is a soft-delete
  (`active=0` + delete sessions); `?hard=1` permanently deletes the row, but
  only if the user is referenced nowhere in `project_files.uploaded_by_user_id`
  / `project_file_reviewers.user_id` / `project_file_comments.user_id` (else
  409). An admin can never delete their own account (soft or hard).
- `GET /users` → Auth (not admin-only). Lists active users
  (`id, username, displayName, email, personId, department, initials, roles`)
  — used both by the reviewer-picker in the file upload UI and by the
  cross-department staffing picker in the (now read-only) Projektbeteiligte
  tab (`js/people/people.js`) — deliberately separate from `/admin/users`,
  which is admin-only and exposes more fields/inactive accounts.
- `POST /users/:id/absences {start, end, type, note?}` → Auth (not
  admin-only — matches the previous permission level: any logged-in user
  maintains absences in the Projektbeteiligte tab / on the Gantt page).
  Requires `start`/`end` (400 otherwise); server generates the absence `id`
  (`crypto.randomUUID()`).
- `DELETE /users/:id/absences/:absenceId` → Auth. Idempotent (no error if the
  absence is already gone).
- `GET /load-all` → Auth. `{weeks:[weekObj], people:[personObj], sandboxPlans:[projectObj], sandboxUpdatedAt}` — **no
  `department` param**: `migrateRemoveDepartmentPartition()` (see "Departments
  were retired" below) dissolved the former per-department partitioning, so
  this returns the one shared set of weeks and the one shared people list
  (`loadGlobalPeople()`, see Persistence — still filtered to `active=1`, just
  not to a department anymore); weeks are full JSON week objects (id, label,
  date, locked, updatedAt, people, attendance, projects), sorted by label.
  `sandboxPlans`/`sandboxUpdatedAt` are the reserved Planung-Sandbox "week"
  (`SANDBOX_WEEK_LABEL`) split OUT of `weeks[]` — see "Planung —
  projektunabhängige Terminplan-Sandbox" below — so it can never leak into
  any code that iterates `weeks`.
- `POST /save-week {week, baseUpdatedAt}` → Auth. Upserts one week (JSON
  object, keyed by label only). Used by `sendWeekToServer()`. The
  client sends its local revision in `baseUpdatedAt` (the `updatedAt` value
  from `load-all`); the server compares it to `weeks.updated_at` before writing
  and answers `409 {ok:false, conflict:true, error, updatedAt}` if someone else
  saved the week in the meantime. A save with a **non-empty** base for a week
  the server no longer knows is also rejected with 409 ("wurde gelöscht") so a
  deleted week can't silently resurrect; only new weeks (empty/missing base)
  pass. On success it returns `{ok:true, updatedAt}` (the new revision), which
  the client stores as the new sync base. Clients WITHOUT `baseUpdatedAt` (old
  versions) always pass. The check runs synchronously in-process before the
  write transaction (no race between check and write).
- `POST /delete-week {department, label}` → Admin. Deletes the week; missing
  label yields 400, missing week tolerates with `deleted:false`.
- `POST /unlock-week {department, label}` → Admin. Unlocks a locked week
  (`locked=0`, new `updated_at` revision, same convention as `/save-week`) —
  replaces the formerly client-only unlock logic
  (`unlockCurrentWeek()`/`js/weeks.js`); 404 if the week doesn't exist.
- `GET /my-dashboard` → Auth. Liefert `tasks` (persönlich zugewiesene offene
  Aufgaben), **`projectDates`** (Aufgaben und Meilensteine der Projekte, denen
  der Aufrufer zugeordnet ist — siehe „Dashboard" unten), `pendingReviews` und
  `colleagueAbsences`. Aggregates, per department (`ELT`/`HLS`/`ARCH`),
  the currently unlocked week's open (`done=0`) `plan_todos` assigned to the
  caller's `person_id` (sorted by due date, empty dates last), plus
  `pendingReviews` — files where the caller is a `pending` reviewer
  (`project_file_reviewers` joined with `project_files`/`users`). Normally
  exactly one unlocked week exists per department (`applyAutoLock()`
  invariant); if that invariant is violated (0 or >1 unlocked weeks),
  `weekSortKeyServer()` picks the most recent week as a fallback. A user
  without a matching `person_id` gets an empty task list per department (no
  error).
- `POST /project-files?department=&projectNr=&projectName=&filename=&reviewers=id1,id2`
  → Auth. Raw binary body like `/import` (`express.raw({type:'*/*', limit:'200mb'})`).
  Rejects an invalid/missing `department` (stricter than `departmentKey()`'s
  ELT-fallback — an upload must never land in the wrong department silently)
  and an empty `projectNr` (400). Reviewer IDs are parsed from the
  comma-separated query param, deduplicated, filtered to active users, and the
  uploader is removed (no self-review); at least one reviewer must remain
  (400 otherwise). See "File uploads" below for storage/path details.
- `GET /project-files?department=&projectNr=` → Auth. Lists a project's files
  incl. uploader name, per-reviewer decision, and comment count.
- `GET /project-files/:id/download` → Auth. `res.download()` from
  `sessions/uploads/<department>/<stored_name>`, with `original_filename` only
  used as the download's `Content-Disposition` filename.
- `POST /project-files/:id/review {decision:'approved'|'rejected', note?}` →
  Auth. Only for a caller who is an eligible `pending` reviewer of that file;
  409 if the file's overall status is already terminal
  (`approved`/`rejected`). Recomputes the overall status: any `rejected`
  decision → `rejected` immediately; all reviewers `approved` → `approved`;
  otherwise stays `pending`.
- `GET /project-files/:id/comments` → Auth. Chronological comment list.
- `POST /project-files/:id/comments {body}` → Auth. Any logged-in user may
  comment, not just the assigned reviewers.
- `DELETE /project-files/:id` → Auth (not admin-only, but scoped): allowed for
  the uploader while the file is still `pending`, or for an admin at any time
  (403 otherwise). Deletes the DB row (and its reviewer/comment rows, deleted
  explicitly rather than via FK cascade — see Persistence section) before
  best-effort deleting the physical file.
- `GET /project-protokolle?projectNr=` → Auth. Summary list of a project's
  Protokolle (counts of open/erledigt points, Teilnehmer count), sorted by
  `nummer` descending — see "### Protokolle" below.
- `GET /project-protokolle/:id` → Auth. One full Protokoll incl. all
  `teilnehmer`/`punkte`.
- `POST /project-protokolle?projectNr=&projectName=&weekLabel=
  {datum, betreff, ort, teilnehmer}` → Auth. Creates a new Protokoll;
  `nummer` is server-assigned (`MAX(nummer)+1` for that `project_nr`), and
  every still-open (`erledigt=0`) point of that project's most recently
  created Protokoll is copied into it (the "Fortschreiben" — see "###
  Protokolle").
- `PUT /project-protokolle/:id {datum, betreff, ort, teilnehmer, punkte}` →
  Auth. Replaces the Protokoll's Teilnehmer/Punkte wholesale (delete +
  re-insert, one transaction) — the same "whole object" pattern
  `saveWeekRelational()` uses for a week, not a REST route per field. A point
  with a known `id` keeps its server-tracked `stamm_id`/`neu`; a point
  without one is treated as newly added (`neu=1`).
- `DELETE /project-protokolle/:id` → Auth (not admin-only — same permission
  level as deleting a todo/milestone). Idempotent.
- `POST /project-protokolle/import?projectNr=&projectName=&weekLabel=&datum=
  &betreff=&ort=&filename=&erkennung=` → Auth. Raw-binary body like `POST
  /project-files` (`express.raw`, 50 MB limit; the route is listed in
  `RAW_BODY_ROUTES` so the global `express.json()` parser never touches it —
  see "JSON-Dateien lassen sich hochladen" below, same reasoning). Extracts
  text from an uploaded `.pdf`/`.docx` (400 on any other extension). `erkennung`
  (`'chatgpt'|'claude'`, optional) tries KI-gestützte Erkennung first,
  falling back to the `erkennePunkteAusText()` heuristic on any failure —
  anything else in that param skips straight to the heuristic; creates the
  Protokoll through the same `legeProtokollAn()` path as the plain `POST`
  above — see "### Protokolle" below for both recognition paths and the
  PDF-library history. Response includes `erkennungsart`/`erkennungshinweis`.
- `GET /project-protokolle/:id/quelldatei` → Auth. Downloads the original
  uploaded file of an imported Protokoll (404 if it wasn't imported) — the
  Protokoll equivalent of `GET /project-files/:id/download`.
- `GET /my-ai-settings` → Auth (not admin-only — scoped to `req.user.id`,
  same pattern as `/change-email`). Returns, per provider, only whether an
  API key is stored (`configured: bool`) plus the — non-secret — `apiUrl`
  to pre-fill an edit form; never the key itself. `PUT /my-ai-settings
  {chatgpt?: {apiKey?, apiUrl?}, claude?: {apiKey?, apiUrl?}}` → Auth, same
  scoping. A given `apiKey` replaces it (empty string clears it); a given
  `apiUrl` is validated via `istGueltigeAiUrl()` — `https://` always passes,
  `http://` only on the loopback (`localhost`/`127.0.0.1`/`::1`), anything
  else is 400 — or clears an override back to the default endpoint; an
  omitted sub-field is left untouched. See "### Protokolle" below for why
  each account keeps its own key rather than one firmenweit, and for why
  plain `http` is allowed on the loopback.
- `POST /my-ai-settings/test {provider}` → Auth, same scoping. "Neu
  verbinden": actually exercises the caller's saved key/URL for that
  provider via `erkennePunkteMitKI()` (a short dummy text, the same code
  path an import uses). Responds `{ok:true}` or, on any failure,
  `{ok:false, error}` with HTTP 200 — a failed test is an expected outcome,
  not a server error. See "### Protokolle" below.
- `GET /app-settings` → **Auth** (not admin-only — the frontend *computes*
  with these: Auslastung, ampel, Honorar schedule). `PUT /app-settings` →
  **Admin**, partial update. `APP_SETTING_DEFS` in `server.js` is the single
  place a key is defined (default, parser, label); `readAppSettings()` always
  returns a complete object, falling back to the default for a missing or
  unusable row. Unknown keys and invalid values are rejected with 400 *before*
  anything is written, and gelb > rot is refused outright. Keys:
  `stundensatz`, `arbeitsstundenProTag`, `vollzeitStundenProWoche`,
  `auslastungSchwelleGelb`, `auslastungSchwelleRot`, `referenzHonorar`,
  `verteilzeitraumWochen`,
  `aufwandVorlage` (JSON, validated against `VALID_LPHS`/
  `VALID_DISCIPLINE_ROLES`, values 0–1), `autoLockAktiv`,
  `feiertagBundesland`, `maxBackups`, `sessionTage`, `loginMaxVersuche`,
  `loginSperreMinuten`.
- `GET /holidays` → Auth; `POST /holidays {date,name}` / `DELETE /holidays/:date`
  → Admin. `date` is the primary key, so posting an existing date just renames
  it. `GET /holidays` also returns `states` (the 16 German states), since the
  server is the single place that list lives and the maintenance mask needs it
  right away.
- `GET /holidays/suggest?year=&state=` → Auth; `POST /holidays/import {year,state}`
  → Admin. German public holidays are **computed**, not fetched from a web
  service: `holidaysForYear()` in `server.js` combines fixed dates with
  everything hanging off Easter (`easterSunday()`, the Gaussian/Meeus formula;
  `bussUndBettag()` for Saxony). No external dependency, no internet access on
  the server — which a shop network does not necessarily have — and the result
  is deterministic and works offline. The suggestion route marks days already
  stored (`vorhanden`); the import uses `INSERT OR IGNORE`, so a hand-edited
  name on an existing date survives. Nothing is written automatically: a
  holiday shifts every computed schedule, so an admin confirms it. The state
  is remembered in `app_settings.feiertagBundesland` (default `NW`).
  Municipality-level cases (Fronleichnam in parts of SN/TH, Mariä Himmelfahrt
  in Bavarian catholic municipalities) are deliberately left out — they cannot
  be derived from the state and can be added by hand.
- `GET /backup` → **Admin**. Consistent SQLite snapshot (`VACUUM INTO`, WAL-safe) as
  a `.db` file download (temp file in `os.tmpdir()`, deleted after send). Used
  by `downloadBackup()` in `js/backup.js`. Additionally, on server startup the
  server writes a timestamped copy to `sessions/backups/` (also via
  `VACUUM INTO`) and keeps only the `MAX_BACKUPS` newest ones (default 10).
- `POST /import` → Admin. Restores the whole database from a `.db` backup file
  sent as a raw binary body (`express.raw`, limit 100 MB). Validates the schema
  (`pragma_table_info` on every table, exact column match vs. live DB), then
  swaps all data via `ATTACH DATABASE …` + DELETE/INSERT-SELECT inside one
  transaction (rollback on error). Immediately BEFORE the restore the server
  saves a fresh auto-backup of the current state via `runAutoBackup()` (so a
  restore can be undone), then performs the swap. Used by `importDb()` in
  `js/import.js` (the "DB Import" button is only shown to admins,
  `renderUserBar()` in `js/auth.js`, and the route itself is admin-only
  regardless of UI). Note: `IMPORT_TABLES` in `server.js` lists the 16
  original per-week/session relational tables (`weeks` … `plan_milestone_deps`)
  plus `project_protokolle`/`protokoll_teilnehmer`/`protokoll_punkte` (added
  with the Protokolle feature — unlike `project_files`, a Protokoll has no
  on-disk component, so it's safe to include in a restore, see "###
  Protokolle"), i.e. the 7 auth/user/file tables (`users`, `user_sessions`,
  `user_roles`, `user_absences`, `project_files`, `project_file_reviewers`,
  `project_file_comments`) are **not** touched by import/export — a DB restore
  never overwrites accounts, roles, absences, sessions, or file-review state.
  (`people`/`person_roles`/`person_absences` were removed from `IMPORT_TABLES`
  along with the tables themselves, see Persistence.)
- `ELT|HLS|ARCH` (`VALID_DEPARTMENTS` in `server.js`, `DEPARTMENTS` in
  `js/globals.js`) are **no longer a partitioning of weeks/projects/people** —
  see "Departments were retired" below. They still identify a **user's own**
  discipline (`users.department`) and, since the Wochenbericht-Gewerke feature,
  a **project's** discipline(s) (`project_gewerke` — see "Wochenbericht —
  Gewerke-Trennung" below); `VALID_DEPARTMENTS` is the shared value set for
  both.
- Static assets get `Cache-Control: no-store`.
- JSON body limit is 2 MB.

## Persistence (SQLite)

- Data lives in `sessions/projektuebersicht.db` (`node:sqlite` `DatabaseSync`,
  WAL mode, `PRAGMA foreign_keys = ON`, `PRAGMA busy_timeout = 5000` to avoid
  `SQLITE_BUSY` under concurrent writers), created automatically. The schema is
  **fully relational** (26 tables, in the unconditional `CREATE TABLE`
  block at the top of `server.js`) instead of one big JSON document per week:
  - `weeks` (department, label, week_id, date, locked, updated_at; PK
    `(department,label)`) — `updated_at` is the revision timestamp for the
    single-user conflict handling (see `/save-week` above)
  - `week_people` / `week_people_roles` — person copies per week (`array_order`
    keeps the list order, `role_order` the role array order)
  - `attendance` — présence per week/person
  - `projects` — u. a. `groesse` (REAL 0–1, Ersatz für ein fehlendes Honorar
    in der Auslastungsrechnung, siehe "Auslastung — Wochenstunden statt
    Faktoren"); (`array_order` = position in the JSON array, `order_value` = the
    `p.order` field, which is only unique *within a group*, not globally!;
    `besprochen` = ticked off in the team meeting — it belongs to the
    SESSION, not the project, so `cloneWeek()` resets it: a new session
    starts with an empty agenda)
  - `project_gewerke` (week_label, project_id, gewerk; PK über alle drei) —
    die Fachbereiche, die das Projekt bearbeiten (`ELT`/`HLS`/`ARCH`, dieselben
    Werte wie `users.department`); steuert die Auswahl der Beteiligten im
    Assistenten
  - `project_lph`, `project_assign` (person_id|role keys split into columns),
    `project_aufwand` (LP effort per role), `project_aktuelle_lp`
  - `project_plan`, `plan_people`, `plan_todos` / `plan_todo_assignees` /
    `plan_todo_deps`, `plan_milestones` (`position` column!) /
    `plan_milestone_deps`
  - `users` (id, username UNIQUE, display_name, email, password_hash,
    password_salt, role `'admin'|'member'`, person_id, active,
    must_change_password, created_at, updated_at, **department, initials**) +
    index on `person_id` **and** `CREATE UNIQUE INDEX … ON users(person_id)
    WHERE person_id != ''` (see `ensureUserPersonIdUniqueIndex()` below) —
    `capacity_hours` (contractual hours per week, added by
    `migrateUsersDepartment()`; `0` = not maintained and counts as a full
    position),
    `person_id = personIdForName(display_name)`, the bridge to the existing
    `person_id`-based assignment scheme (e.g. `plan_todo_assignees`) so
    dashboard aggregation needs no schema change there; `department` is a
    `VALID_DEPARTMENTS` value (empty only tolerated for the pre-existing
    bootstrap admin), `initials` is the short board-column label
  - `user_roles` (user_id, role, role_order; PK `(user_id,role)`, FK →
    `users(id) ON DELETE CASCADE`) — discipline roles
    (`Planung`/`Projektleitung`/`Bauüberwachung`, `VALID_DISCIPLINE_ROLES`)
  - `user_absences` (user_id, id, start, end, type, note; PK `(user_id,id)`,
    FK → `users(id) ON DELETE CASCADE`)
  - `user_ai_keys` (user_id, provider, api_key, api_url; PK
    `(user_id,provider)`, FK → `users(id) ON DELETE CASCADE`) — each
    account's own OpenAI/Claude API key + optional API-URL override for the
    Protokoll-Import's KI-gestützte Erkennung, see "### Protokolle"
  - `user_sessions` (token PK, user_id, created_at, last_seen_at, expires_at)
  - `holidays` (date PK `YYYY-MM-DD`, name) — firmenweite arbeitsfreie Tage.
    A table rather than a JSON value in `app_settings` because it is a list
    that grows and is maintained entry by entry. It feeds `HOLIDAYS`
    (`js/globals.js`) and thus `isWorkday()`/`workdaysBetween()`/
    `addWorkdays()` in `public/js/utils.js` — i.e. the Honorar schedule and
    the Projektbereich's resource load. Dependency-based scheduling
    (Auto-Schedule) still counts calendar days, as it always did.
  - `project_files` (id PK, department, project_nr, project_name,
    original_filename, stored_name, content_type, size_bytes,
    uploaded_by_user_id, status `'pending'|'approved'|'rejected'`, created_at,
    updated_at) + index on `(department, project_nr)`
  - `project_file_reviewers` (file_id, user_id, decision `'pending'|'approved'|'rejected'`,
    decided_at, note; PK `(file_id, user_id)`) + index on `(user_id, decision)`
  - `project_file_comments` (id PK, file_id, user_id, body, created_at)
  - `project_protokolle` (id PK, project_nr, project_name, nummer, datum,
    betreff, ort, verfasser_user_id, week_label, created_at, updated_at) +
    index on `project_nr` — scoped like `project_files`, see "### Protokolle"
  - `protokoll_teilnehmer` (id PK, protokoll_id, name, firma, anwesend,
    array_order) + index on `protokoll_id`
  - `protokoll_punkte` (id PK, protokoll_id, stamm_id, nummer, gruppe, neu,
    thema, text, zustaendig, termin, erledigt, erstellt_am, array_order) +
    index on `protokoll_id` — `stamm_id` links copies of "the same" point
    across Protokolle (the "Fortschreiben"), `nummer`/`gruppe` are free text.
    `erstellt_am` (added on Erik's follow-up request, migration
    `migrateAddProtokollPunktErstelltAm()`, existing rows stay empty — their
    real origin date can't be reconstructed) is set exactly once, the moment
    a point is first saved — either the owning Protokoll's own `datum` (a
    point added by hand or newly recognized on import) — and, like
    `stamm_id`, carried forward UNCHANGED by the Fortschreiben-copy in
    `legeProtokollAn()` and by `PUT /project-protokolle/:id` (which looks up
    the existing row by `id` and keeps its stored value rather than trusting
    whatever the client sends): a Fortschreiben copy or an ordinary edit of
    an existing point is not a new creation, so its original date must not
    move just because it now also appears in a later Protokoll. Only a point
    with no matching existing `id` gets a *fresh* `erstellt_am`, from the
    `datum` being saved in that very request — the same rule `neu`/`stamm_id`
    already follow for telling "genuinely new" apart from "carried over".

  `people` / `person_roles` / `person_absences` (the former per-department
  global-people schema) are **gone** from the live schema — they are only
  ever created transiently by `migrateLegacySchema()` when converting a very
  old single-JSON-document DB, and then immediately retired by
  `migrateRetirePeopleTablesIntoUsers()` (see Migration below) in the same
  startup. `loadGlobalPeople(department)` now reads exclusively from
  `users`/`user_roles`/`user_absences` (`WHERE department = ? AND active = 1`)
  and returns the unchanged shape `{id, name, fullName, email, role:[],
  absences:[{id,start,end,type,note}]}` (`id`/`name`/`fullName` map to
  `person_id`/`initials||username`/`display_name`), so `GET /load-all`,
  `board.js`, `load.js`, `gantt.js`, `plan-modals.js` needed no changes.

  **FK constraint note:** although `PRAGMA foreign_keys = ON` is set, only
  `user_sessions.user_id`, `user_roles.user_id`, `user_absences.user_id` and
  `user_ai_keys.user_id` have a declared `FOREIGN KEY … REFERENCES
  users(id) ON DELETE CASCADE` (deleting a user auto-deletes their
  sessions/roles/absences/AI keys). Every other
  table — the 16 original per-week/session tables, the 4 file-related ones
  (`users`, `project_files`, `project_file_reviewers`,
  `project_file_comments`) and the 3 Protokolle tables (`project_protokolle`,
  `protokoll_teilnehmer`, `protokoll_punkte`) — has **no** declared FK
  constraints; this is a deliberate continuation of the pre-existing
  convention (referential
  integrity is enforced in application code, e.g. `deleteWeekData()`), not an
  oversight. `DELETE /project-files/:id` therefore deletes
  `project_file_comments` and `project_file_reviewers` rows explicitly before
  the `project_files` row.
- The HTTP API stays JSON-shaped: `serializeWeek()` splits an incoming week
  object across the tables inside a transaction, `loadWeeks()` /
  `loadGlobalPeople()` (re)assemble week/people data on read.
  `saveWeekRelational()` deletes the week's rows first (`deleteWeekData()`,
  note `weeks` uses `label`, all child tables `week_label`) and returns the
  new `updated_at` revision written by `serializeWeek()`. There is no
  `serializeGlobalPeople()` anymore — the global people list has no write
  path of its own; it is a read-only projection of `users`/`user_roles`/
  `user_absences`, which are written only through `/admin/users*` and
  `/users/:id/absences*`.
- Migration on every start (idempotent, run in this order after schema
  creation):
  1. `migrateLegacySchema()` converts a DB from the old single-JSON-document
     format (detected via a `data` column in `weeks`): it reads the
     documents, drops all tables, recreates the (then-current, including the
     now-retired `people`/`person_roles`/`person_absences`) relational schema
     and inserts everything in one transaction.
  2. `migrateWeeksUpdatedAt()` adds the `updated_at` column to `weeks`
     (idempotent, `ALTER TABLE … ADD COLUMN`). Legacy rows keep
     `updated_at = ''`, so the first client save with an empty
     `baseUpdatedAt` matches and only then a real revision is written.
  3. `migrateUsersDepartment()` adds the `department`/`initials` columns to
     `users` if missing (idempotent `ALTER TABLE … ADD COLUMN`, same pattern
     as step 2).
  4. `ensureUserPersonIdUniqueIndex()` first calls `dedupeUserPersonIds()` —
     `person_id` used to only need to be unique *per department* (the old
     `people` table); now that it globally identifies a user, any existing
     duplicates are resolved by appending `_<user id>` to every row but the
     first (logged with `console.warn`) — then creates
     `idx_users_person_id_unique` (a partial unique index skipping empty
     `person_id`).
  5. `migrateRetirePeopleTablesIntoUsers()` runs only while a `people` table
     still exists (no-op/idempotent otherwise): for every legacy `people` row
     it looks up a `users` row by `(department, person_id)`; on a match it
     copies that person's `person_roles` into `user_roles`
     (`INSERT OR IGNORE`); on no match the row is only logged to the console
     as unmatched — **no placeholder user is created** for it (would pollute
     the user list with non-loginable dead entries). Historical `person_absences`
     rows are **not** migrated (`serializeGlobalPeople()`'s old code wrote
     `String(absenceObject)`, i.e. literally `"[object Object]"`, into that
     column, so there was nothing meaningful to carry over). It then drops
     `people`, `person_roles`, and `person_absences`. Historical weeks are
     unaffected either way: `week_people`/`week_people_roles` already freeze
     each week's person name/roles at save time, independent of the global
     people table.
  6. `bootstrapInitialAdmin()` (see Auth section).
- The DB file sits in `sessions/`, so the existing Docker bind-mount
  `./sessions:/app/sessions` keeps it persistent. The path is overridable via
  the `DB_PATH` environment variable (used for tests), production default is
  `sessions/projektuebersicht.db`.
- Project/person IDs are stable across reloads; only week-level fields are
  queryable columns.

## Frontend architecture

- The frontend is split into small classic non-module `<script>` files under
  `public/js/`; **all functions are globals on `window`**. Three HTML files
  include them via `<script src>` tags; load order in the HTML defines
  dependencies, since there is no bundler:
  - `Test.html` loads `globals → utils → ui → date-picker → server → auth →
    store → weeks` (shared modules), then the tab-specific folders `board →
    people → projects → load → dashboard`, finally `gantt → showmode →
    tabs-auth → pdf → csv → backup → import → init`. See the exact list in
    `Test.html`. `auth.js` sits right after `server.js` because
    `checkAuthAndInit()` needs `baseUrl()`, and before `store.js`/`weeks.js`
    since nothing may talk to the data endpoints before a session exists.
    The `js/plan/*` modules of the Projektbereich sit right after `gantt.js`
    (`plan-state → plan-sections → plan-info → plan-history →
    plan-build-gantt → plan-gantt → plan-drag → plan-modals → plan-tasks →
    plan-files → plan-templates → plan-honorar → plan-settings →
    plan-schedule`): they must come after `gantt.js`, whose `buildGanttHtml()`
    `plan-build-gantt.js` wraps, and `plan-history` must stay before
    `plan-build-gantt`, which uses its previous-week helpers. None of them
    collides with a main-module global — every one runs in an IIFE over
    `window.PlanApp` and exports through `window.*`.
  - `admin-users.html` is the second, fully independent page (the only one
    outside the tab system): it loads only `globals →
    utils → ui → server → auth → admin-users.js` (no `date-picker`, no
    `gantt`, no `plan/*` — it only talks to `/admin/users*`).
- `currentUser`/`checkAuthAndInit()` (`js/auth.js`) are the shared client-side
  auth concept across all three pages: `checkAuthAndInit(onAuthenticated)`
  calls `GET /whoami`; with a session it sets `currentUser`, hides the login
  overlay and runs `onAuthenticated()` (the page's normal entry point, e.g.
  `initUiState()` + `switchDepartment()` in `js/init.js`); without one it shows
  the blocking `#loginOverlay`/`#loginForm` and only proceeds after a
  successful `POST /login`. `renderUserBar()` shows the current user's
  name/role and toggles admin-only UI (the "DB Import" button, the
  `#adminUsersLink` to `admin-users.html`) based on `currentUser.role`.
- Shared state object `window.PlanApp` (`js/plan/plan-state.js`) holds all
  project-plan page state (week, project, zoom level, drag/`modal`-state),
  `db`/`currentDepartment` live in `js/globals.js`.
- State: `let db = { weeks, currentWeek, globalPeople }` (in-memory only).
- Project/person IDs are stable across reloads because the server splits and
  reassembles week objects deterministically (JSON IDs are kept in the DB
  columns); projects are addressed cross-page by `department` + week `label` +
  `projNr` (+ readable projName path segment) via URL params:
  `openProjectPlan()` builds `/HLS/Projektplan/<ProjName>?weekLabel=…&projNr=…`,
  `findProjectForPlan` resolves them. Person IDs follow
  `personIdForName(name)` → `p_<lowercased alnum>`.
- `save()` debounces 500 ms then `syncAllToServer()` writes **only dirty weeks**
  (`dirtyWeeks` – track `markWeekDirty()`) via `sendWeekToServer()`. There is
  no separate people-list dirty-tracking/sync path anymore (no
  `dirtyPeople`/`markPeopleDirty()`/`sendPeopleToServer()`) — since
  Projektbeteiligte is a read-only projection of `users`/`user_roles`/
  `user_absences`, the only way the client ever changes "people" data is
  either (a) admin CRUD on `admin-users.html` (writes straight to
  `/admin/users*`/`/users/:id/absences*`, no debounce/dirty-tracking
  involved), or (b) the cross-department roster addition
  (`addUserToCurrentWeekRoster()` in `js/people/people.js`), which just
  pushes into `currentWeek().people` and goes through the normal week-`save()`
  path. An in-flight guard (`syncInFlight`/`syncQueued`) prevents overlapping
  syncs from double-POSTing the same week with the same revision (which would
  look like a spurious 409). On success the server-provided `updatedAt`
  revision is adopted as the new sync base; weeks whose save failed (network
  errors) stay dirty and are retried. A `409` conflict response drops the
  local changes for that week and `handleWeekConflict()` reloads **only that
  week** from the server (`reloadWeekFromServer()`), leaving all other dirty
  weeks untouched. Exception: `js/plan/plan-state.js` `savePlan()` bypasses
  `save()` and writes only the current week directly via `sendWeekToServer()`
  (with the same in-flight/trailing-save guard), adopting the returned
  `updatedAt` and showing a toast on conflict. `switchWeek()` (in
  `js/weeks.js`) does NOT trigger a save – only actual edits do.
- `switchDepartment()` cancels a pending save debounce before switching, and
  `load()` discards stale `/load-all` responses after a department switch
  (frozen `requestedDepartment`), so late responses can never render or persist
  data under the wrong department.
- The people tab no longer has drag-and-drop, a form, or delete/reorder
  actions (`renderPeople()` in `js/people/people.js` is read-only rendering
  of `db.globalPeople[currentDepartment]` plus any cross-department roster
  additions on the current week). `getDragAfterElement()`/drag-and-drop
  (`js/projects/projects.js`) serves the project list's `.board-row` rows
  and, via `js/people/people.js`, the `.person-list-item` rows — the people tab's former
  `.person-card`/`.people-sortable`/`reorderPeople()` drag machinery was
  removed along with the CRUD UI. No drag handles are rendered on locked
  weeks in the Projekte tab either way.
- Weeks are sorted by calendar week extracted from the label (`KW XX / YYYY`)
  via `weekSortKey()`, not alphabetically/by filename.
- `applyAutoLock()` locks every week except the chronologically last one after
  load/clone/new-week; `localStorage` UI state is not restored for locked tabs.
- `localStorage` keys: `projuebersicht_v1` (department only — tab is never
  restored from storage; at startup the tab comes from the deep-link URL if
  present, otherwise `DEFAULT_TAB` = `'dashboard'`, i.e. "Meine Aufgaben"),
  `projuebersicht-theme`, header-collapse key. Do **not** store data in
  `localStorage`; it is UI state only.
- Deep-link URLs (`/<Dept>/<Tab>`) are shared via the address bar:
  `updateRouteUrl()` rewrites the path via `history.replaceState` on tab and
  department switches. Since the whole app requires login, an unauthenticated
  visitor to any deep link (including `/Projektplan/…`) simply sees the
  login overlay first; the URL itself is never gated per-tab anymore (there is
  no more admin/member split at the tab level — see Auth section).
- **Sidebar navigation (`Test.html` only):** the former top tab bar, a
  separate `<header>`, and a separate off-canvas tool drawer have been merged
  into one persistent left sidebar, `#headerMenu`/`.side-menu` (the element
  keeps its old id/class and `toggleHeader()`/`setHeaderCollapsed()` mechanics
  from `js/ui.js`, now repurposed to hold the entire navigation). Structure
  top to bottom: brand (logo/title), a "Navigation" section with the
  `.nav-item.tab`/`data-tab` buttons (`showTab()`) in the order Meine
  Aufgaben → Projekte → Wochenbericht → Auslastung (plus `#planNavItem`, see
  below) — **no "Abteilung" section** (removed along with department
  partitioning, see "Departments were retired"; `.dept-tab`/`switchDepartment()`
  no longer exist) — then — below the divider — the **Einstellungen** nav item (the tab
  `settings`), the **Werkzeuge** accordion and the **Admin** accordion (its
  sub-items are the sections of the `admin` tab, see below), and a
  `.side-menu-footer` with `#userBarInfo`/`#adminUsersLink`/logout
  (`renderUserBar()`, unchanged). At `min-width: 769px` the sidebar is
  `position: sticky` and permanently visible (no hamburger, `styles.css`);
  below that width, a narrow `.mobile-topbar` (logo + hamburger) replaces the
  old `<header>` and the sidebar reverts to its pre-existing off-canvas
  slide-in behavior. `admin-users.html` deliberately does **not** get this
  sidebar — it stays a focused standalone page outside the tab system, with
  its own back-link and user bar. The Projektbereich needs no special case
  at all any more: being the tab `plan` of `Test.html`, it simply IS under
  the same sidebar, with every section (Sitzung, Einstellungen, Admin, user
  footer) working as everywhere else. The only sidebar addition is
  `#planNavItem` — a nav item that stays hidden until a project has been
  opened and then carries that project's name (`syncPlanNavItem()` in
  `js/tabs-auth.js`), so the sidebar still highlights where you are while in
  the Projektbereich. `showTab()` additionally hides `.container` for
  `t === 'plan'`, because `#plan` deliberately sits OUTSIDE it (it brings its
  own header and padding) and the empty container's padding would otherwise
  show as a blank strip.

## Auth / security quirk

- Real server-side authentication (this replaced the old client-only
  password modal — `PROTECTED_PASSWORD_HASH`, `isAuthenticated`,
  `requestedAction`, `confirmPassword()`, `#passwordModal`, and the CryptoJS
  CDN `<script>` tag are all gone; `js/tabs-auth.js` now only holds `showTab()`).
  Login is required for the **entire app**, not just for mutations/admin
  actions — every JSON endpoint except `/login`/`/whoami` requires at least a
  valid session (see the Auth-level markers in "Server API" above).
- **Sessions:** a session is a row in `user_sessions` (`token` PK, 30-day
  `expires_at`), identified via the `puebersicht_session` cookie
  (`HttpOnly; SameSite=Lax`, `Secure` added automatically when the request is
  HTTPS). Cookie parsing/setting is hand-rolled (`parseCookies()`,
  `setSessionCookie()`/`clearSessionCookie()` in `server.js`) — no
  `cookie-parser` dependency, keeping the project's express+cors-only
  convention. `attachUser` middleware (registered via `app.use(attachUser)`
  right after `express.json()` and before `express.static`, so it runs for
  every request including static assets) reads the cookie, loads the joined
  session+user row, and sets `req.user` (or `null`); it also refreshes
  `last_seen_at` on every authenticated request. `requireAuth` (401 if
  `req.user` is null) and `requireRole('admin')` (401 if not logged in, else
  403 if `role !== 'admin'`) are the two middleware factories used on routes.
- **Passwords:** hashed with Node's built-in `crypto.scryptSync` (salt +
  64-byte hash, `hashPassword()`/`verifyPassword()` in `server.js`);
  `verifyPassword()` uses `crypto.timingSafeEqual()`. No bcrypt/argon2
  dependency — stays within the express+cors-only convention.
  `/login` returns the same generic error for wrong username, wrong password,
  or an inactive account (no username-enumeration signal).
- **Roles:** `admin` and `member` (`users.role` — do not confuse with the
  discipline `roles` array on a user, `Planung`/`Projektleitung`/
  `Bauüberwachung` in `user_roles`, which is unrelated to permissions). Only
  the genuinely destructive/administrative actions are **server-enforced**
  admin-only: week deletion (`/delete-week`), week unlock (`/unlock-week`),
  DB import (`/import`), and the `/admin/users*` CRUD. `/users/:id/absences*`
  stays open to any logged-in user (unchanged permission level from before).
  The `Projekte` tab and the (now read-only) `Projektbeteiligte` tab only
  require being logged in — any role; actually adding/editing/removing team
  members happens exclusively via `admin-users.html` (admin-only). The
  cross-department roster-add/remove UI in the Projektbeteiligte tab
  (`js/people/people.js`) is only **rendered** for `currentUser.role ===
  'admin'` — like the old client-only password modal, this is a UI-level
  gate, not a server-enforced one: it writes into `currentWeek().people`
  through the ordinary `save()` → `POST /save-week`, which only requires
  `requireAuth` (any role), so it does not add a new hard permission
  boundary.
- **First-admin bootstrap:** `bootstrapInitialAdmin()` runs once at every
  server start, guarded by `SELECT COUNT(*) FROM users` — if `users` is empty
  (fresh install), it generates a random password
  (`crypto.randomBytes(15).toString('base64url')`), creates an `admin` account
  (username `admin`, `must_change_password=1`), and prints the plaintext
  password to the console **and** writes it to
  `sessions/INITIAL_ADMIN_PASSWORD.txt` (outside `public/`, so
  `express.static` never serves it). There is no hardcoded password anywhere
  in the code.
- **`users.person_id`** is the bridge between login accounts and the
  pre-existing, department-independent `personIdForName()`-based assignment
  scheme (e.g. `plan_todo_assignees.person_id`) — set explicitly by an admin
  (not auto-derived server-side), so an account and a project-roster entry can
  exist independently of each other. A user with no matching `person_id` sees
  an empty dashboard with a hint instead of an error (`renderDashboard()` in
  `js/dashboard/dashboard.js`).
- CryptoJS is gone; pdfmake (PDF export) is still loaded from
  `cdnjs.cloudflare.com` in `Test.html`, so PDF export needs internet access
  and won't work offline. `admin-users.html` loads no CDN script.
- User-provided status HTML is sanitized on render via a small whitelist
  (`sanitizeStatusHtml` in `js/board/board.js`) to mitigate XSS.

### Ein Ort je Angabe

Every piece of project data now has exactly ONE place where it is entered.
Before, six of nine fields were editable in three different masks
(Projektboard, Wochenbericht, Projektbereich) — nobody knew which one was
authoritative, and two people could change the same field in different places.
The split follows what kind of data it is:

- **Laufende Erfassung → Wochenbericht only.** The session comment
  (`p.status`), the progress per Leistungsphase (`p.lph`) and the assignment of
  people (`p.assign`) are produced in the weekly meeting. They are editable
  **only** in the Wochenbericht.
- **Stammdaten → Projektbereich only.** Projektnummer, Bezeichnung,
  Schlagwörter, Gruppe, amtierende Leistungsphase, Auftragsstatus, Honorar, the
  beauftragte Leistungsphasen and the Aufwands-Gewichtung live in the
  Projektbereich (`einstellungen` section, `js/plan/plan-settings.js` plus
  `js/plan/plan-info.js` for Gruppe/amtierende LPH).
- **Everywhere else: display plus a way there.** `renderBoardDrawer()` takes
  `opts.nurAnsicht` (set by `BOARD_OPTS` in `js/board/board.js`): same card,
  same values, same order — but no input fields, no clickable avatars, and a
  `.drawer-verweis` underneath with the button "Im Wochenbericht bearbeiten →".
  The Projektbereich does the same via `setzeBerichtVerweis()`
  (`js/plan/plan-info.js`), filling `#planStatusVerweis`, `#planLphVerweis`
  and `#planAssignVerweis`.
- **The link is a real jump**, not a hint: `springZumWochenbericht(uid)`
  (`js/plan/plan-info.js`, also used by `renderBerichtVerweis()` in
  `board.js`) sets `berichtAuswahl` **before** `showTab('wochenbericht')` and
  therefore lands on that very project. Without it the user would have to find
  it again in a list of thirty. (`berichtAuswahl` is a global `let` binding
  from `js/wochenbericht/wochenbericht.js` — classic scripts, no modules, so
  assigning it from another file works.)
- **Consequence:** `planStatusBlur()`, `setPlanLph()` and `setPlanAssign()` in
  `js/plan/plan-info.js` are **gone** — they had no caller left. The status
  editor's formatting toolbar (`formatStatus()` buttons) went with them in the
  Projektbereich; the Wochenbericht keeps the full editor. `editLph()`,
  `cycleAssign()` and `saveBoardComment()` in `js/board/board.js` are
  untouched — the Wochenbericht's editing hangs off them.
- **Honorar and beauftragte Leistungsphasen stay editable in TWO places** on
  purpose (Projekteinstellungen and the "Terminplan aus Honorar" dialog, so the
  dialog remains usable on its own); both write through the same functions in
  `js/plan/plan-honorar.js` and re-render each other, so they cannot drift.
- Changing the **Projektnummer** asks for confirmation (`setPlanProjNr()`):
  uploaded files hang off `(department, project_nr)`, so a renumbered project
  would lose them. Changing the **Bezeichnung** updates the plan header
  (`#planTitle`), the sidebar entry (`syncPlanNavItem()`), the URL
  (`updateRouteUrl('plan')`) and the list — `renderPlanPage()` would do all of
  it, but it is module-local in `plan-state.js` and unreachable from
  `plan-settings.js`.

### Eine Projektliste (tab `board`, labelled "Projekte")

The former `Projekte` tab is gone; `renderBoard()` is the single project list.
It kept everything that concerns the LIST and gave up everything that concerns
a single project's data:

- Each group is a drop zone: `<div class="board-list projects-sortable"
  data-group="…" ondragover ondrop>`, each row `draggable` with a
  `.drag-handle`. The handlers stay in `js/projects/projects.js`
  (`handleDragStart`/`handleDrop`/`handleDragEnd`/`reorderProjects`) — they
  hold the ordering logic and are also used by `js/people/people.js`. Only
  `handleDrop()` had to learn which selector to use: it picks
  `.board-row:not([style*="opacity"])` when the drop zone contains board rows,
  `.person-list-item` otherwise. Without that, every drop landed at the end of
  the group.
- All four groups from `GROUP_ORDER` are pre-seeded even when empty, so a group
  emptied by dragging stays a drop target (a bug already fixed once in the old
  Projekte tab).
- `.board-row-actions` at the end of each row: "Öffnen" (Projektbereich) and
  "Löschen" (`delProjectFromList()`), hidden until hover/focus so the list
  stays calm. "+ Projekt" sits in the list's title row now (it was only in the
  sidebar before); the sidebar entry stays and opens the same mask.
- `js/projects/projects.js` no longer renders anything by default:
  `renderProjects()` returns immediately unless `#projectsList` exists. Every
  caller (`renderAll()`, `editProjectField()`, `auftrag.js`, `load.js`) can
  stay as it is.
- `TAB_SLUGS` (`js/globals.js`) lost `projects`, but `TAB_BY_SLUG['Projekte']`
  is set to `'board'` and `VALID_TAB_SLUGS` (`server.js`) still accepts
  `Projekte`, so forwarded links keep working instead of 404ing.

### Assistent "Neues Projekt" (`js/projekt-wizard.js`)

Sechs Schritte statt eines Formulars mit allen Feldern auf einmal. Der frühere
Dialog `#newProjModal` ist entfallen, ebenso `openNewProjModal()`,
`closeNewProjModal()`, `newProjStatusGewechselt()` und `saveNewProj()` in
`js/load/load.js`.

1. **Projekt** — Nummer, Bezeichnung, **Gewerke**, Gruppe, Schlagwörter
2. **Auftrag** — Auftragsstatus, Honorar **oder** Projektgröße, beauftragte
   Leistungsphasen
3. **Stand** — amtierende Leistungsphase
4. **Team** — Beteiligte je Rolle, auf die Gewerke des Projekts eingeschränkt
5. **Terminplan** — aus dem Honorar errechnet
6. **Prüfen** — Zusammenfassung, dann Anlegen

**Warum überhaupt:** Honorar, Team und Schlagwörter mussten zuvor NACH dem
Anlegen an drei weiteren Stellen nachgetragen werden — und wurden es meist
nicht. Genau daher rühren die Projekte, die in der Auslastung als „nicht
bewertbar" erscheinen. Umgekehrt ist die 27-Felder-Aufwandsmatrix aus dem
Anlegen verschwunden: Die firmenweite Vorlage genügt, die Feinjustierung
gehört in den Projektbereich (`openLpModal()` lebt dort weiter).

**Jeder Schritt ist Pflicht.** `wizardFehlt(key)` liefert die fehlenden
Angaben als Klartext; solange etwas fehlt, bleibt „Weiter" gesperrt und
daneben steht, *was* fehlt — ein gesperrter Knopf ohne Begründung ist eine
Sackgasse. Ein Assistent, der unvollständige Projekte durchlässt, löst das
Problem nicht, das er lösen soll.

**Gewerke** (`project_gewerke`, Tabelle nach dem Muster von
`project_beauftragte_lph`; Werte wie `VALID_DEPARTMENTS`): Ein Projekt gehört
zu einem oder mehreren Fachbereichen. Im Schritt „Team" stehen nur die
Mitarbeiter daraus zur Auswahl — ein reines Elektro-Projekt soll nicht die
ganze Belegschaft anbieten. Wer jemanden aus einem anderen Gewerk braucht,
holt ihn über das Auswahlfeld „Mitarbeiter aus anderen Gewerken" ausdrücklich
dazu; solche Personen tragen in der Auswahl einen gestrichelten Rand. Wird ein
Gewerk wieder abgewählt, fallen seine Beteiligten aus dem Team — sonst stünde
im Projekt jemand, der nach der eigenen Regel gar nicht auswählbar wäre.

Das **Gewerk einer Person** kommt aus `users.department`; `loadGlobalPeople()`
liefert es als Feld `gewerk` mit. Gewählt wird aber aus `week.people` und
nicht aus `db.globalPeople`: Die Zuordnung landet in `project.assign` und wird
vom Board über `currentWeek().people` aufgelöst — wer dort fehlt, erschiene
nirgends.

**Honorar oder Projektgröße, nie beides.** Das jeweils andere Feld wird
gesperrt statt nur ignoriert (ein Feld, das man ausfüllen kann, ohne dass es
wirkt, ist eine Falle) und beim Umschalten geleert. Die Projektgröße ist ein
**Zahlenfeld**, kein Regler: Ein Schieber legt eine Feinabstufung nahe, die
eine grobe Schätzung nicht hat. Neben ihr steht **kein Eurobetrag** — intern
rechnet `projektBasisHonorar()` zwar über `referenzHonorar`, aber die Summe
auszuweisen gäbe der Schätzung eine Genauigkeit, die sie nicht hat
(`groesseText()` gibt deshalb nur noch die Zahl zurück).

**Terminplan** (`wizardPlanZeilen()`): derselbe Rechenweg wie
`berechneHonorarPlan()` — Phasenhonorar ÷ Stundensatz = Stunden, ÷
(Arbeitsstunden pro Tag × Personen) = Dauer, Phasen hintereinander über
`addWorkdays()` (kennt die gepflegten Feiertage). Erzeugt je beauftragter
Phase eine Aufgabe in `project.plan.todos`.
- **Aus der Projektgröße wird KEIN Terminplan gerechnet.** Sie ist eine
  Schätzung, kein vereinbarter Betrag; daraus abgeleitete Termine sähen im
  Gantt so verbindlich aus wie errechnete. Der Schritt zeigt das als
  erklärten Hinweis, nicht als kommentarlos gesperrtes Feld.
- Das **Team steht vor dem Terminplan**, weil die Dauer davon abhängt, wie
  viele daran arbeiten. Die Teamgröße ist die Vorgabe für „gleichzeitig
  daran" und überschreibbar. Ohne diesen Schritt ergab eine Phase über
  180.000 € rechnerisch 172 Arbeitstage für eine Person, und der Plan lief
  über Jahre.

### Auftragsstatus — von der Anfrage zum Projekt

`projects.auftragsstatus` (`anfrage|angebot|beauftragt|abgeschlossen`, default
`beauftragt`, column added by `migrateAddProjectAuftragsstatus()`) makes the
step into a project explicit. Everything lives in `public/js/auftrag.js`:

- `auftragsstatusChip(p)` returns an **empty string** for `beauftragt` — the
  normal case must not add noise to thirty rows. Shown in the project list
  (`renderBoardRow()`), in the Wochenbericht agenda row and in its detail head.
- `auftragsstatusSelectHtml(p)` is the mask, used by the Projekteinstellungen
  (`#settingsAuftragsstatus`) and the "Neues Projekt" dialog.
- Switching TO `beauftragt` does not write directly: `setAuftragsstatus()`
  opens `#beauftragungModal`, because honorar and the beauftragte
  Leistungsphasen belong to the commissioning. The dialog requires at least one
  Leistungsphase, asks back when honorar is missing, offers to move the project
  out of "In Anbahnung" (that group deliberately does not count towards
  Auslastung) and can jump straight to the Terminplan.
- In the "Neues Projekt" dialog the group follows the status
  (`newProjStatusGewechselt()` in `js/load/load.js`): Anfrage/Angebot proposes
  "In Anbahnung", back to Beauftragt proposes "Aktive Projekte". It is a
  visible proposal in the select, so it can be overridden.
- `POST /save-week` rejects an unknown status with 400 before writing anything;
  `auftragsstatus` is in `IMPORT_OPTIONAL_COLS` so older backups still import,
  and `projekte.csv` carries the column.

### Projektbereich (tab `plan` in `Test.html`)

- Each project has its OWN area, not just a Gantt view. The area is split into
  six sections switched by the `.plan-nav` bar (`showPlanSection()` in
  `js/plan/plan-sections.js`); all six live in the DOM at once and are only
  toggled via `.is-active`, so every render function keeps filling its elements
  regardless of visibility (that is why the split needed no changes in
  `plan-info.js`, `plan-gantt.js`, `plan-files.js`). The current section is
  written to the URL fragment with `history.replaceState` (`…#aufgaben`) and
  restored from it on load (`app.initPlanSections()`, called at the end of
  `renderPlanPage()`); a `hashchange` listener follows external changes.
  - **Dashboard** — KPI tiles (`renderPlanKpis()`), the session comment and the
    LPH progress list (`renderPlanInfo()`), "Nächste Termine" and "Team"
    (`renderPlanDashboard()`), plus three compact cards that jump to the
    Ressourcen/Dateien section or open the Verlauf modal.
  - **Terminplan** — the Gantt with its toolbar and, below it, the resource
    load (`#resourceLoadContainer`, formerly a modal).
  - **Aufgaben** — the same todos/milestones as a list (`renderPlanTasks()`,
    `js/plan/plan-tasks.js`). No own data and no own dialogs: a row opens the
    very same `openTodoModal()`/`openMilestoneModal()` as the Gantt, and the
    indices match because the list keeps `plan.todos`/`plan.milestones` order.
    The create buttons (`+ Aufgabe`, `+ Meilenstein`, `+ Vorlage`,
    `+ Terminplan`) exist twice — in the Gantt toolbar and above the list, the
    latter with an `…BtnList` id suffix; `renderPlanPage()` hides both sets on
    locked weeks.
    **A todo is only a Gantt row when it has BOTH a start and an end date.**
    `plan.todos` is the one shared list either way — every todo always shows
    up here in Aufgaben, with its assignees (`t.assignees`, "Zuständige"
    chips in `openTodoModal()`, unrelated to whether it has a schedule) — but
    `plan-build-gantt.js` (the `buildGanttHtml()` extension that inserts
    TODO/milestone rows under the project row) only inserts a row for a todo
    with `todo.start && todo.end`; a title-only todo (created via `+ Aufgabe`
    or `+ TODO` with the date range left empty — nothing in `saveTodoEdit()`
    requires dates, only the title) stays a pure checklist item that appears
    solely here, never in the Gantt/Terminplan. The Aufgaben row for such a
    todo shows "ohne Termin" in place of a date range
    (`.plan-task-no-schedule`). Giving it a start/end later (editing the same
    todo through either view) makes a Gantt row for it appear on the next
    render — same object, no separate "convert to scheduled" action needed.
    `reorderPlanRows()` (`js/plan/plan-drag.js`) accounts for this: its
    DOM-row-count safety check and the reordering itself only ever touch
    todos that have `start && end` (`scheduledIds`) — a title-only todo has
    no drag handle in the Gantt to begin with and keeps its exact position in
    `plan.todos` untouched by any Gantt row drag.
  - **Leistung** — Leistungsstand & Abrechnung (`renderPlanLeistung()`,
    `js/plan/plan-leistung.js`): the value actually earned, per beauftragte
    Leistungsphase, as **Honorar × HOAI-Anteil der Phase × Fortschritt der
    Phase**. The shares come from `GET /honorar-config` and are normalised
    across the beauftragte phases only (same as `berechneHonorarPlan()`), so a
    project commissioned for three phases still adds up to 100 %. Nothing is
    entered here: honorar and the beauftragte phases come from
    "Einstellungen", the progress from the Wochenbericht — this section only
    computes. Three cases deliberately show a hint instead of a number: no
    honorar, no beauftragte phase, no shares stored. **This was the missing
    link** — the app knew the honorar and it knew the progress per phase, but
    never put the two together, so nobody could see what a project had earned.
    It is its own section rather than a Dashboard card because the breakdown
    has one row per phase with five columns; as a card it would either be
    cramped or appear twice.
  - **Dateien** — upload/review/comments (`js/plan/plan-files.js`), formerly a
    modal.
  - **Protokolle** — Besprechungsprotokolle (`js/plan/plan-protokoll.js`), see
    "### Protokolle" below for the data model and the "Fortschreiben"
    mechanism.
  - **Einstellungen** — project number/name (display only — the page is
    addressed by them), Gruppe, amtierende Leistungsphase, Beteiligten-Matrix
    (all still rendered by `plan-info.js`), plus Honorar and the **beauftragte
    Leistungsphasen** (`renderPlanSettings()`, `js/plan/plan-settings.js`).
- `p.honorar`/`p.beauftragteLP` can now be edited in TWO places: here and in
  the "Terminplan aus Honorar" dialog (which keeps them so it stays usable on
  its own). Both write through `setHonorarBetrag()`/`toggleBeauftragteLp()` in
  `js/plan/plan-honorar.js` and re-render the other mask afterwards, so they
  cannot drift apart. Persistence is the ordinary `savePlan()` → `POST
  /save-week` path (columns `projects.honorar` / table
  `project_beauftragte_lph`) — no dedicated endpoint.
- `renderPlanGantt()` is the central refresh hook: it ends by calling
  `renderPlanTasks()` and `renderPlanDashboard()`, so every existing mutation
  path (drag, modals, auto-schedule, templates, honorar plan) updates all three
  views without touching those modules.
- The four former modals (`#planInfoModal`, `#planResourceModal`,
  `#planFilesModal`) are gone; only `#planHistoryModal` (Verlauf) remains.
  `openResourceModal()`/`openFilesPanel()` kept their names but now just switch
  sections. On a load error (missing params, unknown week/project, network)
  `app.hidePlanNav()` hides the section bar, since every section would be empty.
  Because the area now shows one project after another within the same
  document, `app.showPlanNav()` exists as its counterpart (a fresh page load
  used to reset it for free).
- **Entry point (two steps, deliberately split).** `setPlanTarget(weekLabel,
  projNr, projName)` only *stores* the target; `openPlanView()` resolves it
  against the already-loaded `db.weeks` and renders. `showTab('plan')` does
  the second step itself, AFTER the area is visible — the Gantt measures its
  container width, which is 0 in a hidden element. `openProjectPlan()` and
  the deep-link path in `initUiState()` therefore only call `setPlanTarget()`.
  Addressing is by week label + project nr/name (never `project.id`, which
  `cloneWeek()` re-assigns). On the very first deep-link render `db.weeks` is
  still empty; that is not an error but a "wird geladen…" state, and `load()`
  calls `showTab(currentTab)` again once the data is there.
- **There is no separate data load and no separate save path any more.** The
  old page fetched `/load-all` itself and wrote with its own
  `sendWeekToServer()`, because `store.js` wasn't loaded there. In one
  document that would be two writers on the same week sending the same
  revision base — the slower one getting a bogus 409. `savePlan()` is now
  just `markWeekDirty(app.week.label)` + `scheduleSessionSync()`, i.e. the
  ordinary debounced path with its in-flight guard, retry banner, conflict
  handling and 401 login overlay. It passes the label explicitly rather than
  calling `save()`, since `save()` marks the *currently selected* week and a
  deep link may have pointed the Projektbereich at a different one.
- `updateRouteUrl('plan')` (`js/ui.js`) is the one tab whose URL is not a
  fixed slug: it builds `/Projektplan/<Name>?weekLabel=…&projNr=…` from
  `window.PlanApp` and **keeps `window.location.hash`**, so a link to a
  specific section survives the switch. `applyUrlRoute()` parses the same
  shape back into `{tab:'plan', weekLabel, projNr, projName}`.
- The `hashchange` listener in `plan-sections.js` and the `resize` listener in
  `plan-gantt.js` both bail out unless `currentTab === 'plan'` — they now run
  while completely different tabs are on screen.

### File uploads (`project_files` / review / comments)

- Files are linked to a project via **`(department, project_nr)`**, NOT
  `(department, week_label, project_id)` — `project_id` (`p.id`) is
  regenerated on every `cloneWeek()` (`public/js/weeks.js`), while `p.nr`
  stays stable across the project's whole lifecycle. A project without a
  `nr` cannot receive files: the upload button is disabled client-side
  (`openFilesModal()` in `js/plan/plan-files.js`) and the server rejects with
  400 regardless.
- **Storage:** `sessions/uploads/<department>/<uuid>.<ext>`
  (`uploadDirFor()`/`extractFileExtension()` in `server.js`). The on-disk
  filename is always a fresh `crypto.randomUUID()` plus an extension taken
  from a whitelist regex (`/\.([a-zA-Z0-9]{1,8})$/`) applied to the
  client-supplied filename — no client-controlled string (`original_filename`,
  `project_nr`, `project_name`, `filename` query param) is ever interpolated
  into a filesystem path. `original_filename` is stored purely for display and
  is only ever used as the second argument to `res.download()` (the
  `Content-Disposition` filename), never as a path segment.
- **Multi-reviewer workflow:** an upload lists one or more reviewer user IDs
  (query param `reviewers=id1,id2`, deduplicated, filtered to active users,
  uploader removed — no self-review, at least one must remain or the upload is
  rejected with 400). Each reviewer gets a `project_file_reviewers` row with
  `decision='pending'`. `POST /project-files/:id/review` recomputes the
  file's overall `status` after every decision: **any single `rejected` decision
  blocks the file immediately** (terminal); only once **all** reviewers have
  `approved` does the file become `approved` (also terminal). Once terminal, no
  further review decisions are accepted (409).
- Deletion (`DELETE /project-files/:id`) is allowed for the uploader while
  `status='pending'`, or for an admin at any time; it deletes the
  `project_file_comments` and `project_file_reviewers` rows explicitly (no FK
  cascade — see Persistence section) before the `project_files` row, then
  best-effort removes the physical file.
- `import` never touches these tables (see `/import` note above) — a DB
  restore neither includes nor overwrites uploaded files or their
  review/comment state.

### Protokolle (`project_protokolle` / `protokoll_teilnehmer` / `protokoll_punkte`)

Besprechungsprotokolle je Projekt (classic Baubesprechungsprotokoll: Bauherr,
ausführende Firmen and the office's own team meet, discuss numbered points,
and unresolved points carry over meeting to meeting) — the seventh section of
the Projektbereich (`js/plan/plan-protokoll.js`), a persisted document type
that did not exist before this feature. The "Protokoll" inside the
Wochenbericht (`openBerichtProtokoll()`) is unrelated: that one is a
throwaway, client-only text export of what changed in a session, never
stored and not tied to a single project — this is a genuinely different,
stored, per-project document.

**Scoped by `project_nr`, exactly like `project_files`, NOT by
`week_label`/`project_id`.** `project_id` is regenerated on every automatic
session rollover (`ensureCurrentWeekRollover()`, see above), but a Protokoll
must survive across sessions. `week_label` is still stored on
`project_protokolle` — purely informational (which session was current when
the Protokoll was created), never used to look one up. A project without a
`nr` (a Planung-Sandbox plan) can't have Protokolle — the section is hidden
there, same reasoning and same mechanism as Dateien (see "Planung —
projektunabhängige Terminplan-Sandbox" above).

**Save pattern: one PUT replaces the whole editable content**, not a REST
route per field. `PUT /project-protokolle/:id` deletes and re-inserts every
`protokoll_teilnehmer`/`protokoll_punkte` row of that Protokoll in one
transaction (same "delete then re-insert" shape as
`deleteWeekData()`/`serializeWeek()` for a whole week) — closer in spirit to
how `plan.todos` is saved as one object via `savePlan()` than to
`project_files`' many small endpoints, because Teilnehmer and Punkte are
authored together in one sitting. The detail view in
`js/plan/plan-protokoll.js` is accordingly **inline in the Protokolle
section, not a modal** — too much content for a dialog — with an explicit
"Speichern" button (no autosave) and simple text/checkbox fields mutating an
in-memory copy directly (no re-render per keystroke, to avoid losing input
focus); only structural changes (add/remove a row, change a point's group)
re-render.

**"Fortschreiben" — the core mechanism, entirely server-side
(`POST /project-protokolle`, `server.js`):** creating a new Protokoll for a
project **copies** every `erledigt=0` point of that project's most recently
created Protokoll into the new one — fresh `id`, same `stamm_id` and
`nummer`, `neu=0`. `stamm_id` is what makes a point "the same point" across
Protokolle; it is never exposed to or trusted from the client. A point newly
added within a Protokoll (no existing `id` in the client's `PUT` payload)
gets a fresh `stamm_id` and `neu=1` — which drives the yellow highlight
(`.protokoll-punkt.is-neu`, own CSS tokens `--protokoll-neu-bg`/
`--protokoll-neu-border` in `styles.css`, deliberately NOT `--band-neu`,
which already means something else — "neu kommentiertes Projekt", blue — in
the Wochenbericht). Marking a point `erledigt` in one Protokoll does not
retroactively change it in earlier, already-created Protokolle (each
Protokoll's own copy is an immutable snapshot, like a distributed paper
protocol); it simply isn't copied into the *next* one. The very first
Protokoll of a project has nothing to copy from, so every one of its points
is `neu=1` by definition.

**`nummer` is computed, never edited — entirely decoupled from the
Fortschreiben/`neu` logic.** First built as a free-text field the user typed
by hand; changed on Erik's follow-up request to be fully automatic —
`berechneProtokollNummern(punkte)` (`js/plan/plan-protokoll.js`, exposed on
`window` so `exportProtokollPDF()` in `js/pdf.js` can call the identical
function — same cross-file pattern as `classifyProjectChange()` in
`wochenbericht.js`, which `pdf.js` also calls directly) derives every point's
displayed number purely from its **current** `gruppe` and position: a group
gets a top-level number in the order it first appears among the points, and
each point inside it gets "`<Gruppennummer>.<Position>`" (e.g. "1.1", "1.2",
"1.3" for the first group's three points, "2.1" for the second group's
first); a point with no group is just a plain top-level number on its own
("1", "2", "3" …). **Groups and ungrouped points share ONE counter for that
top-level number**, not two separate ones — on Erik's explicit follow-up
("keine Nummer doppelt… wenn die 1 schon in Ohne Gruppe gibt darf sie nicht
nochmal in ELT oder HLS auftauchen"): whichever comes first in the points'
order — an ungrouped point, or the first point of a not-yet-seen group —
claims the next number, so a plain "1" (an ungrouped point) and a group
numbered "1" (whose points would read "1.1", "1.2"…) can never coexist in
the same Protokoll; every top-level number is unique across the whole
document, standalone points and group prefixes alike. **Never trusts the stored
`protokoll_punkte.nummer` column** — recomputed fresh on every render (and
again by `exportProtokollPDF()` from its own freshly-fetched copy), so
screen and PDF can never disagree and a point's number always reflects
reality even if it moved groups or another point was added/removed/reordered
around it. The column still exists and the client fills it with the current
computed value right before every `PUT` purely for the sake of anyone
reading the row directly (e.g. via the API) — it is never read back as a
source of truth. Renumbering therefore never affects whether a point is "the
same point" across Protokolle (that's `stamm_id`) or whether it counts as
new (`neu`, set once, only at creation) — moving a point to a different
group, or another point being deleted and shifting everyone's numbers, has
zero effect on Fortschreiben/`neu`. `gruppe` itself is a genuinely free-text
field with no backing table and no fixed list — unlike
`project_gewerke`/`VALID_DEPARTMENTS`, which are a closed enumeration, a
Protokoll group is created simply by typing it on a point; a `<datalist>`
suggests names already used within the currently open Protokoll to curb
accidental near-duplicates ("ELT" vs "Elt"), fed from already-loaded data —
no extra server round-trip. Points are displayed **clustered into sections
by `gruppe`**, in the same first-appearance order that drives the
Gruppennummer, with an "Ohne Gruppe" section always first when any ungrouped
points exist. Changing a point's group moves it to the matching section (and
recomputes every affected number) on the next render (`onchange`, not
`oninput`, so re-clustering doesn't fire mid-keystroke and steal focus from
other fields).

**Reordering after the fact** (Erik's follow-up request) is two separate,
matching controls, both plain ↑/↓ buttons re-rendering just the Punkte-Block
— no drag-and-drop, since a point's *visual* section is already fixed by its
`gruppe` (dragging it across group sections wouldn't make sense without also
changing that field, which the Gruppe input already does): `verschiebePunkt(
idx, richtung)` swaps a point with its neighbour **within the same group**
(or within "Ohne Gruppe") only — disabled at the top/bottom of that group's
own list; `verschiebeGruppe(gruppe, richtung)` moves an entire group's points
as one block relative to the other groups (rebuilds `currentProtokoll.punkte`
as "Ohne Gruppe" points first, unchanged, then each group's points
concatenated in the new group order) — this is what actually changes which
group gets Gruppennummer "1" vs. "2". "Ohne Gruppe" itself is not
reorderable relative to the groups (it stays the fixed first section, same
reasoning as its render order above); both buttons are simply absent/disabled
at a list's boundary rather than wrapping around.

**Teilnehmer are free text** (`protokoll_teilnehmer`: name + optional
Firma/Rolle, binary `anwesend` — deliberately the same "no third state" rule
as `week.attendance`), independent of user accounts entirely — construction
meetings routinely include externals (Bauherr, ausführende Firmen) who have
no login here and never should. Two separate, non-overlapping paths fill it:
creating a new Protokoll by hand (`neuesProtokoll()` in `plan-protokoll.js`)
pre-fills the Teilnehmer list from the names of the project's *most recently
created* Protokoll (with `anwesend` reset to `true` — presence must be
reconfirmed every meeting, never assumed), falling back to
`projectAssignees(app.project, app.week)` (internal team only, no Firma) if
no earlier Protokoll exists, or an empty list otherwise — this prefill is
pure client-side convenience before the `POST`. Importing a document
(`POST /project-protokolle/import`) instead sources Teilnehmer from the
document itself via the KI-gestützte Erkennung (see below) — the two paths
are never combined/merged: an import shows only what the uploaded document
actually contains, never the previous Protokoll's roster, so the user is
never left guessing which source a listed name came from. Either way, the
server only ever persists whatever Teilnehmer array `legeProtokollAn()` is
given — it does no inference of its own.

**No lock/finalize concept in this first version** — unlike a real paper
Protokoll (which is fixed once distributed), every Protokoll here stays
editable indefinitely by any logged-in user, the same permission level as
editing a todo or milestone (`DELETE /project-protokolle/:id` is likewise
`requireAuth`, not admin-only — deleting a Protokoll is ordinary project
content, not an administrative action). A future "abgeschlossen" status
would be a natural, small follow-up, not part of this feature.

**PDF export** (`exportProtokollPDF(protokollId)`, `js/pdf.js`) is the third
PDF export the app has (alongside `exportWochenberichtPDF()`/
`exportSandboxPlanPDF()`) — A4 portrait like the Wochenbericht (same
`PDF_WB_PAGE_W`/`PDF_WB_MARGIN_X`/`pdfWbGridLayout()`), reusing `PDF_STYLES`/
`loadLogoPng()`/`PDF_ASSIGN_MAIN`. It deliberately re-fetches the Protokoll
fresh from the server rather than reading `plan-protokoll.js`'s private
in-memory state, so the exported PDF always reflects the last **saved**
state, never unsaved edits sitting in an open form. Like the screen, the
Punktetabelle is split into sections by `gruppe`, and `neu=1` rows get a
pale-yellow `fillColor` — a literal hex value, not the CSS custom property,
since a PDF does not react to the viewer's light/dark theme.

`project_protokolle`/`protokoll_teilnehmer`/`protokoll_punkte` are part of
`IMPORT_TABLES` (`server.js`) — a Protokoll created by hand has no on-disk
component and lives entirely in the database (same reasoning as
`plan_todos`); an **imported** one additionally references a file on disk
(see next paragraph), which — like `project_files` — a DB restore neither
includes nor overwrites.

**Import: turning an external protocol into one of these** (`POST
/project-protokolle/import`, `server.js`) — a second way to create a
Protokoll, alongside the "+ Neues Protokoll" button, for the common case
where the Bauherr or an ausführende Firma writes and circulates their own
protocol instead of the office's own. Rather than just filing the document,
the route extracts its text and turns it into ordinary Protokoll-Punkte, so
the result is immediately usable through every feature described above
(Fortschreiben, Gruppen, Verschieben, PDF-Export) instead of being a second,
parallel kind of content.

- **Two new dependencies**, the first this project has ever needed beyond
  express/cors: `pdfjs-dist` (PDF → text, via its `legacy/build/pdf.mjs`
  Node-compatible entry point, loaded with a dynamic `import()` from
  `server.js`'s otherwise-CommonJS code) and `mammoth` (`.docx` → text). Both
  run entirely locally — no network call, no API key, no per-use cost.
  (A third, `undici`, followed later — not for text extraction but to fix a
  local-server timeout bug in the KI recognition itself; see
  `LOKAL_DISPATCHER` further below.)
  `extrahierePdfText(buf)` (`server.js`) opens the document and walks every
  page's `getTextContent()` items, inserting a newline whenever an item's Y
  coordinate (`item.transform[5]`) changes — the same reconstruction a naive
  `.join(' ')` would lose, and `erkennePunkteAusText()` needs real line
  breaks, since a Punkt-Marker must sit at a line's start.
  **`@napi-rs/canvas`** (only for page-to-image rendering, never used here)
  is merely an `optionalDependency` of `pdfjs-dist`, not a hard one — the
  project's `.npmrc` (`omit=optional`) keeps `npm install` from ever
  fetching it, so no native addon ships regardless of platform.
  **First choice was `pdf-parse@1.x`, abandoned after it failed under
  real testing**: pinned initially to dodge `pdf-parse@2.x`'s hard
  dependency on `pdfjs-dist` + `@napi-rs/canvas`, but `pdf-parse@1.1.4`
  bundles a `pdfjs` build frozen at 2017 (`v1.10.100`) that throws
  `UnknownErrorException: bad XRef entry` on **any** PDF, valid or not, the
  moment Node's own `http` module has been loaded anywhere in the process —
  reproducible with nothing more than `require('http')` before the parse
  call, confirmed unrelated to the PDF's bytes (identical MD5 in and out) or
  their transmission (curl vs. direct Node `http.request` vs. a plain local
  `fs.readFileSync` in the same process — only the last one, with `http`
  never loaded, succeeded). Since `express` itself transitively loads
  `http`, this made `pdf-parse` fail on *every* request through the actual
  server while appearing to work fine in an isolated throwaway script —
  exactly the gap a smoke test that only calls the parser directly would
  miss. Switching to `pdfjs-dist` directly (current, actively maintained,
  zero hard dependencies) was unaffected by the same `require('http')`
  repro. Found and fixed before this reached Erik, by testing the actual
  route end-to-end (script → curl → server) rather than trusting a
  standalone unit-style check of the parsing function alone.
- **`erkennePunkteAusText(text)`** (`server.js`) is the heuristic, plain
  regex/string-processing, no AI: it looks for line-starting numbering
  markers ("1.1", "TOP 3", "Punkt 2" …, `PROTOKOLL_PUNKT_MARKER`), and for
  each match treats the rest of the line as `thema` and everything up to the
  next match as `text`; within that text, labeled fields ("Zuständig:",
  "Termin:" …, `PROTOKOLL_LABEL_MUSTER`) are pulled out if present, and the
  words "erledigt"/"geschlossen" set `erledigt=true`. **`gruppe` is
  deliberately never guessed** — external documents group too
  inconsistently (by Gewerk, by chapter, not at all) to infer reliably, so
  every recognized point lands in "Ohne Gruppe" for the user to sort by
  hand. If no numbering pattern matches anywhere in the whole document, a
  fallback kicks in: every non-empty paragraph becomes its own point with no
  further parsing. The function is pure (no I/O), independent of whether the
  text came from a PDF or a Word file.
- **KI-gestützte Erkennung (ChatGPT/Claude) as the primary path, with
  `erkennePunkteAusText()` above as the automatic fallback** — on Erik's
  explicit follow-up request, after the heuristic-only version above had
  already shipped. The import dialog offers a `<select>` ("ChatGPT"/
  "Claude", `#protokollImportErkennung` in `Test.html`, built at dialog-open
  time from `GET /my-ai-settings` so an option can carry a live "(kein
  Schlüssel hinterlegt)" hint); the chosen provider is sent as
  `?erkennung=chatgpt|claude` to `POST /project-protokolle/import`.
  Deliberately **not** a third "Textmuster" menu entry — that path is a
  safety net, never a conscious choice, exactly mirroring how a
  missing/failing key behaves. `erkennePunkteMitKI(text, userId, provider)`
  (`server.js`, right next to `erkennePunkteAusText()`) reads that ACCOUNT's
  own key via `readUserAiKey(userId, provider)`; on **any** failure — no key
  stored, network error, non-2xx response, a timeout (`AbortController`,
  `KI_TIMEOUT_MS_CLOUD`/`KI_TIMEOUT_MS_LOKAL`), or a response that doesn't
  match the expected shape —
  the route catches it and calls `erkennePunkteAusText(text)` instead, so
  the import always succeeds, even with no internet access at all. The
  response carries `erkennungsart` (`'chatgpt'|'claude'|'textmuster'`) and,
  only on a fallback, `erkennungshinweis` (the failure reason); the client
  surfaces that via the existing `app.showToast()` (`plan-state.js`) rather
  than silently pretending the AI path was used. **Unlike the heuristic,
  the KI path can also attempt `gruppe` and Teilnehmer recognition** (added
  on Erik's follow-up request, after both had shipped empty/absent from
  every import) — a language model can use context the heuristic's plain
  regex cannot: it recognises an actual section heading ("Elektro:", "TOP
  HLS") and a genuine Teilnehmer-/Anwesenheitsliste (usually at the
  document's start/end), things `erkennePunkteAusText()` deliberately never
  attempts (previous bullet).
  **`KI_SYSTEM_PROMPT` stayed deliberately short after it turned out to be
  extremely sensitive to added instructions** — found when Erik reported
  that a real import ("kopiert die Texte nicht mit, erstellt nur die
  Überschriften") produced almost no usable point text at all, diagnosed
  against his actual, real-world sample document (a professional
  PromanX/Phenix "Besprechungsbericht" export) rather than a synthetic
  toy text. That document turned out to be multi-level numbered — a
  top-level chapter ("01"), a sub-chapter ("01.0"), and only the deepest
  level ("01.0 01.03") carrying real descriptive text — and repeated,
  dated revision paragraphs under the same point across several past
  meetings. Direct, repeatable testing against Erik's local LM Studio
  (`temperature:0`, so not sampling noise) showed the SAME request, with
  only small prompt wording changes, swinging between 0, 1, 10, and 11
  recognised points, and between fully-populated and completely EMPTY
  `text` fields for every point — a longer, more explicit prompt (covering
  the multi-level numbering, an anti-hallucination rule for `gruppe`, an
  explicit Teilnehmer section, a rule for merging dated revision
  paragraphs) reliably performed WORSE than a much shorter one covering
  only the essentials, and even appending one extra, individually
  reasonable sentence to an already-working prompt was enough to regress
  it back to near-total failure. The worst single cause found: a leading,
  general "erfinde nichts, lass im Zweifel leer" instruction appeared to
  make the model default to leaving `text` itself empty out of the same
  caution — the opposite of Erik's actual complaint. `KI_SYSTEM_PROMPT`'s
  final, shipped wording is therefore intentionally minimal (no explicit
  Teilnehmer instructions, no revision-merging rule) and was kept VERBATIM
  from the one specific phrasing that was empirically confirmed to work
  (same token counts/results across repeated runs at `temperature:0`) —
  not polished for house style, since even small rewordings had already
  proven capable of silently breaking it again. At the time this was a
  real, but partial, fix: it recovered most point text where the previous
  prompt recovered almost none, but did not reliably suppress a bare
  chapter/sub-chapter heading from occasionally still becoming its own
  empty point, and revision continuations of an earlier point could still
  surface as separate, oddly-numbered entries.
  **A follow-up round (Erik: multiple distinct points under one heading
  should each come through as their own point, AND the existing paragraphs
  under a point should be carried over) added exactly ONE further sentence**
  and, against the same real-document stability test, did NOT regress —
  "Stehen unter einer Überschrift mehrere eigene Punkte, gib jeden einzeln
  aus. Folgen auf einen Punkt weitere Absätze ohne neue eigene Nummer,
  gehören sie zu diesem Punkt dazu." Confirmed against the document's own
  worst case (`01.0 01.06`, three dated revision paragraphs spanning three
  past meetings): previously these surfaced as orphaned, theme-less
  fragments; with the new sentence they came back as ONE point carrying all
  three paragraphs concatenated (2144 characters), and the earlier
  multi-point case (`01.0 01.01`/`01.0 01.03`/`01.0 01.04` all under the
  same `01.0 Organisation` heading) stayed correctly split into separate
  points. So the earlier "not something further prompt tuning could fix"
  conclusion was an overstatement from stopping after ONE failed attempt,
  not a hard ceiling — the real lesson is that EVERY wording change here
  must be tested against the real document at `temperature:0` individually
  before shipping, since nothing about this model's reaction to a given
  sentence can be predicted from how reasonable the sentence reads.
  **A second, independent failure mode turned up while testing the above**:
  against a test excerpt that was artificially cut to exclude the
  document's own real Teilnehmer-/Verteiler table, the model — still obliged
  by the schema to produce a `teilnehmer` array, with nothing genuine to put
  in it — span into a token-repetition loop (the same short name fragment
  repeated well over a thousand times) until `max_tokens` cut the response
  off mid-string, yielding invalid, unparseable JSON that discarded the
  otherwise-correct `punkte` result too. Re-run with the document's actual
  opening Teilnehmer table included, the loop did not recur, and the request
  finished in a tenth of the time (73s vs. 700+s) — strong evidence the
  trigger was the absence of real participant data for that one field, not
  the new point-splitting instruction, and not something every real import
  will hit (a real Besprechungsbericht always carries its own participant
  table). `frequency_penalty`/`presence_penalty` (`erkennePunkteMitChatGPT()`
  only — Anthropic's Messages API has no equivalent parameter) were added
  as a defensive measure regardless, since a repetition loop is a known,
  generic small-model failure mode worth guarding against independent of
  this one trigger being understood.
  **A third round (Erik: the KI should also judge whether a point is open,
  done, or purely informational) replaced the point's boolean `erledigt`
  output with a tri-state `status` — matching the app's own `offen`/
  `erledigt`/`info` status already added for manual editing (see the
  `protokoll_punkte.status` bullet above) — and taught the model to prefer a
  literal in-document marker over its own judgement: the real sample
  document, it turns out, prints the word "Info" directly under several
  points as their own status field, which `erkennePunkteMitChatGPT()`'s new
  instruction now explicitly looks for first. Confirmed against the same
  real document: status came back correctly split across all three values —
  several points correctly `info` (matching their literal "Info" marker),
  others correctly `offen` or `erledigt` from the narrative content when no
  literal marker applied. Normalisation lives in `normalisierePunktAusKi()`
  (validates against `VALID_PROTOKOLL_PUNKT_STATUS`, falls back to `offen`)
  and in `legeProtokollAn()`'s `zusatzPunkte` loop, which accepts EITHER a
  valid `status` string (the KI path) OR falls back to deriving one from the
  older boolean `erledigt` (the Textmuster heuristic, `erkennePunkteAusText()`,
  was deliberately left alone — it has no way to judge "informational vs.
  actionable", only regex pattern matches for "erledigt"/"geschlossen").
  **This change cost back some of the previous round's paragraph-merging
  quality** — the same real-document test that previously returned a point
  like `01.0 01.06` fully merged (2144 characters, three dated revisions in
  one `text`) now split it again into two or three same-themed entries once
  `status` entered the picture, even after adding one more connecting
  sentence ("bleibt es EIN Punkt mit dem Status des letzten Absatzes") that
  measurably helped (11 fragments down to 9) without fully fixing it. This
  is accepted rather than chased further: unlike the earlier regressions,
  nothing here comes back empty, orphaned, or theme-less any more — every
  fragment still carries its own real thema, text, and now-correct status,
  it is simply split one topic too finely in places. The status-rule and the
  merge-rule competing for the same limited headroom is, like the two
  previous rounds, a model-capability ceiling rather than a wording problem
  left unsolved — the same point about
  a stronger model having more room applies here too.
  A more capable model — the real Cloud `gpt-4o-mini`, or a
  larger local model — has more room for further instructions than this
  one could handle; that remains a model-capability question, not a prompt one.
  `temperature:0` was added to both providers' requests for the same
  reason the instability was diagnosable in the first place: without it,
  identical requests returned different results from run to run, making
  it impossible to tell a prompt regression from ordinary sampling noise.
  `max_tokens` was also added to both (16000 for ChatGPT, 8192 for
  Claude — previously unset for ChatGPT, too low at 4096 for Claude):
  a long Besprechungsbericht with many points needs more completion budget
  than either default/prior value guaranteed, and a response cut short by
  a token limit would look identical to one where the model simply decided
  to stop — a second, independent way the old behaviour could under-report
  points regardless of prompt wording.
  - **Both providers run over Node's built-in global `fetch()`** — no new
    npm dependency, unlike the PDF/Word text extraction above, which
    genuinely needed libraries. `erkennePunkteMitChatGPT(text, apiKey,
    apiUrl)` uses the Chat Completions API (`gpt-4o-mini`) with Structured
    Outputs (`response_format: json_schema`, strict mode) to force the exact
    point shape; `erkennePunkteMitClaude(text, apiKey, apiUrl)` uses the
    Messages API (`claude-haiku-4-5-20251001`) with forced tool-use
    (`tool_choice: {type:'tool', …}`) as the equivalent structured-output
    mechanism — Claude has no separate JSON-schema response mode. Both
    normalise each point through the same `normalisierePunktAusKi()` into the
    same `{nummer, gruppe, thema, text, zustaendig, termin, erledigt}` shape
    `erkennePunkteAusText()` already produces (here `gruppe` is a real
    pass-through, not hardcoded empty — see above), so `legeProtokollAn()`
    and everything downstream needs no branching on where a point came from.
    Each recognizer additionally returns a sibling `teilnehmer` array
    (normalised through `normalisiereTeilnehmerAusKi()` into
    `{name, firma, anwesend}`) — both functions' return value changed from a
    plain points array to `{punkte, teilnehmer}` for this; `erkennePunkteMitKI()`
    passes that object straight through, and the `/project-protokolle/import`
    route destructures it into its own `zusatzPunkte`/`teilnehmerAusDokument`
    locals, passing the latter to `legeProtokollAn()` instead of the
    hardcoded `[]` it started with. On the Textmuster-Fallback path
    `teilnehmerAusDokument` stays `[]`, same as before — the heuristic still
    never attempts Teilnehmer recognition.
    Text sent to either API is capped at `KI_MAX_TEXT_LAENGE` (40,000
    characters) — bounds cost/latency on a pathologically large upload,
    comfortably more than any real Besprechungsprotokoll needs. An `apiUrl`
    argument overrides `KI_DEFAULT_URL[provider]` when the account has one
    configured (see next bullet) — e.g. a locally running, OpenAI-compatible
    server (LM Studio, Ollama) instead of the public cloud API, so the
    feature can be tried with a free local model, or a company proxy/
    self-hosted gateway.
  - **Every account holds its OWN key (and optional URL) — not a firmenweit
    setting.** First built admin-managed/firmenweit, changed on Erik's
    explicit follow-up ("jeder user soll für sich seinen schlüssel
    hinterlegen können und die url angeben können"): a new, small
    **`user_ai_keys`** table (`user_id, provider` primary key, `api_key`,
    `api_url`, `FOREIGN KEY … ON DELETE CASCADE` — same User-Kind-Tabelle
    pattern as `user_roles`/`user_absences`) replaces the two rows that used
    to live in the firmenweit `app_settings` singleton store.
    `readUserAiKey(userId, provider)`/`writeUserAiKey(userId, provider,
    patch)` (`server.js`) are the read/write path. `GET`/`PUT
    /my-ai-settings` (scoped to `req.user.id`, never a client-supplied id —
    same pattern as `POST /change-email`) manage them: `GET` returns, per
    provider, only `{configured, apiUrl}` — **never the key itself**, the
    same "write-only, never read back" shape as a password, while `apiUrl`
    is not secret and comes back so the form can be pre-filled; `PUT` sets
    or (given an explicit empty string) clears a key, and separately
    validates/sets or clears an `apiUrl` via `istGueltigeAiUrl()` (400 if
    invalid), leaving an omitted sub-field untouched. The UI lives
    under **Einstellungen → Mein Konto** (`settings.js`, card
    `#settingsAiCard`) — not in Admin, since it is now personal account
    data like the e-mail address and password right above it in the same
    card list, not an administrative setting. No admin role is required or
    checked anywhere in this path.
  - **The card shows a "Cloud"/"Eigener Server" toggle (`.ai-mode-toggle`,
    `setAiMode()` in `settings.js`) instead of the collapsed "API-URL" link
    the first design used.** Redesigned after real use: connecting a local
    server (LM Studio) turned out to be the first thing Erik tried, not an
    edge case, so hiding the URL field behind a small disclosure undersold
    it — the toggle makes "Cloud" vs. "Eigener Server" a visible choice,
    and the URL field's placeholder names a concrete example
    (`http://localhost:1234 für LM Studio`) instead of an abstract
    explanation. `renderSettingsAiKeys()` opens "Eigener Server"
    automatically whenever a saved `apiUrl` is non-empty, so a configured
    override is never hidden on page load.
  - **`POST /my-ai-settings/test` ("Neu verbinden") actually exercises the
    saved connection** — the card previously only showed whether a key was
    *stored* (`configured`), never whether it *worked*; diagnosing Erik's
    LM Studio setup this week (wrong path, too-short timeout, a reasoning
    model burning almost all its tokens on invisible "thinking") had to
    happen entirely through real import attempts because nothing surfaced
    a connection problem on its own. The route reuses
    `erkennePunkteMitKI()` unchanged, scoped to `req.user.id`, with a short
    dummy text — the exact same code path an import uses, so a successful
    test means an import would succeed too (timeout choice, the local
    `reasoning_effort` handling, and URL normalisation all apply
    identically). Returns `{ok:false, error}` with **HTTP 200** on a failed
    test — a failed connection attempt is an expected, valid outcome to
    report, not a server error, so the client branches on `ok` rather than
    on HTTP status. `testMyAiConnection()` (`settings.js`) drives the
    `.ai-reconnect-btn` next to the status pill (spins via
    `.is-testing` while in flight, disabled whenever the provider isn't
    configured — same disabled-state pattern as the "Entfernen" button) and
    writes a failure into `.ai-test-error`, a plain line under the key row
    that **stays visible** until the next test result replaces or clears
    it — deliberately not a fading toast: a toast firing at the same moment
    the surrounding view changes is exactly how the Protokoll-Import's own
    KI-fallback banner was first missed (see below), the identical lesson
    applied here before it could repeat. A successful test instead uses the
    existing transient `showSettingsNote()` — good news is allowed to fade.
  - **`istGueltigeAiUrl()` allows plain `http://` on the loopback
    (`localhost`/`127.0.0.1`/`::1`) — everywhere else `https://` is
    required.** First shipped as `https://`-only, which broke the single
    most obvious reason to set a custom URL at all: Erik tried pointing it
    at a locally running LM Studio, whose OpenAI-compatible server is
    plain `http://localhost:1234/…` (a local dev server essentially never
    carries a TLS certificate for `localhost`). The `PUT` silently rejected
    that URL with 400, so the account's `api_url` stayed empty and every
    import kept hitting the real, public OpenAI endpoint with an
    OpenAI-shaped key that was never meant for it — confirmed from the
    live server log, which showed OpenAI's own `Incorrect API key
    provided…` message, i.e. the request really did leave the building
    instead of staying on `localhost` as intended. `http` stays disallowed
    for every non-loopback host — the key would otherwise cross a real
    network in plaintext — but on the loopback the request never leaves the
    machine, so there is nothing to protect against. Only meaningful when
    the server itself runs on the same machine as the local LLM server
    (true for a normal `npm start`); inside the Docker container (see
    "Docker" below), `localhost` means the container, not the host, so
    reaching a host-side LM Studio/Ollama instance needs
    `host.docker.internal` (Docker Desktop) or the host's LAN address
    instead.
  - **`normalisiereAiUrl(apiUrl, defaultUrl)` fills in the provider's
    default path when a custom `apiUrl` has none.** LM Studio and Ollama
    are both conventionally addressed by their bare origin
    (`http://localhost:1234`, `http://localhost:11434`) — that's the
    address either tool's own UI shows, not the full
    `…/v1/chat/completions` request path a raw `fetch()` needs. Saving just
    the origin therefore isn't a user mistake to reject, it's the expected
    input; without normalising it, the request landed on `/` at the local
    server. Reproduced directly against Erik's own running LM Studio (this
    Bash tool executes on the same machine the app runs on, so `curl
    127.0.0.1:1234` reached his real instance, not a stand-in): its log
    read `Received request: POST to /` / `Unexpected endpoint or method …
    Returning 200 anyway` for the bare origin, and correctly hit
    `/v1/chat/completions` once the path was appended. Only a *missing or
    empty* path (`new URL(apiUrl).pathname` is `''`/`'/'`) gets the
    default appended — an explicit, different path (e.g. a company proxy
    with its own route) is always left exactly as entered.
  - **`KI_TIMEOUT_MS_LOKAL` (30 min — raised twice from an initial 5 min:
    first to 15 min after Erik reported it still aborted often once the
    prompt fix below made the model generate real text for every point
    instead of staying mostly empty — see that bullet — then to 30 min
    after even 15 min still aborted while LM Studio itself finished cleanly
    at roughly 12,000 generated tokens on his hardware) applies whenever the
    resolved URL is on the loopback; every
    other host keeps the original `KI_TIMEOUT_MS_CLOUD` (45 s).** A single
    45 s timeout across the board silently aborted every
    request to a local model before it could finish — confirmed against
    Erik's own LM Studio, which remained correctly computing well past that
    point ("läuft aber durch") while the app had already given up and
    reported `This operation was aborted`. Cloud APIs keep the short
    timeout: a hung request there really does mean something is wrong and
    should fail fast, whereas CPU/modest-GPU local inference routinely
    takes minutes for a single structured-output completion — nothing to
    time out early for. `fetchMitTimeout()` decides via the same
    `istLoopbackHost()` the URL validation above uses, so both paths share
    one definition of "runs on this machine". On its own this raised
    timeout still wasn't enough for Erik's setup — see the next bullet for
    why, and for the fix that actually resolved it.
  - **`erkennePunkteMitChatGPT()` sends `reasoning_effort: 'none'` to local
    targets — the real fix for "This operation was aborted" even at a 5
    minute timeout.** Diagnosed by querying Erik's actual, running LM
    Studio directly (this Bash tool runs on the same machine as `server.js`
    itself, so `curl 127.0.0.1:1234` reaches it for real, not a stand-in):
    the loaded model, `qwen/qwen3.5-9b`, is a **reasoning model** that
    emits a hidden "thinking" transcript (its own `reasoning_content`
    field, separate from `content`) before every answer. For the trivial
    prompt "Sag nur das Wort: Test", it spent 260 of 264 completion tokens
    — 98.5% — on thinking alone, taking 15 seconds for a one-word answer;
    scaled up to the real task (an 11-page Besprechungsprotokoll, 100+
    points, strict JSON schema), that invisible phase alone plausibly runs
    to thousands of tokens, comfortably past any timeout regardless of how
    generous, even though the model reliably finishes if simply given
    enough time ("läuft aber durch" — Erik's own description). Two
    documented Qwen3 conventions for suppressing it were tried against this
    server and neither worked (`enable_thinking: false`, both top-level and
    nested under `chat_template_kwargs`; the `/no_think` prompt suffix) —
    only `reasoning_effort: 'none'` (the OpenAI o-series parameter, which
    LM Studio's compatibility layer honors) did: `reasoning_tokens` dropped
    to 0 and the same trivial prompt returned in 0.4s. Re-verified with the
    actual `KI_SYSTEM_PROMPT` and `KI_PUNKT_SCHEMA` against a real sample
    protocol text: correct, fully valid points (including correctly
    inferring `erledigt: true` from a point's text) in 11s with zero
    reasoning tokens, and end-to-end through the real import route in
    9.5s (`erkennungsart: 'chatgpt'`, no fallback needed) — the existing
    prompt and schema design needed no changes at all once the reasoning
    phase was out of the way. Sent **only** when `istLoopbackHost()` is
    true for the resolved URL — never to the real OpenAI endpoint, where
    `gpt-4o-mini` (not a reasoning model) doesn't support the parameter and
    an unrecognized field could be rejected outright. Claude is unaffected
    by any of this: Anthropic's Messages API only enables thinking via an
    explicit, opt-in `thinking` parameter that this code never sends, so
    there's no equivalent default-reasoning trap to guard against there.
  - **`LOKAL_DISPATCHER` (`server.js`, a dedicated `undici.Agent`) — the fix
    for a second, independent abort Erik hit once `KI_TIMEOUT_MS_LOKAL` was
    first raised past 5 minutes: `fetch failed` / `Headers Timeout Error`,
    even though LM Studio itself kept computing.** Node's global `fetch()`
    runs on an internal undici client whose OWN default `Agent` closes a
    connection after `headersTimeout`/`bodyTimeout` = 5 minutes each,
    entirely independent of the app's own `AbortController` — invisible as
    long as `KI_TIMEOUT_MS_LOKAL` itself was also ~5 minutes (both fired at
    about the same time, so only the app's own clean "This operation was
    aborted" was ever seen), but once the app's own timeout was raised,
    undici's shorter built-in one fired first instead, surfacing as the
    generic, lower-level `fetch failed`. Reproduced directly: a throwaway
    local HTTP server that delays its response, fetched with a
    deliberately short custom dispatcher, failed with the exact same
    `fetch failed` / `Headers Timeout Error` pair Erik saw; the same setup
    with a long dispatcher let the delayed response through. `fetch()`
    itself has no option for this — only the non-standard (but
    Node-honored) `dispatcher` field in its request options can override
    it, which needs an actual `Agent` instance, hence the one new
    dependency: **`undici`** (a second dependency beyond pdfjs-dist/
    mammoth, and the only one of the three NOT used for its own `fetch` —
    only for its `Agent` class, passed into Node's own global `fetch()` via
    `dispatcher`). `fetchMitTimeout()` attaches `LOKAL_DISPATCHER` only for
    loopback targets, with `headersTimeout`/`bodyTimeout` kept 10s above
    `KI_TIMEOUT_MS_LOKAL` so the app's own, friendlier abort message always
    wins the race against undici's lower-level one. Cloud targets are
    unaffected (`KI_TIMEOUT_MS_CLOUD` at 45s is far under undici's 5-minute
    default, so the problem never applied there).
  - **Stored in plaintext**, the same trust boundary as every other column
    in the same database file (e.g. `user_sessions.token`) — not a new or
    weaker guarantee than the rest of the schema.
  - **Breaks, for this one feature only, the server's previous "no internet
    access needed" property** — `holidaysForYear()` was deliberately built
    without a network dependency so the whole app keeps working on an
    office network without internet (see its own comment in `server.js`).
    KI-gestützte Erkennung inherently needs outbound internet access from
    the server; the automatic fallback to `erkennePunkteAusText()` means the
    app as a whole is unaffected — only this one recognition path silently
    degrades to the offline heuristic when there's no connectivity (or when
    the calling account simply hasn't configured a key).
- **The result is explicitly a draft, not a finished record** — recognition
  from an arbitrarily formatted foreign document, with or without AI, cannot
  be perfectly reliable (table columns routinely collapse in a plain-text
  extract, and even a capable model can misread a badly scanned source), so
  the design leans toward leaving a field empty rather than guessing wrong:
  an empty field is obviously incomplete when reviewed, a wrongly filled one
  is not. Every imported Protokoll shows a banner in the detail view
  (`.protokoll-import-banner` in `plan-styles.css`, reusing the same
  `--protokoll-neu-bg`/`--protokoll-neu-border` tokens as the `.is-neu`
  point highlight) prompting a check before saving, plus a "Quelldatei
  herunterladen" link (`GET /project-protokolle/:id/quelldatei`, the
  Protokoll equivalent of `GET /project-files/:id/download`) so recognized
  text can always be checked against the original. Both are driven purely by
  whether `quelleDateiname` is set on the loaded Protokoll — no separate
  "was this imported" flag or client-side state.
- **Shares the ordinary creation path, not a separate one**: the pre-existing
  inline logic of `POST /project-protokolle` was extracted into
  `legeProtokollAn(opts)`, called by both routes, so an imported Protokoll
  gets the exact same `nummer` assignment and Fortschreiben-copy of the
  previous Protokoll's open points as a manually created one — the import
  only adds the recognized points on top (`neu=1`, fresh `stamm_id`, appended
  after the copied-forward points). Nothing about numbering, grouping, or
  reordering (described above) needed to change for this feature — imported
  points are ordinary points from the moment they exist.
- **Two new nullable columns on `project_protokolle`**,
  `quelle_dateiname`/`quelle_stored_name` (migration
  `migrateAddProtokollQuelle()`, same idempotent `ALTER TABLE` pattern as
  `migrateAddProjectGroesse()`), empty for every hand-created Protokoll. The
  uploaded file itself is stored the same way as `project_files` —
  `sessions/uploads/<uuid>.<ext>` (`uploadDirFor()`/`extractFileExtension()`,
  both reused unchanged) — but **not** in the `project_files` table itself:
  that table's reviewer/approval workflow doesn't apply here (nobody
  "approves" someone else's protocol), so `quelle_stored_name` is the only
  pointer to the file, and `quelle_stored_name` (unlike `quelle_dateiname`)
  is never sent to the client — only used server-side to resolve the
  download route.

### Auslastung — Wochenstunden statt Faktoren

Die Auslastung wird in **Wochenstunden** gerechnet und erst zum Schluss auf die
Kapazität der Person bezogen. Vorher war sie eine Summe dimensionsloser
Gewichte: Ein Projekt in LPH 5 zählte für die Planung 1,0 — ob es 20.000 € oder
2 Mio. € umfasste. Zwei kleine Projekte wogen damit schwerer als ein großes,
und die Zahl sagte nichts darüber, wie viel Arbeit anliegt.

**Der Weg von einem Projekt zu den Wochenstunden einer Person**
(`berechneAuslastung()` in `js/load/load.js`, sechs Schritte):

1. **Basis** — `projektBasisHonorar()`: das Honorar des Projekts. Fehlt es,
   tritt `projects.groesse` (0–1) mal `APP_SETTINGS.referenzHonorar` an seine
   Stelle. Fehlt beides, ist das Projekt **nicht bewertbar** — es wird als
   Lücke ausgewiesen, nicht als Null gezählt.
2. **Phase** — `arbeitsPhase()` bestimmt, womit gerechnet wird: die amtierende
   Leistungsphase, und wenn die bereits zu 100 % erledigt ist, die nächste
   beauftragte, die noch offen ist. Ohne diesen Schritt fiel ein Projekt aus
   der Auslastung, sobald jemand seine Phase auf 100 % setzte, ohne
   weiterzuschalten — im Bestand der Normalfall. Sind alle beauftragten Phasen
   fertig, ist das Projekt fertig und bindet zu Recht keine Kapazität mehr.
   `phasenAnteilProzent()` liefert den Anteil dieser Phase am Honorar
   (`HONORAR_ANTEILE`, auf die **beauftragten** Phasen normiert — dieselbe
   Rechnung wie im Leistungsstand), abzüglich des Fortschritts. Übrig bleibt
   der offene Wert.
3. **Stunden** — offener Wert geteilt durch `APP_SETTINGS.stundensatz`.
4. **Rolle** — `rollenGewicht()` (Projektmatrix, sonst firmenweite Vorlage,
   unverändert), hier aber als **Anteil**: Gewicht der Rolle durch die Summe
   aller Rollengewichte dieser Phase.
5. **Köpfe** — Aufteilung auf die Personen, die dieser Rolle im Projekt
   zugeordnet sind (`zuordnungsGewicht()`: Hauptverantwortung 1,
   Unterstützung 0,5). Ohne diesen Schritt zählte jeder von drei Planern die
   vollen Phasenstunden — der Aufwand verdreifacht sich nicht dadurch, dass
   mehr Leute daran arbeiten. Dafür bekommt `berechneAuslastung()` das
   `assign`-Objekt des Projekts als letzten Parameter.
6. **Zeit** — `projektVerteilWochen()`: die Wochen bis zum spätesten Datum im
   Terminplan; ohne Terminplan (oder bei bereits verstrichenem Ende) gilt
   `APP_SETTINGS.verteilzeitraumWochen`. Ohne Horizont wäre die Wochenlast
   nicht bestimmt — dieselben Reststunden bedeuten über vier Wochen etwas
   anderes als über vierzig.

`HONORAR_ANTEILE` (`js/globals.js`) wird von `loadAppSettings()` (`js/store.js`)
zusammen mit den übrigen Vorgaben aus `GET /honorar-config` geladen, also
**vor** `/load-all` und damit vor dem ersten `renderAll()`. Der Projektbereich
holt sie sich für den Leistungsstand weiterhin selbst (`plan-leistung.js`),
weil er sie auch nach einer Änderung im laufenden Betrieb neu braucht.

**Was die Seite sonst noch anders macht als zuvor:**

- **Eine Summenzeile je MENSCH** über alle Rollen steht vor den Rollenblöcken.
  Bisher fehlte sie: Wer in drei Rollen arbeitet, hat trotzdem nur eine
  Arbeitswoche, und jede einzelne Rollenzeile blieb unter der Schwelle. Erik
  Dunin kam mit 0,80 Planung und 0,40 Projektleitung auf 1,20 — rot war keine
  der drei Zeilen.
- **Die Kopfzeile sagt, was die Zahlen abdecken** („1 von 25 Projekten
  bewertet"), und ein Aufklapper listet die nicht bewertbaren Projekte mit
  Grund. Vier Gründe kommen vor: ohne amtierende Leistungsphase, ohne Honorar
  und ohne Projektgröße, ohne Honorar-Anteil für diese Phase, und **niemand
  für \<Rolle\> zugeordnet** — ein Projekt kann bewertbar sein und trotzdem
  bei niemandem ankommen, etwa wenn es in LPH 8 steht (die die Bauüberwachung
  trägt), aber nur ein Planer zugeordnet ist. Eine fehlende Angabe ist keine
  fehlende Arbeit; vorher war beides eine Null.
- **Das volle Band ist die Wochenkapazität.** Die frühere Skala
  `auslastungBalkenMax` (Vorgabe 8) ist ersatzlos entfallen — samt
  `loadBarMax()`, dem Admin-Feld und dem Eintrag in `APP_SETTING_DEFS`: Sie
  stand im Widerspruch zur Ampel, die ab 1,0 rot wird, sodass ein roter Balken
  nur zu einem Achtel gefüllt war.
- **`js/pdf.js` rechnet dieselbe Rechnung** (Spalten „h / Woche" und „Anteil
  der Kapazität"), sonst wiesen Bildschirm und Druck verschiedene Zahlen aus.

**Die Projektgröße** (`projects.groesse`, REAL 0–1, Migration
`migrateAddProjectGroesse()`) wird als Regler im Bereich „Einstellungen" des
Projekts und im Dialog „Neues Projekt" gepflegt; `groesseText()` zeigt neben
dem Regler den Eurobetrag, weil eine nackte Zahl zwischen 0 und 1 niemandem
etwas sagt. Unter dem Regler steht, ob er gerade überhaupt zählt — eine Zahl,
die wirkungslos ist, ohne dass man es sieht, wäre schlimmer als keine.
Bestandszeilen starten mit 0 (= keine Angabe), absichtlich ohne Vorgabewert
wie 0,5: Eine erfundene Größe erzeugte Zahlen, die nach Messung aussehen.
`normalizeGroesse()` (`server.js`) kappt auf 0…1.

### Auslastung — das Lastband

`renderLoad()` (`js/load/load.js`) zeigt eine **Zeile je Person und Rolle**,
und der Balken ist nach Projekten aufgeteilt: ein Segment je Projekt, seine
Breite der Beitrag zur Last. Vorher stand jede Person in einer eigenen
`.load-card` mit ihrer Projektliste klein darunter — man sah die Zahl, aber
nicht, woraus sie besteht. Auf eine Auslastung von 1,80 folgt aber immer
dieselbe Frage: aus einem großen Projekt oder aus fünf kleinen, und was davon
lässt sich abgeben? Genau das beantwortet das Band.

- **Gerechnet wird nichts Zusätzliches.** `stats[key].projects` hält
  `{anzahl, stunden, nr, quelle}` statt nur einer Zählung — derselbe Wert, der
  ohnehin aufaddiert wird, wurde bisher nur verworfen. Die Segmentbreiten sind
  Anteile der Wochenkapazität, sodass ein volles Band eine volle Woche ist.
  Segmente aus einer geschätzten Projektgröße tragen in der Legende ein `≈`.
- **`projektFarbe(name)`** hasht den Projektnamen in `PROJEKT_FARBEN`, statt
  nach Position zu vergeben: Die Auswertung läuft auch über alle Sitzungen, in
  denen ein Projekt an wechselnder Stelle steht — eine Farbe, die je Sitzung
  springt, wäre schlimmer als keine. Die Palette ist bewusst gedämpft und vom
  Ampelspektrum getrennt (ein Segment sagt, WELCHES Projekt, nicht ob es gut
  steht) und trägt weiße Schrift mit mindestens 4,5:1.
- **Beschriftung erst ab 7 % der Bandbreite**, sonst bliebe von "21-4001" ein
  angeschnittenes "21-40" stehen. Schmale Segmente behalten Farbe, Tooltip und
  ihren Eintrag in der `.load-legende`, die nur die tatsächlich vorkommenden
  Projekte auflistet.
- **Eine Null bekommt KEINE Ampelfarbe** (`--text-subtle` statt Grün): Grün
  hieße "gut ausgelastet", die Null heißt aber "nichts zugeordnet". In einer
  Sitzung mit ungepflegten Zuordnungen stünden sonst dreizehn grüne Nullen
  untereinander und meldeten Entwarnung, wo nur Daten fehlen — im Bestand
  genau der Fall.
- **`loadAmpelColor()` liefert Design-Tokens** (`var(--red)` …) statt der
  früheren Festwerte. Die Ampel färbt jetzt die große Zahl am Zeilenende, und
  `#c53030` kam auf schwarzem Grund nur auf 3,6:1; mit dem Token sind es 6,2:1.
  `pdfLoadAmpelColor()` behält seine druckfreundlichen Festwerte — ein PDF hat
  kein Thema.
- Innerhalb einer Rolle wird **absteigend nach Auslastung** sortiert: Wer zu
  viel hat, steht oben, und die Zeilen ohne Zuordnung sammeln sich unten,
  statt die Liste zu durchsetzen.
- **`.load-card`/`.load-row`/`.load-num`/`.load-detail` bleiben bestehen** —
  das Dashboard (`js/dashboard/dashboard.js`) und die Ressourcenansicht des
  Projektbereichs (`js/plan/plan-gantt.js`) bauen darauf auf. Der Show Mode
  kopiert das gerenderte HTML und zeigt das Band deshalb ohne Änderung; die
  drei `.show-mode-content .load-*`-Regeln wurden auf die Zeilenform
  umgestellt.

### Projektbeteiligte (global users, cross-department staffing)

**Removed from the sidebar navigation** (on Erik's request): once departments
stopped partitioning weeks/projects/people, this tab's original job —
pulling a Beteiligter from an ELT/HLS/ARCH-specific roster into a
department-scoped session — no longer applied to a single shared roster, and
what remained (a read-only list) duplicated the role/avatar chips already
visible in Wochenbericht/Board/Auslastung. The `.nav-item.tab[data-tab="people"]`
button in `Test.html` is gone; the tab panel (`#people`), its module
(`js/people/people.js`) and its deep-link slug (`Projektbeteiligte` in
`VALID_TAB_SLUGS`) are all still there and still reachable by URL — only the
sidebar entry point was removed, not the feature itself. The bullets below
describe that still-live feature; where they mention department-scoped
rosters, treat that as unverified against current reality (see "Departments
were retired").

- The per-department "Projektbeteiligte" concept — its own `people`/
  `person_roles`/`person_absences` rows with client-side CRUD/drag-reorder —
  has been fully replaced by the global `users` table (see Persistence for
  the migration). `db.globalPeople[department]` is now populated purely by
  the server: `loadGlobalPeople(department)` (`server.js`) reads
  `users`/`user_roles`/`user_absences` filtered to `department` and
  `active=1`, so the Projektbeteiligte tab (`js/people/people.js`,
  `renderPeople()`) is **read-only** — no add/edit/delete/reorder form, no
  drag handles. Only admins maintain team members, exclusively through
  `admin-users.html` (`department` is a required field there, `initials` is
  the board-column label, `roles` are the discipline roles).
- **Cross-department staffing:** a project's team is not restricted to its
  department's own users. In the Projektbeteiligte tab, an admin (UI-gated
  only, see Auth section) on an unlocked week sees a "+ Person aus anderer
  Abteilung zur aktuellen Sitzung hinzufügen" picker (`loadCrossDeptUserOptions()`/
  `addSelectedUserToCurrentWeekRoster()` in `js/people/people.js`), sourced
  from `GET /users` filtered to `department !== currentDepartment`, a set
  `personId`, and not already in `currentWeek().people`.
  `addUserToCurrentWeekRoster(user)` pushes a normal person object
  (`{id, name, fullName, email, role, absences:[]}`, built from the chosen
  user) directly into `currentWeek().people` and calls the ordinary `save()`
  — no new endpoint needed, since `week.people` is already part of the whole
  week JSON that `/save-week` writes. Because `board.js`'s `renderBoard()`/
  `peopleByRole()`/`cycleAssign()` and `load.js` iterate exclusively over
  `currentWeek().people` (never `db.globalPeople[dept]` directly), the added
  person immediately shows up as its own assignable board column — no
  changes were needed in `board.js`/`load.js`. `renderPeople()` shows such
  entries with an "(andere Abteilung)" hint and a "✕ Aus dieser Sitzung
  entfernen" button (`removeForeignUserFromCurrentWeekRoster()`), which
  refuses to remove a person still assigned to a project in that week (same
  guard the old `delPerson()` had). `cloneWeek()` carries these
  cross-department additions into the next week automatically (it copies
  `week.people` verbatim); `newWeek()` (a fresh start) does not — the roster
  resets to the department's own home users, which is intentional (with an
  explanatory hint in the UI).

### Planung — projektunabhängige Terminplan-Sandbox (tab `planung`, `js/planung/planung.js`)

Ein zweiter, eigener Abschnitt der Seitenleiste (nicht Teil von
"Navigation", zwischen Auslastung und Einstellungen) — eine **Sandbox**, in
der sich Terminpläne **unabhängig von einem echten Kundenprojekt** anlegen
lassen: entweder aus einem Honorar errechnet (derselbe Rechner wie bei einem
echten Projekt) oder frei von Hand begonnen. Jeder angemeldete Nutzer darf
das, keine Admin-Sperre. Mit voller Terminplan-Funktionalität — Drag&Drop,
Abhängigkeiten, kritischer Pfad, Auto-Schedule, Zoom — weil ein Sandbox-Plan
technisch ein ganz normales Projekt ist, nur an einer besonderen Stelle.

**Architektur: eine reservierte Sitzung statt eines Flags.** Ein erster
Ansatz (ein Flag auf einem Projekt der jeweils aktuellen Sitzung) wurde
verworfen: `cloneWeek()` (`public/js/weeks.js`) vergibt beim Duplizieren
einer Sitzung jedem Projekt eine neue `id` — ein Sandbox-Plan verlöre bei
jeder neuen Sitzung seine Identität. `newWeek()` startet dagegen mit
`projects:[]` — ein Sandbox-Plan in der "aktuellen Woche" verschwände beim
nächsten `newWeek()` einfach. Und `applyAutoLock()` sperrt jede Woche außer
der zeitlich letzten — ein Sandbox-Plan würde unvermittelt schreibgeschützt.
Stattdessen: **eine einzige, dauerhaft reservierte "Sitzung"**,
`SANDBOX_WEEK_LABEL = '__sandbox__'` (identisch in `server.js` und
`js/globals.js` — kein gemeinsames Modulsystem zwischen Server und Client).
`ensureSandboxWeek()` (`server.js`, läuft bei jedem Start wie die übrigen
Migrationen) legt die `weeks`-Zeile per `INSERT OR IGNORE` einmalig an.
Jeder Sandbox-Terminplan ist eine ganz normale Zeile in
`projects`/`project_plan`/`plan_todos`/`plan_milestones`/… mit diesem
`week_label` — **keine neue Spalte, keine Migration an `projects`** (bis auf
`updated_at`, siehe unten), `loadWeeks()`/`serializeWeek()` bleiben
unverändert.

**Der entscheidende Vorteil: strukturelle statt gemerkter Isolation.**
`GET /load-all` (`server.js`) spaltet `loadWeeks()`s Ergebnis auf — die
Sandbox-Woche wird NICHT als Teil von `weeks[]` ausgeliefert, sondern separat
als `sandboxPlans` (nur ihre `.projects`) plus `sandboxUpdatedAt`. Der Client
baut daraus in `load()` (`js/store.js`) ein eigenes, synthetisches Objekt
`db.sandboxWeek` — niemals Teil von `db.weeks`. Weil `renderBoard()`
(board.js), `berichtProjekte()` (wochenbericht.js), `berechneAuslastung()`
(load.js), `exportWochenberichtPDF()` (pdf.js),
`renderAdminSitzungen()` (admin.js) und jeder künftige Code, der `db.weeks`
durchläuft, die Sandbox-Daten also **strukturell nie sehen können**, gibt es
keinen Filter, den man in sechs Dateien hätte vergessen können — anders als
bei einem Flag-Ansatz. Nur an den wenigen Stellen, die `db.weeks` selbst
zusammensetzen oder adressieren, gibt es einen expliziten, kleinen Zweig:

**Achtung, echte Ausnahme dieser Garantie:** Sie gilt nur für den Weg über
`GET /load-all` (also für `db.weeks` clientseitig). Jeder serverseitige Code,
der `loadWeeks()` selbst ein zweites Mal aufruft, statt sich auf `db.weeks`
zu verlassen, braucht denselben `.filter(w => w.label !== SANDBOX_WEEK_LABEL)`
direkt nach dem Aufruf erneut — sonst bekäme die reservierte Sandbox-Woche
dort eine eigene Zeile, als wäre sie eine echte Sitzung. Vor jeder neuen
serverseitigen Route, die `loadWeeks()` aufruft, lohnt sich deshalb ein
kurzer Blick auf diesen Abschnitt.
- `syncAllToServer()` (store.js): `label === SANDBOX_WEEK_LABEL` löst zu
  `db.sandboxWeek` statt zu `db.weeks.find(...)` auf — ohne diesen Zweig
  würden Sandbox-Änderungen lautlos verworfen (`dirtyWeeks.delete()`, ohne je
  zu speichern), weil `db.weeks.find()` die Sandbox nie findet.
- `openPlanView()` (`js/plan/plan-state.js`): eigener Zweig für
  `app.weekLabel === SANDBOX_WEEK_LABEL`, der `app.week = db.sandboxWeek`
  setzt und das Projekt über die stabile **`id`** sucht statt über `nr`/`name`
  wie bei einem echten Projekt (`openSandboxPlan(planId)`,
  `app.sandboxPlanId`) — Sandbox-Projekte werden nie geklont, ihre `id` ist
  also im Unterschied zu einem echten Projekt dauerhaft stabil, und sie haben
  kein `nr`, also auch keine sinnvolle `nr`/`name`-Adressierung.
- `applyAutoLock()` (weeks.js): filtert `SANDBOX_WEEK_LABEL` heraus, bevor
  "welche Woche ist die späteste" berechnet wird — ein reines Sicherheitsnetz,
  da die Sandbox-Woche strukturell ohnehin nie in `db.weeks` ankommt.
- `validateWeekLabel()` (weeks.js) lehnt den reservierten Namen als von Hand
  eingegebene Sitzungsbezeichnung ab; `/delete-week`/`/unlock-week`
  (server.js) lehnen ihn mit 400 ab — die reservierte Woche ist über die
  normale Sitzungsverwaltung weder löschbar noch entsperrbar.
- `updateRouteUrl()`/`applyUrlRoute()` (`js/ui.js`) und `initUiState()`
  (`js/init.js`): die Deep-Link-Adresse eines Sandbox-Plans trägt `planId`
  statt `projNr` (`/Projektplan/<Name>?weekLabel=__sandbox__&planId=…`), weil
  ein Sandbox-Plan kein `nr` hat.

**`projects.updated_at`** (neue, idempotente Migration
`migrateAddProjectUpdatedAt()`, gleiches Muster wie
`migrateAddProjectGroesse()`) ist die einzige neue Spalte — nötig, weil
mehrere, voneinander unabhängige Sandbox-Pläne in EINER Woche liegen und sich
"zuletzt bearbeitet" bis dahin nur je WOCHE unterscheiden ließ
(`weeks.updated_at`). Für echte Projekte harmlos mitgeführt, aber ungenutzt.
Befüllt in `serializeWeek()`s bestehendem `insProject.run(...)`.

**Welche Projektfelder ein Sandbox-Plan nutzt:** `name` (einzige Identität,
Pflichtfeld, keine Duplikate — geprüft in `erstellePlanungTerminplan()`),
`honorar` + `beauftragteLP` (treiben den vorhandenen "Terminplan aus
Honorar"-Rechner, `plan-honorar.js`, unverändert), der komplette
`plan`-Baum (Todos/Meilensteine/Abhängigkeiten/Beteiligte). NICHT genutzt:
`nr`, `group`, `auftragsstatus`, `groesse`, `project_gewerke` — jeweils an
echte Geschäftslogik gebunden, die für eine Sandbox keinen Sinn ergibt.

**Wiederverwendeter Projektbereich, mit ausgeblendeten Abschnitten.**
`openSandboxPlan(planId)` führt in denselben Projektbereich (`#plan`), der
auch für echte Projekte dient — keine zweite Gantt-Implementierung. Ein
zentraler Merker `app.isSandboxPlan()` (`plan-state.js`, neben dem
bestehenden `app.isLocked()`) blendet aus: die Bereiche **Dateien** (kein
`nr`, kein sinnvoller Prüf-Workflow), **Leistung** (echte
Abrechnung/Auftragsstatus-abhängig) und **Protokolle** (hängt wie Dateien an
`project.nr`) ganz (`plan-nav`-Knöpfe versteckt, `initPlanSections()` in
plan-sections.js fängt zusätzlich einen direkten
`#dateien`/`#leistung`/`#protokolle`-Link ab und fällt auf Dashboard zurück); in
**Einstellungen** (`plan-settings.js`) die Felder Projektnummer,
Auftragsstatus, Gewerke, Projektgröße — **Honorar, beauftragte
Leistungsphasen und die Beteiligten-Matrix bleiben sichtbar**. Die
Kompakt-Karte "Verlauf" (`renderPlanHistory()`, plan-history.js) zeigt einen
eigenen Hinweistext statt der (für eine nie geklonte Sitzung bedeutungslosen)
Versions-Historie. Die Kopfzeile zeigt bewusst NICHT das rohe
`week.label` ("__sandbox__", ein interner Marker) als Untertitel, sondern
"Planung — unabhängig von einem laufenden Projekt".

**Anlegen** — bewusst kein mehrstufiger Assistent wie "Neues Projekt" (der
verlangt Gewerke/Team/Auftragsstatus, die hier nicht zutreffen), sondern ein
schlanker Dialog (`#neuerTerminplanModal`, `erstellePlanungTerminplan()`):
Name + Wahl zwischen "Aus Honorar berechnen" (landet in Einstellungen mit
fokussiertem Honorar-Feld; der Nutzer nutzt danach den bereits vorhandenen
"Terminplan aus Honorar"-Knopf dort — kein eigener Rechen-Code) und "Leer
beginnen" (landet direkt im leeren Terminplan).

**Bekannte, unveränderte Alteigenheit:** `saveWeekRelational()` löscht und
schreibt beim Speichern die komplette Woche neu — bearbeiten zwei Personen
gleichzeitig zwei verschiedene Sandbox-Pläne, kann es zu einem 409-Konflikt
kommen, obwohl sich die Änderungen inhaltlich nicht überschneiden. Keine neue
Schwäche dieses Features, sondern dieselbe Begrenzung, die heute schon gilt,
wenn zwei Personen zwei verschiedene echte Projekte derselben Woche
gleichzeitig bearbeiten.

### Einstellungen (tab `settings`, `js/settings/settings.js`)

- This area belongs to the signed-in account itself and holds **"Mein
  Konto"** plus, in a second card, its own **"KI-Zugangsdaten"** — the
  account's personal OpenAI/Claude API key (+ optional API-URL override) for
  the Protokoll-Import's KI-gestützte Erkennung, see "### Protokolle" for
  the full `user_ai_keys`/`GET`+`PUT /my-ai-settings` mechanism. "Mein
  Konto" itself holds master data for display, the account's own e-mail
  address, and the password change. Display name, role and `personId` stay an admin's
  job via `PATCH /admin/users/:id`; the area calls out a missing `personId`
  explicitly, since that silently empties "Meine Aufgaben"
  (`GET /my-dashboard` matches on `plan_todo_assignees.person_id`).
  **E-mail is the one field the account edits itself** (inline input next to
  the value, `submitEmailChange()` → `POST /change-email`, see Server API) —
  it used to be admin-only like the rest of that group, but unlike display
  name or role it is purely contact information the account owner is best
  placed to keep current, and making someone wait on an admin just to enter
  their own address was needless friction. An admin can still set/correct it
  via the Benutzerverwaltung, e.g. for a colleague who hasn't logged in yet.
- Everything company-wide used to sit here next to it. That mixed two
  different things in one list — your own account details, which concern
  everyone, and defaults that shift *everyone's* numbers and belong to admins
  alone. The latter moved to the Admin area below.
- Until this area existed the app had **no settings page at all**. The sidebar
  group labelled "Einstellungen" contained only *actions* (Neue Sitzung,
  Sitzung duplizieren, PDF-Export, Show Mode, CSV-Export) and is therefore now
  labelled **"Werkzeuge"** (accordion key `tools`, ids `toolsAccordionToggle`/
  `toolsSubnav`).
- **CSV-Export removed entirely** (route, `js/csv.js`, the "CSV Export"
  button) — on Erik's explicit call: with a real SQLite database behind the
  app now, a standing CSV export of the same data no longer earns its place;
  `GET /backup` already covers taking the data out wholesale. Unlike the
  Projektbeteiligte nav removal, this was a full removal, not just an
  unlinking — no route, no deep link, nothing left to find by URL.
  `buildExportCsvs()`/`buildZip()`/`csvFile()`/`csvCell()`/`CSV_SEP` (all
  server.js) went with it.
- **"Neue Sitzung"/"Sitzung duplizieren" removed as well**, for an unrelated
  reason: see "Automatischer Sitzungswechsel" below — creating a session is
  no longer a user action at all.
- **"PDF Export" (`exportPDF()`) removed too** — on Erik's call, PDF export
  should live only in the Wochenbericht and in Planung-Terminpläne, not as a
  standalone whole-session export. Along with the button and the function
  itself, `pdf.js` lost every helper exclusive to it (`pdfRoleBg()`,
  `pdfTableLayout()`, `pdfHeaderRows()`, `pdfProjectRow()`,
  `pdfGroupTitleRow()`, `pdfColumnWidths()`, `pdfCheckWidth()`,
  `pdfAttendanceBlock()`, `pdfLoadSection()`, and the color constants
  `PDF_ROLE_BG`/`PDF_ALT_ROW_BG`/`PDF_PAD_X`/`PDF_LINE_W`) — everything the
  remaining two exports (`exportWochenberichtPDF()`/`exportSandboxPlanPDF()`)
  still share (`PDF_STYLES`, `PDF_NEUTRAL_BG`, page geometry,
  `pdfStatusText()`, `pdfNormalizeColor()`, `loadLogoPng()`) stayed. This was
  the one export that showed every project across every Gewerk in a single
  file — that capability is gone with it; the per-Gewerk Wochenbericht PDFs
  are now the only filed record. Werkzeuge is down to two items:
  `+ Neues Projekt`, `Show Mode`.

### Admin (tab `admin`, `js/admin/admin.js`)

- Everything only admins may do, in one place. Split into **sections, one
  visible at a time**, switched from the sidebar: "Admin" is an accordion
  (`#adminAccordionToggle`/`#adminSubnav`) whose sub-items call
  `showAdminSection()`. `ADMIN_SECTIONS` is the single place a section is
  defined (key, heading); the binding to the markup runs through the
  `data-admin-section` attribute on both the card in `Test.html` and the
  sidebar item. The chosen section lives in the URL fragment
  (`/Admin#auslastung`) — same pattern as `.plan-nav` in the Projektbereich —
  which is why `updateRouteUrl()` keeps `location.hash` for `admin`.
- Two deviations from the "Werkzeuge" accordion, both deliberate: its head
  entry also *navigates* (the sub-items are in-page navigation, not actions,
  so a head that shows nothing would mislead) — from elsewhere a click always
  enters the area and expands, only from inside does it toggle; and its
  sub-items carry a persistent `.is-active` highlight.
  `syncAdminNavState()` in `js/tabs-auth.js` marks the head active while the
  area is open, because it is no longer a `.tab` button and the generic
  highlight does not reach it.
- `showTab('admin')` redirects non-admins to `DEFAULT_TAB`: without it a
  forwarded `/Admin` link showed a member an empty page, since
  `renderAdminArea()` renders nothing for them.
- Sections:
  - **Benutzerverwaltung** — accounts, roles, weekly hours, absences
    (`js/admin-users.js`, `renderAdminUsers()`); reloaded from the server
    every time the section is entered, since the list changes outside this
    browser and the other masks compute with it (weekly hours → Auslastung).
    Marked `wide: true` in `ADMIN_SECTIONS`, which lifts the grid's width cap
    — the table has ten columns.
  - **Honorar** — `stundensatz` + the per-LPH shares (`PUT /honorar-config`).
    A running sum turns amber unless the shares add up to 100 %.
  - **Auslastung** — `vollzeitStundenProWoche`, the ampel thresholds,
    `referenzHonorar`, `verteilzeitraumWochen`, and `aufwandVorlage` (the per-LPH/role weighting that applies to
    every project without its own matrix — i.e. most of them, which is why it
    quietly determined a large part of the Auslastung while it was a code
    constant).
  - **Termine & Sitzungen** — `arbeitsstundenProTag` and `autoLockAktiv`.
    Switching auto-lock off does **not** retroactively unlock: already-locked
    weeks stay locked, unlocking remains a deliberate admin action
    (`POST /unlock-week`).
    **Also holds the "Sitzungen" list** (`renderAdminSitzungen()`,
    `js/admin/admin.js`) — every week with its lock state and, for anything
    that isn't the one open week, an action to reach it. This replaced the
    week `<select>` that used to sit in the topbar (`#appTopbarWeek`,
    removed): sessions are storage and history now, not something the whole
    UI asks you to pick from. In normal operation there's exactly one row
    without an action (the open week, `db.currentWeek`, always the
    chronologically latest under `applyAutoLock()`); everything else is
    **Gesperrt** (`Entsperren` → `unlockWeek()`) or **Entsperrt**
    (`Öffnen` → `switchWeek()` + jump to Board — the one place left that can
    put a week other than the latest into `db.currentWeek`). Deleting a
    session also moved here (`Löschen` → `deleteWeekById()`) from its old
    home in *Datenbank & Sitzungen*, which depended on "the week chosen in
    the topbar" and had no other way to name a target once that selector was
    gone.
    **The unlock window is shorter than it looks**: `unlockWeek()` only
    flips that one week's flag, but `applyAutoLock()` re-locks every week
    except the latest, and runs again on `deleteWeekById()` — not just on
    page reload. Deleting an unrelated session while a correction is in
    progress silently re-locks it before the fix is saved. Since the
    automatic Sitzungswechsel (see "Automatischer Sitzungswechsel" above),
    there is a second, independent trigger for the same outcome:
    `ensureCurrentWeekRollover()` re-locks every other real week itself,
    server-side, the moment the calendar rolls into a new ISO week — so an
    in-progress correction on an older week can now also get silently
    re-locked purely by time passing, with nobody clicking anything at all.
    Both respect `app_settings.autoLockAktiv`. Surfacing "Entsperrt" as its
    own row state only made this pre-existing risk visible, not new.
  - **Feiertage** — the `holidays` table, plus a "gesetzliche Feiertage
    übernehmen" mask that computes a year's public holidays for a chosen state
    and lets the admin take them over (see `/holidays/suggest` above). It
    flags when the current or next year has no day stored at all — otherwise
    missing holidays only surface via a wrongly computed schedule.
  - **Aufgaben-Vorlagen** — create/delete steps per LPH
    (`POST`/`DELETE /lph-templates`).
  - **Betrieb & Sicherheit** — `maxBackups`, `sessionTage`,
    `loginMaxVersuche`, `loginSperreMinuten`. The session lifetime applies to
    *new* logins; existing sessions keep their stored `expires_at`.
  - **Datenbank & Sitzungen** — DB Backup, DB Import, Sitzung löschen. These
    three used to be bare sidebar menu entries where a mis-click was enough;
    they now sit behind an explanation of what each one does.
- **Honorar and Aufgaben-Vorlagen were moved out of project dialogs.** They
  used to sit inside `#honorarPlanModal` (`js/plan/plan-honorar.js`) and
  `#lphTemplateModal` (`js/plan/plan-templates.js`) — findable only by someone
  who happened to be computing a schedule. Those dialogs now only *use* the
  values and show admins a link here (`renderHonorarHint()`/
  `renderTemplateHint()`). Since `plan-honorar.js` caches the config for the
  whole page lifetime, `saveHonorarConfig()` calls
  `invalidateHonorarConfig()` afterwards — otherwise a dialog opened later in
  the same session would keep computing with the old rate.
- **Honorar, Auslastung, Termine and Betrieb used to be constants in the
  source** — partly in the frontend (`LP_AUFWAND_VORLAGE`,
  `THRESHOLD_RATIO_*`, `LOAD_BAR_MAX`, `STUNDEN_PRO_TAG`), partly in the
  server (`MAX_BACKUPS`, `SESSION_MAX_AGE_MS`, `LOGIN_MAX_ATTEMPTS`,
  `LOGIN_BLOCK_MS`). They moved here not because they change often but because
  they shift the numbers *everyone* sees, which makes maintaining them an
  administration task rather than a source edit. All of those identifiers are
  gone; the client reads the values from `APP_SETTINGS` (`js/globals.js`),
  filled by `loadAppSettings()` in `js/store.js` **before** `/load-all`, since
  `renderAll()` already computes with them. If that fetch fails the defaults
  in `js/globals.js` stand — deliberately identical to `APP_SETTING_DEFS`, so
  the app keeps computing as it did instead of showing wrong numbers.
- **Part-time capacity.** `users.capacity_hours` (maintained per account in
  `admin-users.html`) is what the Auslastung now measures a person against:
  `kapazitaetsFaktor()` in `js/load/load.js` divides the raw weekly load by
  `capacity_hours / vollzeitStundenProWoche`, so a half position counts as
  fully loaded at half the work. `0` = not maintained = full position, so
  existing accounts keep their previous picture. **`kapazitaetsFaktor()`
  takes the person OBJECT, not just its id**: a week's participants are
  frozen copies (`week_people`) whose id dates from when they were created —
  legacy data has `p_ap` where the account now carries `p_alexander_plum`, so
  the id alone would never find them and the full name is the second bridge.
  `js/pdf.js` applies the same factor, otherwise screen and PDF would report
  different numbers for the same part-timer.
- **"+ Neues Projekt" is no longer an admin entry** — it moved to
  "Werkzeuge". Creating a project goes through the ordinary week save
  (`POST /save-week`, `requireAuth`); the server never required the admin
  role for it, so the gate was purely cosmetic and merely kept members from
  ordinary work.
- The area being hidden for non-admins is a **UI gate only**, like everywhere
  else in this app; the real barrier is `requireRole('admin')` on
  `PUT /app-settings`, `PUT /honorar-config`, `POST`/`DELETE /lph-templates`,
  `POST`/`DELETE /holidays`, `GET /backup`, `POST /import` and
  `POST /delete-week` (verified: a member account gets 403 on each and the
  stored values stay unchanged).

### Wochenbericht — die Tagesordnung

- The Wochenbericht is laid out as the **agenda of the weekly team meeting**:
  the full project list on the left, the selected project full-size on the
  right. It replaced a stack of 29 open cards that ran to 18 screens (11.6
  after the cards were compressed) — **now 1.1**. The list stays put, so you
  always see where you are and what is still to come.
- **Ordered by project group** (`GROUP_ORDER`, like the project list), no
  longer by kind of change: every project gets discussed whether it changed or
  not, and sorting by change would force jumping between sections. What
  changed is still computed (`classifyProjectChange()`) and shown — as a dot
  in the list and a label in the detail, not as a sort key.
- `berichtAuswahl` holds the **`project_uid`**, not an index: saving a comment
  re-renders the list, and an index would point at a different project if the
  order changed.
- `renderBerichtListe()` is separate from `renderWochenbericht()` because the
  jump field redraws only the list — the detail, and above all a comment being
  typed, must survive.
- The eight functions, all built in:
  - **Besprochen-Haken** + "12 von 29 besprochen" (`projects.besprochen`,
    saved through the ordinary `save()` path).
  - **Besprochen & weiter** — ticks off and jumps to the next open item,
    searching behind the current position first, then from the top.
  - **Keyboard**: ↓/↑ switch project, Ctrl+↵ saves the comment and moves on.
    Bound at document level but gated on `currentTab === 'wochenbericht'`.
  - **Vorwochen-Zeile** — last session's comment above the input field, the
    answer to "what did we agree last week?" without opening the Verlauf.
  - **Aufgabe aus Kommentar** — turns a decision into a real `plan_todo`
    (title suggested from the *unsaved* field content, since in a meeting you
    type the decision and create the task before saving).
  - **Protokoll** — what changed versus the previous session plus the tasks
    created today, as text to copy or mail. The mailto route refuses overlong
    bodies rather than opening a truncated draft. **Not** the same thing as
    the PDF below: the Protokoll is a delta (what changed + what's new), meant
    to be pasted somewhere else; the PDF is the full agenda as a standalone
    file.
  - **„Als PDF ablegen"** (`exportWochenberichtPDF()`, `js/pdf.js`) — one of
    the two remaining PDF exports (the other is `exportSandboxPlanPDF()` for
    Planung-Terminpläne; the third, the board's own gewerkeübergreifende A3
    session-overview `exportPDF()`, was removed — see "Werkzeuge" above). The
    Wochenbericht is itself two-part, A4 portrait: **page 1** is a lined overview
    table per group (change dot, Nr., Name, Änderungsgrund, amtierende LPH +
    Fortschritt, Besprochen-Haken — `pdfWbUebersichtBlock()`) followed by the
    **Anwesenheit der Sitzung** as its own gridded table
    (`pdfWbAnwesenheitBlock()`, reading `w.attendance`/`w.people` exactly like
    the on-screen `renderAttendance()`: a missing entry counts as not present,
    same as an explicit `false` — there is no third "not yet recorded"
    state, so the count is literal even when nobody has been marked yet).
    **Page 2 onward** ("Vollständiger Bericht") is one bordered Akte per
    project with a left spine colored by `classifyProjectChange()`'s bucket
    (`PDF_WB_CHANGE_COLORS`: new/status/progress/unchanged), two columns
    inside — comment on the left via `pdfStatusText()` (same bold/color
    fidelity as the screen), a gridded Leistungsphasen-table and
    Beteiligte-table on the right (`pdfWbLphMiniTable()`/
    `pdfWbBeteiligteTable()`, falling back to all `LPHS` when none are
    beauftragt — same rule as `renderBoardDrawer()`), plus who's assigned but
    marked absent (`abwesendeBeteiligte()`). The amtierende-LPH value is
    computed once (`pdfWbAktuelleLphInfo()`, same `lpActiveList()` the
    Auslastung uses) and read by both the overview row and, indirectly, the
    Akte — so the two pages can never show conflicting figures for the same
    project. Reuses `PDF_STYLES`/`pdfStatusText()`/`loadLogoPng()` from the
    existing module. `pdfHslToHex()` is the one color helper: it lets the
    browser itself convert `getProgressColor()`'s `hsl()` output (pdfmake
    doesn't understand `hsl()`) into the hex `pdfNormalizeColor()` already
    handles, so the bar in the PDF is the exact same color as on screen
    instead of a second, invented scale. The overview/attendance/mini-tables
    all share one grid layout (`pdfWbGridLayout()`) so the whole document
    reads as tables throughout rather than mixing ruled and unruled blocks.
  - **Sprung-Feld** — filters the list only while something is typed; the
    agenda must stay complete.
  - **Abwesenheits-Hinweis** — marks projects whose assignees are absent, read
    from `week.attendance`. Stays silent while nobody is marked present at
    all, since "everyone is missing" would be a false alarm.
- Two bugs worth remembering, both found by measuring, not by looking:
  - The dense-card rules were scoped to `.report-card`, a container this
    rewrite removed — the card silently fell back to the Board layout
    (Leistungsphasen missing, people stacked). They now hang off
    `.board-drawer-dicht` itself.
  - The state class was literally `status`, which matched the unrelated
    `.status { min-width: 240px }` — the 7 px dot became 240 px wide and
    squeezed the project name to zero. State classes carry an `is-` prefix now.
- The dense card is **two columns again** (comment | phases + people). It had
  three while 29 cards stood stacked and height mattered; in the agenda only
  one project is ever open, so height is free while width is scarce — beside
  the list, three columns left the people 137 px.

### Wochenbericht — Gewerke-Trennung

Since departments stopped partitioning the data (see "Departments were
retired" above), every project from every discipline sat in the same, single
Tagesordnung — but ELT, HLS and ARCH hold their weekly team meeting
separately, at different times, and each meeting only needs its own trade's
projects, not the other two's. Completeness ("every project gets discussed")
now applies **within the chosen Gewerk**, not across all three at once; the
one place that still shows every project regardless of Gewerk is the
unfiltered "Projekte" board (`renderBoard()`) — untouched by this feature.

- **`wochenberichtGewerk`** (`js/wochenbericht/wochenbericht.js`) is a
  module-level `let`, `null` until resolved. Deliberately **not** persisted to
  `localStorage` — it resets on every page load/login, so a stale choice from
  a different meeting can never carry over silently.
- **Defaults from the account's own Gewerk, no dialog needed for the normal
  case**: `wochenberichtGewerkVoreinstellen()` runs at the top of
  `renderWochenbericht()` and, once per page load, sets
  `wochenberichtGewerk` to `currentUser.department` (added to `req.user` in
  `attachUser()`, `server.js`, specifically for this) if that's a valid
  Gewerk — most people only ever need their own trade's meeting, so this
  alone gets them straight to a filtered Tagesordnung with no extra step.
  Only an account without a maintained `department` (e.g. the bootstrap admin)
  falls through with `wochenberichtGewerk` still `null`.
- **Changing it is a plain `<select>`, not a full-screen step**
  (`renderGewerkDropdown()`, rendered both in the normal header via
  `renderBerichtKopf()` and, as a bare prompt, when no default could be
  resolved) — switching trades mid-session is a quick correction, not its own
  workflow, so it deliberately does NOT interrupt the page the way the first
  version of this feature (a blocking `#gewerkWizardModal`) did; that modal
  and `oeffneGewerkWizard()` are gone. Picking an option calls
  `waehleWochenberichtGewerk(g)` directly (`onchange`), which re-renders.
- **The filter lives in ONE place**, `berichtProjekte(w)` itself: when
  `wochenberichtGewerk` is set, it returns only projects whose `p.gewerke`
  (from `project_gewerke`, populated by the "Neues Projekt" wizard's Gewerke
  step, `js/projekt-wizard.js`) includes it. Because `renderWochenbericht()`,
  `renderBerichtListe()`, `aktuellesBerichtProjekt()`, `openBerichtProtokoll()`
  (the Protokoll text export) AND `exportWochenberichtPDF()` (`js/pdf.js`)
  all call this same function, the filter applies everywhere at once with no
  separate plumbing — screen, Protokoll and PDF can never disagree about
  which projects belong to the current Gewerke-Besprechung. The PDF's header,
  footer and filename additionally spell out the Gewerk
  (`Wochenbericht_ELT_KW_33___2026.pdf`); `exportWochenberichtPDF()` refuses
  with a message if called with no Gewerk chosen (only reachable for an
  account with no maintained `department`, since everyone else gets one from
  `wochenberichtGewerkVoreinstellen()` — the guard costs nothing either way).
- **Attendance is unaffected** — `w.attendance`/`w.people` are session-wide,
  not per-Gewerk, so `pdfWbAnwesenheitBlock()`/`renderAttendance()` keep
  showing everyone regardless of the chosen Gewerk.
- **Backfill for pre-existing projects**
  (`migrateBackfillProjectGewerkeAusTags()`, `server.js`, runs at every
  startup): every project that predates the Gewerke step — i.e. has zero
  `project_gewerke` rows — gets its Gewerk copied from whichever
  `ELT`/`HLS`/`ARCH` entry already sits in its `project_tags` (the marker
  `migrateRemoveDepartmentPartition()` left behind when it merged the former
  per-department copies). Without this, every pre-existing project would
  silently vanish from every Gewerke-filtered Tagesordnung the first time
  this feature shipped. Idempotent and non-destructive: it only ever inserts
  for a project with **zero** `project_gewerke` rows, so a manual correction
  in Projekteinstellungen (see next bullet) is never overwritten by a later
  server restart.
- **Gewerke are now correctable outside the wizard**: Projekteinstellungen
  (`renderPlanSettings()`, `js/plan/plan-settings.js`) gained a "Gewerke"
  checkbox row next to Schlagwörter, saved through `togglePlanGewerk()` —
  the exact same mutate-`p.field`-then-`savePlan()` pattern as
  `toggleBeauftragteLp()` (`js/plan/plan-honorar.js`). Before this, a
  project's Gewerke could only ever be set once, during creation.

### Wochenbericht — Verlauf der Vorwochen

- The Wochenbericht is the **agenda of a weekly team meeting in which every
  project is looked at**, changed or not. Completeness beats filtering here:
  proposals that hide unchanged projects or reorder the list by kind of change
  work against that routine — they force jumping between sections instead of
  working down one list.
- What is wanted instead is **being able to trace what changed from week to
  week**, as a history available on demand next to the current state. That is
  what `renderProjektVerlauf()` provides: an expandable "Verlauf" under each
  project card showing one tile per earlier session, horizontally scrollable,
  newest first. The current session is the card itself.
- **It lives in `js/utils.js`, not in one tab**, because all three places that
  show a history use it: the Wochenbericht under the project card, the project
  list, and the Verlauf dialog of the Projektbereich (`openHistoryModal()`,
  `js/plan/plan-history.js`). Each of them used to have its own version with
  its own filter — the dialog showed comment texts only, and only for sessions
  where the text actually changed — so the same project's history looked
  different depending on where you opened it and could contradict itself. The
  former "Frühere Sitzungen" expander under the comment field (a fourth, even
  narrower selection) is gone with it.
- Two things depend on `weekLabel`: with one, that session is left out (it is
  the card above) and each tile offers "übernehmen" to copy an old comment into
  the current one; **without** one — the dialog, which has no "current"
  version — all sessions are shown and no "übernehmen" button appears, since
  there would be no field to copy into.
- **No new data storage.** Every session already holds a full copy of every
  project — one tile per week — and `projectVersionsForUid()` (`js/utils.js`)
  returns them chronologically. The timeline only makes visible what was
  always there.
- A tile carries the session's comment, the LPH values, the plan's dates
  (latest date = project end, plus the next milestone) and the people assigned
  **in that week** — read from that session's `week.people`, not today's, so an
  old tile never shows people who weren't there yet.
- Values that differ from the tile *before* it are highlighted: the tiles sit
  side by side, but with ten Leistungsphasen the one changed number is
  otherwise impossible to spot.
- Rendered by `renderBoardDrawer()` (`js/board/board.js`) in **both** of its
  variants; the former `BERICHT_OPTS.timeline` flag is gone, since the history
  now hangs off every card rather than only the Wochenbericht's.

### Dashboard ("Meine Aufgaben", now the default landing tab)

**Aufbau: Kopf — Band — zwei Zonen.** Die Anordnung folgt der Frage, die beim
Blick aufs Dashboard zuerst ansteht: „Was muss ich heute anpacken?"

1. **Kopf** (`renderDashboardKopf()`) — Begrüßung und Datum links, Sitzung und
   Uhr klein rechts. Die Uhrzeit war zuvor die größte Zahl auf dem Bildschirm;
   sie ist die Angabe, nach der man am wenigsten handelt.
2. **Band** (`renderDashboardBand()`) — der Befund des Tages als **Satz**
   („8 Termine sind überfällig, 1 wird heute fällig"), daneben vier
   Kennzahlen. Zuvor standen hier vier gleich große Kacheln, von denen meist
   drei eine Null zeigten — die eine Zahl, auf die es ankommt, bekam dadurch
   kein Gewicht. Ist nichts überfällig und nichts heute fällig, wird das Band
   farblos (`.ist-ruhig`): Eine Null in Alarmfarbe behauptet ein Problem, das
   es nicht gibt. Die Zahl im Satz ist `1.15em` groß — ab 19 px fett gilt für
   den Kontrast die Schwelle für große Schrift, die Ampelfarbe erreicht auf
   der abgesetzten Bandfläche sonst nur 4,1:1 im dunklen Thema.
3. **Linke Zone** — der eigene Arbeitsstrom: „Meine Aufgaben" und „Termine
   meiner Projekte", beide in derselben `.dash-karte`.
4. **Rechte Zone** (300 px) — was man wissen muss, ohne selbst tätig zu
   werden: ausstehende Freigaben und Abwesenheiten, beide in derselben
   schmalen Zeilenform (`.dash-rand-zeile`). Zuvor stand der Urlaub eines
   Kollegen gleichrangig unter den eigenen offenen Aufgaben. Unter 1080 px
   fällt das Raster auf eine Spalte zurück.

**Aufgaben sind Zeilen, keine Karten** (`renderDashboardAufgabe()`): Eine Karte
belegte eine halbe Bildschirmbreite für vier Zeilen Inhalt. Dieselben Angaben —
Titel, Projekt, Fortschritt, Fälligkeit, Schlagwörter — stehen jetzt in einer
Zeile. Entfallen sind damit `renderStatTile()`, `renderDashboardTaskCard()`,
`renderDashboardReviewCard()`, `renderDashboardGreeting()` und die CSS-Klassen
`.dashboard-greeting`/`.dashboard-clock`/`.dashboard-absence-*`/
`.absence-chip-live`.

**Zwei Listen, die nicht dasselbe sind** — das ist der Kern dieses Bereichs:

- **Meine Aufgaben** (`tasks`): die Aufgaben, die der Person PERSÖNLICH
  zugewiesen sind (`plan_todo_assignees.person_id`), auch in Projekten, mit
  denen sie sonst nichts zu tun hat. Als Karten.
- **Termine meiner Projekte** (`projectDates`): die Aufgaben UND Meilensteine
  der PROJEKTE, denen die Person zugeordnet ist (`project_assign`, state 1
  oder 2) — unabhängig davon, wer die einzelne Aufgabe erledigt. Eine
  Projektleitung muss wissen, wann im eigenen Projekt etwas fällig wird, auch
  wenn ein anderer es abarbeitet. Als Liste, nach Dringlichkeit gegliedert
  (Überfällig / Diese Woche / Danach).

Beides zusammen beantwortet die Frage, die sonst nur durch Öffnen von dreißig
Terminplänen zu beantworten war. Details:

- **Keine Doppelung:** Was bereits unter `tasks` steht, wird aus
  `projectDates` herausgefiltert (`selbst`-Kennzeichen, serverseitig).
- **Zeitfenster 21 Tage** nach vorn; überfällige Termine bleiben dagegen ohne
  Altersgrenze stehen — eine Frist verfällt nicht dadurch, dass sie lange
  gerissen ist. Ohne die Grenze nach vorn stünden Termine aus einem Jahr in
  der Liste und die dringenden gingen darin unter.
- **Meilensteine haben kein Erledigt-Kennzeichen** (`plan_milestones` hat
  keine `done`-Spalte), deshalb zählt bei ihnen allein das Datum; bei Aufgaben
  gilt zusätzlich `done = 0` und ein gesetztes Enddatum.
- **Die Namen der Zuständigen kommen aus `week_people`**, nicht aus
  `loadGlobalPeople()`: Die globale Liste enthält nur Personen mit
  Benutzerkonto, die Teilnehmerliste einer Sitzung dagegen jede Person, die
  dort mitarbeitet. Ohne diesen Weg stand in der Liste `p_ap` statt
  „Alexander Plum".
- **Die Kachel „Überfällig"** zählt beide Listen zusammen; damit die Summe
  nachvollziehbar bleibt, kennzeichnet auch die Aufgabenkarte ein überfälliges
  Fälligkeitsdatum (`b.ist-ueberfaellig`). Eine Null bleibt neutral statt rot —
  „0 überfällig" ist eine gute Nachricht.
- Eine Zeile führt in den Terminplan des Projekts (`…#aufgaben`) — dorthin,
  wo sich der Termin ändern lässt.
- **Datumsvergleiche laufen über `heuteIso()`/`isoPlusTage()` (js/utils.js)
  bzw. `heuteIsoLokal()`/`isoPlusTageLokal()` (server.js), nicht über
  `new Date().toISOString().slice(0,10)`.** Letzteres rechnet nach UTC um: In
  deutscher Sommerzeit (UTC+2) ist damit zwischen 00:00 und 02:00 Ortszeit
  noch der Vortag gemeint — Termine von heute galten in diesem Fenster als
  überfällig, und eine heute beginnende Abwesenheit fiel aus der Liste. Die
  Feiertagsberechnung (`holidaysForYear()`) rechnet dagegen bewusst
  durchgehend in UTC (`Date.UTC`, `isoFromDate()`) und ist davon nicht
  betroffen. Serverseitig setzt die Korrektur voraus, dass der Server auf die
  Zeitzone des Büros gestellt ist — im Docker-Container also
  `TZ=Europe/Berlin`.


- `GET /my-dashboard` (Auth) is the sole data source for this tab
  (`js/dashboard/dashboard.js`, slug `MeineAufgaben`, first item in the
  sidebar nav and `DEFAULT_TAB` in `js/globals.js` — the app lands here right
  after login, not on the Projektboard). It aggregates, per
  department (`ELT`/`HLS`/`ARCH`), the caller's open TODOs from that
  department's currently unlocked week — normally there's exactly one
  (`applyAutoLock()` invariant); if that's ever violated (0 or >1 unlocked
  weeks) the server falls back to the most recent week via
  `weekSortKeyServer()`, a server-side port of `weekSortKey()`
  (`public/js/utils.js`). Tasks are matched by `plan_todo_assignees.person_id
  = req.user.personId` and sorted by due date (empty dates last). The
  response also includes `pendingReviews` (files awaiting the caller's
  review decision), populated by the file-upload feature described above.

## Docker

- `docker compose up --build` from the repo root. Compose maps `3003:3003`,
  bind-mounts `./sessions:/app/sessions`, `restart: unless-stopped` and sets
  **`TZ: Europe/Berlin`** — ohne das liefe der Container auf UTC, und die
  Datumsvergleiche des Servers (`heuteIsoLokal()`) lägen zwischen Mitternacht
  und 2 Uhr Ortszeit einen Tag zurück.
- Dockerfile: `node:22-alpine` (nötig für node:sqlite), `npm ci --production`,
  runs as non-root `node`, HEALTHCHECK on `/health`. `.dockerignore` excludes
  `Docker/*` (except `Docker/Dockerfile`), `node_modules/`, `.git`,
  `npm-debug.log`.

## Behobene Fehler (Prüfung 09/2026)

Aus einer systematischen Durchsicht (Bericht mit 58 Funden) wurden folgende
Verhaltensweisen geändert — wer den alten Zustand im Kopf hat, findet hier die
Abweichungen:

- **`GET /backup` ist admin-only** (`requireRole('admin')`). Der Snapshot
  enthält die komplette Datenbank samt `user_sessions.token` im Klartext; mit
  einem fremden Token ließ sich jede Admin-Grenze umgehen. Die Schaltfläche
  "DB Backup" steht deshalb jetzt im Admin-Bereich der Seitenleiste.
- **Die Sperre gesperrter Sitzungen wird serverseitig durchgesetzt**:
  `/save-week` weist `locked: true → false` für Nicht-Admins mit 403 ab. Das
  Sperren (false → true) bleibt jedem erlaubt, weil `applyAutoLock()` es beim
  normalen Speichern mitschreibt.
- **Anmeldung gebremst**: 10 Fehlversuche je Konto und Absender-Adresse sperren
  für 10 Minuten (429). Der Schlüssel enthält den Benutzernamen, damit nicht
  ein Tippfehler alle hinter derselben Büro-Adresse aussperrt. Bei unbekanntem
  Benutzernamen wird trotzdem einmal gehasht (sonst verriete die Antwortzeit
  gültige Konten). Abgelaufene Sitzungen werden beim Start gelöscht.
- **`loadGlobalPeople()` liefert nur Konten mit gesetzter `person_id`.** Zwei
  Konten ohne Kennung hätten sonst denselben leeren Primärschlüssel im
  Teilnehmerkreis einer Sitzung belegt und jedes Speichern mit 500 abgebrochen;
  `serializeWeek()` filtert doppelte Kennungen zusätzlich heraus.
- **`loadWeeks()` hängt Teilnehmer an, statt sie per `array_order` zu
  indizieren** — kollidierende Ordnungszahlen hätten Personen still
  überschrieben.
- **JSON-Dateien lassen sich hochladen**: Der globale `express.json()`-Parser
  läuft nicht mehr über die in `RAW_BODY_ROUTES` gelisteten Routen (`/import`,
  `POST /project-files`, `POST /project-protokolle/import` — die nehmen rohe
  Binärdaten entgegen); das Limit für Sitzungsdaten liegt bei 8 MB.
- **Der Teilnehmerkreis einer laufenden Sitzung ist wieder pflegbar**:
  `addPersonToCurrentWeek()`/`removePersonFromCurrentWeek()` in
  `js/people/people.js`. Vorher entstand `week.people` nur bei `newWeek()`, ein
  später angelegter Benutzer war in keiner laufenden Sitzung zuordenbar. Das
  Entfernen verweigert sich, solange die Person noch einem Projekt der Sitzung
  zugeordnet ist.
- **Speichern meldet sich**: `store.js` zählt Änderungen je Woche mit
  (`weekChangeCounter`), damit eine Bearbeitung WÄHREND eines laufenden
  Speichervorgangs ihre Dirty-Markierung behält; Fehler erscheinen als Band
  unten rechts (`.sync-problem-bar`), werden nach 20 Sekunden erneut versucht,
  und ein 401 öffnet wieder das Anmeldefenster. Nach einem fehlgeschlagenen
  `load()` werden **keine** Beispieldaten mehr erzeugt (`seed()` lief früher
  auch im Fehlerfall und überschrieb per `save()` die echte "KW 30 / 2026").
- **`sanitizeStatusHtml()`** packte unerlaubte Elemente mit einem falschen
  Referenzknoten aus (`insertBefore(child.firstChild, node)`) und warf dabei
  `NotFoundError` — ein eingefügter Link genügte, um das Board-Rendering
  abzubrechen. Zusätzlich werden ausgepackte Kinder jetzt erneut geprüft
  (sonst blieben `<li>`/`<tbody>` stehen) und `<script>`/`<style>` samt Inhalt
  verworfen. `esc()` maskiert nun auch `'`, weil mehrere Inline-Handler den
  Wert in einfach gequotete JS-Strings setzen.
- **Sitzungsbezeichnungen werden geprüft** (`validateWeekLabel()` in
  `js/weeks.js`): keine Dubletten (der Server schlüsselt allein über das Label)
  und Rückfrage bei fehlendem `KW …`-Muster (sonst sortiert die Sitzung hinter
  alle echten und `applyAutoLock()` sperrt den Rest).
- **Auslastung**: Die Ampel bezieht sich auf die Kapazität (gelb ab 0,75, rot
  ab 1,0) statt auf das Skalenmaximum `LOAD_BAR_MAX`; der Mittelwert teilt nur
  durch die Sitzungen, in denen die Person im Teilnehmerkreis stand.
- **Projektbereich**: Auto-Schedule terminiert Meilensteine vor ihren
  Nachfolgern, der Meilenstein-Dialog sperrt Zirkelbezüge, die Vorgängerliste
  zeigt auch die einzige vorhandene Aufgabe (`>= 1` statt `> 1`), Enter im
  Vorgänger-Suchfeld speichert nicht mehr, und das Verschieben einer
  Abwesenheit legt erst neu an, wenn das Löschen bestätigt ist.
- **Modals liegen über der Navigation** (`.modal-bg` `z-index: 300`); gesperrte
  Bedienelemente sind an `:disabled`-Regeln erkennbar.

### Nachtrag: die zunächst offen gebliebenen Punkte

- **Aufwands-Gewichtung ohne Eintrag** (`berechneAuslastung()`, `js/load/load.js`):
  Fehlt am Projekt ein Matrixwert, gilt jetzt der Wert aus der firmenweiten
  Vorlage `LP_AUFWAND_VORLAGE` für diese Phase und Rolle — vorher pauschal 1,0.
  Damit zählen zwei gleich gelagerte Projekte gleich, unabhängig davon, ob die
  Aufwandsmaske schon einmal gespeichert wurde (LPH 9 steht in der Vorlage
  bewusst auf 0). Nur wenn die Vorlage die Phase gar nicht kennt, bleibt es bei
  1,0. Das Eingabefeld zeigt den jeweiligen Vorgabewert als Platzhalter.
- **Abwesenheiten fremder Konten**: Eintragen bleibt für jedes angemeldete
  Konto erlaubt (die Projektleitung pflegt Urlaube ihres Teams mit), aber
  `user_absences.created_by` hält fest, wer den Eintrag angelegt hat.
  `DELETE /users/:id/absences/:absenceId` erlaubt das Löschen nur der
  betroffenen Person, dem Ersteller oder einem Administrator (sonst 403).
  Die Spalte wird beim Start idempotent nachgerüstet; Altbestand hat
  `created_by = 0` und ist damit nur von der betroffenen Person oder von
  Administratoren löschbar.
- **Fokus beim Speichern per Fokuswechsel** (`js/board/board.js`): Ein
  `mousedown`-Lauscher in der Capture-Phase merkt sich, in welches
  Kommentarfeld geklickt wird; nach dem Neu-Rendern stellt
  `restorePendingCommentFocus()` den Fokus dort wieder her (Cursor ans
  Textende). Die Schaltflächen "Speichern" und der Verlaufs-Aufklapper
  unterdrücken zusätzlich den Fokusverlust (`onmousedown`/`preventDefault`,
  wie zuvor schon "Verwerfen" und "übernehmen").
- **Tote Reste entfernt**: `renderGantt()`/`fitGanttRange()` in `js/gantt.js`
  (griffen auf Elemente zu, die es in keiner Seite mehr gibt), `statusBlur()`
  und `delProj()` in `js/board/board.js` (seit dem Textfeld-Editor bzw. der
  neuen Zeilendarstellung ohne Aufrufer), 16 CSS-Regelblöcke der früheren
  TODO-Liste (damals in `project-plan.html`), die wirkungslose Klasse
  `plan-main-content-full` und der gegenstandslose 900px-Umbruch.
  **`buildGanttHtml()` bleibt in `js/gantt.js`** — `js/plan/plan-build-gantt.js`
  umhüllt sie (`originalBuildGanttHtml`), sie ist also die Grundlage des
  gesamten GANTT. Der Link "Zurück zur Übersicht" in `admin-users.html` nutzt
  jetzt die neue Regel `a.secondary` statt Inline-Stilen.
- **`esc()` verträgt Nicht-Strings**: Leistungsphasen-Prozentwerte kommen je
  nach Herkunft als Zahl an; `(100).replace` ist keine Funktion und riss das
  Rendern des Wochenberichts mit. `esc()` wandelt jetzt über `String()` um
  (nur `null`/`undefined` werden zu `''`).

## Conventions & verification

- Git repo; commits are German (e.g. "PDF Export von A4 auf A3 …"). Remote:
  `http://192.168.3.187:3000/erik/projektuebersicht.git`.
- No linter, formatter, typecheck, or test suite. Manual verification only:
  start server, open `http://localhost:3003`, exercises the relevant tab,
  confirm SQLite changes (the DB file `sessions/projektuebersicht.db` grows).