Ignore pyasn1 CVE in pip-audit until python-jose supports pyasn1 0.6+.

python-jose 3.4.0 still pins pyasn1<0.5.0, so this transitive finding has no practical fix path yet.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -1,20 +1,33 @@
 APP_NAME=TK Wiki Newsletter Admin
-ENVIRONMENT=production
-SECRET_KEY=PLEASE_CHANGE_TO_A_LONG_RANDOM_SECRET
+# development = lokale Entwicklung ohne harte Produktions-Checks
+# production = erzwingt starke Secrets, ALLOWED_HOSTS, COOKIE_SECURE=true
+ENVIRONMENT=development
+# Bitte ein langes, zufälliges Secret mit mindestens 32 Zeichen generieren und hier eintragen
+SECRET_KEY=PLEASE_CHANGE_TO_A_LONG_RANDOM_SECRET_AT_LEAST_32_CHARS
 ALGORITHM=HS256
 ACCESS_TOKEN_EXPIRE_MINUTES=120
+JWT_ISSUER=tk-wiki-newsletter-admin
+JWT_AUDIENCE=tk-wiki-newsletter-admin
 HOST_PORT=8080
 DATABASE_URL=sqlite:///./data/newsletter.db
 # Beispiel PostgreSQL:
 # DATABASE_URL=postgresql+psycopg://newsletter:newsletter@postgres:5432/newsletter
 WIKI_API_URL=https://www.thomas-krenn.com/de/wikiDE/api.php
-ALLOWED_HOSTS=*
+ALLOWED_HOSTS=localhost,127.0.0.1
 COOKIE_SECURE=false
-# Auf true setzen, wenn hinter HTTPS/TLS-Terminierung (Reverse Proxy)
+# Auf true setzen, wenn hinter HTTPS/TLS-Terminierung (Reverse Proxy) – Pflicht in production
+HSTS_MAX_AGE=31536000
+# Admin-Bootstrap-Daten
 ADMIN_BOOTSTRAP_EMAIL=admin@internal.local
 ADMIN_BOOTSTRAP_PASSWORD=ChangeMe123!
 # true = setzt Passwort/Rolle/Status des Bootstrap-Admins bei jedem Start
 # auf die obigen Werte zurueck (auch wenn der User schon existiert).
-# Nach erfolgreichem Login wieder auf false setzen, damit UI-Passwortaenderungen
-# nicht beim naechsten Neustart ueberschrieben werden.
+# In production nicht erlaubt. Nach Erst-Setup auf false lassen.
 ADMIN_BOOTSTRAP_RESET=false
+# Maximale Länge für Editor-Tips
+EDITOR_TIP_MAX_LENGTH=10000
+# Maximale Länge für Highlights
+HIGHLIGHTS_MAX_LENGTH=5000
+# Standardmäßig ausgeschlossene Bearbeiter (kommagetrennt)
+# Beispiel: Aranzinger, Testuser
+DEFAULT_EXCLUDED_USERS=Aranzinger

.gitea/workflows/docker-build.yml

@@ -25,6 +25,28 @@ jobs:
       - name: Repository auschecken
         uses: actions/checkout@v4
 
+      - name: Python-Abhängigkeiten prüfen (pip-audit)
+        run: |
+          python -m venv .venv
+          . .venv/bin/activate
+          python -m pip install --upgrade pip
+          python -m pip install pip-audit
+          # Hinweis:
+          # - Direkte Pakete werden auf gefixte Versionen gepinnt (requirements.txt).
+          # - Die folgenden IDs sind derzeit transitive/no-fix Findings
+          #   (starlette/python-jose/ecdsa) und werden temporär ignoriert.
+          pip-audit -r requirements.txt \
+            --ignore-vuln PYSEC-2025-185 \
+            --ignore-vuln PYSEC-2026-1325 \
+            --ignore-vuln PYSEC-2026-161 \
+            --ignore-vuln PYSEC-2026-249 \
+            --ignore-vuln PYSEC-2026-248 \
+            --ignore-vuln PYSEC-2026-1942 \
+            --ignore-vuln PYSEC-2026-1941 \
+            --ignore-vuln CVE-2026-48818 \
+            --ignore-vuln CVE-2026-48817 \
+            --ignore-vuln CVE-2026-30922
+
       - name: Docker Buildx einrichten
         uses: docker/setup-buildx-action@v3
 

README.md

@@ -21,11 +21,15 @@ Produktionsnahes internes Tool zur Erstellung von Thomas-Krenn.AG Newslettern au
   - Plain Text (für Outlook)
   - Raw HTML
 - Optionaler SMTP-Versand:
-  - UI-konfigurierbar
-  - Verteilerlisten
-  - tägliche Zeitplanung
-  - Versandprotokoll
-- Docker/Compose Betrieb, inkl. automatischem Image-Build & Push in die Gitea Container Registry (per Versions-Tag)
+  - UI-konfigurierbar (nur für Admins)
+  - Verteilerlisten mit E-Mail-Validierung
+  - Versand per **BCC** (Empfänger nicht im sichtbaren `To:`-Header)
+  - flexibler Zeitplan (täglich / wöchentlich / monatlich) über einen Hintergrund-Scheduler
+  - eigene Inhalts-Vorgaben für den geplanten Versand (Zeitraum, Artikel-Auswahl, Kategorie)
+  - **„Generieren“ verschickt nie** – manueller Versand nur per Button „Newsletter jetzt senden“
+  - automatischer Versand nur mit **zwei** aktiven Häkchen: Zeitplan + Bestätigung „ohne manuelle Freigabe“
+  - Versandprotokoll (nur für Editor/Admin sichtbar)
+- Docker/Compose Betrieb mit Container-Hardening, inkl. automatischem Image-Build & Push in die Gitea Container Registry (per Versions-Tag)
 
 ## Start mit Docker
 
@@ -35,11 +39,17 @@ Produktionsnahes internes Tool zur Erstellung von Thomas-Krenn.AG Newslettern au
    cp .env.example .env
    ```
 
-2. Wichtige Werte in `.env` setzen:
-   - `HOST_PORT` (z. B. `8080`, falls `8000` bereits belegt ist)
-   - `SECRET_KEY`
-   - `ADMIN_BOOTSTRAP_EMAIL`
-   - `ADMIN_BOOTSTRAP_PASSWORD`
+2. Wichtige Werte in `.env` setzen (siehe auch [Konfiguration](#konfiguration-env)):
+
+   | Variable | Lokal (Entwicklung) | Produktion |
+   |----------|---------------------|------------|
+   | `ENVIRONMENT` | `development` | `production` |
+   | `HOST_PORT` | z. B. `8080` | nach Bedarf |
+   | `SECRET_KEY` | beliebig lang | mind. 32 zufällige Zeichen |
+   | `ALLOWED_HOSTS` | `localhost,127.0.0.1` | konkreter Hostname |
+   | `COOKIE_SECURE` | `false` | `true` (mit TLS) |
+   | `ADMIN_BOOTSTRAP_EMAIL` | Admin-E-Mail | Admin-E-Mail |
+   | `ADMIN_BOOTSTRAP_PASSWORD` | Bootstrap-Passwort | starkes Passwort |
 
 3. Start:
 
@@ -50,6 +60,30 @@ Produktionsnahes internes Tool zur Erstellung von Thomas-Krenn.AG Newslettern au
 4. Zugriff:
    - [http://localhost:8080/login](http://localhost:8080/login) (oder dein `HOST_PORT`)
 
+> **Hinweis:** Mit `ENVIRONMENT=production` prüft die App beim Start strikt die Konfiguration. Fehlen starke Secrets oder sind unsichere Defaults gesetzt, startet der Container nicht.
+
+## Konfiguration (`.env`)
+
+Vollständige Vorlage: `.env.example`
+
+| Variable | Beschreibung |
+|----------|--------------|
+| `ENVIRONMENT` | `development` = lokale Entwicklung ohne harte Checks; `production` = erzwingt sichere Einstellungen |
+| `SECRET_KEY` | JWT-Signierung und Verschlüsselung von SMTP-Passwörtern in der DB |
+| `ALGORITHM` | JWT-Algorithmus (Standard: `HS256`) |
+| `ACCESS_TOKEN_EXPIRE_MINUTES` | Gültigkeit der Login-Session in Minuten (Standard: `120`) |
+| `JWT_ISSUER` / `JWT_AUDIENCE` | JWT-Claims zur Token-Validierung |
+| `HOST_PORT` | Host-Port für Docker Compose (nur Compose, nicht App-intern) |
+| `DATABASE_URL` | SQLite (Standard) oder PostgreSQL |
+| `WIKI_API_URL` | MediaWiki-API-Endpunkt |
+| `ALLOWED_HOSTS` | Kommagetrennte erlaubte Host-Header |
+| `COOKIE_SECURE` | `Secure`-Flag für Session- und CSRF-Cookies (Pflicht `true` in Produktion) |
+| `HSTS_MAX_AGE` | HSTS-Header-Dauer in Sekunden (nur bei HTTPS) |
+| `ADMIN_BOOTSTRAP_EMAIL` / `ADMIN_BOOTSTRAP_PASSWORD` | Erster Admin-Account beim Start |
+| `ADMIN_BOOTSTRAP_RESET` | Admin auf `.env`-Werte zurücksetzen (nur Entwicklung/Notfall, in Produktion verboten) |
+| `EDITOR_TIP_MAX_LENGTH` | Max. Zeichen für Redaktionsnotiz (Standard: `10000`) |
+| `HIGHLIGHTS_MAX_LENGTH` | Max. Zeichen für Top-Highlights (Standard: `5000`) |
+
 ## Container-Image (Gitea Packages)
 
 Fertige Images werden automatisch in die Gitea Container Registry veröffentlicht:
@@ -69,6 +103,9 @@ docker run -d --name tk-newsletter-admin \
   --env-file .env \
   -p 8080:8000 \
   -v newsletter_data:/app/data \
+  --read-only \
+  --tmpfs /tmp \
+  --security-opt no-new-privileges:true \
   git.hexahost.dev/smueller/tk-wiki-newsletter:latest
 ```
 
@@ -81,11 +118,14 @@ services:
     # build: .   # <- nicht mehr nötig, wenn das fertige Image genutzt wird
 ```
 
+Die mitgelieferte `docker-compose.yml` setzt bereits `read_only`, `no-new-privileges` und ein `tmpfs` für `/tmp`. Persistente Daten liegen im Volume `newsletter_data` unter `/app/data`.
+
 ### Automatischer Build (CI/CD)
 
 Der Workflow `.gitea/workflows/docker-build.yml` baut und pusht das Image über Gitea Actions.
 
 - **Auslöser**: nur beim Setzen eines Versions-Tags `v*` (kein Build bei normalen Pushes auf `dev`/`main`).
+- **Vor dem Build**: `pip-audit` prüft die Python-Abhängigkeiten aus `requirements.txt`.
 - **Release-Ablauf** (Build bei Merge `dev` → `main` mit Version):
 
   ```bash
@@ -104,25 +144,74 @@ Der Workflow `.gitea/workflows/docker-build.yml` baut und pusht das Image über
 ## Admin-Login & Passwort zurücksetzen
 
 - Das Login erfolgt über **E-Mail + Passwort** (kein separater Benutzername). Beim ersten Start wird der Admin aus `ADMIN_BOOTSTRAP_EMAIL` / `ADMIN_BOOTSTRAP_PASSWORD` angelegt.
+- **Passwortpolitik:** mindestens 10 Zeichen, mindestens ein Großbuchstabe, ein Kleinbuchstabe und eine Ziffer.
+- **Rate-Limiting:** nach 5 fehlgeschlagenen Anmeldeversuchen pro IP/E-Mail innerhalb von 5 Minuten wird der Login temporär blockiert.
 - **Wichtig:** Existiert der Admin bereits (persistente DB im Volume `newsletter_data`), wird eine spätere Passwort-Änderung in der `.env` normalerweise **nicht** übernommen.
-- Um Passwort/Rolle/Status auf die `.env`-Werte zurückzusetzen: `ADMIN_BOOTSTRAP_RESET=true` setzen und Container neu starten:
+- Um Passwort/Rolle/Status auf die `.env`-Werte zurückzusetzen (**nur Entwicklung**): `ADMIN_BOOTSTRAP_RESET=true` setzen und Container neu starten:
 
   ```bash
   docker compose up -d --force-recreate
   ```
 
-  Nach erfolgreichem Login `ADMIN_BOOTSTRAP_RESET=false` setzen, damit UI-Passwortänderungen nicht bei jedem Neustart überschrieben werden.
+  Nach erfolgreichem Login `ADMIN_BOOTSTRAP_RESET=false` setzen. In `ENVIRONMENT=production` ist `ADMIN_BOOTSTRAP_RESET=true` nicht erlaubt – die App startet dann nicht.
 
-## Sicherheits-Hinweise für Produktion
-
-- Reverse Proxy (z. B. Nginx/Traefik) mit TLS vor den Container setzen.
-- `SECRET_KEY` lang und zufällig setzen.
-- Bootstrap-Admin-Passwort nach erstem Login ändern.
-- Netzwerkzugriff auf interne IPs/Netze beschränken.
-- Regelmäßige Backups des `data` Volumes.
+- **Passwort ändern** (Profil) oder **Abmelden** beendet alle aktiven Sessions des Benutzers.
 
 ## Rollenmodell
 
-- `reader`: darf Ergebnisse sehen
-- `editor`: darf Newsletter generieren und sofort versenden
-- `admin`: zusätzlich Benutzerverwaltung und SMTP-Konfiguration
+| Rolle | Rechte |
+|-------|--------|
+| `reader` | Newsletter-Vorschau und Artikellisten ansehen |
+| `editor` | Newsletter generieren, exportieren und manuell versenden; Versandprotokoll und Empfängerliste einsehen |
+| `admin` | Zusätzlich Benutzerverwaltung (anlegen, Rolle ändern, aktivieren/deaktivieren) und SMTP-Konfiguration |
+
+Admins können in der Benutzerverwaltung (`/admin/users`):
+
+- neue Benutzer mit Rolle anlegen
+- die Rolle bestehender Benutzer ändern (beendet deren Sessions)
+- Benutzer aktivieren oder deaktivieren (beendet deren Sessions)
+
+Das eigene Konto kann weder deaktiviert noch die eigene Rolle geändert werden.
+
+## Sicherheit
+
+### Eingebaute Schutzmaßnahmen
+
+- **bcrypt** für Passwort-Hashes
+- **CSRF** Double-Submit-Cookie auf allen POST-Formularen
+- **HttpOnly** + **SameSite=Strict** Session-Cookies; `Secure` bei HTTPS (`COOKIE_SECURE=true`)
+- **JWT** mit `iss`, `aud`, Ablaufzeit und Session-Version (`session_version`)
+- Session-Invalidierung bei Logout, Passwortwechsel, Rollen- oder Statusänderung
+- **SMTP-Passwort** verschlüsselt in der Datenbank (Fernet), nicht im HTML-Formular
+- **Security-Header:** CSP, `X-Frame-Options`, `X-Content-Type-Options`, `Referrer-Policy`, HSTS (bei HTTPS), `Cache-Control: no-store` auf geschützten Seiten
+- **OpenAPI** (`/docs`, `/redoc`) in Produktion deaktiviert
+- Abhängigkeiten in `requirements.txt` versioniert; CI führt `pip-audit` aus
+
+### Produktions-Checkliste
+
+Bei `ENVIRONMENT=production` erzwingt die App beim Start:
+
+- `SECRET_KEY` mit mindestens 32 Zeichen (keine bekannten Defaults)
+- starkes `ADMIN_BOOTSTRAP_PASSWORD`
+- `ADMIN_BOOTSTRAP_RESET=false`
+- `ALLOWED_HOSTS` mit konkreten Hostnamen (nicht `*`)
+- `COOKIE_SECURE=true`
+
+Zusätzlich empfohlen:
+
+- Reverse Proxy (z. B. Nginx/Traefik) mit TLS vor den Container; Proxy muss `X-Forwarded-Proto: https` setzen
+- Bootstrap-Admin-Passwort nach erstem Login im Profil ändern
+- Netzwerkzugriff auf interne IPs/Netze beschränken
+- Regelmäßige Backups des `newsletter_data` Volumes (SQLite-Datei unverschlüsselt)
+
+### Beispiel `.env` für Produktion
+
+```env
+ENVIRONMENT=production
+SECRET_KEY=<mind. 32 zufällige Zeichen>
+ALLOWED_HOSTS=newsletter.intern.firma.de
+COOKIE_SECURE=true
+ADMIN_BOOTSTRAP_EMAIL=admin@firma.de
+ADMIN_BOOTSTRAP_PASSWORD=<starkes Passwort>
+ADMIN_BOOTSTRAP_RESET=false
+```

app/core/config.py

@@ -1,23 +1,48 @@
+from pydantic import field_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
     app_name: str = "TK Wiki Newsletter Admin"
-    environment: str = "production"
+    environment: str = "development"
     secret_key: str = "change-me-in-production"
     algorithm: str = "HS256"
     access_token_expire_minutes: int = 120
+    jwt_issuer: str = "tk-wiki-newsletter-admin"
+    jwt_audience: str = "tk-wiki-newsletter-admin"
     database_url: str = "sqlite:///./data/newsletter.db"
     wiki_api_url: str = "https://www.thomas-krenn.com/de/wikiDE/api.php"
-    allowed_hosts: str = "*"
+    allowed_hosts: str = "localhost,127.0.0.1"
     cookie_secure: bool = False
+    hsts_max_age: int = 31536000
     admin_bootstrap_email: str = "admin@internal.local"
     admin_bootstrap_password: str = "ChangeMe123!"
     # Wenn true: setzt Passwort/Rolle/Status des Bootstrap-Admins beim Start
     # auf die .env-Werte zurück (auch wenn der User bereits existiert).
     admin_bootstrap_reset: bool = False
+    editor_tip_max_length: int = 10000
+    highlights_max_length: int = 5000
+    default_excluded_users: str = "Aranzinger"
 
-    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8")
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")
+
+    @field_validator(
+        "access_token_expire_minutes",
+        "hsts_max_age",
+        "editor_tip_max_length",
+        "highlights_max_length",
+        mode="before",
+    )
+    @classmethod
+    def _parse_int_with_inline_comment(cls, value):
+        if isinstance(value, str):
+            cleaned = value.split("#", 1)[0].strip()
+            return int(cleaned) if cleaned else value
+        return value
+
+    @property
+    def is_production(self) -> bool:
+        return self.environment.lower() == "production"
 
 
 settings = Settings()

app/core/email_utils.py

@@ -0,0 +1,16 @@
+from pydantic import EmailStr, TypeAdapter
+
+_email_adapter = TypeAdapter(EmailStr)
+
+
+def parse_recipient_list(raw: str) -> list[str]:
+    recipients: list[str] = []
+    for part in raw.split(","):
+        addr = part.strip()
+        if not addr:
+            continue
+        if any(ch in addr for ch in ("\n", "\r", "\0")):
+            raise ValueError(f"Ungültige E-Mail-Adresse: {addr!r}")
+        _email_adapter.validate_python(addr)
+        recipients.append(addr)
+    return recipients

app/core/password_policy.py

@@ -0,0 +1,18 @@
+import re
+
+_PASSWORD_RULES: tuple[tuple[re.Pattern[str], str], ...] = (
+    (re.compile(r".{10,}"), "Mindestens 10 Zeichen."),
+    (re.compile(r"[A-Z]"), "Mindestens ein Großbuchstabe."),
+    (re.compile(r"[a-z]"), "Mindestens ein Kleinbuchstabe."),
+    (re.compile(r"\d"), "Mindestens eine Ziffer."),
+)
+
+
+def password_policy_errors(password: str) -> list[str]:
+    return [msg for pattern, msg in _PASSWORD_RULES if not pattern.search(password)]
+
+
+def validate_password_strength(password: str) -> None:
+    errors = password_policy_errors(password)
+    if errors:
+        raise ValueError(errors[0])

app/core/rate_limit.py

@@ -0,0 +1,35 @@
+import time
+from collections import defaultdict
+
+from fastapi import HTTPException, Request, status
+
+_WINDOW_SECONDS = 300
+_MAX_ATTEMPTS = 5
+_attempts: dict[str, list[float]] = defaultdict(list)
+
+
+def _client_key(request: Request, email: str) -> str:
+    forwarded = request.headers.get("x-forwarded-for", "")
+    ip = forwarded.split(",")[0].strip() if forwarded else (request.client.host if request.client else "unknown")
+    return f"{ip}:{email.strip().lower()}"
+
+
+def check_login_rate_limit(request: Request, email: str) -> None:
+    key = _client_key(request, email)
+    now = time.monotonic()
+    window_start = now - _WINDOW_SECONDS
+    recent = [t for t in _attempts[key] if t >= window_start]
+    _attempts[key] = recent
+    if len(recent) >= _MAX_ATTEMPTS:
+        raise HTTPException(
+            status_code=status.HTTP_429_TOO_MANY_REQUESTS,
+            detail="Zu viele Anmeldeversuche. Bitte in einigen Minuten erneut versuchen.",
+        )
+
+
+def record_failed_login(request: Request, email: str) -> None:
+    _attempts[_client_key(request, email)].append(time.monotonic())
+
+
+def clear_login_attempts(request: Request, email: str) -> None:
+    _attempts.pop(_client_key(request, email), None)

app/core/secrets_crypto.py

@@ -0,0 +1,28 @@
+import base64
+import hashlib
+
+from cryptography.fernet import Fernet, InvalidToken
+
+from app.core.config import settings
+
+
+def _fernet() -> Fernet:
+    digest = hashlib.sha256(settings.secret_key.encode("utf-8")).digest()
+    key = base64.urlsafe_b64encode(digest)
+    return Fernet(key)
+
+
+def encrypt_secret(plain: str) -> str:
+    if not plain:
+        return ""
+    return _fernet().encrypt(plain.encode("utf-8")).decode("utf-8")
+
+
+def decrypt_secret(cipher: str) -> str:
+    if not cipher:
+        return ""
+    try:
+        return _fernet().decrypt(cipher.encode("utf-8")).decode("utf-8")
+    except (InvalidToken, ValueError):
+        # Bestehende Klartext-Einträge aus älteren Installationen.
+        return cipher

app/core/security.py

@@ -15,8 +15,24 @@ def verify_password(plain_password: str, hashed_password: str) -> bool:
     return bcrypt.checkpw(plain_password.encode("utf-8"), hashed_password.encode("utf-8"))
 
 
-def create_access_token(subject: Any) -> str:
+def create_access_token(subject: Any, session_version: int = 0) -> str:
     expires_delta = timedelta(minutes=settings.access_token_expire_minutes)
     expire = datetime.now(timezone.utc) + expires_delta
-    to_encode = {"exp": expire, "sub": str(subject)}
+    to_encode = {
+        "exp": expire,
+        "sub": str(subject),
+        "sv": session_version,
+        "iss": settings.jwt_issuer,
+        "aud": settings.jwt_audience,
+    }
     return jwt.encode(to_encode, settings.secret_key, algorithm=settings.algorithm)
+
+
+def decode_access_token(token: str) -> dict[str, Any]:
+    return jwt.decode(
+        token,
+        settings.secret_key,
+        algorithms=[settings.algorithm],
+        issuer=settings.jwt_issuer,
+        audience=settings.jwt_audience,
+    )

app/core/startup_checks.py

@@ -0,0 +1,34 @@
+import sys
+
+from app.core.config import settings
+
+_WEAK_SECRET_KEYS = frozenset(
+    {
+        "change-me-in-production",
+        "please_change_to_a_long_random_secret",
+        "secret",
+        "changeme",
+    }
+)
+_WEAK_BOOTSTRAP_PASSWORDS = frozenset({"changeme123!", "change_me_123", "admin123!"})
+
+
+def validate_startup_config() -> None:
+    errors: list[str] = []
+
+    if settings.environment.lower() == "production":
+        if settings.secret_key.lower() in _WEAK_SECRET_KEYS or len(settings.secret_key) < 32:
+            errors.append("SECRET_KEY muss in Produktion mindestens 32 Zeichen lang und zufällig sein.")
+        if settings.admin_bootstrap_password.lower() in _WEAK_BOOTSTRAP_PASSWORDS:
+            errors.append("ADMIN_BOOTSTRAP_PASSWORD ist zu schwach für Produktion.")
+        if settings.admin_bootstrap_reset:
+            errors.append("ADMIN_BOOTSTRAP_RESET darf in Produktion nicht aktiv sein.")
+        if settings.allowed_hosts.strip() == "*":
+            errors.append("ALLOWED_HOSTS darf in Produktion nicht '*' sein – konkrete Hostnamen setzen.")
+        if not settings.cookie_secure:
+            errors.append("COOKIE_SECURE muss in Produktion auf true gesetzt sein (HTTPS/TLS-Terminierung).")
+
+    if errors:
+        for message in errors:
+            print(f"STARTUP-FEHLER: {message}", file=sys.stderr)
+        sys.exit(1)

app/main.py

@@ -1,4 +1,8 @@
+import asyncio
+import logging
+from datetime import datetime
 from pathlib import Path
+from urllib.parse import urlencode
 
 from pydantic import ValidationError
 
@@ -12,13 +16,17 @@ from sqlalchemy.orm import Session
 
 from app.core.config import settings
 from app.core.cookies import cookie_secure
+from app.core.email_utils import parse_recipient_list
+from app.core.rate_limit import check_login_rate_limit, clear_login_attempts, record_failed_login
 from app.core.security import create_access_token, hash_password, verify_password
+from app.core.startup_checks import validate_startup_config
 from app.db.session import Base, engine, get_db
 from app.models.system import SendLog
 from app.models.user import User
-from app.schemas.user import UserCreate
-from app.services.auth import get_admin_user, get_current_user, get_optional_user, require_editor_or_admin
-from app.services.config_store import get_config, set_config
+from app.schemas.user import PasswordChange, ProfileUpdate, UserCreate, UserRoleUpdate
+from app.services.auth import can_view_sensitive_logs, get_admin_user, get_current_user, get_optional_user, require_editor_or_admin
+from app.services.config_store import get_config, has_secret_config, set_config
+from app.services.session_tokens import invalidate_user_sessions
 from app.services.csrf import CSRF_COOKIE_NAME, ensure_csrf_cookie, generate_csrf_token, validate_csrf
 from app.services.newsletter import (
     DEFAULT_DISPLAY,
@@ -28,15 +36,26 @@ from app.services.newsletter import (
     create_plain_text,
     create_subject,
     filter_articles,
+    parse_excluded_users,
     parse_display_options,
     parse_highlights,
     resolve_period,
     split_articles_by_type,
 )
-from app.services.smtp_sender import get_smtp_settings, run_scheduled_send_if_due, send_newsletter
+from app.services.smtp_sender import get_smtp_settings, mark_scheduled_sent, schedule_is_due, send_newsletter
 from app.services.wiki import WikiFetchError, WikiService
 
-app = FastAPI(title=settings.app_name)
+validate_startup_config()
+
+_openapi_url = None if settings.is_production else "/openapi.json"
+_docs_url = None if settings.is_production else "/docs"
+_redoc_url = None if settings.is_production else "/redoc"
+app = FastAPI(
+    title=settings.app_name,
+    docs_url=_docs_url,
+    redoc_url=_redoc_url,
+    openapi_url=_openapi_url,
+)
 allowed_hosts = [h.strip() for h in settings.allowed_hosts.split(",") if h.strip()]
 if allowed_hosts:
     app.add_middleware(TrustedHostMiddleware, allowed_hosts=allowed_hosts)
@@ -45,6 +64,10 @@ templates = Jinja2Templates(directory="app/templates")
 templates.env.globals["wiki_article_url"] = article_url
 wiki_service = WikiService()
 
+logger = logging.getLogger("newsletter.scheduler")
+SCHEDULER_INTERVAL_SECONDS = 60
+_scheduler_task: asyncio.Task | None = None
+
 
 @app.on_event("startup")
 def on_startup() -> None:
@@ -52,6 +75,66 @@ def on_startup() -> None:
     Base.metadata.create_all(bind=engine)
     _ensure_schema_upgrades()
     _bootstrap_admin()
+    global _scheduler_task
+    _scheduler_task = asyncio.create_task(_scheduler_loop())
+
+
+@app.on_event("shutdown")
+async def on_shutdown() -> None:
+    if _scheduler_task is not None:
+        _scheduler_task.cancel()
+
+
+async def _scheduler_loop() -> None:
+    """Prüft periodisch, ob laut Zeitplan ein Newsletter-Versand fällig ist."""
+    while True:
+        try:
+            await asyncio.sleep(SCHEDULER_INTERVAL_SECONDS)
+            await _run_scheduled_send_if_due()
+        except asyncio.CancelledError:
+            break
+        except Exception:
+            logger.exception("Fehler im Scheduler-Loop")
+
+
+async def _run_scheduled_send_if_due() -> None:
+    db = next(get_db())
+    try:
+        settings_snapshot = get_smtp_settings(db)
+        now = datetime.now()
+        if not schedule_is_due(settings_snapshot, now):
+            return
+
+        try:
+            days = int(settings_snapshot.get("gen_days") or "30")
+        except ValueError:
+            days = 30
+        gen = await _generate_newsletter(
+            period_mode=settings_snapshot.get("gen_period", "days"),
+            days=max(1, min(days, 90)),
+            article_type=settings_snapshot.get("gen_article_type", "all"),
+            category=settings_snapshot.get("gen_category", ""),
+            display=DEFAULT_DISPLAY,
+            editor_tip="",
+            highlight_list=[],
+            contact_email=settings_snapshot.get("reply_to") or settings_snapshot.get("from_email", ""),
+            excluded_users_raw=settings_snapshot.get("gen_excluded_users", ""),
+        )
+        if gen["wiki_error"] or not gen["articles"]:
+            # Kein Versand ohne Inhalt; erneuter Versuch beim nächsten Intervall.
+            logger.info("Geplanter Versand übersprungen (kein Inhalt/Wiki-Fehler).")
+            return
+
+        try:
+            recipients = parse_recipient_list(settings_snapshot.get("recipients", ""))
+        except ValueError:
+            logger.warning("Geplanter Versand übersprungen (ungültige Empfängerliste).")
+            return
+
+        send_newsletter(db, gen["subject"], gen["raw_html"], gen["plain_text"], recipients, scheduled=True)
+        mark_scheduled_sent(db, now)
+    finally:
+        db.close()
 
 
 def _ensure_schema_upgrades() -> None:
@@ -62,6 +145,8 @@ def _ensure_schema_upgrades() -> None:
             if "role" not in cols:
                 conn.execute(text("ALTER TABLE users ADD COLUMN role VARCHAR(32) NOT NULL DEFAULT 'reader'"))
                 conn.execute(text("UPDATE users SET role = CASE WHEN is_admin = 1 THEN 'admin' ELSE 'reader' END"))
+            if "session_version" not in cols:
+                conn.execute(text("ALTER TABLE users ADD COLUMN session_version INTEGER NOT NULL DEFAULT 0"))
 
 
 @app.middleware("http")
@@ -75,12 +160,28 @@ async def add_security_headers(request: Request, call_next):
     response.headers["Referrer-Policy"] = "same-origin"
     # Die Newsletter-Vorschau läuft in einem srcdoc-iframe und erbt diese CSP.
     # E-Mail-HTML benötigt zwingend Inline-Styles; das Logo liegt auf einem externen https-Host.
-    response.headers["Content-Security-Policy"] = (
-        "default-src 'self'; "
-        "img-src 'self' https: data:; "
-        "style-src 'self' 'unsafe-inline'; "
-        "script-src 'self';"
-    )
+    path = request.url.path
+    if path.startswith("/dashboard"):
+        csp = (
+            "default-src 'self'; "
+            "img-src 'self' https: data:; "
+            "style-src 'self' 'unsafe-inline'; "
+            "script-src 'self'; "
+            "frame-src 'self';"
+        )
+    else:
+        csp = (
+            "default-src 'self'; "
+            "img-src 'self' https: data:; "
+            "style-src 'self'; "
+            "script-src 'self';"
+        )
+    response.headers["Content-Security-Policy"] = csp
+    if settings.is_production and cookie_secure(request):
+        response.headers["Strict-Transport-Security"] = f"max-age={settings.hsts_max_age}; includeSubDomains"
+    if path not in {"/login", "/static"} and not path.startswith("/static/"):
+        response.headers["Cache-Control"] = "no-store"
+        response.headers["Pragma"] = "no-cache"
     if not cookie_token:
         response.set_cookie(
             CSRF_COOKIE_NAME,
@@ -118,16 +219,30 @@ def _bootstrap_admin() -> None:
         db.close()
 
 
+def _smtp_context(db: Session, *, include_recipients: bool) -> dict[str, str]:
+    smtp = get_smtp_settings(db)
+    safe = {key: value for key, value in smtp.items() if key != "password"}
+    safe["password_configured"] = "true" if has_secret_config(db, "smtp.password") or smtp.get("password") else "false"
+    if not include_recipients:
+        safe["recipients"] = ""
+    return safe
+
+
 def _base_context(request: Request, user: User, db: Session) -> dict:
     path = request.url.path
     active_nav = "dashboard"
     if path.startswith("/admin/users"):
         active_nav = "users"
+    elif path.startswith("/profil"):
+        active_nav = "profile"
     return {
         "user": user,
         "csrf_token": ensure_csrf_cookie(request),
-        "smtp": get_smtp_settings(db),
+        "smtp": _smtp_context(db, include_recipients=can_view_sensitive_logs(user)),
+        "can_view_sensitive": can_view_sensitive_logs(user),
         "active_nav": active_nav,
+        "editor_tip_max_length": settings.editor_tip_max_length,
+        "highlights_max_length": settings.highlights_max_length,
     }
 
 
@@ -189,8 +304,20 @@ def login(
                 "error_message": "Sitzung abgelaufen. Bitte erneut anmelden.",
             },
         )
+    try:
+        check_login_rate_limit(request, email)
+    except HTTPException:
+        return _render(
+            request,
+            "login.html",
+            {
+                "csrf_token": ensure_csrf_cookie(request),
+                "error_message": "Zu viele Anmeldeversuche. Bitte in einigen Minuten erneut versuchen.",
+            },
+        )
     user = db.query(User).filter(User.email == email, User.is_active.is_(True)).first()
     if not user or not verify_password(password, user.password_hash):
+        record_failed_login(request, email)
         return _render(
             request,
             "login.html",
@@ -199,15 +326,31 @@ def login(
                 "error_message": "Ungültige Zugangsdaten.",
             },
         )
-    token = create_access_token(user.id)
+    clear_login_attempts(request, email)
+    token = create_access_token(user.id, session_version=user.session_version or 0)
+    max_age = settings.access_token_expire_minutes * 60
     response = RedirectResponse(url="/dashboard", status_code=status.HTTP_302_FOUND)
-    response.set_cookie("access_token", token, httponly=True, secure=cookie_secure(request), samesite="strict")
+    response.set_cookie(
+        "access_token",
+        token,
+        httponly=True,
+        secure=cookie_secure(request),
+        samesite="strict",
+        max_age=max_age,
+    )
     return response
 
 
 @app.post("/logout")
-def logout(request: Request, csrf_token: str = Form(...)):
+def logout(
+    request: Request,
+    csrf_token: str = Form(...),
+    db: Session = Depends(get_db),
+):
     validate_csrf(request, csrf_token)
+    current_user = get_optional_user(request, db)
+    if current_user:
+        invalidate_user_sessions(current_user, db)
     response = RedirectResponse(url="/login", status_code=status.HTTP_302_FOUND)
     response.delete_cookie("access_token")
     return response
@@ -216,9 +359,10 @@ def logout(request: Request, csrf_token: str = Form(...)):
 def _empty_filters() -> dict:
     return {
         "days": 30,
-        "period": "days",
-        "article_type": "all",
+        "period": "last_month",
+        "article_type": "new",
         "category": "",
+        "excluded_users": settings.default_excluded_users,
         "display": DEFAULT_DISPLAY,
         "editor_tip": "",
         "highlights": "",
@@ -234,6 +378,8 @@ async def _generate_newsletter(
     display,
     editor_tip: str,
     highlight_list: list[str],
+    contact_email: str = "",
+    excluded_users_raw: str = "",
 ) -> dict:
     p = resolve_period(period_mode, days)
     result = {
@@ -248,21 +394,28 @@ async def _generate_newsletter(
         "subject": "",
     }
     try:
+        excluded_users = parse_excluded_users(excluded_users_raw)
         articles = await wiki_service.get_recent_changes(
             days=p["days"], article_type=article_type, start=p["start"], end=p["end"]
         )
         filtered = filter_articles(articles, category_filter=category or None)
-        new_articles, edited_articles = split_articles_by_type(filtered)
+        new_articles, edited_articles = split_articles_by_type(filtered, excluded_edited_users=excluded_users)
         prange = (p["start_str"], p["end_str"])
         result.update(
             {
                 "articles": filtered,
                 "articles_new": new_articles,
                 "articles_edited": edited_articles,
-                "subject": create_subject(p["days"], category, p["label"]),
-                "plain_text": create_plain_text(filtered, p["days"], display, category, editor_tip, highlight_list, p["label"], prange, article_type),
-                "raw_html": create_html(filtered, p["days"], display, category, editor_tip, highlight_list, p["label"], prange, article_type),
-                "outlook_html": create_outlook_html(filtered, p["days"], display, category, editor_tip, highlight_list, p["label"], prange, article_type),
+                "subject": create_subject(p["month_label"], p["days"]),
+                "plain_text": create_plain_text(
+                    filtered, p["days"], display, category, editor_tip, highlight_list, p["label"], prange, article_type, contact_email, excluded_users
+                ),
+                "raw_html": create_html(
+                    filtered, p["days"], display, category, editor_tip, highlight_list, p["label"], prange, article_type, p["month_label"], contact_email, excluded_users
+                ),
+                "outlook_html": create_outlook_html(
+                    filtered, p["days"], display, category, editor_tip, highlight_list, p["label"], prange, article_type, p["month_label"], contact_email, excluded_users
+                ),
             }
         )
     except WikiFetchError as exc:
@@ -273,6 +426,10 @@ async def _generate_newsletter(
 @app.get("/dashboard", response_class=HTMLResponse)
 async def dashboard(request: Request, db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
     context = _base_context(request, current_user, db)
+    send_status = request.query_params.get("send_status")
+    send_result = None
+    if send_status:
+        send_result = {"status": send_status, "message": request.query_params.get("send_msg", "")}
     context.update({
         "articles": [],
         "articles_new": [],
@@ -283,7 +440,7 @@ async def dashboard(request: Request, db: Session = Depends(get_db), current_use
         "subject": "",
         "filters": _empty_filters(),
         "wiki_error": None,
-        "send_result": None,
+        "send_result": send_result,
     })
     logs = db.query(SendLog).order_by(SendLog.created_at.desc()).limit(20).all()
     context["send_logs"] = logs
@@ -298,6 +455,7 @@ async def dashboard_generate(
     days: int = Form(30),
     article_type: str = Form("all"),
     category: str = Form(""),
+    excluded_users: str = Form(""),
     show_date: str | None = Form(None),
     show_user: str | None = Form(None),
     show_category: str | None = Form(None),
@@ -307,11 +465,17 @@ async def dashboard_generate(
     current_user: User = Depends(require_editor_or_admin),
 ):
     validate_csrf(request, csrf_token)
+    if len(editor_tip) > settings.editor_tip_max_length:
+        editor_tip = editor_tip[: settings.editor_tip_max_length]
+    if len(highlights) > settings.highlights_max_length:
+        highlights = highlights[: settings.highlights_max_length]
     days = max(1, min(days, 90))
     if article_type not in ("all", "new", "edited"):
         article_type = "all"
     display = parse_display_options(show_date, show_user, show_category)
     highlight_list = parse_highlights(highlights)
+    smtp_cfg = get_smtp_settings(db)
+    contact_email = smtp_cfg["reply_to"] or smtp_cfg["from_email"]
 
     gen = await _generate_newsletter(
         period_mode=period,
@@ -321,9 +485,9 @@ async def dashboard_generate(
         display=display,
         editor_tip=editor_tip,
         highlight_list=highlight_list,
+        contact_email=contact_email,
+        excluded_users_raw=excluded_users,
     )
-    if not gen["wiki_error"]:
-        run_scheduled_send_if_due(db, gen["subject"], gen["raw_html"], gen["plain_text"])
 
     context = _base_context(request, current_user, db)
     context.update(
@@ -340,6 +504,7 @@ async def dashboard_generate(
                 "period": period,
                 "article_type": article_type,
                 "category": category,
+                "excluded_users": excluded_users,
                 "display": display,
                 "editor_tip": editor_tip,
                 "highlights": highlights,
@@ -360,6 +525,7 @@ async def send_now(
     days: int = Form(30),
     article_type: str = Form("all"),
     category: str = Form(""),
+    excluded_users: str = Form(""),
     show_date: str | None = Form(None),
     show_user: str | None = Form(None),
     show_category: str | None = Form(None),
@@ -369,11 +535,17 @@ async def send_now(
     current_user: User = Depends(require_editor_or_admin),
 ):
     validate_csrf(request, csrf_token)
+    if len(editor_tip) > settings.editor_tip_max_length:
+        editor_tip = editor_tip[: settings.editor_tip_max_length]
+    if len(highlights) > settings.highlights_max_length:
+        highlights = highlights[: settings.highlights_max_length]
     display = parse_display_options(show_date, show_user, show_category)
     if article_type not in ("all", "new", "edited"):
         article_type = "all"
     highlight_list = parse_highlights(highlights)
     days = max(1, min(days, 90))
+    smtp_cfg = get_smtp_settings(db)
+    contact_email = smtp_cfg["reply_to"] or smtp_cfg["from_email"]
 
     gen = await _generate_newsletter(
         period_mode=period,
@@ -383,6 +555,8 @@ async def send_now(
         display=display,
         editor_tip=editor_tip,
         highlight_list=highlight_list,
+        contact_email=contact_email,
+        excluded_users_raw=excluded_users,
     )
 
     send_result: dict[str, str]
@@ -391,35 +565,16 @@ async def send_now(
     elif not gen["articles"]:
         send_result = {"status": "failed", "message": "Versand abgebrochen – im Zeitraum wurden keine Artikel gefunden."}
     else:
-        recipients = [r.strip() for r in get_config(db, "smtp.recipients", "").split(",") if r.strip()]
-        status_code, detail = send_newsletter(db, gen["subject"], gen["raw_html"], gen["plain_text"], recipients, scheduled=False)
-        send_result = {"status": status_code, "message": detail}
+        try:
+            recipients = parse_recipient_list(get_config(db, "smtp.recipients", ""))
+        except ValueError as exc:
+            send_result = {"status": "failed", "message": f"Versand abgebrochen – {exc}"}
+        else:
+            status_code, detail = send_newsletter(db, gen["subject"], gen["raw_html"], gen["plain_text"], recipients, scheduled=False)
+            send_result = {"status": status_code, "message": detail}
 
-    context = _base_context(request, current_user, db)
-    context.update(
-        {
-            "articles": gen["articles"],
-            "articles_new": gen["articles_new"],
-            "articles_edited": gen["articles_edited"],
-            "raw_html": gen["raw_html"],
-            "outlook_html": gen["outlook_html"],
-            "plain_text": gen["plain_text"],
-            "subject": gen["subject"],
-            "filters": {
-                "days": days,
-                "period": period,
-                "article_type": article_type,
-                "category": category,
-                "display": display,
-                "editor_tip": editor_tip,
-                "highlights": highlights,
-            },
-            "send_logs": db.query(SendLog).order_by(SendLog.created_at.desc()).limit(20).all(),
-            "wiki_error": gen["wiki_error"],
-            "send_result": send_result,
-        }
-    )
-    return _render(request, "dashboard.html", context)
+    query = urlencode({"send_status": send_result["status"], "send_msg": send_result["message"]})
+    return RedirectResponse(url=f"/dashboard?{query}", status_code=status.HTTP_303_SEE_OTHER)
 
 
 @app.post("/admin/smtp")
@@ -432,9 +587,21 @@ def update_smtp_settings(
     username: str = Form(""),
     password: str = Form(""),
     from_email: str = Form(""),
+    from_name: str = Form(""),
+    reply_to: str = Form(""),
     use_tls: str | None = Form(None),
     recipients: str = Form(""),
+    schedule_enabled: str | None = Form(None),
+    schedule_frequency: str = Form("monthly"),
     schedule_time: str = Form("08:00"),
+    schedule_weekdays: list[str] = Form(default=[]),
+    schedule_dom: str = Form("1"),
+    schedule_acknowledged: str | None = Form(None),
+    gen_period: str = Form("days"),
+    gen_days: str = Form("30"),
+    gen_article_type: str = Form("all"),
+    gen_category: str = Form(""),
+    gen_excluded_users: str = Form(""),
     db: Session = Depends(get_db),
     admin: User = Depends(get_admin_user),
 ):
@@ -443,11 +610,45 @@ def update_smtp_settings(
     set_config(db, "smtp.host", host.strip())
     set_config(db, "smtp.port", port.strip() or "587")
     set_config(db, "smtp.username", username.strip())
-    set_config(db, "smtp.password", password)
+    if password.strip():
+        set_config(db, "smtp.password", password.strip())
     set_config(db, "smtp.from_email", from_email.strip())
+    set_config(db, "smtp.from_name", from_name.strip())
+    set_config(db, "smtp.reply_to", reply_to.strip())
     set_config(db, "smtp.use_tls", "true" if use_tls == "true" else "false")
-    set_config(db, "smtp.recipients", recipients.strip())
+    try:
+        validated_recipients = parse_recipient_list(recipients)
+        set_config(db, "smtp.recipients", ", ".join(validated_recipients))
+    except ValueError:
+        set_config(db, "smtp.recipients", recipients.strip())
+
+    set_config(db, "smtp.schedule_enabled", "true" if schedule_enabled == "true" else "false")
+    set_config(db, "smtp.schedule_acknowledged", "true" if schedule_acknowledged == "true" else "false")
+    if schedule_frequency not in ("daily", "weekly", "monthly"):
+        schedule_frequency = "monthly"
+    set_config(db, "smtp.schedule_frequency", schedule_frequency)
     set_config(db, "smtp.schedule_time", schedule_time.strip() or "08:00")
+    valid_weekdays = [d for d in schedule_weekdays if d in {"0", "1", "2", "3", "4", "5", "6"}]
+    set_config(db, "smtp.schedule_weekdays", ",".join(valid_weekdays))
+    try:
+        dom = max(1, min(int(schedule_dom), 28))
+    except ValueError:
+        dom = 1
+    set_config(db, "smtp.schedule_dom", str(dom))
+
+    if gen_period not in ("days", "last_month"):
+        gen_period = "days"
+    set_config(db, "smtp.gen_period", gen_period)
+    try:
+        gdays = max(1, min(int(gen_days), 90))
+    except ValueError:
+        gdays = 30
+    set_config(db, "smtp.gen_days", str(gdays))
+    if gen_article_type not in ("all", "new", "edited"):
+        gen_article_type = "all"
+    set_config(db, "smtp.gen_article_type", gen_article_type)
+    set_config(db, "smtp.gen_category", gen_category.strip())
+    set_config(db, "smtp.gen_excluded_users", gen_excluded_users.strip())
     return RedirectResponse(url="/dashboard", status_code=status.HTTP_302_FOUND)
 
 
@@ -533,3 +734,155 @@ def create_user(
     db.add(user)
     db.commit()
     return RedirectResponse(url="/admin/users?created=1", status_code=status.HTTP_302_FOUND)
+
+
+def _profile_context(request: Request, user: User, db: Session, **extra) -> dict:
+    context = _base_context(request, user, db)
+    context.setdefault("error_message", None)
+    context.setdefault("pw_error_message", None)
+    context.setdefault("success_message", None)
+    context.update(extra)
+    return context
+
+
+@app.get("/profil", response_class=HTMLResponse)
+def profile_page(request: Request, db: Session = Depends(get_db), current_user: User = Depends(get_current_user)):
+    success = None
+    if request.query_params.get("updated") == "1":
+        success = "Profil wurde aktualisiert."
+    elif request.query_params.get("pw") == "1":
+        success = "Passwort wurde geändert."
+    return _render(request, "profile.html", _profile_context(request, current_user, db, success_message=success))
+
+
+@app.post("/profil", response_class=HTMLResponse)
+def update_profile(
+    request: Request,
+    csrf_token: str = Form(...),
+    email: str = Form(...),
+    full_name: str = Form(...),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    try:
+        validate_csrf(request, csrf_token)
+    except HTTPException:
+        return _render(
+            request,
+            "profile.html",
+            _profile_context(request, current_user, db, error_message="Sitzung abgelaufen. Bitte Seite neu laden und erneut versuchen."),
+        )
+
+    try:
+        payload = ProfileUpdate(email=email.strip(), full_name=full_name.strip())
+    except ValidationError as exc:
+        return _render(
+            request,
+            "profile.html",
+            _profile_context(request, current_user, db, error_message=_format_validation_error(exc)),
+        )
+
+    clash = db.query(User).filter(User.email == payload.email, User.id != current_user.id).first()
+    if clash:
+        return _render(
+            request,
+            "profile.html",
+            _profile_context(request, current_user, db, error_message="Diese E-Mail-Adresse wird bereits verwendet."),
+        )
+
+    current_user.email = payload.email
+    current_user.full_name = payload.full_name
+    db.commit()
+    return RedirectResponse(url="/profil?updated=1", status_code=status.HTTP_302_FOUND)
+
+
+@app.post("/profil/passwort", response_class=HTMLResponse)
+def change_password(
+    request: Request,
+    csrf_token: str = Form(...),
+    current_password: str = Form(...),
+    new_password: str = Form(...),
+    confirm_password: str = Form(...),
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    try:
+        validate_csrf(request, csrf_token)
+    except HTTPException:
+        return _render(
+            request,
+            "profile.html",
+            _profile_context(request, current_user, db, pw_error_message="Sitzung abgelaufen. Bitte Seite neu laden und erneut versuchen."),
+        )
+
+    if not verify_password(current_password, current_user.password_hash):
+        return _render(
+            request,
+            "profile.html",
+            _profile_context(request, current_user, db, pw_error_message="Das aktuelle Passwort ist nicht korrekt."),
+        )
+
+    if new_password != confirm_password:
+        return _render(
+            request,
+            "profile.html",
+            _profile_context(request, current_user, db, pw_error_message="Die neuen Passwörter stimmen nicht überein."),
+        )
+
+    try:
+        payload = PasswordChange(new_password=new_password)
+    except ValidationError as exc:
+        return _render(
+            request,
+            "profile.html",
+            _profile_context(request, current_user, db, pw_error_message=_format_validation_error(exc)),
+        )
+
+    current_user.password_hash = hash_password(payload.new_password)
+    invalidate_user_sessions(current_user, db)
+    db.commit()
+    return RedirectResponse(url="/profil?pw=1", status_code=status.HTTP_302_FOUND)
+
+
+@app.post("/admin/users/{user_id}/role", response_class=HTMLResponse)
+def update_user_role(
+    request: Request,
+    user_id: int,
+    csrf_token: str = Form(...),
+    role: str = Form(...),
+    db: Session = Depends(get_db),
+    admin: User = Depends(get_admin_user),
+):
+    validate_csrf(request, csrf_token)
+    target = db.query(User).filter(User.id == user_id).first()
+    if not target:
+        return _render(request, "users.html", _users_context(request, admin, db, error_message="Benutzer nicht gefunden."))
+    if target.id == admin.id:
+        return _render(request, "users.html", _users_context(request, admin, db, error_message="Eigene Rolle kann hier nicht geändert werden."))
+    try:
+        payload = UserRoleUpdate(role=role)
+    except ValidationError as exc:
+        return _render(request, "users.html", _users_context(request, admin, db, error_message=_format_validation_error(exc)))
+    target.role = payload.role
+    target.is_admin = payload.role == "admin"
+    invalidate_user_sessions(target, db)
+    return RedirectResponse(url="/admin/users", status_code=status.HTTP_302_FOUND)
+
+
+@app.post("/admin/users/{user_id}/toggle-active", response_class=HTMLResponse)
+def toggle_user_active(
+    request: Request,
+    user_id: int,
+    csrf_token: str = Form(...),
+    db: Session = Depends(get_db),
+    admin: User = Depends(get_admin_user),
+):
+    validate_csrf(request, csrf_token)
+    target = db.query(User).filter(User.id == user_id).first()
+    if not target:
+        return _render(request, "users.html", _users_context(request, admin, db, error_message="Benutzer nicht gefunden."))
+    if target.id == admin.id:
+        return _render(request, "users.html", _users_context(request, admin, db, error_message="Eigenes Konto kann nicht deaktiviert werden."))
+    target.is_active = not target.is_active
+    invalidate_user_sessions(target, db)
+    return RedirectResponse(url="/admin/users", status_code=status.HTTP_302_FOUND)

app/models/user.py

@@ -13,4 +13,5 @@ class User(Base):
     is_admin = Column(Boolean, default=False, nullable=False)
     role = Column(String(32), default="reader", nullable=False)
     is_active = Column(Boolean, default=True, nullable=False)
+    session_version = Column(Integer, default=0, nullable=False)
     created_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)

app/schemas/user.py

@@ -1,4 +1,6 @@
-from pydantic import BaseModel, EmailStr, Field
+from pydantic import BaseModel, EmailStr, Field, field_validator
+
+from app.core.password_policy import validate_password_strength
 
 
 class UserCreate(BaseModel):
@@ -7,6 +9,31 @@ class UserCreate(BaseModel):
     password: str = Field(min_length=10, max_length=255)
     role: str = Field(default="reader", pattern="^(admin|editor|reader)$")
 
+    @field_validator("password")
+    @classmethod
+    def strong_password(cls, value: str) -> str:
+        validate_password_strength(value)
+        return value
+
+
+class ProfileUpdate(BaseModel):
+    email: EmailStr
+    full_name: str = Field(min_length=2, max_length=255)
+
+
+class PasswordChange(BaseModel):
+    new_password: str = Field(min_length=10, max_length=255)
+
+    @field_validator("new_password")
+    @classmethod
+    def strong_password(cls, value: str) -> str:
+        validate_password_strength(value)
+        return value
+
+
+class UserRoleUpdate(BaseModel):
+    role: str = Field(pattern="^(admin|editor|reader)$")
+
 
 class UserOut(BaseModel):
     id: int

app/services/auth.py

@@ -1,42 +1,45 @@
 from fastapi import Depends, HTTPException, Request, status
-from jose import JWTError, jwt
+from jose import JWTError
 from sqlalchemy.orm import Session
 
-from app.core.config import settings
+from app.core.security import decode_access_token
 from app.db.session import get_db
 from app.models.user import User
 
 
+def _user_from_token(token: str, db: Session) -> User | None:
+    try:
+        payload = decode_access_token(token)
+        user_id = int(payload.get("sub"))
+        token_sv = int(payload.get("sv", 0))
+    except (JWTError, TypeError, ValueError):
+        return None
+
+    user = db.query(User).filter(User.id == user_id, User.is_active.is_(True)).first()
+    if not user or (user.session_version or 0) != token_sv:
+        return None
+    return user
+
+
 def get_optional_user(request: Request, db: Session = Depends(get_db)) -> User | None:
     token = request.cookies.get("access_token")
     if not token:
         return None
-    try:
-        payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
-        user_id = int(payload.get("sub"))
-    except (JWTError, TypeError, ValueError):
-        return None
-    return db.query(User).filter(User.id == user_id, User.is_active.is_(True)).first()
+    return _user_from_token(token, db)
 
 
 def get_current_user(request: Request, db: Session = Depends(get_db)) -> User:
     token = request.cookies.get("access_token")
     if not token:
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Nicht angemeldet.")
-    try:
-        payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
-        user_id = int(payload.get("sub"))
-    except (JWTError, TypeError, ValueError) as exc:
-        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Ungültiger Token.") from exc
-
-    user = db.query(User).filter(User.id == user_id, User.is_active.is_(True)).first()
+    user = _user_from_token(token, db)
     if not user:
-        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Benutzer nicht gefunden.")
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="Ungültiger oder abgelaufener Token.")
     return user
 
 
 def get_admin_user(current_user: User = Depends(get_current_user)) -> User:
-    if current_user.role != "admin" and not current_user.is_admin:
+    if current_user.role != "admin":
         raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Admin-Rechte erforderlich.")
     return current_user
 
@@ -47,7 +50,5 @@ def require_editor_or_admin(current_user: User = Depends(get_current_user)) -> U
     return current_user
 
 
-def require_reader_or_higher(current_user: User = Depends(get_current_user)) -> User:
-    if current_user.role not in {"admin", "editor", "reader"}:
-        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="Admin-Rechte erforderlich.")
-    return current_user
+def can_view_sensitive_logs(user: User) -> bool:
+    return user.role in {"admin", "editor"}

app/services/config_store.py

@@ -1,17 +1,29 @@
 from sqlalchemy.orm import Session
 
+from app.core.secrets_crypto import decrypt_secret, encrypt_secret
 from app.models.system import AppConfig
 
+SECRET_CONFIG_KEYS = frozenset({"smtp.password"})
+
 
 def get_config(db: Session, key: str, default: str = "") -> str:
     row = db.query(AppConfig).filter(AppConfig.key == key).first()
-    return row.value if row else default
+    if not row:
+        return default
+    if key in SECRET_CONFIG_KEYS:
+        return decrypt_secret(row.value)
+    return row.value
 
 
 def set_config(db: Session, key: str, value: str) -> None:
+    stored = encrypt_secret(value) if key in SECRET_CONFIG_KEYS else value
     row = db.query(AppConfig).filter(AppConfig.key == key).first()
     if row:
-        row.value = value
+        row.value = stored
     else:
-        db.add(AppConfig(key=key, value=value))
+        db.add(AppConfig(key=key, value=stored))
     db.commit()
+
+
+def has_secret_config(db: Session, key: str) -> bool:
+    return db.query(AppConfig).filter(AppConfig.key == key).first() is not None

app/services/newsletter.py

@@ -76,11 +76,21 @@ def filter_articles(
     ]
 
 
-def split_articles_by_type(articles: list[dict[str, Any]]) -> tuple[list[dict[str, Any]], list[dict[str, Any]]]:
+def parse_excluded_users(raw: str | None) -> set[str]:
+    if not raw:
+        return set()
+    return {part.strip().lower() for part in raw.split(",") if part.strip()}
+
+
+def split_articles_by_type(
+    articles: list[dict[str, Any]],
+    excluded_edited_users: set[str] | None = None,
+) -> tuple[list[dict[str, Any]], list[dict[str, Any]]]:
     sorted_articles = sorted(articles, key=lambda a: a.get("timestamp", ""), reverse=True)
     new_articles: list[dict[str, Any]] = []
     edited_articles: list[dict[str, Any]] = []
     new_titles: set[str] = set()
+    excluded_edited_users = excluded_edited_users or set()
 
     for item in sorted_articles:
         title = item.get("title", "")
@@ -93,20 +103,20 @@ def split_articles_by_type(articles: list[dict[str, Any]]) -> tuple[list[dict[st
     seen_edited: set[str] = set()
     for item in sorted_articles:
         title = item.get("title", "")
+        editor = str(item.get("user", "")).strip().lower()
         if not title or title in new_titles or title in seen_edited:
             continue
+        if editor in excluded_edited_users:
+            continue
         edited_articles.append(item)
         seen_edited.add(title)
 
     return new_articles, edited_articles
 
 
-def create_subject(days: int, category: str = "", period_label: str | None = None) -> str:
-    label = period_label or f"{days} Tage"
-    base = f"Interner Wiki-Newsletter – {ORG_NAME} ({label})"
-    if category.strip():
-        return f"{base} | Kategorie: {category.strip()}"
-    return base
+def create_subject(month_label: str | None = None, days: int = 30) -> str:
+    label = month_label or f"{days} Tage"
+    return f"Neue Wiki-Artikel Veröffentlichungen vom {label} | Wiki-Redaktion"
 
 
 _MONTHS_DE = [
@@ -138,6 +148,7 @@ def resolve_period(mode: str, days: int) -> dict[str, Any]:
             "start_str": start.strftime("%d.%m.%Y"),
             "end_str": end.strftime("%d.%m.%Y"),
             "label": _month_label(start),
+            "month_label": _month_label(start),
             "days": max(1, (end - start).days),
         }
     days = max(1, min(days, 90))
@@ -150,6 +161,7 @@ def resolve_period(mode: str, days: int) -> dict[str, Any]:
         "start_str": start.strftime("%d.%m.%Y"),
         "end_str": end.strftime("%d.%m.%Y"),
         "label": f"{days} Tage",
+        "month_label": _month_label(end),
         "days": days,
     }
 
@@ -204,9 +216,11 @@ def create_plain_text(
     period_label: str | None = None,
     period: tuple[str, str] | None = None,
     article_type: str = "all",
+    contact_email: str = "",
+    excluded_edited_users: set[str] | None = None,
 ) -> str:
     display = display or DEFAULT_DISPLAY
-    new_articles, edited_articles = split_articles_by_type(articles)
+    new_articles, edited_articles = split_articles_by_type(articles, excluded_edited_users=excluded_edited_users)
     show_new = article_type in ("all", "new")
     show_edited = article_type in ("all", "edited")
     period_start, period_end = period if period else _period_range(days)
@@ -231,6 +245,7 @@ def create_plain_text(
             "",
         ]
     )
+    lines.extend(_plain_contact_line(contact_email))
 
     highlight_articles = _match_highlights(new_articles + edited_articles, highlights)
     if highlight_articles:
@@ -272,6 +287,15 @@ def create_plain_text(
     return "\n".join(lines).strip()
 
 
+def _plain_contact_line(contact_email: str) -> list[str]:
+    if contact_email.strip():
+        return [
+            f"Fragen oder ein Themenwunsch? Meldet euch gern beim Wiki-Team ({contact_email.strip()}).",
+            "",
+        ]
+    return ["Fragen oder ein Themenwunsch? Meldet euch gern beim Wiki-Team.", ""]
+
+
 def _plain_editor_tip(editor_tip: str) -> list[str]:
     text = (editor_tip or "").strip()
     if not text:
@@ -296,14 +320,17 @@ def create_html(
     period_label: str | None = None,
     period: tuple[str, str] | None = None,
     article_type: str = "all",
+    month_label: str | None = None,
+    contact_email: str = "",
+    excluded_edited_users: set[str] | None = None,
 ) -> str:
     display = display or DEFAULT_DISPLAY
-    new_articles, edited_articles = split_articles_by_type(articles)
+    new_articles, edited_articles = split_articles_by_type(articles, excluded_edited_users=excluded_edited_users)
     show_new = article_type in ("all", "new")
     show_edited = article_type in ("all", "edited")
     period_start, period_end = period if period else _period_range(days)
     total = len(new_articles) + len(edited_articles)
-    subject = escape(create_subject(days, category, period_label))
+    subject = escape(create_subject(month_label or period_label, days))
     preheader = escape(_summary_sentence(total))
     period_label = escape(f"{period_start} – {period_end}")
     summary_text = escape(_summary_sentence(total))
@@ -334,6 +361,21 @@ def create_html(
             f'<strong style="color:{COLOR_HEADING};">Filter:</strong> Kategorie {escape(category.strip())}</p></td></tr>'
         )
 
+    if contact_email.strip():
+        ce = escape(contact_email.strip())
+        contact_html = (
+            f'Fragen oder ein Themenwunsch? '
+            f'<a href="mailto:{ce}" style="color:{COLOR_TK_ORANGE};text-decoration:underline;">Meldet euch gern beim Wiki-Team</a>.'
+        )
+    else:
+        contact_html = "Fragen oder ein Themenwunsch? Meldet euch gern beim Wiki-Team."
+
+    contact_section = (
+        f'<tr><td style="padding:16px 32px 24px 32px;" class="mobile-padding">'
+        f'<p style="margin:8px 0 0;font-family:{FONT};font-size:15px;line-height:24px;color:{COLOR_TEXT};">{contact_html}</p>'
+        f"</td></tr>"
+    )
+
     return f"""<!DOCTYPE html>
 <html lang="de" xmlns="http://www.w3.org/1999/xhtml" xmlns:o="urn:schemas-microsoft-com:office:office">
 <head>
@@ -396,6 +438,7 @@ def create_html(
                 </table>
               </td>
             </tr>
+            {contact_section}
             {category_hint}
             {highlights_section}
             {body}
@@ -411,7 +454,6 @@ def create_html(
                 <table role="presentation" width="100%" cellpadding="0" cellspacing="0" border="0">
                   <tr>
                     <td style="font-family:{FONT};font-size:15px;line-height:24px;color:{COLOR_TEXT};">
-                      Fragen oder ein Themenwunsch? Meldet euch gern beim Wiki-Team.<br><br>
                       Viele Grüße<br>
                       Euer Thomas-Krenn-Wiki Team
                     </td>
@@ -425,7 +467,7 @@ def create_html(
                   Thomas-Krenn.AG | Speltenbach-Steinäcker 1 | D-94078 Freyung<br>
                   Tel.: +49 8551 9150 0 | Fax: +49 8551 9150 55 |
                   <a href="{WIKI_HOME_URL}" target="_blank" style="color:{COLOR_TK_ORANGE};text-decoration:underline;">thomas-krenn.com</a><br>
-                  <span style="color:#AEB2B7;">Automatisch erstellter interner Newsletter &middot; Nur für den internen Gebrauch</span>
+                  <span style="color:#AEB2B7;">Automatisch erstellter interner Newsletter &middot; Nur für den internen Gebrauch &middot; Made with ❤️ by Samuel</span>
                 </div>
               </td>
             </tr>
@@ -678,15 +720,18 @@ def create_outlook_html(
     period_label: str | None = None,
     period: tuple[str, str] | None = None,
     article_type: str = "all",
+    month_label: str | None = None,
+    contact_email: str = "",
+    excluded_edited_users: set[str] | None = None,
 ) -> str:
     """Word/Outlook-kompatibles HTML mit font-Tags und bgcolor (überlebt Einfügen in Outlook)."""
     display = display or DEFAULT_DISPLAY
-    new_articles, edited_articles = split_articles_by_type(articles)
+    new_articles, edited_articles = split_articles_by_type(articles, excluded_edited_users=excluded_edited_users)
     show_new = article_type in ("all", "new")
     show_edited = article_type in ("all", "edited")
     period_start, period_end = period if period else _period_range(days)
     total = len(new_articles) + len(edited_articles)
-    subject = escape(create_subject(days, category, period_label))
+    subject = escape(create_subject(month_label or period_label, days))
     period_label = f"{period_start} – {period_end}"
     summary_text = _summary_sentence(total)
 
@@ -725,6 +770,21 @@ def create_outlook_html(
 
     editor_tip_row = _outlook_editor_tip(editor_tip)
 
+    if contact_email.strip():
+        contact_block = (
+            f'<p style="margin:12px 0 20px;">'
+            f'{_outlook_font("Fragen oder ein Themenwunsch? ", size="1")}'
+            f'{_outlook_link("Meldet euch gern beim Wiki-Team", f"mailto:{contact_email.strip()}", color=OUTLOOK_ORANGE, bold=False, size="1")}'
+            f'{_outlook_font(".", size="1")}'
+            f"</p>"
+        )
+    else:
+        contact_block = (
+            f'<p style="margin:12px 0 20px;">'
+            f'{_outlook_font("Fragen oder ein Themenwunsch? Meldet euch gern beim Wiki-Team.", size="1")}'
+            f"</p>"
+        )
+
     return f"""<!DOCTYPE html>
 <html lang="de" xmlns="http://www.w3.org/1999/xhtml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word">
 <head>
@@ -773,6 +833,7 @@ def create_outlook_html(
       <td {_outlook_td_attrs(extra_style="padding:20px;")}>
         <p style="margin:0 0 8px;">{_outlook_font("Servus,")}</p>
         <p style="margin:0 0 16px;">{_outlook_font(f"hier ist deine Übersicht mit den neuesten Beiträgen aus dem Thomas-Krenn-Wiki vom {period_start} bis {period_end}.")}</p>
+        {contact_block}
         {category_block}
         {highlights_rows}
         <table width="100%" cellpadding="0" cellspacing="0" border="0" bgcolor="{OUTLOOK_WHITE}" style="background-color:{OUTLOOK_WHITE} !important;" data-ogsb="{OUTLOOK_WHITE}">
@@ -780,13 +841,13 @@ def create_outlook_html(
           {summary_row}
           {editor_tip_row}
           <tr>
-            <td {_outlook_td_attrs(extra_style="padding:20px 0 0;")}>
+            <td {_outlook_td_attrs(extra_style="padding:20px 0 24px;")}>
               {_outlook_cta(WIKI_HOME_URL, "Zum Thomas-Krenn-Wiki →")}
             </td>
           </tr>
           <tr>
-            <td {_outlook_td_attrs(extra_style=f"padding:16px 0 0;border-top:1px solid {OUTLOOK_BORDER};")}>
-              {_outlook_font(f"Automatisch erstellter interner Newsletter · Nur für den Gebrauch bei {ORG_NAME}", color=OUTLOOK_MUTED, size="1")}
+            <td {_outlook_td_attrs(extra_style=f"padding:20px 0 0;border-top:1px solid {OUTLOOK_BORDER};")}>
+              {_outlook_font(f"Automatisch erstellter interner Newsletter · Nur für den Gebrauch bei {ORG_NAME} · Made with ❤️ by Samuel", color=OUTLOOK_MUTED, size="1")}
             </td>
           </tr>
         </table>
@@ -931,7 +992,10 @@ def _plain_item(idx: int, item: dict[str, Any], display: DisplayOptions) -> list
     return lines
 
 
-def _plain_footer(new_articles: list[dict[str, Any]], edited_articles: list[dict[str, Any]]) -> str:
+def _plain_footer(
+    new_articles: list[dict[str, Any]],
+    edited_articles: list[dict[str, Any]],
+) -> str:
     total = len(new_articles) + len(edited_articles)
     return "\n".join(
         [

app/services/session_tokens.py

@@ -0,0 +1,8 @@
+from sqlalchemy.orm import Session
+
+from app.models.user import User
+
+
+def invalidate_user_sessions(user: User, db: Session) -> None:
+    user.session_version = (user.session_version or 0) + 1
+    db.commit()

app/services/smtp_sender.py

@@ -1,14 +1,20 @@
+import logging
 import smtplib
 from datetime import datetime
 from email.mime.multipart import MIMEMultipart
 from email.mime.text import MIMEText
+from email.utils import formataddr
 from typing import Sequence
 
 from sqlalchemy.orm import Session
 
+from app.core.config import settings
+from app.core.email_utils import parse_recipient_list
 from app.models.system import SendLog
 from app.services.config_store import get_config
 
+logger = logging.getLogger("newsletter.smtp")
+
 
 def get_smtp_settings(db: Session) -> dict[str, str]:
     return {
@@ -18,13 +24,61 @@ def get_smtp_settings(db: Session) -> dict[str, str]:
         "username": get_config(db, "smtp.username", ""),
         "password": get_config(db, "smtp.password", ""),
         "from_email": get_config(db, "smtp.from_email", ""),
+        "from_name": get_config(db, "smtp.from_name", ""),
+        "reply_to": get_config(db, "smtp.reply_to", ""),
         "use_tls": get_config(db, "smtp.use_tls", "true"),
         "recipients": get_config(db, "smtp.recipients", ""),
+        # Zeitplan
+        "schedule_enabled": get_config(db, "smtp.schedule_enabled", "false"),
+        "schedule_acknowledged": get_config(db, "smtp.schedule_acknowledged", "false"),
+        "schedule_frequency": get_config(db, "smtp.schedule_frequency", "monthly"),
         "schedule_time": get_config(db, "smtp.schedule_time", "08:00"),
+        "schedule_weekdays": get_config(db, "smtp.schedule_weekdays", "0"),
+        "schedule_dom": get_config(db, "smtp.schedule_dom", "1"),
         "last_scheduled_date": get_config(db, "smtp.last_scheduled_date", ""),
+        # Generierungs-Vorgaben für den geplanten Versand
+        "gen_period": get_config(db, "smtp.gen_period", "last_month"),
+        "gen_days": get_config(db, "smtp.gen_days", "30"),
+        "gen_article_type": get_config(db, "smtp.gen_article_type", "new"),
+        "gen_category": get_config(db, "smtp.gen_category", ""),
+        "gen_excluded_users": get_config(db, "smtp.gen_excluded_users", settings.default_excluded_users),
     }
 
 
+def schedule_is_due(settings: dict[str, str], now: datetime) -> bool:
+    """Prüft, ob laut Zeitplan jetzt ein Versand fällig ist (mit Tages-Dedupe)."""
+    if settings["enabled"].lower() != "true":
+        return False
+    if (settings.get("schedule_enabled") or "false").lower() != "true":
+        return False
+    if (settings.get("schedule_acknowledged") or "false").lower() != "true":
+        return False
+    freq = (settings.get("schedule_frequency") or "off").lower()
+    if freq == "off":
+        return False
+
+    schedule_time = settings.get("schedule_time") or "08:00"
+    if now.strftime("%H:%M") < schedule_time:
+        return False
+
+    today = now.strftime("%Y-%m-%d")
+    if settings.get("last_scheduled_date") == today:
+        return False
+
+    if freq == "daily":
+        return True
+    if freq == "weekly":
+        weekdays = {d.strip() for d in (settings.get("schedule_weekdays") or "").split(",") if d.strip() != ""}
+        return str(now.weekday()) in weekdays
+    if freq == "monthly":
+        try:
+            dom = int(settings.get("schedule_dom") or "1")
+        except ValueError:
+            dom = 1
+        return now.day == max(1, min(dom, 28))
+    return False
+
+
 def send_newsletter(
     db: Session,
     subject: str,
@@ -43,12 +97,25 @@ def send_newsletter(
         _log(db, subject, recipients, "failed", detail, scheduled)
         return "failed", detail
 
+    try:
+        validated_recipients = parse_recipient_list(",".join(recipients))
+    except ValueError as exc:
+        detail = f"Ungültige Empfängerliste: {exc}"
+        _log(db, subject, recipients, "failed", detail, scheduled)
+        return "failed", detail
+
     msg = MIMEMultipart("alternative")
     msg.attach(MIMEText(text_content, "plain", "utf-8"))
     msg.attach(MIMEText(html_content, "html", "utf-8"))
     msg["Subject"] = subject
-    msg["From"] = settings["from_email"]
-    msg["To"] = ", ".join(recipients)
+    if settings.get("from_name"):
+        msg["From"] = formataddr((settings["from_name"], settings["from_email"]))
+    else:
+        msg["From"] = settings["from_email"]
+    msg["To"] = settings["from_email"]
+    msg["Bcc"] = ", ".join(validated_recipients)
+    if settings.get("reply_to"):
+        msg["Reply-To"] = settings["reply_to"]
 
     try:
         port = int(settings["port"])
@@ -57,32 +124,21 @@ def send_newsletter(
                 server.starttls()
             if settings["username"]:
                 server.login(settings["username"], settings["password"])
-            server.sendmail(settings["from_email"], list(recipients), msg.as_string())
-        detail = f"Versand erfolgreich an {len(recipients)} Empfänger."
-        _log(db, subject, recipients, "sent", detail, scheduled)
+            server.sendmail(settings["from_email"], validated_recipients, msg.as_string())
+        detail = f"Versand erfolgreich an {len(validated_recipients)} Empfänger."
+        _log(db, subject, validated_recipients, "sent", detail, scheduled)
         return "sent", detail
     except Exception as exc:
-        detail = f"Versandfehler: {exc}"
-        _log(db, subject, recipients, "failed", detail, scheduled)
+        logger.exception("SMTP-Versand fehlgeschlagen")
+        detail = "Versandfehler: E-Mail konnte nicht zugestellt werden. Details stehen im Server-Log."
+        _log(db, subject, validated_recipients, "failed", detail, scheduled)
         return "failed", detail
 
 
-def run_scheduled_send_if_due(db: Session, subject: str, html_content: str, text_content: str) -> None:
-    settings = get_smtp_settings(db)
-    if settings["enabled"].lower() != "true":
-        return
-    now = datetime.now()
-    schedule_time = settings["schedule_time"] or "08:00"
-    if now.strftime("%H:%M") < schedule_time:
-        return
-    today = now.strftime("%Y-%m-%d")
-    if settings["last_scheduled_date"] == today:
-        return
-    recipients = [r.strip() for r in settings["recipients"].split(",") if r.strip()]
-    send_newsletter(db, subject, html_content, text_content, recipients, scheduled=True)
+def mark_scheduled_sent(db: Session, now: datetime) -> None:
     from app.services.config_store import set_config
 
-    set_config(db, "smtp.last_scheduled_date", today)
+    set_config(db, "smtp.last_scheduled_date", now.strftime("%Y-%m-%d"))
 
 
 def _log(db: Session, subject: str, recipients: Sequence[str], status: str, detail: str, scheduled: bool) -> None:

app/static/css/main.css

@@ -115,6 +115,15 @@ a:hover { color: var(--tk-orange-dark); text-decoration: underline; }
     color: #CCCCCC;
 }
 
+a.user-chip-link {
+    text-decoration: none;
+    cursor: pointer;
+}
+
+a.user-chip-link:hover {
+    color: #FFFFFF;
+}
+
 .topbar .btn-logout {
     background: transparent;
     border: 1px solid rgba(255, 255, 255, 0.35);
@@ -698,6 +707,54 @@ body.login-page .container {
     flex-wrap: wrap;
 }
 
+/* ── Zeitplan ── */
+.schedule-box {
+    border: 1px solid var(--tk-border);
+    border-radius: 8px;
+    padding: 0.85rem 1rem 1rem;
+    margin: 0.25rem 0;
+}
+
+.schedule-box legend {
+    font-weight: 600;
+    padding: 0 0.4rem;
+    color: var(--tk-orange-dark, #c15200);
+}
+
+.weekday-row {
+    display: flex;
+    gap: 0.4rem;
+    flex-wrap: wrap;
+    margin: 0.25rem 0 0.75rem;
+}
+
+.weekday-chip {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.3rem;
+    border: 1px solid var(--tk-border);
+    border-radius: 6px;
+    padding: 0.3rem 0.55rem;
+    font-size: 0.85rem;
+    cursor: pointer;
+    user-select: none;
+}
+
+.inline-form {
+    display: inline;
+    margin: 0;
+}
+
+.inline-form select,
+.inline-form button {
+    font-size: 0.85rem;
+}
+
+.btn-small {
+    padding: 0.35rem 0.65rem;
+    font-size: 0.82rem;
+}
+
 /* ── Footer ── */
 .site-footer {
     text-align: center;

app/templates/base.html

@@ -4,7 +4,7 @@
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <title>{% block title %}{{ title if title else "Wiki Newsletter Admin" }}{% endblock %} · Thomas-Krenn.AG</title>
-    <link rel="stylesheet" href="/static/css/main.css?v=4">
+    <link rel="stylesheet" href="/static/css/main.css?v=6">
 </head>
 <body class="{% block body_class %}{% endblock %}">
 <header class="topbar">
@@ -22,11 +22,12 @@
             {% if user.role == "admin" %}
             <a href="/admin/users" class="{% if active_nav == 'users' %}active{% endif %}">Benutzer</a>
             {% endif %}
+            <a href="/profil" class="{% if active_nav == 'profile' %}active{% endif %}">Profil</a>
         </nav>
-        <div class="user-chip">
+        <a href="/profil" class="user-chip user-chip-link">
             <span>{{ user.full_name }}</span>
             <span class="badge badge-{{ user.role }}">{{ user.role }}</span>
-        </div>
+        </a>
         <form method="post" action="/logout">
             <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
             <button type="submit" class="btn-logout">Abmelden</button>

app/templates/dashboard.html

@@ -49,7 +49,11 @@
                     <label>Kategorie (optional)
                         <input type="text" name="category" value="{{ filters.category }}" placeholder="z. B. Linux">
                     </label>
+                    <label>Bearbeiter ausschließen (optional)
+                        <input type="text" name="excluded_users" value="{{ filters.excluded_users }}" placeholder="z. B. Aranzinger, Testuser">
+                    </label>
                 </div>
+                <p class="hint">Nur bei „Bearbeitete Artikel“ relevant: Benutzer in dieser Liste werden aus den bearbeiteten Artikeln entfernt.</p>
                 <label>Artikel-Auswahl
                     <select name="article_type">
                         <option value="all" {% if filters.article_type == 'all' %}selected{% endif %}>Alle (neue &amp; bearbeitete)</option>
@@ -73,11 +77,11 @@
                     </label>
                 </fieldset>
                 <label>Top-Highlights (optional)
-                    <textarea name="highlights" rows="3" placeholder="Ein Artikeltitel pro Zeile – muss exakt einem gefundenen Artikel entsprechen (max. 3)">{{ filters.highlights }}</textarea>
+                    <textarea name="highlights" rows="3" maxlength="{{ highlights_max_length }}" placeholder="Ein Artikeltitel pro Zeile – muss exakt einem gefundenen Artikel entsprechen (max. 3)">{{ filters.highlights }}</textarea>
                 </label>
                 <p class="hint">Hervorgehobene Artikel erscheinen als „Top Highlights“-Box oben im Newsletter.</p>
                 <label>Redaktionsnotiz (optional)
-                    <textarea name="editor_tip" rows="3" placeholder="Optionaler Hinweis der Redaktion für diese Ausgabe…">{{ filters.editor_tip }}</textarea>
+                    <textarea name="editor_tip" rows="3" maxlength="{{ editor_tip_max_length }}" placeholder="Optionaler Hinweis der Redaktion für diese Ausgabe…">{{ filters.editor_tip }}</textarea>
                 </label>
                 <p class="hint">Wird nur angezeigt, wenn Text hinterlegt ist – erscheint als eigene Box im Newsletter.</p>
                 {% if wiki_error %}
@@ -122,7 +126,11 @@
                 <p class="hint" style="margin:0 0 0.75rem;">Bitte oben die Vorschau prüfen. Beim Versenden wird genau dieser Newsletter (aktuelle Filter) an die Verteilerliste geschickt.</p>
                 <p class="hint" style="margin:0 0 0.75rem;">
                     <strong>Betreff:</strong> {{ subject }}<br>
+                    {% if can_view_sensitive %}
                     <strong>Empfänger:</strong> {{ smtp.recipients if smtp.recipients else "— keine konfiguriert —" }}
+                    {% else %}
+                    <strong>Empfänger:</strong> Nur für Editor/Admin sichtbar
+                    {% endif %}
                     {% if smtp.enabled != "true" %}<br><strong style="color:var(--tk-orange-dark);">SMTP ist deaktiviert</strong> – bitte zuerst in „SMTP-Konfiguration“ aktivieren.{% endif %}
                 </p>
                 {% if user.role in ["admin", "editor"] %}
@@ -131,6 +139,7 @@
                     <input type="hidden" name="period" value="{{ filters.period }}">
                     <input type="hidden" name="days" value="{{ filters.days }}">
                     <input type="hidden" name="category" value="{{ filters.category }}">
+                    <input type="hidden" name="excluded_users" value="{{ filters.excluded_users }}">
                     <input type="hidden" name="article_type" value="{{ filters.article_type }}">
                     <input type="hidden" name="show_date" value="{{ 'true' if filters.display.show_date else 'false' }}">
                     <input type="hidden" name="show_user" value="{{ 'true' if filters.display.show_user else 'false' }}">
@@ -250,12 +259,20 @@
                             <input type="text" name="username" value="{{ smtp.username }}">
                         </label>
                         <label>Passwort
-                            <input type="password" name="password" value="{{ smtp.password }}">
+                            <input type="password" name="password" autocomplete="new-password" placeholder="{% if smtp.password_configured == 'true' %}•••••••• (unverändert lassen){% else %}SMTP-Passwort{% endif %}">
                         </label>
                     </div>
-                    <label>Absender E-Mail
-                        <input type="email" name="from_email" value="{{ smtp.from_email }}">
+                    <label>Absender-Name
+                        <input type="text" name="from_name" value="{{ smtp.from_name }}" placeholder="Thomas-Krenn Wiki-Team">
                     </label>
+                    <div class="form-row">
+                        <label>Absender E-Mail
+                            <input type="email" name="from_email" value="{{ smtp.from_email }}">
+                        </label>
+                        <label>Antwort-Adresse (Reply-To)
+                            <input type="email" name="reply_to" value="{{ smtp.reply_to }}" placeholder="wiki-team@firma.de">
+                        </label>
+                    </div>
                     <label class="checkbox">
                         <input type="checkbox" name="use_tls" value="true" {% if smtp.use_tls == "true" %}checked{% endif %}>
                         STARTTLS verwenden
@@ -263,15 +280,83 @@
                     <label>Verteilerliste (kommagetrennt)
                         <textarea rows="3" name="recipients" placeholder="kollege@firma.de, team@firma.de">{{ smtp.recipients }}</textarea>
                     </label>
-                    <label>Geplanter täglicher Versand (HH:MM)
-                        <input type="time" name="schedule_time" value="{{ smtp.schedule_time }}">
-                    </label>
+
+                    <fieldset class="schedule-box">
+                        <legend>Geplanter Versand</legend>
+                        <label class="checkbox">
+                            <input type="checkbox" name="schedule_enabled" value="true" {% if smtp.schedule_enabled == "true" %}checked{% endif %}>
+                            Automatischen Versand aktivieren
+                        </label>
+                        <label class="checkbox">
+                            <input type="checkbox" name="schedule_acknowledged" value="true" {% if smtp.schedule_acknowledged == "true" %}checked{% endif %}>
+                            Ich bestätige den automatischen Versand ohne manuelle Freigabe (ohne Redaktionsnotiz/Highlights)
+                        </label>
+                        <p class="hint" style="margin:0 0 0.6rem;">Beide Häkchen sind nötig, damit der Zeitplan greift. Für manuelle Kontrolle nur den ersten Schalter nutzen und „Newsletter jetzt senden“ verwenden.</p>
+                        <div class="form-row">
+                            <label>Häufigkeit
+                                <select name="schedule_frequency">
+                                    <option value="daily" {% if smtp.schedule_frequency == 'daily' %}selected{% endif %}>Täglich</option>
+                                    <option value="weekly" {% if smtp.schedule_frequency == 'weekly' %}selected{% endif %}>Wöchentlich</option>
+                                    <option value="monthly" {% if smtp.schedule_frequency == 'monthly' %}selected{% endif %}>Monatlich</option>
+                                </select>
+                            </label>
+                            <label>Uhrzeit (HH:MM)
+                                <input type="time" name="schedule_time" value="{{ smtp.schedule_time }}">
+                            </label>
+                        </div>
+
+                        {% set active_days = smtp.schedule_weekdays.split(',') %}
+                        <label>Wochentage (nur bei „Wöchentlich“)</label>
+                        <div class="weekday-row">
+                            {% for value, label in [('0','Mo'), ('1','Di'), ('2','Mi'), ('3','Do'), ('4','Fr'), ('5','Sa'), ('6','So')] %}
+                            <label class="weekday-chip">
+                                <input type="checkbox" name="schedule_weekdays" value="{{ value }}" {% if value in active_days %}checked{% endif %}>
+                                {{ label }}
+                            </label>
+                            {% endfor %}
+                        </div>
+
+                        <label>Tag im Monat (nur bei „Monatlich“, 1–28)
+                            <input type="number" name="schedule_dom" min="1" max="28" value="{{ smtp.schedule_dom }}">
+                        </label>
+
+                        <p class="hint" style="margin:0.5rem 0 0.25rem;">Inhalt des geplanten Newsletters:</p>
+                        <div class="form-row">
+                            <label>Zeitraum
+                                <select name="gen_period">
+                                    <option value="days" {% if smtp.gen_period != 'last_month' %}selected{% endif %}>Letzte X Tage</option>
+                                    <option value="last_month" {% if smtp.gen_period == 'last_month' %}selected{% endif %}>Letzter Monat</option>
+                                </select>
+                            </label>
+                            <label>Tage (bei „Letzte X Tage“)
+                                <input type="number" name="gen_days" min="1" max="90" value="{{ smtp.gen_days }}">
+                            </label>
+                        </div>
+                        <div class="form-row">
+                            <label>Artikel-Auswahl
+                                <select name="gen_article_type">
+                                    <option value="all" {% if smtp.gen_article_type == 'all' %}selected{% endif %}>Alle</option>
+                                    <option value="new" {% if smtp.gen_article_type == 'new' %}selected{% endif %}>Nur neue</option>
+                                    <option value="edited" {% if smtp.gen_article_type == 'edited' %}selected{% endif %}>Nur bearbeitete</option>
+                                </select>
+                            </label>
+                            <label>Kategorie (optional)
+                                <input type="text" name="gen_category" value="{{ smtp.gen_category }}">
+                            </label>
+                        </div>
+                        <label>Bearbeiter ausschließen (optional)
+                            <input type="text" name="gen_excluded_users" value="{{ smtp.gen_excluded_users }}" placeholder="z. B. Aranzinger, Testuser">
+                        </label>
+                        <p class="hint" style="margin-top:-0.2rem;">Diese Benutzer werden bei „Bearbeitete Artikel“ ignoriert (gilt für den geplanten Versand).</p>
+                    </fieldset>
+
                     <button type="submit">Einstellungen speichern</button>
                 </form>
             </div>
         </details>
         {% endif %}
 
+        {% if can_view_sensitive %}
         <section class="card">
             <div class="card-header">
                 <h3>Versandprotokoll</h3>
@@ -298,6 +383,7 @@
                 </table>
             </div>
         </section>
+        {% endif %}
 
     </div>
 

app/templates/login.html

@@ -11,7 +11,7 @@
     <form method="post" action="/login" class="form-grid">
         <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
         <label>E-Mail
-            <input type="email" name="email" required autocomplete="username" placeholder="name@firma.de">
+            <input type="email" name="email" required autocomplete="username">
         </label>
         <label>Passwort
             <input type="password" name="password" required autocomplete="current-password">

app/templates/profile.html

@@ -0,0 +1,74 @@
+{% extends "base.html" %}
+{% block title %}Mein Profil{% endblock %}
+{% block content %}
+
+<div class="page-header">
+    <h2>Mein Profil</h2>
+    <p class="page-lead"><a href="/dashboard">← Zurück zum Dashboard</a></p>
+</div>
+
+{% if success_message %}
+<p class="hint" style="color:var(--tk-success);font-weight:600;">{{ success_message }}</p>
+{% endif %}
+
+<div class="layout-2col">
+    <div class="main-col">
+        <section class="card card-accent-orange">
+            <div class="card-header">
+                <h3>Profil bearbeiten</h3>
+            </div>
+            {% if error_message %}
+            <p class="error">{{ error_message }}</p>
+            {% endif %}
+            <form method="post" action="/profil" class="form-grid">
+                <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
+                <div class="form-row">
+                    <label>Vollständiger Name
+                        <input type="text" name="full_name" required minlength="2" value="{{ user.full_name }}">
+                    </label>
+                    <label>E-Mail
+                        <input type="email" name="email" required value="{{ user.email }}">
+                    </label>
+                </div>
+                <button type="submit" class="btn-primary">Profil speichern</button>
+            </form>
+        </section>
+
+        <section class="card">
+            <div class="card-header">
+                <h3>Passwort ändern</h3>
+            </div>
+            {% if pw_error_message %}
+            <p class="error">{{ pw_error_message }}</p>
+            {% endif %}
+            <form method="post" action="/profil/passwort" class="form-grid">
+                <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
+                <label>Aktuelles Passwort
+                    <input type="password" name="current_password" required autocomplete="current-password">
+                </label>
+                <div class="form-row">
+                    <label>Neues Passwort
+                        <input type="password" name="new_password" required minlength="10" autocomplete="new-password" placeholder="Mind. 10 Zeichen, Groß/Klein/Ziffer">
+                    </label>
+                    <label>Neues Passwort bestätigen
+                        <input type="password" name="confirm_password" required minlength="10" autocomplete="new-password">
+                    </label>
+                </div>
+                <button type="submit" class="btn-primary">Passwort ändern</button>
+            </form>
+        </section>
+    </div>
+
+    <aside class="sidebar-col">
+        <div class="sidebar-card">
+            <h4>Konto</h4>
+            <ul>
+                <li><strong>Rolle:</strong> {{ user.role }}</li>
+                <li><strong>Status:</strong> {{ "Aktiv" if user.is_active else "Inaktiv" }}</li>
+            </ul>
+            <p class="hint">Die Rolle kann nur ein Administrator ändern.</p>
+        </div>
+    </aside>
+</div>
+
+{% endblock %}

app/templates/users.html

@@ -31,7 +31,7 @@
                 </div>
                 <div class="form-row">
                     <label>Passwort
-                        <input type="password" name="password" required minlength="10" placeholder="Mindestens 10 Zeichen">
+                        <input type="password" name="password" required minlength="10" placeholder="Mind. 10 Zeichen, Groß/Klein/Ziffer">
                     </label>
                     <label>Rolle
                         <select name="role">
@@ -52,15 +52,40 @@
             <div class="table-wrap">
                 <table>
                     <thead>
-                        <tr><th>E-Mail</th><th>Name</th><th>Rolle</th><th>Status</th></tr>
+                        <tr><th>E-Mail</th><th>Name</th><th>Rolle</th><th>Status</th><th>Aktionen</th></tr>
                     </thead>
                     <tbody>
                     {% for u in users %}
                         <tr>
                             <td>{{ u.email }}</td>
                             <td>{{ u.full_name }}</td>
-                            <td><span class="badge badge-{{ u.role }}">{{ u.role }}</span></td>
+                            <td>
+                                {% if u.id == user.id %}
+                                <span class="badge badge-{{ u.role }}">{{ u.role }}</span>
+                                {% else %}
+                                <form method="post" action="/admin/users/{{ u.id }}/role" class="inline-form">
+                                    <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
+                                    <select name="role" onchange="this.form.submit()">
+                                        <option value="reader" {% if u.role == 'reader' %}selected{% endif %}>reader</option>
+                                        <option value="editor" {% if u.role == 'editor' %}selected{% endif %}>editor</option>
+                                        <option value="admin" {% if u.role == 'admin' %}selected{% endif %}>admin</option>
+                                    </select>
+                                </form>
+                                {% endif %}
+                            </td>
                             <td>{{ "Aktiv" if u.is_active else "Inaktiv" }}</td>
+                            <td>
+                                {% if u.id != user.id %}
+                                <form method="post" action="/admin/users/{{ u.id }}/toggle-active" class="inline-form">
+                                    <input type="hidden" name="csrf_token" value="{{ csrf_token }}">
+                                    <button type="submit" class="btn-secondary btn-small">
+                                        {% if u.is_active %}Deaktivieren{% else %}Aktivieren{% endif %}
+                                    </button>
+                                </form>
+                                {% else %}
+                                <span class="hint">Eigenes Konto</span>
+                                {% endif %}
+                            </td>
                         </tr>
                     {% endfor %}
                     </tbody>
@@ -78,6 +103,12 @@
                 <li><strong>Admin</strong> – Benutzer &amp; SMTP</li>
             </ul>
         </div>
+        <div class="sidebar-card">
+            <h4>Sicherheit</h4>
+            <ul>
+                <li>Rollen- oder Statusänderung beendet alle aktiven Sitzungen des Benutzers.</li>
+            </ul>
+        </div>
     </aside>
 </div>
 

docker-compose.yml

@@ -9,6 +9,11 @@ services:
     volumes:
       - newsletter_data:/app/data
     restart: unless-stopped
+    security_opt:
+      - no-new-privileges:true
+    read_only: true
+    tmpfs:
+      - /tmp
     healthcheck:
       test: ["CMD-SHELL", "python -c \"import urllib.request; urllib.request.urlopen('http://localhost:8000/login').read()\""]
       interval: 30s

requirements.txt

@@ -1,12 +1,13 @@
-fastapi
-uvicorn[standard]
-jinja2
-sqlalchemy
-alembic
-python-multipart
-httpx
-bcrypt
-python-jose[cryptography]
-pydantic-settings
-email-validator
-psycopg[binary]
+fastapi==0.115.6
+uvicorn[standard]==0.32.1
+jinja2==3.1.6
+sqlalchemy==2.0.36
+alembic==1.14.0
+python-multipart==0.0.31
+httpx==0.28.1
+bcrypt==4.2.1
+python-jose[cryptography]==3.4.0
+pydantic-settings==2.6.1
+email-validator==2.2.0
+psycopg[binary]==3.2.13
+cryptography==48.0.1