Telegram-Kanaele als Quelle: Parser, Pipeline, UI-Checkbox, Validate-Endpoint

- Neuer source_type telegram_channel in models.py (Source + Incident)
- DB-Migration: include_telegram Spalte fuer incidents
- feeds/telegram_parser.py: Telethon-basierter Parser (analog RSS)
- Orchestrator: Telegram-Pipeline parallel zu RSS + WebSearch
- sources.py: POST /api/sources/telegram/validate Endpoint
- incidents.py: include_telegram in Create/Update/Response
- dashboard.html: Telegram-Checkbox + Filter-Option
- app.js: FormData, EditModal, SourceStats, TypeLabels
- config.py: TELEGRAM_API_ID, API_HASH, SESSION_PATH
- requirements.txt: telethon hinzugefuegt

src/models.py

@@ -52,6 +52,7 @@ class IncidentCreate(BaseModel):
     refresh_interval: int = Field(default=15, ge=10, le=10080)
     retention_days: int = Field(default=0, ge=0, le=999)
     international_sources: bool = True
+    include_telegram: bool = False
     visibility: str = Field(default="public", pattern="^(public|private)$")
 
 
@@ -64,6 +65,7 @@ class IncidentUpdate(BaseModel):
     refresh_interval: Optional[int] = Field(default=None, ge=10, le=10080)
     retention_days: Optional[int] = Field(default=None, ge=0, le=999)
     international_sources: Optional[bool] = None
+    include_telegram: Optional[bool] = None
     visibility: Optional[str] = Field(default=None, pattern="^(public|private)$")
 
 
@@ -80,6 +82,7 @@ class IncidentResponse(BaseModel):
     summary: Optional[str]
     sources_json: Optional[str] = None
     international_sources: bool = True
+    include_telegram: bool = False
     created_by: int
     created_by_username: str = ""
     created_at: str
@@ -95,7 +98,7 @@ class SourceCreate(BaseModel):
     name: str = Field(min_length=1, max_length=200)
     url: Optional[str] = None
     domain: Optional[str] = None
-    source_type: str = Field(default="rss_feed", pattern="^(rss_feed|web_source|excluded)$")
+    source_type: str = Field(default="rss_feed", pattern="^(rss_feed|web_source|excluded|telegram_channel)$")
     category: str = Field(default="sonstige", pattern="^(nachrichtenagentur|oeffentlich-rechtlich|qualitaetszeitung|behoerde|fachmedien|think-tank|international|regional|boulevard|sonstige)$")
     status: str = Field(default="active", pattern="^(active|inactive)$")
     notes: Optional[str] = None
@@ -105,7 +108,7 @@ class SourceUpdate(BaseModel):
     name: Optional[str] = Field(default=None, max_length=200)
     url: Optional[str] = None
     domain: Optional[str] = None
-    source_type: Optional[str] = Field(default=None, pattern="^(rss_feed|web_source|excluded)$")
+    source_type: Optional[str] = Field(default=None, pattern="^(rss_feed|web_source|excluded|telegram_channel)$")
     category: Optional[str] = Field(default=None, pattern="^(nachrichtenagentur|oeffentlich-rechtlich|qualitaetszeitung|behoerde|fachmedien|think-tank|international|regional|boulevard|sonstige)$")
     status: Optional[str] = Field(default=None, pattern="^(active|inactive)$")
     notes: Optional[str] = None