fix: side peek des bases repasse en vanilla JS + largeur 1100px standard (v7.49.0)

- Panneau peek: les bindings Alpine (x-data absent du conteneur) rendaient
  loovverture et le redimensionnement inoperants -> cblage direct sur le document.
- Helper unique window.fdWirePeekResize (app.js): pointer capture, 300px-90vw,
  clic=fermer, largeur persiste fd_peek_width partagee entre les 4 peeks.
- database-table-container margin:0 (tableau colle a gauche, marge Library).
- .lib-container remonte dans app.css (trash etait pleine largeur), .db-index 1100px.
- ObsiGate verifie sans code: creation .xlsx OK (openpyxl, #186).

app/routers/api_v2_agent.py

@@ -156,7 +156,10 @@ async def create_agent_v2(request: Request, authorization: str | None = Header(d
     return JSONResponse(content=data, status_code=201)
 
 
-@router.get("/agents/{agent_id}")
+# v7.46.0 : `{agent_id:int}` — sans le contrainte de type, la routeparametrée
+# enregistree AVANT `/agents/conversations` capturait le segment « conversations »
+# et renvoyait 422 (int_parsing) au lieu de la liste des conversations.
+@router.get("/agents/{agent_id:int}")
 def get_agent_v2(agent_id: int, request: Request, authorization: str | None = Header(default=None)):
     _guard(request, authorization)
     with get_conn() as conn:
@@ -166,7 +169,7 @@ def get_agent_v2(agent_id: int, request: Request, authorization: str | None = He
     return row_to_dict(row)
 
 
-@router.put("/agents/{agent_id}")
+@router.put("/agents/{agent_id:int}")
 async def update_agent_v2(agent_id: int, request: Request, authorization: str | None = Header(default=None)):
     user = _guard(request, authorization, write=True)
     body = await _json_body(request)
@@ -194,7 +197,7 @@ async def update_agent_v2(agent_id: int, request: Request, authorization: str |
     return {"id": agent_id, "status": "updated"}
 
 
-@router.delete("/agents/{agent_id}")
+@router.delete("/agents/{agent_id:int}")
 def delete_agent_v2(agent_id: int, request: Request, authorization: str | None = Header(default=None)):
     user = _guard(request, authorization, write=True)
     with get_conn() as conn: