feat: show scanned pages in email summary + frontend (expandable list)

Email now lists all scanned URLs with checkmark/cross status.
Frontend shows collapsible "X Seiten gescannt — Details anzeigen".

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend-compliance/compliance/api/agent_scan_routes.py

@@ -59,6 +59,7 @@ class ScanFinding(BaseModel):
 class ScanResponse(BaseModel):
     url: str
     pages_scanned: int
+    pages_list: list[str] = []
     services: list[ServiceInfo]
     findings: list[ScanFinding]
     ai_detected: bool
@@ -111,6 +112,7 @@ async def scan_website_endpoint(req: ScanRequest):
     return ScanResponse(
         url=req.url,
         pages_scanned=len(scan.pages_scanned),
+        pages_list=scan.pages_scanned,
         services=services_info,
         findings=findings,
         ai_detected=len(scan.ai_mentions) > 0,
@@ -274,6 +276,12 @@ def _build_scan_summary(
         f"{mode} — Website-Scan",
         f"URL: {url}",
         f"Seiten gescannt: {len(scan.pages_scanned)}",
+    ]
+    for page in scan.pages_scanned:
+        status = scan.missing_pages.get(page, 200)
+        marker = "✗" if status >= 400 else "✓"
+        parts.append(f"  {marker} {page}" + (f" (HTTP {status})" if status >= 400 else ""))
+    parts.extend([
         "",
         f"Dienstleister-Abgleich (DSE vs. Website):",
         f"  Korrekt dokumentiert: {n_ok}",