feat: Phase 6-8 — PDF export, recurring scans, multi-website compare

Phase 6: PDF export via WeasyPrint — POST /agent/scans/pdf generates
printable compliance report with findings table, service comparison,
risk badge, and legal disclaimer.

Phase 7: Recurring scans — POST /agent/monitored-urls to add URLs,
POST /agent/run-scheduled triggers all enabled scans (cron/ZeroClaw).
In-memory storage with DB upgrade path.

Phase 8: Multi-website compare — POST /agent/compare with 2-5 URLs,
parallel scanning, comparison table (risk, findings, services, compliance
features per site).

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

backend-compliance/compliance/api/agent_history_routes.py

@@ -13,8 +13,11 @@ import uuid
 from datetime import datetime, timezone
 
 from fastapi import APIRouter, Query
+from fastapi.responses import Response
 from pydantic import BaseModel
 
+from compliance.services.agent_pdf_export import generate_scan_pdf
+
 logger = logging.getLogger(__name__)
 
 router = APIRouter(prefix="/compliance/agent", tags=["agent"])
@@ -195,3 +198,23 @@ async def get_scan(scan_id: str):
         return ScanDetail(id=scan_id, url="", scan_type="", analysis_mode="", result={}, created_at="")
     finally:
         await pool.close()
+
+
+@router.post("/scans/pdf")
+async def export_scan_pdf(req: SaveScanRequest):
+    """Generate a PDF report from scan results (no DB required)."""
+    try:
+        pdf_bytes = generate_scan_pdf({
+            "url": req.url,
+            "scan_type": req.scan_type,
+            "analysis_mode": req.analysis_mode,
+            **req.result,
+        })
+        return Response(
+            content=pdf_bytes,
+            media_type="application/pdf",
+            headers={"Content-Disposition": f'attachment; filename="compliance-report-{req.url.split("/")[2][:30]}.pdf"'},
+        )
+    except Exception as e:
+        logger.error("PDF generation failed: %s", e)
+        return {"error": str(e)}