feat: modal detail system, 80+ RSS feeds, service status tool (#56)

- All external links open in iframe modal instead of navigating away
- 9 drawer item types (cyber, health, AI, social, elections, etc.)
  expand into rich detail panel on click
- RSS feeds expanded from ~20 to ~80 across 14 categories with
  source tier reliability scoring
- New intel_service_status tool monitoring AWS/Azure/GCP/CF/GitHub
- Cloud service incidents rendered in dashboard Security section
- Zero target=_blank links remain in dashboard

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/world_intel_mcp/dashboard/app.py

@@ -40,6 +40,7 @@ from world_intel_mcp.sources import (
     shipping,
     social,
     nuclear,
+    service_status,
 )
 from world_intel_mcp.analysis.alerts import fetch_alert_digest, fetch_weekly_trends
 from world_intel_mcp.config.countries import INTEL_HOTSPOTS
@@ -105,6 +106,7 @@ async def _fetch_overview() -> dict:
         "nuclear_monitor": nuclear.fetch_nuclear_monitor(fetcher),
         "alert_digest": fetch_alert_digest(fetcher),
         "weekly_trends": fetch_weekly_trends(fetcher),
+        "service_status": service_status.fetch_service_status(fetcher),
     }
 
     gathered = await asyncio.gather(