fix(ops): Add network aliases and stabilize DNS for NODA1

- docker-compose.node1.yml: Add network aliases (router, gateway,
  memory-service, qdrant, nats, neo4j) to eliminate manual
  `docker network connect --alias` commands
- docker-compose.node1.yml: ROUTER_URL now uses env variable with
  fallback: ${ROUTER_URL:-http://router:8000}
- docker-compose.node1.yml: Increase router healthcheck start_period
  to 30s and retries to 5
- .gitignore: Add noda1-credentials.local.mdc (local-only SSH creds)
- scripts/node1/verify_agents.sh: Improved output with agent list
- docs: Add NODA1-AGENT-VERIFICATION.md, NODA1-AGENT-ARCHITECTURE.md,
  NODA1-VERIFICATION-REPORT-2026-02-03.md
- config/README.md: How to add new agents
- .cursor/rules/, .cursor/skills/: NODA1 operations skill for Cursor

Root cause fixed: Gateway could not resolve 'router' DNS name when
Router container was named 'dagi-staging-router' without alias.

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitignore

@@ -90,3 +90,4 @@ models/
 *.bundle
 *.dump
 site/
+.cursor/noda1-credentials.local.mdc