chore: untrack runtime state files

approved-tasks.json, dashboard/status.json, anaf-monitor/monitor.log
are auto-modified by background processes (heartbeat, cron jobs, ANAF
monitor). Untracking them stops the noisy "auto-commit from dashboard"
churn. Files stay on disk; readers (router._load_approved_tasks etc.)
already handle missing files by returning empty defaults.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

dashboard/status.json

@@ -1,19 +0,0 @@
-{
-  "git": {
-    "status": "4 fișiere",
-    "clean": false,
-    "files": 4
-  },
-  "lastReport": {
-    "type": "evening",
-    "summary": "notes.html îmbunătățit (filtre colorate), rețetă salvată",
-    "time": "30 Jan 2026, 22:00"
-  },
-  "anaf": {
-    "ok": true,
-    "status": "OK",
-    "message": "Nicio modificare detectată",
-    "lastCheck": "02 May 2026, 16:00",
-    "changesCount": 0
-  }
-}