YouTube rate limit protection + progressive retry system

- New: tools/yt_download.py with cookies support + rate limit tracking
- New: docs/YOUTUBE-SETUP.md complete documentation
- Updated: night-execute jobs to use new script
- Updated: TOOLS.md with YouTube section
- Added: 5 new YouTube notes (OpenClaw, cost optimization, task system, leads)
- Added: credentials/ to .gitignore

dashboard/tasks.json

@@ -1,5 +1,5 @@
 {
-  "lastUpdated": "2026-02-02T07:01:14.869118Z",
+  "lastUpdated": "2026-02-03T06:31:08.743257Z",
   "columns": [
     {
       "id": "backlog",
@@ -261,6 +261,13 @@
           "description": "",
           "created": "2026-02-02T07:01:14Z",
           "priority": "medium"
+        },
+        {
+          "id": "task-038",
+          "title": "Raport dimineata trimis pe email",
+          "description": "",
+          "created": "2026-02-03T06:31:08Z",
+          "priority": "medium"
         }
       ]
     }