Add new commands, skills, and agents; remove token loading script

- Add groom, plan-issues, and roadmap commands
- Add skills for backlog-grooming, forgejo, issue-writing, roadmap-planning
- Add agents directory structure
- Remove load-forgejo-token.sh and SessionStart hook (using fj auth instead)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

settings.json

@@ -8,16 +8,6 @@
     "gopls-lsp@claude-plugins-official": true
   },
   "hooks": {
-    "SessionStart": [
-      {
-        "hooks": [
-          {
-            "type": "command",
-            "command": "~/.claude/scripts/load-forgejo-token.sh"
-          }
-        ]
-      }
-    ],
     "PreToolUse": [
       {
         "matcher": "Bash(git commit:*)",