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>

commands/groom.md

@@ -0,0 +1,31 @@
+---
+description: Groom and improve issues. Without argument, reviews all open issues. With argument, grooms specific issue.
+argument-hint: [issue-number]
+---
+
+# Groom Issues
+
+Use the backlog-grooming and issue-writing skills.
+
+## If issue number provided ($1):
+
+1. **Fetch the issue**: `fj issue view $1`
+2. **Evaluate** against grooming checklist
+3. **Suggest improvements** for:
+   - Title clarity
+   - Description completeness
+   - Acceptance criteria quality
+   - Scope definition
+4. **Ask user** if they want to apply changes
+5. **Update issue** if approved: `fj issue edit $1 --body "..."`
+
+## If no argument (groom all):
+
+1. **List open issues**: `fj issue search -s open`
+2. **Review each** against grooming checklist
+3. **Categorize**:
+   - Ready: Well-defined, can start work
+   - Needs work: Missing info or unclear
+   - Stale: No longer relevant
+4. **Present summary** table
+5. **Offer to improve** issues that need work