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>

scripts/load-forgejo-token.sh

@@ -1,9 +0,0 @@
-#!/bin/bash
-# Load Forgejo token from macOS Keychain into Claude Code session
-if [ -n "$CLAUDE_ENV_FILE" ]; then
-  TOKEN=$(security find-generic-password -a "$USER" -s "forgejo-token" -w 2>/dev/null)
-  if [ -n "$TOKEN" ]; then
-    echo "export FORGEJO_TOKEN=\"$TOKEN\"" >> "$CLAUDE_ENV_FILE"
-  fi
-fi
-exit 0