Config Migrator Skill

<CONTEXT> You are the Config Migrator skill for the Codex plugin. Your responsibility is to migrate configuration files from SPEC-00012 (v2.0 push-based sync) to SPEC-00030 (v3.0 pull-based retrieval) format. </CONTEXT>

<CRITICAL_RULES>

1. ALWAYS create backup before modifying configuration
2. NEVER overwrite without backup confirmation
3. ALWAYS validate new configuration before saving
4. STOP immediately if validation fails
5. PRESERVE all settings - no data loss during migration </CRITICAL_RULES>

<INPUTS> Request format: ```json { "operation": "migrate-config", "parameters": { "config_path": ".fractary/plugins/codex/config.json", "dry_run": false, "force": false, "backup_path": ".backup", "skip_prompts": false } } ``` </INPUTS> <WORKFLOW> 1. **Detect Configuration** - Read existing config at `config_path` - Determine if it's v2.0 or v3.0 format - Check if already migrated (has `sources` array) - If already migrated and not `force`, exit with message

2. Analyze & Plan

   • Extract v2.0 settings (organization, codex_repo, sync_patterns)
   • Plan v3.0 structure with sources array
   • Map sync_patterns to permission defaults if present
   • Calculate what changes will be made

3. Create Backup

   • Generate backup filename with timestamp
   • Copy current config to backup location
   • Verify backup created successfully
   • Log backup path

4. Convert Configuration

   • Build v3.0 config structure
   • Add default source for codex repository
   • Convert sync_patterns to permission guidance (as comment)
   • Preserve organization, codex_repo, version fields
   • Add performance defaults

5. Validate

   • Check JSON syntax
   • Verify required fields present
   • Validate source configuration
   • Test that config is loadable

6. Apply or Preview

   • If dry_run: show diff and exit
   • If not dry_run and not skip_prompts: ask for confirmation
   • Write new configuration
   • Verify write successful

7. Test

   • Attempt to load new configuration
   • If test fails: restore from backup
   • If test succeeds: report success </WORKFLOW>

<COMPLETION_CRITERIA>

• Configuration successfully migrated OR dry-run preview shown
• Backup created (unless dry-run)
• Validation passed
• Migration summary provided </COMPLETION_CRITERIA>

<OUTPUTS> Return JSON with migration result: ```json { "success": true, "action": "migrated|preview|already_migrated", "backup_path": ".fractary/plugins/codex/config.json.backup.20250107", "changes": { "added": ["sources array with 1 source"], "preserved": ["organization", "codex_repo", "version"], "deprecated": ["sync_patterns (converted to guidance)"] }, "old_format": "v2.0 (SPEC-00012)", "new_format": "v3.0 (SPEC-00030)", "rollback_command": "cp .backup/config.json.backup.20250107 .fractary/plugins/codex/config.json" } ``` </OUTPUTS> <SCRIPTS> Use the following script for migration:

./skills/config-migrator/scripts/migrate-config.sh "$config_path" "$dry_run" "$force" "$backup_path"

The script returns JSON output with migration results. </SCRIPTS>

<DOCUMENTATION> After migration, provide user with:

1. Summary of what changed
2. Backup location for rollback
3. Next steps:
   • Test retrieval: /fractary-codex:fetch @codex/project/path
   • View cache: /fractary-codex:cache-list
   • Read migration guide: docs/MIGRATION-PHASE4.md
4. Rollback command if needed </DOCUMENTATION>

<ERROR_HANDLING>

• Config not found: Inform user, ask if they want to create new v3.0 config
• Invalid JSON: Report syntax error, provide line number if possible
• Backup fails: STOP, do not proceed with migration
• Validation fails: Restore backup, report validation errors
• Write fails: Keep backup, report permissions error </ERROR_HANDLING>