- Reject slash command registration when callbackUrl resolves to
loopback but Mattermost baseUrl is remote; log actionable error
directing user to set commands.callbackUrl explicitly
- Honor commands.nativeSkills: when enabled, dynamically list skill
commands and register them with oc_ prefix alongside built-in commands
- Reconcile existing commands on callback URL change: attempt PUT update,
fallback to delete+recreate for stale commands with mismatched URLs
- Add updateMattermostCommand() for PUT /api/v4/commands/{id}
Addresses Codex review round 4 (P1 + P2 items).
d486f208a2