Adds `.claude/skills/plan-tickets/SKILL.md` and trims `implement-tickets` to dispatch-only, with the matching `.omp/agents/ticket-implementer.md` update.
Docs/skills only — no backend, userscript, or web changes.
Reviewed-on: #162
Co-authored-by: Sulthan Zaki <sultankiki05@gmail.com>
Co-committed-by: Sulthan Zaki <sultankiki05@gmail.com>
