SOP support-ticket API: full CRUD + private stakeholder comments + notify-list, per app

Elazar directive 2026-07-15: extend each app's support-api (SOP) so PM/coder can fully CRUD tickets via API — no direct DB writes, no chrome-mcp driving, no asking a human to do it manually. Needed: (1) close/resolve/update-status endpoints, (2) private comment thread visible only to Elazar + the ticket's stakeholder agent, not the end user, (3) a notify-list field (agent names + emails) to ping on ticket events. Trigger case: SOP-VENUS-15 has been solved for a long time but sat un-notified/un-closed because coder-venus-cc had no API path to close it or notify the user. Each app (mars/pluto/venus) implements against its own support-api; see evolutiva-support-api.md for the shared contract to extend.