riyadhafraa
8fb6d54d78
Adds artifacts/api-server/tests/conversations-leave.test.mjs, modeled on the existing apps-open.test.mjs, covering POST /conversations/:id/leave: - Solo member leaving deletes the conversation entirely. - Sole admin leaving with no successor auto-promotes the earliest-joined remaining member. - Sole admin leaving with a chosen successorId promotes that user. - Sole admin leaving with a non-member successorId returns 400 and leaves the group untouched (leaver still admin, no promotion). - Non-admin leaving a group removes them with no admin promotion. Tests create their own users (with the standard user role) and groups directly in Postgres so joined_at ordering is deterministic for the auto-promotion case, then exercise the route through HTTP using a real session cookie obtained from POST /api/auth/login. An after() hook cleans up all created conversations, participants, messages, role assignments, and users. The optional e2e for the chooser dialog is intentionally deferred and proposed as follow-up #51. Verified by running `pnpm --filter @workspace/api-server test` three times consecutively; all 15 tests pass on every run. Replit-Task-Id: e31c169d-a4f5-4387-a642-b39a422c1408