chore(ai): update HANDOFF.md and SESSION_LOG.md for session end

Reflect current state: dual-agent migration + Codex review round +
branch cleanup (RLS test gating, Phase 9 docs, .remember/ gitignore,
landing-handoff deletion). Working tree clean, no active task, 3
cleanup commits queued to push.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.ai/SESSION_LOG.md

@@ -20,3 +20,4 @@
 - Left for next session: first real feature task should replace the seed `CURRENT_TASK.md` and update `HANDOFF.md` with real resume state.
 - Files touched: `.ai/*.md` (created), `CLAUDE.md` (rewritten), `AGENTS.md` (created), `SESSION-HANDOFF.md` (deleted).
 - Follow-up (same day): Codex review pass flagged stale SaaS-role claim and incomplete file-listings carried over from the pre-migration CLAUDE.md. Verified against `backend/app/core/permissions.py`, `frontend/src/hooks/usePermissions.ts`, `backend/app/api/deps.py`, `backend/app/api/router.py`, and `backend/app/services/psa/`. Corrected PROJECT_CONTEXT.md role hierarchy (`super_admin > owner > engineer > viewer`, not `team_admin`), added `require_account_owner` / `require_team_admin` to deps list, replaced stale endpoint comment with a summary pointing at `api/router.py`, added `exceptions.py` + `ticket_context.py` to the PSA file list. Also replaced seed-example content in `CURRENT_TASK.md` and `TODO.md` with clearer empty-state sentinels.
+- Branch cleanup (same day): committed pending test-isolation work as `b14a16a chore(tests): gate RLS tests behind RUN_RLS_TESTS flag`, new Phase 9 review doc as `b3506b5 docs(pilot): phase 9 review issues`, and `.remember/` gitignore entry as `b3be1e0 chore: ignore .remember/ skill runtime state`. Deleted `docs/landing-handoff/` (prepared for external design work, not meant to live in the repo). Working tree clean; 3 cleanup commits unpushed.