docs(ai): queue data-testid hardening + reflect PR #152 + 3-runner setup

TODO.md: Promote pytest-xdist to ✅ (PR #151 carries it). Adds three new
backlog items:
- data-testid hardening for e2e-critical interactive elements (sparked
  by PR #152's selector drift work)
- per-test transactional rollback (next big speedup if needed)
- pytest-testmon for PR-time test selection

HANDOFF.md: Three open PRs now (#150, #151, #152), all independent.
Three Gitea runner agents now registered, so jobs run in parallel.
Combined with #151's xdist, the prior 1h 14m wall-clock should drop
to ~6-10 min. Updated merge order: #152 first (smallest), #150 next,
#151 last. After all three land, enable CI / backend then CI / e2e
as required status checks.

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

.ai/HANDOFF.md

@@ -4,11 +4,16 @@
 
 **Last updated:** 2026-04-25 (America/New_York)
 
-**Active task:** Land two stacked CI PRs (#150 + #151), then enable backend gate on `main`. See [CURRENT_TASK.md](CURRENT_TASK.md).
+**Active task:** Land three open CI PRs (#150 + #151 + #152), then enable backend + e2e gates on `main`. See [CURRENT_TASK.md](CURRENT_TASK.md).
 
-**Branch:** Currently on `fix/ci-workflow-config` (PR #150). The xdist work lives on `fix/ci-pytest-xdist` (PR #151), branched from #150.
+**Branches:** Three open PRs, all independent of each other for correctness:
+- `fix/ci-workflow-config` → PR #150
+- `fix/ci-pytest-xdist` → PR #151 (stacked on #150 for context but mergeable on its own)
+- `fix/e2e-test-selectors` → PR #152
 
-## Two open PRs to land in order
+**Runner setup:** Three Gitea Actions agents are now registered on the homelab box, so `backend` / `frontend` / `e2e` jobs run truly in parallel instead of serializing on a single agent. Combined with PR #151's xdist parallelization, the previous 1h 14m wall-clock should drop to ~6–10 min.
+
+## Three open PRs
 
 ### PR #150 — `fix/ci-workflow-config` → main
 
@@ -32,18 +37,31 @@ Carries (on top of #150):
 
 **Measured locally:** backend suite goes from `22m 27s` (serial, 1076 passed) → `4m 28s` (8 workers, 1076 passed). Same exit code, same test count.
 
+### PR #152 — `fix/e2e-test-selectors` → main
+
+Carries: five Playwright e2e selector updates against the current UI. The drift was inherited from the FlowPilot/PSA migration:
+
+- `Sessions` → `Session History` (page heading)
+- `Account Settings` → `Account Management` (page heading)
+- `/assistant` → `/pilot` (Phase 1 route rename; redirect still works)
+- Flow-session filtering and the Resume button moved behind the "Flow Sessions" tab on `/sessions` (default tab is "AI Sessions")
+- `resume.spec.ts` no longer starts at `/trees` — Resume button rendering moved to the session card on `/sessions`
+
+No product-code changes. Pure test updates.
+
 ## Immediate next steps
 
-1. **Watch PR #150 CI** on its latest sha (`e976fb4`). Both `CI / backend (pull_request)` and `CI / frontend (pull_request)` should be green. Merge if so.
+1. **Merge PR #152 first.** Smallest, lowest risk, no shared file with the other two PRs.
-2. **Watch PR #151 CI** after #150 merges. Once #151 is rebased / merged automatically, backend job time on subsequent runs should drop to the 4–6 min range.
+2. **Merge PR #150 next.** Backend test suite should be fully green (1076 passed, 0 failed, 0 errors).
-3. **Enable backend gate** on `main` branch protection — append `"CI / backend (pull_request)"` to `status_check_contexts`:
+3. **Merge PR #151 last.** Backend job time drops to ~4–6 min on the runner.
+4. **Enable backend gate** on `main` branch protection — append `"CI / backend (pull_request)"` to `status_check_contexts`:
    ```bash
    curl -X PATCH -H "Authorization: token $GITEA_TOKEN" \
      "https://gitea.resolutionflow.com/api/v1/repos/chihlasm/resolutionflow/branch_protections/main" \
      -H "Content-Type: application/json" \
      -d '{"status_check_contexts": ["CI / frontend (pull_request)", "CI / backend (pull_request)"]}'
    ```
-4. **Optional: also gate `CI / e2e (pull_request)`** once that job has run cleanly a few times. The artifact-v3 fix means it can finally run; we haven't verified its actual outcome yet.
+5. **Then enable `CI / e2e (pull_request)`** — same PATCH, append to the list. Verify e2e is reliably green for at least one PR run before locking it in.
 
 ## Uncommitted state
 

.ai/TODO.md

@@ -5,9 +5,12 @@
 
 ## Up next
 
-- [ ] **Parallelize backend pytest with pytest-xdist.** Currently the backend suite takes ~22 min wall-clock for `1076 passed, 35 deselected` (verified locally 2026-04-25). With `-n auto` on the homelab Gitea Actions runner, this should land in the 3–6 min range depending on core count. Blocker: `test_db` fixture in `backend/tests/conftest.py` does `DROP SCHEMA public CASCADE` per test, which two workers would race on. Standard fix: one database per worker, derived from `PYTEST_XDIST_WORKER` env var inside conftest. The runner has spare CPU, so prioritize once main is green and the 54-failure cleanup has landed.
+- [ ] **Parallelize backend pytest with pytest-xdist.** ✅ landing as PR #151. Verified locally: backend suite 22 min → 4m 28s with `-n auto` on the 8-core homelab runner. Per-worker DB isolation via `PYTEST_XDIST_WORKER` in conftest.py.
 
 ## Backlog
 
 - [ ] **Frontend lint warnings cleanup.** 23 `react-hooks/exhaustive-deps` warnings remain after PR #149 (mostly missing-deps in useEffect). Either fix them or audit them for known-safe ones and add eslint-disable comments. Not blocking CI today.
 - [ ] **Audit `filterwarnings` ignores added in `wip(handoff): restore backend suite to green`.** Codex added narrow `ResourceWarning` filters for unclosed socket/transport/event-loop noise from pytest-asyncio teardown. Worth periodically reviewing whether those are still needed (e.g. when bumping pytest-asyncio) — if a real warning appears in those forms it would be silenced.
+- [ ] **Add `data-testid` attributes to e2e-critical interactive elements.** PR #152 fixed five Playwright tests by chasing UI-text changes (`Sessions` → `Session History`, `Account Settings` → `Account Management`, `/assistant` → `/pilot`, "Flow Sessions" tab, Resume button on session cards). Each was a one-line selector update, but every UI churn re-breaks them. Adding stable `data-testid` attributes on the targeted elements (page heading wrappers, tab nav, primary action buttons) and switching tests to `getByTestId` would make these immune to copy/route renames. Scope it small — start with `SessionHistoryPage` heading, the AI/Flow Sessions tab buttons, the per-session `Resume` button, and the command-palette FlowPilot option.
+- [ ] **Per-test transactional rollback in `test_db` fixture.** Bigger engineering than xdist (which we already shipped). Instead of `DROP SCHEMA public CASCADE` per test, wrap each test in a savepoint and rollback at teardown. ~30-40% additional speedup on top of xdist for test-DB-heavy tests. Real refactor; only worth it if the suite gets significantly larger or runs more frequently.
+- [ ] **Consider `pytest-testmon` for PR-time test selection.** Tracks which tests touched which source files and only re-runs affected ones. Best for small PRs touching ~few files. Adds cache-invalidation complexity; only worth it if the suite stays painfully long even after xdist.