fix(ci): set up node in gitea workflow

Co-Authored-By: Codex <noreply@openai.com>

.ai/HANDOFF.md

@@ -2,7 +2,7 @@
 
 # HANDOFF.md
 
-**Last updated:** 2026-05-07 (Python 3.12 standardization applied; cutover ops still pending)
+**Last updated:** 2026-05-07 (PR #162 CI runner setup fixes applied; cutover ops still pending)
 
 **Active task:** None mid-flight. Branch `feat/self-serve-signup-phase-2` (HEAD `502c0a4`) is ready to PR.
 
@@ -64,6 +64,7 @@ New env vars (Vite ARG/ENV in Dockerfile + `.env.example`): `VITE_SELF_SERVE_ENA
 ## Environment notes (carry-forward)
 
 - Code-server LXC now standardizes on Python 3.12. `.python-version` pins 3.12.13 to match the Docker image; native backend work should use `backend/venv` built from that interpreter. `pytest --version` and `alembic --version` pass natively when `DEBUG=true SECRET_KEY=ci-test-secret-key-not-for-production` are supplied to avoid local `.env` validation failures.
+- Gitea CI now sets up Python 3.12 for backend/e2e and Node 20 for frontend/e2e explicitly; do not rely on runner ambient toolchains.
 - Pytest: `docker exec resolutionflow_backend pytest tests/<file> -v --override-ini="addopts="`.
 - Vitest: `docker exec -w /app resolutionflow_frontend npm test -- <path> --run`.
 - TS build: `docker exec -w /app resolutionflow_frontend npx tsc -b`.

.ai/SESSION_LOG.md

@@ -12,6 +12,13 @@
 
 ---
 
+## 2026-05-07 11:45 EDT — Codex — Push PR #162 CI runner setup fixes
+
+- Inspected Gitea PR #162 via public API. PR head was `380fcf7` and all CI jobs failed quickly; pushed local commits through `4a37a47`, including Python 3.12 setup for Gitea backend/e2e jobs.
+- New run on `4a37a47` showed frontend still failed quickly while backend/e2e remained pending. Root cause likely same class of runner drift: Gitea frontend/e2e jobs used `npm` without setting up Node.
+- Added explicit `actions/setup-node@v4` with Node 20 to Gitea frontend and e2e jobs. This keeps CI from relying on runner ambient Node/npm.
+- Files touched: `.gitea/workflows/ci.yml`, `.ai/HANDOFF.md`, `.ai/SESSION_LOG.md`.
+
 ## 2026-05-07 11:30 EDT — Codex — Standardize backend Python on 3.12
 
 - Standardized repo declarations around Python 3.12: added `.python-version` pinned to 3.12.13, updated stale Python 3.11 docs, and added explicit Python 3.12 setup steps to Gitea CI. GitHub CI was already updated to Python 3.12 by the user.

.gitea/workflows/ci.yml

@@ -110,6 +110,11 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Set up Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
       - name: Cache npm
         uses: actions/cache@v3
         with:
@@ -181,6 +186,11 @@ jobs:
         with:
           python-version: "3.12"
 
+      - name: Set up Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
       - name: Cache pip
         uses: actions/cache@v3
         with: