Auth UI New Backend Origin Implementation Plan

For agentic workers: REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (- [ ]) syntax for tracking.

Goal: Make the production Auth UI honor OIDC redirects from https://airi-server-next.up.railway.app without broadening trust to arbitrary Railway origins.

Architecture: Keep the existing exact-origin trust model in server-auth-context.ts. Add one exact production origin and prove the redirect context resolves to it while existing untrusted-origin tests remain green.

Tech Stack: TypeScript, Vue/Vite, Vitest, pnpm, GitHub Actions, Cloudflare Pages

Task 1: Trust the new Go backend origin

Files:

Modify: apps/ui-server-auth/src/modules/server-auth-context.test.ts:18
Modify: apps/ui-server-auth/src/modules/server-auth-context.ts:17
Step 1: Write the failing regression test

Add this case after the existing trusted server-dev case:

it('uses the trusted new Go backend origin carried by standalone server redirects', () => {
  const currentUrl = 'https://auth.airi.build/ui/sign-in?api_server_url=https%3A%2F%2Fairi-server-next.up.railway.app&client_id=airi-stage-pocket'

  expect(resolveStandaloneServerAuthContext(
    currentUrl,
    'https://api.airi.build',
  )).toEqual({
    apiServerUrl: 'https://airi-server-next.up.railway.app',
    currentUrl,
  })
})

Step 2: Run the focused test and verify RED

Run:

bash

pnpm -F @proj-airi/ui-server-auth exec vitest run src/modules/server-auth-context.test.ts

Expected: one assertion fails because resolveStandaloneServerAuthContext returns null for the new backend origin.

Step 3: Add the exact trusted production origin

Update the allowlist to:

const TRUSTED_STANDALONE_API_SERVER_ORIGINS = [
  'https://api.airi.build',
  'https://airi-server-next.up.railway.app',
  'https://airi-server-dev.up.railway.app',
]

Step 4: Run the focused test and verify GREEN

Run:

bash

pnpm -F @proj-airi/ui-server-auth exec vitest run src/modules/server-auth-context.test.ts

Expected: the file passes with six tests, including the existing crafted-origin rejection.

Step 5: Commit the behavior change

bash

git add apps/ui-server-auth/src/modules/server-auth-context.ts apps/ui-server-auth/src/modules/server-auth-context.test.ts
git commit -m "fix(ui-server-auth): trust new Go backend origin"

Task 2: Verify the Auth UI package

Files:

Verify: apps/ui-server-auth/**
Step 1: Run the complete Auth UI test suite

bash

pnpm -F @proj-airi/ui-server-auth exec vitest run

Expected: all Auth UI test files pass.

Step 2: Run type checking

bash

pnpm -F @proj-airi/ui-server-auth typecheck

Expected: exit code 0 with no TypeScript errors.

Step 3: Run the production build

bash

VITE_SERVER_URL=https://api.airi.build pnpm -F @proj-airi/ui-server-auth build

Expected: Vite exits with code 0 and writes apps/ui-server-auth/dist.

Step 4: Inspect the built bundle

bash

rg -l 'airi-server-next\.up\.railway\.app' apps/ui-server-auth/dist/assets/*.js

Expected: at least one emitted JavaScript asset contains the exact new backend origin.

Task 3: Publish, deploy, and validate production

Files:

Verify: .github/workflows/deploy-cloudflare-auth-ui.yml
Step 1: Push the feature branch and open a pull request

bash

git push -u origin codex/auth-ui-new-backend
PR_URL="$(gh pr create --repo moeru-ai/airi --base main --head Neko-233:codex/auth-ui-new-backend --title "fix(ui-server-auth): trust new Go backend origin" --body $'## Summary\n- trust the new Railway Go backend in the standalone Auth UI\n- preserve exact-origin validation for untrusted redirects\n\n## Test plan\n- focused and complete Auth UI Vitest suites\n- Auth UI typecheck and production build\n- emitted bundle origin check')"
printf '%s' "$PR_URL" > /tmp/auth-ui-new-backend-pr-url
printf '%s\n' "$PR_URL"

Expected: GitHub returns a pull request URL targeting moeru-ai/airi:main.

Step 2: Merge after required checks pass

bash

PR_URL="$(cat /tmp/auth-ui-new-backend-pr-url)"
gh pr checks "$PR_URL" --watch
gh pr merge "$PR_URL" --squash --delete-branch

Expected: the pull request is merged into main.

Step 3: Wait for the production Auth UI deployment

bash

RUN_ID="$(gh run list --repo moeru-ai/airi --workflow deploy-cloudflare-auth-ui.yml --branch main --limit 1 --json databaseId --jq '.[0].databaseId')"
gh run watch --repo moeru-ai/airi "$RUN_ID"

Expected: Cloudflare Pages (Auth UI) completes successfully for the merge commit.

Step 4: Validate the deployed bundle and login boundary

Fetch the current Auth UI HTML, resolve its hashed JavaScript assets, and verify one asset contains the exact new backend origin:

bash

LIVE_DIR="$(mktemp -d /tmp/airi-auth-ui-live.XXXXXX)"
printf '%s' "$LIVE_DIR" > /tmp/airi-auth-ui-live-dir
mkdir -p "$LIVE_DIR/assets"
curl -fsSL https://auth.airi.build/ui/sign-in -o "$LIVE_DIR/index.html"
rg -o 'src="/assets/[^"]+\.js' "$LIVE_DIR/index.html" | sed 's/^src="//' | while read -r asset; do
  curl -fsSL "https://auth.airi.build${asset}" -o "$LIVE_DIR/assets/$(basename "$asset")"
done
rg -l 'https://airi-server-next\.up\.railway\.app' "$LIVE_DIR"/assets/*.js

Repeat the new backend OIDC authorize redirect and confirm the final Auth UI location carries the new api_server_url:

bash

LIVE_DIR="$(cat /tmp/airi-auth-ui-live-dir)"
curl -sS -L -o /dev/null -D "$LIVE_DIR/redirects.headers" -G 'https://airi-server-next.up.railway.app/api/auth/oauth2/authorize' \
  --data-urlencode 'response_type=code' \
  --data-urlencode 'client_id=airi-stage-pocket' \
  --data-urlencode 'redirect_uri=ai.moeru.airi-pocket://links/auth/callback' \
  --data-urlencode 'scope=openid profile email offline_access' \
  --data-urlencode 'state=production-validation' \
  --data-urlencode 'code_challenge=E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM' \
  --data-urlencode 'code_challenge_method=S256' \
  --data-urlencode 'resource=https://airi-server-next.up.railway.app'
rg -n 'location: https://auth\.airi\.build/.*api_server_url=https%3A%2F%2Fairi-server-next\.up\.railway\.app' -i "$LIVE_DIR/redirects.headers"

Send an OPTIONS preflight and a diagnostic POST to:

text

https://airi-server-next.up.railway.app/api/auth/check-email

Run:

bash

LIVE_DIR="$(cat /tmp/airi-auth-ui-live-dir)"
curl -sS -o /dev/null -D "$LIVE_DIR/preflight.headers" \
  -X OPTIONS 'https://airi-server-next.up.railway.app/api/auth/check-email' \
  -H 'Origin: https://auth.airi.build' \
  -H 'Access-Control-Request-Method: POST' \
  -H 'Access-Control-Request-Headers: content-type'
rg -n 'HTTP/.* 204|access-control-allow-origin: https://auth\.airi\.build' -i "$LIVE_DIR/preflight.headers"

curl -sS -o "$LIVE_DIR/check-email.json" -w '%{http_code}\n' \
  -X POST 'https://airi-server-next.up.railway.app/api/auth/check-email' \
  -H 'Origin: https://auth.airi.build' \
  -H 'Content-Type: application/json' \
  --data '{"email":"[email protected]"}'
jq -e '.exists == false and .hasPassword == false' "$LIVE_DIR/check-email.json"

Expected: preflight returns 204 with access-control-allow-origin: https://auth.airi.build, and the diagnostic lookup returns 200 with a valid response body.