Adds .github/workflows/e2e.yml, which runs `pnpm run test:e2e` against the
external DeepSeek API (https://api.deepseek.com) using a DEEPSEEK_API_KEY repo
secret. ci.yml stays keyless/forkable; this is a separate, secret-consuming
workflow that fills the gap of nothing in CI exercising the with-key suites.
- Triggers: workflow_dispatch + push to main/master + nightly schedule +
pull_request. A job-level `if:` skips untrusted PRs (forks + Dependabot, both
keyless), keying the Dependabot test on the PR author (pull_request.user.login)
not github.actor. A job-level skip reports as success, so this is safe as a
required check.
- Unconditional preflight hard-fails on a missing secret so the self-skipping
suite can't report a false green when the key is misconfigured.
- Secret scoped to the preflight + e2e steps only; permissions: contents: read;
DEEPSEEK_BASE_URL pinned to the external API; single Node 24; timeout 45m;
cancel-in-progress only for PR runs.
Plan converged with Codex (gpt-5.5:xhigh) over 3 review rounds.
Tianyi Cui
9caaa6c95e