oss-ci

name	oss-ci
description	Add or improve a minimal GitHub Actions CI pipeline for linting and tests. Use when the user says "set up CI", "add GitHub Actions", "block bad PRs", or wants a cache-enabled pull-request workflow that runs without secrets.
argument-hint	["repo-path-or-command-set"]
allowed-tools	Bash(*), Read, Grep, Glob, Write, Edit

OSS CI

Create the smallest GitHub Actions workflow that blocks broken pull requests and keeps maintenance friction low.

Context: $ARGUMENTS

Input Contract

• Primary input: existing local verification commands from the repository, OSS_TEST_STRATEGY.md, and any lint/type-check commands added by /oss-refactor.
• Default: if commands are ambiguous, choose the narrowest trustworthy lint + test pair that already works locally.

Output Contract

Produce:

1. A workflow in .github/workflows/ (create or update, do not duplicate existing intent).
2. OSS_CI.md summarizing:
   • workflow triggers
   • jobs and commands
   • cache strategy
   • failure policy
   • known follow-ups

The workflow must satisfy all of the following:

• Trigger on push and pull_request
• Run lint plus test
• Use dependency caching when the ecosystem supports it
• Fail the workflow on errors
• Require no secrets or external services

Non-goals

• Do not add deployment, release, or publish automation in this step.
• Do not build a matrix that the repository cannot maintain.
• Do not call live third-party APIs from CI.

Workflow Design Rules

• Reuse existing scripts if they already encode the right commands.
• Prefer one job with clear steps over a sprawling workflow.
• Add caching through the setup action when available:
  • Python: actions/setup-python with cache: pip
  • Node: actions/setup-node with package-manager cache
  • Go: actions/setup-go cache support
  • Rust: lightweight cargo cache only if already justified
• If the repo has both lint and test but one is flaky, do not hide it. Either stabilize it first or document why the workflow currently omits it.

Workflow

Step 1: Confirm local commands

• Run or inspect the exact commands that should execute in CI.
• Prefer commands that contributors can also run locally.

Step 2: Merge with any existing workflow

• If .github/workflows/ci.yml or similar already exists, extend it rather than creating a competing workflow.
• Keep the workflow readable for maintainers.

Step 3: Enforce CI-safe execution

• Mock or bypass external services.
• Use fixture files instead of network fetches.
• For paper or benchmark code, run a toy config, dry run, or tiny fixture path instead of full training or evaluation.
• Keep runtime short enough for pull requests.

Step 4: Document the workflow

Record in OSS_CI.md:

• what blocks merges now
• what remains intentionally out of scope
• how to reproduce the workflow locally

Anti-patterns

• Do not create a second workflow that duplicates an existing CI intent without improving it.
• Do not run commands in CI that are not already trusted locally.
• Do not hide omitted checks without recording why they were excluded in OSS_CI.md.
• Do not require secrets or live services in the primary blocking workflow.

Self-check

Before declaring this stage complete, verify:

• A workflow file exists under .github/workflows/.
• The workflow triggers on both push and pull_request.
• The workflow runs lint and test commands that match the repo's local verification path.
• OSS_CI.md records triggers, jobs, cache behavior, local reproduction steps, and known follow-ups.

Failure Handling

• If no reliable test command exists yet, stop and hand back to /oss-tests.
• If the only available lint tool requires a heavy new dependency, document the recommendation and keep the workflow focused on what already works.
• If an existing workflow overlaps, consolidate instead of duplicating.

Done Criteria

• .github/workflows/ contains one primary CI workflow for the repo's lint and test path.
• The workflow triggers on push and pull_request, fails on command failure, and avoids secrets or live services.
• OSS_CI.md records triggers, jobs, commands, cache behavior, local reproduction, and remaining gaps.