Run ROM-free CI on the available Forgejo runner (#45)

README.md

@@ -56,6 +56,15 @@ npm run check:vendor
 
 Local-ROM tests use `Pokemon - Crystal Version (UE) (V1.1) [C][!].gbc` at the root, or `CRYSTAL_ROM_PATH`. They skip when absent; no test downloads a ROM. Game files, private reference builds and gameplay screenshots must remain ignored.
 
+[CI checks](https://git.azuze.fr/kawa/Crystal/actions?workflow=checks.yml) run on pushes and pull requests, or manually from Actions. The [workflow](.forgejo/workflows/checks.yml) uses the shared `docker-build` runner with Node 22 in a Debian container. It installs from the lockfile, runs synthetic unit and Chromium/WebKit browser tests, builds both applications, and checks vendor integrity and native release isolation. `CRYSTAL_ROM_PATH` points to a verified absent file, so ROM-dependent tests skip; `check:reference` remains a local check requiring the private ROM and reference build.
+
+To reproduce the CI test selection locally:
+
+```sh
+CRYSTAL_ROM_PATH=/nonexistent/crystal-ci.gbc npm test -- --maxWorkers=2
+CRYSTAL_ROM_PATH=/nonexistent/crystal-ci.gbc npm run test:e2e -- --workers=2
+```
+
 `git config core.hooksPath .githooks` keeps the forge's project board in step with commits: `Closes #N` in a message moves card N to Fait and closes it, any other `#N` moves it to En cours, and a commit on `main` without a reference adds a closed card to Fait. `[no-card]` skips a commit. See [project-board.mjs](scripts/project-board.mjs).
 
 The [full port plan](docs/PLAN.md) covers remaining game systems, save slots, the world map, Pokédex, internet Link, friends and optional mobile step support for egg hatching. See the [architecture](docs/ARCHITECTURE.md) and [routine map and verification](docs/NATIVE_PORT.md) for module boundaries and reference checks.