Merge pull request #316 from Ark0N/chore/test-script-split

chore(test): make `npm test` the CI gate and give each excluded suite a runner

.github/CONTRIBUTING.md

@@ -37,11 +37,20 @@ npm run check:frontend-syntax  # syntax-checks the plain-JS frontend modules
 ### Tests
 
 ```bash
-npm test -- test/<file>.test.ts   # one file (the normal way)
-npm run test:ci                    # the full CI sweep
+npm test                          # the gate — exactly what CI runs
+npm test -- test/<file>.test.ts   # one file
 ```
 
-**Never run bare `npm test`.** The default config includes browser-driven Playwright suites that need a live server, Chromium, and environment-specific baselines; they will hang or fail on a normal machine. `test:ci` is the honest "run everything" command, it is exactly what CI runs.
+`npm test` is the same suite CI runs, so a green run locally means a green run there. It leaves out three suites that cannot pass on an arbitrary machine, each with its own command:
+
+```bash
+npm run test:browser   # Playwright + chromium (+ a live server; codex-predictive-echo needs a real codex binary)
+npm run test:mobile    # the above plus environment-specific PNG baselines
+npm run test:perf      # wall-clock benchmarks — run on an otherwise idle machine
+npm run test:all       # literally everything, environmental failures included
+```
+
+Expect `test:browser`/`test:mobile`/`test:perf` to fail where the machine cannot provide what they need; read that as "not runnable here", not as a regression. `config/test-suites.ts` holds the globs, and both configs derive from it, so the exclusions and those runners cannot drift apart.
 
 If you add a test that binds a port, pick a unique one at 3150 or above (search the repo for `const PORT =` first). Never 3000.
 

.github/workflows/ci.yml

@@ -87,7 +87,9 @@ jobs:
           fi
 
       - name: Run unit & integration tests
-        # Excludes the browser-driven mobile suite (test/mobile/**); see config/vitest.ci.config.ts.
+        # Excludes the suites that need chromium, per-machine PNG baselines or a
+        # quiet machine — see config/test-suites.ts for the list and the reason
+        # behind each entry. Identical to what `npm test` runs locally.
         # Safe in CI: TmuxManager no-ops all shell commands under VITEST (test/setup.ts).
         run: npm run test:ci
 
@@ -99,6 +101,11 @@ jobs:
         run: npx vitest run
         working-directory: packages/xterm-zerolag-input
 
-# Note: The browser-driven mobile suite (test/mobile/**) is excluded from CI —
-# it needs a live server + chromium + environment-specific PNG baselines.
-# Run it locally/manually. All other tests run via the `test` job above.
+# Note: three suites are excluded from CI, each with its own local runner:
+#   npm run test:browser  Playwright + chromium (+ a live server, and a real
+#                         codex binary for codex-predictive-echo)
+#   npm run test:mobile   the above plus environment-specific PNG baselines
+#   npm run test:perf     wall-clock benchmarks; need an otherwise idle machine
+# config/test-suites.ts holds the globs; the configs derive from it so the
+# exclusions here and those runners cannot drift apart. Everything else runs in
+# the `test` job above, which is the same thing `npm test` runs.