Address Will's feedback

Author: clean6378-max-it

README.md

@@ -145,12 +145,14 @@ claude-code-chat-browser/
 
 See **[`CONTRIBUTING.md`](CONTRIBUTING.md)** for full setup, conventions, and where to change each layer. New contributors should follow **[`docs/onboarding.md`](docs/onboarding.md)** for a first-PR walkthrough and reading order.
 
+Maintainer coverage is concentrated; see [`docs/onboarding.md`](docs/onboarding.md#maintainer-coverage-bus-factor) and [`.github/CODEOWNERS`](.github/CODEOWNERS) for risk and mitigations.
+
 Quick start:
 
 ```bash
 pip install -r requirements-dev.txt
 pytest
-npm ci && npm test   # only if you changed static/js/
+npm ci && npm run test:coverage   # only if you changed static/js/
 ```
 
 `requirements.txt` carries only the runtime dep (Flask); `requirements-dev.txt` pulls it in via `-r` and adds pytest (+ coverage). Frontend tests use vitest (`package.json`).

docs/onboarding.md

@@ -68,7 +68,7 @@ ruff check .
 ruff format --check .
 
 # Type check (CI: Ubuntu only)
-mypy -p api -p utils -p models -p scripts
+mypy -p api -p utils -p models
 
 # Security audit (production deps)
 pip-audit -r requirements.txt
@@ -81,7 +81,7 @@ pytest tests/test_api_integration.py -v
 
 # Frontend — only if you changed static/js/
 npm ci
-npm test
+npm run test:coverage
 ```
 
 Fix formatting with `ruff format .` when `ruff format --check` fails.