chore(scheduler): Execute onboarding-audit-agent

- Executed onboarding-audit-agent daily task.
- Validated onboarding from a clean checkout (npm install, build, test, lint).
- Updated package-lock.json with missing metadata (license, engines).
- Created audit report in reports/audit/.
- Created required context/todo/decision artifacts in src/.
- Completed scheduler lock cycle.

Co-authored-by: PR0M3TH3AN <[email protected]>

src/context/CONTEXT_onboarding-audit-agent.md

@@ -0,0 +1,18 @@
+# Context: Onboarding Audit Agent
+
+- Agent: onboarding-audit-agent
+- Cadence: daily
+- Run Start: 2026-02-18T21:00:00Z
+- Prompt: src/prompts/daily/onboarding-audit-agent.md
+
+## Goal
+Ensure fresh developer onboarding works from a clean checkout by validating README onboarding steps.
+
+## Scope
+- Validating onboarding from a clean environment.
+- Executing `npm install`, `npm run build`, `npm test`, `npm run lint`.
+- Documenting failures.
+
+## Constraints
+- Follow docs first.
+- Minimal churn.