docs: Update Quality Rails status to reflect active enforcement

Strict enforcement is now ACTIVE and blocking commits.

Updated documentation to reflect:
- Pre-commit hooks are actively blocking violations
- Package-level enforcement strategy
- How developers should handle blocked commits
- Next steps for incremental cleanup

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -341,12 +341,12 @@ TDD Anti-Patterns to Avoid
 
 Quality Rails - Mechanical Code Quality Enforcement
 
-**Status:** Installed (2026-01-30) - Currently in formatting-only mode
+**Status:** ACTIVE (2026-01-30) - Strict enforcement enabled ✅
 
 Quality Rails provides mechanical enforcement of code quality standards through pre-commit hooks
 and CI/CD pipelines. See `docs/quality-rails-status.md` for full details.
 
-What's Enforced (Once enabled):
+What's Enforced (NOW ACTIVE):
 
 - ✅ **Type Safety** - Blocks explicit `any` types (@typescript-eslint/no-explicit-any: error)
 - ✅ **Return Types** - Requires explicit return types on exported functions
@@ -358,14 +358,27 @@ What's Enforced (Once enabled):
 
 Current Status:
 
-- 🟡 **Pre-commit hooks**: Enabled (formatting only until violations fixed)
-- 🔴 **Strict enforcement**: Disabled (1,226 existing violations to fix first)
+- ✅ **Pre-commit hooks**: ACTIVE - Blocks commits with violations
+- ✅ **Strict enforcement**: ENABLED - Package-level enforcement
 - 🟡 **CI/CD pipeline**: Ready (.woodpecker.yml created, not yet configured)
 
+How It Works:
+
+**Package-Level Enforcement** - If you touch ANY file in a package with violations,
+you must fix ALL violations in that package before committing. This forces incremental
+cleanup while preventing new violations.
+
+Example:
+
+- Edit `apps/api/src/tasks/tasks.service.ts`
+- Pre-commit hook runs lint on ENTIRE `@mosaic/api` package
+- If `@mosaic/api` has violations → Commit BLOCKED
+- Fix all violations in `@mosaic/api` → Commit allowed
+
 Next Steps:
 
-1. Fix existing 1,226 lint violations (priority: explicit `any` types)
-2. Enable strict pre-commit enforcement in `.lintstagedrc.mjs`
+1. Fix violations package-by-package as you work in them
+2. Priority: Fix explicit `any` types and type safety issues first
 3. Configure Woodpecker CI to run quality gates on all PRs
 
 Why This Matters: