Add project guidelines verification script

Created comprehensive verification script to check codebase against PROJECT_GUIDELINES.md

Features:
- Checks for custom CSS (TailwindCSS requirement)
- Detects JavaScript files that should be TypeScript
- Verifies no secrets committed (.env, credentials.json)
- Validates code compiles (go build)
- Finds local binaries (should use container builds)
- Quick checks with clear pass/fail/warning output

Usage:
  make verify-guidelines
  ./scripts/verify-quick.sh

Current codebase status:
  - 12 templates with custom CSS (need Tailwind conversion)
  - 2 .js files in web/static/ (need TypeScript conversion)
  - 1 binary file (./bookhoard)

This addresses the trust issue: AI now has a tool to prove guideline compliance

Makefile

@@ -57,3 +57,8 @@ test-env-up:
 # Stop test environment
 test-env-down:
 	podman compose down -v
+
+# Verify project guidelines compliance
+verify-guidelines:
+	@echo "Running project guidelines verification..."
+	@./scripts/verify-quick.sh