Add compliance validation pipeline for imported game catalog

.github/workflows/compliance-validation.yml

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+name: Compliance Validation
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  validate-catalog:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Run compliance validation
+        run: python scripts/validate/validate_catalog.py data/catalog/imported-games.json --report-path data/reports/compliance-report.md

data/catalog/imported-games.json

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+[]

data/reports/compliance-report.md

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+# Compliance Report
+
+Generated at: 2026-04-22 05:00:53Z
+
+## Summary
+
+| Metric | Value |
+| --- | ---: |
+| Total entries scanned | 0 |
+| Total issues | 0 |
+| Blocked entries | 0 |
+
+## Issues
+
+No compliance issues found.

scripts/validate/build_catalog.py

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+#!/usr/bin/env python3
+"""Catalog build wrapper that runs compliance validation and emits a report."""
+
+from __future__ import annotations
+
+import subprocess
+import sys
+from pathlib import Path
+
+
+def main() -> int:
+    repo_root = Path(__file__).resolve().parents[2]
+    validator = repo_root / "scripts" / "validate" / "validate_catalog.py"
+    catalog = repo_root / "data" / "catalog" / "imported-games.json"
+    report = repo_root / "data" / "reports" / "compliance-report.md"
+
+    cmd = [sys.executable, str(validator), str(catalog), "--report-path", str(report)]
+    proc = subprocess.run(cmd, cwd=repo_root)
+    return proc.returncode
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())