feat(scripts): add emit-all orchestrator + initial compliance artifacts

Adds scripts/compliance/emit-all.mjs which runs all three compliance
emitters in --check mode and exits non-zero if any artifact is stale.
Adds compliance:emit-all root package script.

Generates initial compliance/retention-policy.yml and
compliance/sub-processors.yml from the template collections.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -24,6 +24,7 @@
     "compliance:data-map": "node scripts/compliance/emit-data-map.mjs",
     "compliance:retention-policy": "node scripts/compliance/emit-retention-policy.mjs",
     "compliance:sub-processors": "node scripts/compliance/emit-sub-processors.mjs",
+    "compliance:emit-all": "node scripts/compliance/emit-all.mjs",
     "work": "node scripts/work/cli.mjs",
     "format": "prettier --write \"**/*.{ts,tsx,js,jsx,json,md}\"",
     "format:check": "prettier --check \"**/*.{ts,tsx,js,jsx,json,md}\"",