feat(framework): P1+P2 — public sanitization + blocking CI gate (#572)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

packages/mosaic/framework/examples/overlays/e2e-loop.json

@@ -0,0 +1,29 @@
+{
+  "_comment": "EXAMPLE Claude runtime overlay managed by Mosaic. Copy/adapt and merge into ~/.claude/settings.json as needed. Replace the placeholder project paths and skills with your own. Never auto-loaded.",
+  "model": "opus",
+  "additionalAllowedCommands": [
+    "alembic",
+    "alembic upgrade",
+    "alembic downgrade",
+    "uvicorn",
+    "ruff",
+    "ruff check",
+    "ruff format",
+    "black",
+    "isort"
+  ],
+  "projectConfigs": {
+    "app": {
+      "path": "~/src/your-app",
+      "model": "opus",
+      "skills": ["prd"],
+      "guides": ["E2E-DELIVERY", "QA-TESTING"]
+    },
+    "review": {
+      "path": "~/src/your-app",
+      "model": "opus",
+      "skills": ["code-review"],
+      "guides": ["CODE-REVIEW"]
+    }
+  }
+}