Add authenticated designlang extract path for coulomb.social

Interactive Playwright session capture (XDG storageState, mode 0600)
plus a designlang pack wrapper that never prints secrets. Document the
intended OpenBao lane tenants/binky/coulomb-social/bubble-member for
later password custody; interactive capture is the default for Bubble.

scripts/package.json

@@ -0,0 +1,9 @@
+{
+  "name": "coulomb-social-scripts",
+  "private": true,
+  "type": "module",
+  "description": "Local tooling for auth capture and design extract (no app runtime)",
+  "dependencies": {
+    "playwright": "^1.49.0"
+  }
+}