chore: bootstrap gscMy on @gsc/web-kit + PAM/JIT request flow

Initial commit for gscMy carved out as its own repo (was tracked
loosely under the monorepo's web/ which is gitignored).

What this contains:
- Auth: next-auth v5 via @gsc/web-kit createAuth (Keycloak only,
  identity sourced from claims, no admin.users writes)
- Chrome: @gsc/web-kit AdminShell — replaces the legacy MyShell.
  Sidebar JSON config carried over and mapped to DbMenuItem.
- Middleware: createAuthMiddleware. Public: /access-denied,
  /auth/keycloak, /signed-out, /api/health, /api/pam/approve.
- RP-initiated signout at /api/auth/signout → Keycloak end_session →
  /signed-out (mirrors gscAdmin).
- Phosphor-iconned access-denied + signed-out landing pages.

PAM/JIT request flow (ported from gscAdmin's pre-strip git history):
- /access page (Active + Eligible tables, request modal with
  duration slider + justification + optional MFA)
- API: /api/pam/{eligible, active, audit, request, approve/:token,
  revoke/:id}
- src/lib/{authz, pam, pam-mail, pam-mfa}.ts — same files as
  gscAdmin had before the strip. PAM tables (admin.privilege_*)
  are shared with gscAdmin; gscMy uses the same Prisma model defs.
- Top-bar widget shows active grants with countdown + revoke.

Build/Deploy: Dockerfile (monorepo-root context), k8s manifests for
my.gosec.internal, self-signed TLS placeholder, DNS A record.
Keycloak gsc-my client extended to include my.gosec.internal/* in
redirect_uris + web_origins.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -0,0 +1,43 @@
+{
+  "name": "gsc-my",
+  "version": "1.0.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev -p 3000",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint",
+    "typecheck": "tsc --noEmit",
+    "postinstall": "prisma generate"
+  },
+  "dependencies": {
+    "@gsc/chat": "file:../../infra/gscAICoreSystem/frontends/gscBicameralFrontend",
+    "@gsc/web-kit": "file:../../templates/gsc-web-kit",
+    "@limitless/ui": "file:../../templates/limitless-ui",
+    "@phosphor-icons/web": "2.1.1",
+    "@prisma/client": "^6.1.0",
+    "bootstrap": "^5.3.3",
+    "clsx": "^2.1.0",
+    "next": "^16.1.1",
+    "next-auth": "^5.0.0-beta.25",
+    "next-intl": "^4.6.1",
+    "nodemailer": "^7.0.7",
+    "pg": "^8.20.0",
+    "react": "^19.2.3",
+    "react-dom": "^19.2.3",
+    "zod": "^3.23.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.11.0",
+    "@types/pg": "^8.11.0",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "eslint": "^9.0.0",
+    "eslint-config-next": "^16.1.1",
+    "prisma": "^6.1.0",
+    "typescript": "^5.3.0"
+  },
+  "engines": {
+    "node": ">=18.0.0"
+  }
+}