feat: @gsc/web-kit v0.1.0 — Phase 1 scaffold

The kit. Drop into any GSC Next.js frontend; everything that's not
domain content lives here. Wraps @limitless/ui primitives with the
app-shaped patterns we keep reimplementing: layout, auth, data
display, forms, feedback, navigation.

Phase 1 ships the package skeleton:

- package.json with 14 sub-exports (./layout · ./auth · ./auth/server
  · ./auth/middleware · ./shell · ./shell/server · ./data · ./forms ·
  ./feedback · ./navigation · ./api · ./utils + the root and ./css).
- Empty module stubs so the import map resolves while later phases
  fill in real surface area.
- Canonical CSS bundle at @gsc/web-kit/css — all.min.css +
  sidebar-overrides.css + the seven layout-3 background images,
  copied from chronos and committed in one place so no app has to
  ship the 1MB sidecar on its own anymore.
- tsc-based build + a postbuild script that mirrors @limitless/ui:
  emits .js + .d.ts, copies styles/, rewrites bare ESM imports to
  include .js extensions.
- Peer deps on next, react, react-dom, bootstrap.
- Hard deps on @limitless/ui (file: dep), next-auth, next-intl, zod.

Build verified: tsc emits, all 14 export paths resolve under dist/.
No functional code yet — Phase 2 lands AppLayout / createAuth /
fetchShellConfig and the gscCRM pilot cuts over.

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

package.json

@@ -0,0 +1,51 @@
+{
+  "name": "@gsc/web-kit",
+  "version": "0.1.0",
+  "description": "GSC web app skeleton — layout, auth, data, forms, feedback, navigation. Built on @limitless/ui. Drop into a Next.js app and just write pages.",
+  "license": "MIT",
+  "type": "module",
+  "main": "dist/index.js",
+  "module": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "exports": {
+    ".":            { "import": "./dist/index.js",            "types": "./dist/index.d.ts" },
+    "./css":        "./dist/styles/index.css",
+    "./layout":     { "import": "./dist/layout/index.js",     "types": "./dist/layout/index.d.ts" },
+    "./auth":       { "import": "./dist/auth/index.js",       "types": "./dist/auth/index.d.ts" },
+    "./auth/server":{ "import": "./dist/auth/server.js",      "types": "./dist/auth/server.d.ts" },
+    "./auth/middleware": { "import": "./dist/auth/middleware.js", "types": "./dist/auth/middleware.d.ts" },
+    "./shell":      { "import": "./dist/shell/index.js",      "types": "./dist/shell/index.d.ts" },
+    "./shell/server":{ "import": "./dist/shell/server.js",    "types": "./dist/shell/server.d.ts" },
+    "./data":       { "import": "./dist/data/index.js",       "types": "./dist/data/index.d.ts" },
+    "./forms":      { "import": "./dist/forms/index.js",      "types": "./dist/forms/index.d.ts" },
+    "./feedback":   { "import": "./dist/feedback/index.js",   "types": "./dist/feedback/index.d.ts" },
+    "./navigation": { "import": "./dist/navigation/index.js", "types": "./dist/navigation/index.d.ts" },
+    "./api":        { "import": "./dist/api/index.js",        "types": "./dist/api/index.d.ts" },
+    "./utils":      { "import": "./dist/utils/index.js",      "types": "./dist/utils/index.d.ts" }
+  },
+  "sideEffects": [
+    "**/*.css"
+  ],
+  "scripts": {
+    "build": "tsc -p tsconfig.json --noEmit false",
+    "postbuild": "node ./scripts/postbuild.cjs",
+    "typecheck": "tsc -p tsconfig.json --noEmit"
+  },
+  "dependencies": {
+    "@limitless/ui": "file:../limitless-ui",
+    "next-auth": "^5.0.0-beta.25",
+    "next-intl": "^4.6.1",
+    "zod": "^3.23.0"
+  },
+  "peerDependencies": {
+    "bootstrap": "^5.3.3",
+    "next": ">=15.0.0",
+    "react": "^18.2.0 || ^19.0.0",
+    "react-dom": "^18.2.0 || ^19.0.0"
+  },
+  "devDependencies": {
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "typescript": "^5.4.0"
+  }
+}