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>

README.md

@@ -0,0 +1,50 @@
+# `@gsc/web-kit`
+
+App skeleton for GSC Next.js frontends. Wraps `@limitless/ui` primitives into a pre-configured layout + auth + data/forms/feedback stack so apps just write their domain pages.
+
+See the implementation plan in the parent repo for the full module map. This is a `file:` dep consumed by every GSC frontend.
+
+## Install (in a consumer app)
+
+```jsonc
+// package.json
+{
+  "dependencies": {
+    "@gsc/web-kit": "file:../../../templates/gsc-web-kit"
+  }
+}
+```
+
+## Layered architecture
+
+```
+your app
+  └── @gsc/web-kit         ← this package (layout, auth, data, forms…)
+        └── @limitless/ui   ← Bootstrap-flavoured primitives
+              └── bootstrap
+```
+
+## Sub-exports
+
+```ts
+import "@gsc/web-kit/css";              // CSS bundle (layout-3 + JetBrains Mono)
+import { AppLayout } from "@gsc/web-kit/layout";
+import { createAuth } from "@gsc/web-kit/auth/server";
+import { fetchShellConfig } from "@gsc/web-kit/shell/server";
+import { EntityList } from "@gsc/web-kit/data";
+import { Form, TextField } from "@gsc/web-kit/forms";
+import { useToast } from "@gsc/web-kit/feedback";
+import { Breadcrumbs } from "@gsc/web-kit/navigation";
+import { createApiClient } from "@gsc/web-kit/api";
+import { formatCurrency } from "@gsc/web-kit/utils";
+```
+
+## Phases
+
+| Phase | Scope | Status |
+|---|---|---|
+| 1 | Package scaffold + CSS bundle + sub-export stubs | **in progress** |
+| 2 | layout · auth · shell — usable end-to-end with shell-api | planned |
+| 3 | data · forms — EntityList, Form, DefineAction | planned |
+| 4 | feedback · navigation · api · utils | planned |
+| 5 | Roll out to gscCRM / gscChronos / gscAdmin / gscPortal | planned |