feat: extract review-workspace slice into @citation-evidence/work (CWORK-WP-0001)

Establishes citation-work as the standalone home of the review workspace,
migrated out of the citation-evidence umbrella app.

- Package/tooling scaffold: package.json, tsconfig, vite/vitest/eslint configs
  with eslint-plugin-boundaries enforcing engine/anchor/source-only imports
- Providers/hooks: EngineProvider, SessionProvider + use* hooks (T02)
- Panes: CollectionList, ViewerShell, EvidenceSidebar (T03/T04/T05)
- Capture/edit: InlineCaptureForm, EvidenceFormBody; UploadDropzone owned here
- ReviewShell: repo-owned three-pane layout with an upload slot seam
- Tests: CollectionList, InlineCaptureForm capture flow, EvidenceSidebar
  export/edit/activation (11 tests, all green)
- Anchor consumed as @citation-evidence/evidence-anchor package; @source kept
  on the umbrella facade for its local viewer-url policy
- Docs (README/SCOPE) refreshed; deferred gaps recorded

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

eslint.config.js

@@ -0,0 +1,71 @@
+import js from "@eslint/js";
+import tseslint from "typescript-eslint";
+import boundaries from "eslint-plugin-boundaries";
+import importPlugin from "eslint-plugin-import";
+import globals from "globals";
+import { fileURLToPath } from "node:url";
+import { dirname, resolve } from "node:path";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const engineSrc = resolve(__dirname, "../citation-engine/src");
+const anchorSrc = resolve(__dirname, "../evidence-anchor/src");
+const sourceSrc = resolve(__dirname, "../citation-evidence/src/source");
+
+export default tseslint.config(
+  {
+    ignores: ["dist/", "node_modules/", "coverage/", "**/*.d.ts"],
+  },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    files: ["src/**/*.{ts,tsx}"],
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: "module",
+      globals: { ...globals.browser, ...globals.node },
+    },
+    plugins: {
+      boundaries,
+      import: importPlugin,
+    },
+    settings: {
+      "import/resolver": {
+        typescript: { project: "./tsconfig.json" },
+      },
+      "boundaries/elements": [
+        { type: "shared", pattern: `${engineSrc}/shared/**` },
+        { type: "engine", pattern: `${engineSrc}/engine/**` },
+        { type: "anchor", pattern: `${anchorSrc}/**` },
+        { type: "source", pattern: `${sourceSrc}/**` },
+        { type: "work", pattern: "src/work/**" },
+      ],
+    },
+    rules: {
+      "boundaries/element-types": [
+        2,
+        {
+          default: "disallow",
+          rules: [
+            { from: "shared", allow: [] },
+            { from: "engine", allow: ["shared"] },
+            { from: "anchor", allow: ["shared", "engine"] },
+            { from: "source", allow: ["shared", "engine"] },
+            { from: "work", allow: ["shared", "engine", "anchor", "source", "work"] },
+          ],
+        },
+      ],
+      "no-restricted-imports": [
+        2,
+        {
+          patterns: [
+            "@binder/*",
+            "@app/*",
+            "../citation-evidence/src/app/*",
+            "../citation-evidence/src/binder/*",
+            "../citation-evidence/src/work/*",
+          ],
+        },
+      ],
+    },
+  },
+);