W3: lib-knowledge-ui scaffold + collections

@crema/knowledge-ui: headless KB management components over an injected
KnowledgeTransport. This commit: package + types (full API surface) +
transport interface + MockKnowledgeTransport (fixtures for every surface) +
_internal (cn, badges, formatters) + components-collections (CollectionList
grouped by owner, CollectionCard, CollectionForm with org/read-only states) +
demo + README + tsconfig.check.json. Typechecks clean.

Co-Authored-By: Claude Fable 5 (build) <noreply@anthropic.com>

package.json

@@ -0,0 +1,21 @@
+{
+  "name": "@crema/knowledge-ui",
+  "version": "0.0.1",
+  "private": true,
+  "description": "Knowledge-base management components (collections, object viewer, claims review, export) for the Crema design system. Headless: ships shapes + pure UI, the app injects a KnowledgeTransport.",
+  "type": "module",
+  "main": "./src/index.tsx",
+  "types": "./src/index.tsx",
+  "exports": {
+    ".": "./src/index.tsx"
+  },
+  "files": [
+    "src"
+  ],
+  "sideEffects": false,
+  "peerDependencies": {
+    "lucide-react": "^1.8.0",
+    "react": "^19.2.4",
+    "react-dom": "^19.2.4"
+  }
+}