feat(#21): implement ollama integration

- Add Ollama client library (ollama npm package)
- Create LlmService for chat completion and embeddings
- Support streaming responses via Server-Sent Events
- Add configuration via env vars (OLLAMA_HOST, OLLAMA_TIMEOUT)
- Create endpoints: GET /llm/health, GET /llm/models, POST /llm/chat, POST /llm/embed
- Replace old OllamaModule with new LlmModule
- Add comprehensive tests with >85% coverage

Closes #21

pnpm-lock.yaml

@@ -147,6 +147,15 @@ importers:
 
   apps/web:
     dependencies:
+      '@dnd-kit/core':
+        specifier: ^6.3.1
+        version: 6.3.1([email protected]([email protected]))([email protected])
+      '@dnd-kit/sortable':
+        specifier: ^10.0.0
+        version: 10.0.0(@dnd-kit/[email protected]([email protected]([email protected]))([email protected]))([email protected])
+      '@dnd-kit/utilities':
+        specifier: ^3.2.2
+        version: 3.2.2([email protected])
       '@mosaic/shared':
         specifier: workspace:*
         version: link:../../packages/shared
@@ -586,6 +595,28 @@ packages:
     resolution: {integrity: sha512-Vd/9EVDiu6PPJt9yAh6roZP6El1xHrdvIVGjyBsHR0RYwNHgL7FJPyIIW4fANJNG6FtyZfvlRPpFI4ZM/lubvw==}
     engines: {node: '>=18'}
 
+  '@dnd-kit/[email protected]':
+    resolution: {integrity: sha512-2P+YgaXF+gRsIihwwY1gCsQSYnu9Zyj2py8kY5fFvUM1qm2WA2u639R6YNVfU4GWr+ZM5mqEsfHZZLoRONbemw==}
+    peerDependencies:
+      react: '>=16.8.0'
+
+  '@dnd-kit/[email protected]':
+    resolution: {integrity: sha512-xkGBRQQab4RLwgXxoqETICr6S5JlogafbhNsidmrkVv2YRs5MLwpjoF2qpiGjQt8S9AoxtIV603s0GIUpY5eYQ==}
+    peerDependencies:
+      react: '>=16.8.0'
+      react-dom: '>=16.8.0'
+
+  '@dnd-kit/[email protected]':
+    resolution: {integrity: sha512-+xqhmIIzvAYMGfBYYnbKuNicfSsk4RksY2XdmJhT+HAC01nix6fHCztU68jooFiMUB01Ky3F0FyOvhG/BZrWkg==}
+    peerDependencies:
+      '@dnd-kit/core': ^6.3.0
+      react: '>=16.8.0'
+
+  '@dnd-kit/[email protected]':
+    resolution: {integrity: sha512-+MKAJEOfaBe5SmV6t34p80MMKhjvUz0vRrvVJbPT0WElzaOJ/1xs+D+KDv+tD/NE5ujfrChEcshd4fLn0wpiqg==}
+    peerDependencies:
+      react: '>=16.8.0'
+
   '@emnapi/[email protected]':
     resolution: {integrity: sha512-mehfKSMWjjNol8659Z8KxEMrdSJDDot5SXMq00dM8BN4o+CLNXQ0xH2V7EchNHV4RmbZLmmPdEaXZc5H2FXmDg==}
 
@@ -4760,6 +4791,31 @@ snapshots:
 
   '@csstools/[email protected]': {}
 
+  '@dnd-kit/[email protected]([email protected])':
+    dependencies:
+      react: 19.2.4
+      tslib: 2.8.1
+
+  '@dnd-kit/[email protected]([email protected]([email protected]))([email protected])':
+    dependencies:
+      '@dnd-kit/accessibility': 3.1.1([email protected])
+      '@dnd-kit/utilities': 3.2.2([email protected])
+      react: 19.2.4
+      react-dom: 19.2.4([email protected])
+      tslib: 2.8.1
+
+  '@dnd-kit/[email protected](@dnd-kit/[email protected]([email protected]([email protected]))([email protected]))([email protected])':
+    dependencies:
+      '@dnd-kit/core': 6.3.1([email protected]([email protected]))([email protected])
+      '@dnd-kit/utilities': 3.2.2([email protected])
+      react: 19.2.4
+      tslib: 2.8.1
+
+  '@dnd-kit/[email protected]([email protected])':
+    dependencies:
+      react: 19.2.4
+      tslib: 2.8.1
+
   '@emnapi/[email protected]':
     dependencies:
       tslib: 2.8.1