fix: ChatBubble crash and DeepSeek API compatibility

- Fix ChatBubble to handle non-string content with String() wrapper
- Fix API route to use generateText for non-streaming requests
- Add @ai-sdk/openai-compatible for non-OpenAI providers (DeepSeek, etc.)
- Use Chat Completions API instead of Responses API for compatible providers
- Update ChatBubble tests and fix component exports to kebab-case
- Remove stale PascalCase ChatBubble.tsx file

_bmad/bmm/workflows/excalidraw-diagrams/_shared/excalidraw-library.json

@@ -0,0 +1,90 @@
+{
+  "type": "excalidrawlib",
+  "version": 2,
+  "library": [
+    {
+      "id": "start-end-circle",
+      "status": "published",
+      "elements": [
+        {
+          "type": "ellipse",
+          "width": 120,
+          "height": 60,
+          "strokeColor": "#1976d2",
+          "backgroundColor": "#e3f2fd",
+          "fillStyle": "solid",
+          "strokeWidth": 2,
+          "roughness": 0
+        }
+      ]
+    },
+    {
+      "id": "process-rectangle",
+      "status": "published",
+      "elements": [
+        {
+          "type": "rectangle",
+          "width": 160,
+          "height": 80,
+          "strokeColor": "#1976d2",
+          "backgroundColor": "#e3f2fd",
+          "fillStyle": "solid",
+          "strokeWidth": 2,
+          "roughness": 0,
+          "roundness": {
+            "type": 3,
+            "value": 8
+          }
+        }
+      ]
+    },
+    {
+      "id": "decision-diamond",
+      "status": "published",
+      "elements": [
+        {
+          "type": "diamond",
+          "width": 140,
+          "height": 100,
+          "strokeColor": "#f57c00",
+          "backgroundColor": "#fff3e0",
+          "fillStyle": "solid",
+          "strokeWidth": 2,
+          "roughness": 0
+        }
+      ]
+    },
+    {
+      "id": "data-store",
+      "status": "published",
+      "elements": [
+        {
+          "type": "rectangle",
+          "width": 140,
+          "height": 80,
+          "strokeColor": "#388e3c",
+          "backgroundColor": "#e8f5e9",
+          "fillStyle": "solid",
+          "strokeWidth": 2,
+          "roughness": 0
+        }
+      ]
+    },
+    {
+      "id": "external-entity",
+      "status": "published",
+      "elements": [
+        {
+          "type": "rectangle",
+          "width": 120,
+          "height": 80,
+          "strokeColor": "#7b1fa2",
+          "backgroundColor": "#f3e5f5",
+          "fillStyle": "solid",
+          "strokeWidth": 3,
+          "roughness": 0
+        }
+      ]
+    }
+  ]
+}