Enhance provider system with dynamic package resolution and improved logging

- Add npm registry lookup for AI SDK packages with fallback support
- Enhance error logging with cause information
- Add timing deltas to log output for performance monitoring

🤖 Generated with [opencode](https://opencode.ai)

Co-Authored-By: opencode <noreply@opencode.ai>

opencode.json

@@ -0,0 +1,16 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "provider": {
+    "@openrouter/ai-sdk-provider": {
+      "name": "OpenRouter",
+      "options": {
+        "apiKey": "sk-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+      },
+      "models": {
+        "anthropic/claude-3.5-sonnet": {
+          "name": "claude-3.5-sonnet"
+        }
+      }
+    }
+  }
+}