feat: upgrade claude-agent-sdk to 0.2.38 and adapt to new SDK types (#113)

* feat: upgrade claude-agent-sdk to 0.2.38 and adapt to new SDK types

- Bump @anthropic-ai/claude-agent-sdk from 0.1.x to 0.2.38 (both root and mcp-server)
- Bump zod from 3.x to 4.x (SDK peer dependency)
- Add allowDangerouslySkipPermissions to query options (required for bypassPermissions)
- Suppress new SDK message types (tool_progress, tool_use_summary, auth_status)
- Use structured error field on assistant messages instead of text-sniffing
- Add stop_reason to result message handling for diagnostics
- Add SDKAssistantMessageError type matching SDK's string literal union

* chore: remove CLAUDE_CODE_MAX_OUTPUT_TOKENS from all config and docs

package.json

@@ -11,7 +11,7 @@
     "temporal:query": "node dist/temporal/query.js"
   },
   "dependencies": {
-    "@anthropic-ai/claude-agent-sdk": "^0.1.0",
+    "@anthropic-ai/claude-agent-sdk": "^0.2.38",
     "@temporalio/activity": "^1.11.0",
     "@temporalio/client": "^1.11.0",
     "@temporalio/worker": "^1.11.0",
@@ -24,7 +24,7 @@
     "figlet": "^1.9.3",
     "gradient-string": "^3.0.0",
     "js-yaml": "^4.1.0",
-    "zod": "^3.22.4",
+    "zod": "^4.3.6",
     "zx": "^8.0.0"
   },
   "devDependencies": {