fix: emit tool.started immediately on function_call and add duration to tool.completed (#647)

- Emit tool.started on response.output_item.added instead of .done
- Track startedAt timestamp for each tool call to calculate duration
- Include duration (2 decimal places) and error status in tool.completed
- Fix response.completed fallback to emit tool.started before tool.completed
- Update website license from MIT to BSL-1.1

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

packages/website/src/i18n/en.ts

@@ -101,7 +101,7 @@ export default {
   },
   footer: {
     description: 'Self-hosted AI chat dashboard for Hermes Agent.',
-    license: 'MIT License',
+    license: 'BSL-1.1 License',
     madeWith: 'Built with Vue 3, Naive UI, and TypeScript.',
   },
   docs: {

packages/website/src/i18n/zh.ts

@@ -101,7 +101,7 @@ export default {
   },
   footer: {
     description: 'Hermes Agent 的自托管 AI 聊天仪表板。',
-    license: 'MIT 开源协议',
+    license: 'BSL-1.1 开源协议',
     madeWith: '使用 Vue 3、Naive UI 和 TypeScript 构建。',
   },
   docs: {