dayuan.jiang
0dd7b2383e
WIP: Cloudflare Worker deployment setup
2025-12-08 10:31:10 +09:00
Dayuan Jiang
150eb1ff63
chore: add Biome for formatting and linting ( #116 )
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- Add Biome as formatter and linter (replaces Prettier)
- Configure Husky + lint-staged for pre-commit hooks
- Add VS Code settings for format on save
- Ignore components/ui/ (shadcn generated code)
- Remove semicolons, use 4-space indent
- Reformat all files to new style
2025-12-06 12:46:40 +09:00
Dayuan Jiang
ed29e32ba3
feat: restore Langfuse observability integration ( #103 )
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- Add lib/langfuse.ts with client, trace input/output, telemetry config
- Add instrumentation.ts for OpenTelemetry setup with Langfuse span processor
- Add /api/log-save endpoint for logging diagram saves
- Add /api/log-feedback endpoint for thumbs up/down feedback
- Update chat route with sessionId tracking and telemetry
- Add feedback buttons (thumbs up/down) to chat messages
- Add sessionId tracking throughout the app
- Update env.example with Langfuse configuration
- Add @langfuse/client, @langfuse/otel, @langfuse/tracing, @opentelemetry/sdk-trace-node
2025-12-05 21:15:02 +09:00
dayuan.jiang
ff6f130f8a
refactor: remove Langfuse observability integration
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- Delete lib/langfuse.ts, instrumentation.ts
- Remove API routes: log-save, log-feedback
- Remove feedback buttons (thumbs up/down) from chat
- Remove sessionId tracking throughout codebase
- Remove @langfuse/*, @opentelemetry dependencies
- Clean up env.example
2025-12-05 01:30:02 +09:00
Dayuan Jiang
9d9613a8d1
feat: add trace-level input/output to Langfuse observability ( #69 )
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* feat: add trace-level input/output to Langfuse observability
- Add @langfuse/client and @langfuse/tracing dependencies
- Wrap POST handler with observe() for proper tracing
- Use updateActiveTrace() to set trace input, output, sessionId, userId
- Filter Next.js HTTP spans in shouldExportSpan so AI SDK spans become root traces
- Enable recordInputs/recordOutputs in experimental_telemetry
* refactor: extract Langfuse logic to separate lib/langfuse.ts module
2025-12-04 11:24:26 +09:00
Dayuan Jiang
fa1b02ad78
feat: integrate Langfuse for LLM observability ( #66 )
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* feat: integrate Langfuse for LLM observability
- Add instrumentation.ts with Langfuse OpenTelemetry exporter
- Enable experimental telemetry on streamText calls
- Add instrumentationHook to Next.js config
- Install required dependencies (@vercel/otel, langfuse-vercel, etc.)
* feat: add optional Langfuse observability integration
- Add session tracking with unique sessionId per conversation
- Add user tracking via IP address (x-forwarded-for header)
- Make telemetry conditional - only enabled if LANGFUSE_PUBLIC_KEY is set
- Add environment variable validation in instrumentation.ts
- Add sessionId validation (type check + 200 char limit)
- Update env.example with Langfuse configuration docs
- Remove unused langfuse-vercel and @vercel/otel packages
* fix: remove deprecated instrumentationHook (enabled by default in Next.js 15)
2025-12-04 00:23:09 +09:00
