Core Changes

• Fix incorrect 'Ready in' time for next start: #88589
• feat: server action logging: #88277
• Log browser error and warnings in terminal: #88352

Misc Changes

• Turbopack: avoid removing cells for erroring tasks: #88305
• [ci] Use native concurrency feature in build-and-test: #87287
• doc: add details of mcp client integration: #88543
• Turbopack: unflake unit test: #88620
• Turbopack: snapshot the ModuleGraph to avoid (eventual) inconsistent graphs: #88340
• Turbopack: Consistency for compute_async_module_info: #88409
• Turbopack: follow tracing spans through aggregation update queue: #88410
• Turbopack: avoid chunk_item_id task and use selective cell access instead: #88411
• Turbopack: MappedReadRef should be Send and Sync: #88558
• Turbopack: selective read for module_chunk_groups in ChunkGroupInfo: #88559
• Turbopack: use selective reads for merged modules: #88560
• Turbopack: add caching to chunking: #88561

Credits

Huge thanks to @sokra, @eps1lon, @timneutkens, and @huozhi for helping!