v0.3.0

What's Changed

• W-480: guard settle-timeout recovery abort race by @AndPuQing in #12
• W-470: preserve thinking deltas with omitted fields by @AndPuQing in #6
• feat(mcp): session-scoped runtime-register wiring (W-483) by @AndPuQing in #13
• MCP集成验收：fake server list/call、并发隔离、异常清理、三平台 (W-484) by @AndPuQing in #14
• chore(release): tune profile for smaller binaries (W-485) by @AndPuQing in #15
• chore(release): bump to 0.3.0 (W-486) by @AndPuQing in #16

Full Changelog: v0.2.1...v0.3.0