chore(master): release 0.5.1

[largeoliu]

🤖 I have created a release beep boop

0.5.1 (2026-05-10)

Bug Fixes

• app: 提升单元测试覆盖率至 100% (#102) (b2bc82d)
• install: add -UseBasicParsing to Invoke-WebRequest and improve Headers[Location] access (#106) (058c443)
• install: add api.github.com fallback for version detection in install.sh (#110) (8e730b4)
• install: convert OSArchitecture enum to string before switch comparison (#111) (73c310c)
• install: prevent PowerShell window close on errors via iex (#109) (252e7ef)
• sprints: 使用动态日期替代硬编码日期修复 TestEnrichSprintStatus (#107) (df902ea)
• support 'sprints' field in resolveSprintID response (#91) (99f9bf9)
• tracker default_status type mismatch causes decode failure (#93) (b177d00)
• Windows PowerShell 5.1 compatibility for install.ps1 (#108) (0d94f8a)

Performance Improvements

• ci: parallelize test shards and reduce benchmark time (#96) (e40b7ed)
• reduce redundant JSON marshal/unmarshal and URL parsing (#90) (cc50d27)

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