chore(main): release 4.7.0

[github-actions]

🤖 I have created a release beep boop

4.7.0 (2025-09-16)

Features

• chat: switch to treesitter based chat parsing (#1394) (ba364fe)
• diff: add experimental unified diff support, refactor handling (#1392) (9fdf895)
• diff: apply all code blocks for a file at once when showing diff (#1409) (a88874e)
• diff: use diff-match-patch for better diff handling (#1407) (35ad8ff)
• health: require markdown parser and copilotchat query (#1401) (f49df19)

Bug Fixes

• chat: automatically start treesitter if not started (#1410) (00d0fb3)
• client: correct history handling for headless ask (#1416) (d5ea51d), closes #1415
• provider: safely call curl.post for model policy (#1419) (2279dbe)
• ui: handle missing filename in chat block header (#1406) (5c3a558)
• ui: improve help rendering and treesitter usage (#1411) (559e754)
• ui: preserve extra fields in chat messages (#1399) (f2f523f)

Performance Improvements

• chat: optimize message storage and access (#1403) (1041ad0)
• chat: simplify last line/column calculation (#1402) (4a45e69)
• core: do not require calling setup(), add lazy initialization (#1413) (c15f65e)

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[github-actions]

🤖 Created releases:

• v4.7.0

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