Add configurable sidebar thread preview count

[Marve10s]

What changed

• Adds a configurable visible-thread count for the sidebar, clamped to 2-10.
• Replaces the old radio-style count picker with a compact - / numeric input / + control.
• Persists the setting in client settings and migrates legacy values.

Notes

• The input is text-based so the browser spinner arrows do not appear.
• The control is inside the sidebar menu, so key handling is stopped at capture phase to keep typed digits editable.
• This branch also still includes the dev bootstrap fix in apps/web/vite.config.ts that was needed to verify the app locally.

Validation

• bun fmt
• bun lint
• bun typecheck

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Note

Low Risk
Low risk UI/settings change that replaces a hardcoded sidebar thread preview limit with a validated client setting; main risk is minor UX regressions in the new input control and settings migration edge cases.

Overview
Replaces the sidebar’s hardcoded thread preview limit with a new client setting, sidebarThreadPreviewCount (default 6, clamped to 2–10), and uses it wherever the sidebar computes preview/overflowed thread lists.

Updates the sidebar options menu (ProjectSortMenu) to include a compact - / numeric input / + control for changing this value, persisting via updateSettings, and adds schema + legacy migration support (with tests) plus inclusion in the settings “restore defaults” dirty-check list.

^{Reviewed by Cursor Bugbot for commit f120de9. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add configurable sidebar thread preview count per project

• Replaces the hardcoded thread preview limit of 6 with a user-configurable sidebarThreadPreviewCount setting (range 2–10, default 6) stored in client settings.
• Adds increment/decrement controls and a numeric input to the sidebar options menu (ProjectSortMenu) with input validation and clamping via a new clampSidebarThreadPreviewCount helper.
• Persists changes via updateSettings and migrates valid legacy sidebarThreadPreviewCount values during settings migration; invalid legacy values are ignored.
• The settings restore flow now includes sidebarThreadPreviewCount in dirty-state detection and the reset confirmation list.

^{Macroscope summarized d81caf8.}

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[Marve10s]

Why ? When working on more than 3+ projects with default thread number, I need to scroll. Instead, I'd prefer to have less threads because I don't need 6 by default while working on multiple stuff.
https://github.com/user-attachments/assets/7645ee08-478c-44fc-8fbb-4157a4821bac

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit afe3877. Configure here.}

[macroscopeapp]

Approvability

Verdict: Needs human review

The sidebar thread preview count feature itself is straightforward, but there is an unresolved high-severity bug comment identifying that the vite.config.ts changes may cause startup crashes when VITE_WS_URL is not configured. This unrelated change bundled into the PR requires human attention.

^{You can customize Macroscope's approvability policy. Learn more.}

[Marve10s]

Approvability

Verdict: Needs human review

The sidebar thread preview count feature itself is straightforward, but there is an unresolved high-severity bug comment identifying that the vite.config.ts changes may cause startup crashes when VITE_WS_URL is not configured. This unrelated change bundled into the PR requires human attention.

You can customize Macroscope's approvability policy. Learn more.

fyi Added by accident, PR is no longer contains Vite config changes