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

Medium Risk
Adds a new persisted client setting and updates sidebar rendering/menu logic to use it, so regressions could affect settings deserialization or thread list visibility across web/desktop.

Overview
Adds a configurable sidebar thread preview limit. The sidebar no longer uses a hardcoded 6 thread preview cap; it now reads/writes a persisted sidebarThreadPreviewCount setting and clamps values to 2–10.

Updates the sidebar options menu to include a compact - / numeric input / + control for this value (with key handling to avoid menu shortcuts interfering), and updates the settings restore-defaults prompt to include Visible threads when changed. Tests for desktop persistence and the web localApi bridge/storage paths are updated to include the new setting.

^{Reviewed by Cursor Bugbot for commit 2e8255d. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add configurable sidebar thread preview count per project

• Adds a sidebarThreadPreviewCount setting (default: 6, clamped between min and max) to ClientSettingsSchema in settings.ts.
• Replaces the hardcoded THREAD_PREVIEW_LIMIT in Sidebar.tsx with the new user setting, so collapsed project thread lists reflect the stored preference.
• Adds a 'Visible threads' control to the sidebar options menu (ProjectSortMenu) with increment/decrement buttons and a numeric input that clamps and persists changes immediately.
• Includes sidebarThreadPreviewCount in the restore-defaults flow in SettingsPanels.tsx so it appears in the confirmation message when it differs from the default.

^{Macroscope summarized 2e8255d.}

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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: Approved

This PR adds a user-configurable setting for sidebar thread preview count (2-10), replacing a hardcoded value. The changes are self-contained UI preferences with proper validation, affecting only display count in the sidebar with no security or runtime behavior implications beyond the intended feature.

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[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.

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