Support two-digit sidebar thread jumps

[svenbuild]

Summary

• Allow sidebar thread jump shortcuts to target visible threads 10-99 by pressing a second digit shortly after the first shortcut.
• Extend sidebar shortcut hints after Ctrl+9 with labels like Ctrl+10 and Ctrl+15.
• Keep existing thread.jump.1 through thread.jump.9 keybinding commands unchanged.

Why

This keeps the existing shortcut model but makes it work for longer thread lists without adding new keybinding commands.

Interaction notes

• Ctrl+1 still jumps to thread 1 after the short timeout.
• Ctrl+1, then 5 within the timeout jumps to visible thread 15.
• The second digit is intentionally accepted while the modifier is still held, so users can type a continuous sequence like Ctrl+1, 5 without releasing Ctrl.
• Sidebar hints now show the synthesized two-digit labels for visible threads after 9.

Verification

• bun run test src/components/Sidebar.logic.test.ts from apps/web
• bun run typecheck --filter=@t3tools/web
• git diff --check

Note

Support two-digit keyboard thread jumps in sidebar navigation

• Extends sidebar thread-jump shortcuts to support indices 10–99 by introducing a 250ms pending-digit window after a first-digit keypress.
• If a second digit is pressed within the window, the sidebar navigates to the combined two-digit thread index; otherwise it falls back to the single-digit jump.
• Updates buildThreadJumpLabelMap in Sidebar.tsx to generate composed shortcut labels (first-digit label + second digit character) for threads 10–99.
• Pending state is cleared on navigation, route changes, traversal commands, and non-digit keypresses.
• Behavioral Change: single-digit jumps (1–9) now navigate after a 250ms delay instead of immediately, to allow time for a second digit.

^{Macroscope summarized c21f44f.}

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Note

Medium Risk
Updates the global sidebar keydown handler to add timed two-digit jump sequences and delays existing single-digit jumps by 250ms, which could subtly affect keyboard navigation behavior and event handling.

Overview
Adds two-digit sidebar thread-jump navigation (10–99) by capturing a second digit shortly after thread.jump.1–thread.jump.9 is triggered and computing the target visible thread index.

Updates buildThreadJumpLabelMap to synthesize and display shortcut hint labels for visible threads beyond 9 (e.g., Ctrl+10, Ctrl+15), and introduces pending-jump state/timeout management that is cleared on navigation and route changes.

^{Reviewed by Cursor Bugbot for commit c21f44f. Bugbot is set up for automated code reviews on this repo. Configure here.}

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[cursor]

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

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^{Reviewed by Cursor Bugbot for commit 90fcd63. Configure here.}

[macroscopeapp]

Approvability

Verdict: Needs human review

This PR introduces new user-facing behavior (two-digit thread jump shortcuts) and modifies existing behavior by adding a 250ms delay to single-digit jumps while awaiting a potential second digit. New features with runtime behavior changes warrant human review.

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

[chatgpt-codex-connector]

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