Improve search sidebar and zoom controls

[GordonBeeming]

Summary

• Move workspace content search results into the main sidebar body and widen the resizable sidebar limit.
• Speed up workspace content search traversal by avoiding repeated full-tree rescans.
• Remove the old upper zoom caps while keeping lower guards that prevent invalid app/editor sizing.

Test plan

• npm test -- --run src/App.test.tsx --testNamePattern "zooms the editor and app"
• cargo test ui_state_is_sanitized_deduplicated_and_persisted
• ./run-tests.sh

Closes #31

[gemini-code-assist]

Code Review

This pull request updates the UI limits for editor font size, app zoom, and sidebar width, allowing smaller font sizes and zoom levels, and a wider sidebar. It also refactors the content search UI to toggle visibility with the file tree and adds corresponding tests. In the backend, the workspace search was refactored to use a queue-based BFS traversal. However, a review comment points out a performance bottleneck in this traversal, where creating a new WalkBuilder for each subdirectory causes redundant .gitignore parsing, and suggests refactoring to a single recursive walk.

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[chatgpt-codex-connector]

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[Copilot]

Pull request overview

This PR improves the workspace content search UX by moving content search results into the primary sidebar scroll area (replacing the cramped “above the tree” layout), increasing the sidebar’s maximum resizable width, and improving the Rust fallback traversal used for content search by avoiding repeated full-tree rescans. It also removes the previous upper caps for editor/app zoom while keeping minimum guards.

Changes:

• Sidebar content search results now occupy the main sidebar body area and hide the file tree while active.
• Sidebar maximum width cap increased (520px → 1040px) and persistence/sanitization updated accordingly.
• Workspace content search traversal in Rust now walks directories incrementally (queue-based) instead of rescanning the root repeatedly with increasing depth.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/styles.css	Adds a sidebar-specific search-results modifier to allow results to flex and scroll within the sidebar body.
src/App.tsx	Moves content search results into the main sidebar area, hides the tree during content search, raises sidebar width cap, and removes upper zoom caps while keeping minimum sanitization.
src/App.test.tsx	Updates/extends UI tests to assert the tree is hidden during content search and validates new zoom/resize behavior.
src-tauri/src/workspace.rs	Reworks content search traversal to avoid repeated rescans by iterating directories via a queue with depth-1 walkers.
src-tauri/src/lib.rs	Updates view/workspace UI state sanitization/constants for new min zooms and sidebar width cap; adjusts tests for removed upper clamps.
src-tauri/Cargo.lock	Bumps memmap2 patch version.
scripts/smoke-test.mjs	Updates smoke scenario interactions to open content search results and validate Escape-to-clear/close behavior.

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