feat: add cursor styles, click ripples, and GPUI frame controls

[richiemcilroy]

Adds macOS, Tahoe, Windows, and circle cursor controls to both desktop editors, with configurable click ripples in the shared renderer and backward-compatible project settings.

Adds GPUI window/device frame controls, fixes Space-key playback when controls have focus, and lets the renderer CLI capture a chosen timeline position.

Validated Rust formatting, scoped Biome checks, desktop TypeScript, and native compilation of cap-cursor-info, cap-project, and cap-rendering using the GPUI workspace. Added four click-ripple regression tests covering cursor freeze, timing, visibility, and bounded instances. Native tests and the existing Tauri binding-export test could not complete locally because executable startup stalled; those jobs were stopped. Native Windows/Linux interaction testing has not been performed. Remaining CI jobs are still running.

Greptile Summary

The PR adds selectable cursor styles, configurable click ripples, GPUI frame controls, improved focused-control playback handling, and timeline-position capture support.

• Extends the shared project configuration and desktop controls with backward-compatible cursor and ripple settings.
• Adds renderer support and regression coverage for bounded, correctly timed click ripples that remain aligned with frozen cursors.
• Adds native GPUI frame selection, theme, URL, and title controls.
• Extends the renderer CLI to capture a selected timeline position.

Confidence Score: 5/5

The PR appears safe to merge because no blocking failure remains in the previously reviewed areas.

No blocking failure remains.

Important Files Changed

Filename	Overview
crates/rendering/src/lib.rs	Integrates click-ripple collection and rendering while consistently clamping ripple and cursor interpolation to the configured freeze time.
crates/rendering/src/layers/click_ripple.rs	Adds the bounded click-ripple GPU layer and instance data used by preview and export rendering.
crates/project/src/configuration.rs	Adds backward-compatible cursor family and ripple configuration fields shared by both editors and the renderer.
apps/desktop/src/utils/tauri.ts	Keeps the generated frontend declarations aligned with the authoritative Rust cursor configuration types.
apps/desktop-gpui/src/editor_sidebar/cursor.rs	Adds native cursor-style and ripple controls, with the earlier narrative-comment concern resolved.
apps/desktop-gpui/src/editor_window/frame.rs	Adds GPUI frame style, theme, URL, and title controls with project-history integration.

_{Reviews (3): Last reviewed commit: "chore: trim narrative comments from curs..." | Re-trigger Greptile}

Context used (3)

• Knowledge Base — Desktop application and recording experience
• Knowledge Base — GPUI desktop client
• Knowledge Base — Export and editor rendering

[richiemcilroy]

hey @greptileai, please re-review the PR

[greptile-apps]

Generated bindings edited directly

These declarations directly modify a generated tauri.ts file, contrary to the repository requirement that binding changes come from the authoritative generator. Regeneration can overwrite manual declarations and obscure whether the Rust binding source remains aligned.

Context Used: AGENTS.md (source)

Prompt To Fix With AI

This is a comment left during a code review.
Path: apps/desktop/src/utils/tauri.ts
Line: 918-921

Comment:
**Generated bindings edited directly**

These declarations directly modify a generated `tauri.ts` file, contrary to the repository requirement that binding changes come from the authoritative generator. Regeneration can overwrite manual declarations and obscure whether the Rust binding source remains aligned.

**Context Used:** AGENTS.md ([source](https://github.com/capsoftware/cap/blob/main/AGENTS.md))

---

For each issue above, determine whether it is valid and should be fixed. If so, fix it directly.

[richiemcilroy]

hey @greptileai, please re-review the PR

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