Open files in focused fullscreen canvas

[BunsDev]

Summary

• open files in the same focused canvas presentation as maximized panes
• add a file-aware pane minimap with guarded pane switching and Escape return
• preserve fullscreen files across pane hide/close lifecycle edge cases

Test Plan

• pnpm vitest --run __tests__/tauriWorkspaceEditorIntegration.test.ts __tests__/tauriPhysicalPanes.test.ts __tests__/tauriWorkspacePanels.test.ts __tests__/tauriDesktopTabs.test.ts __tests__/tauriCovenLaunch.test.ts
• pnpm typecheck
• pnpm --filter psyche-build-tauri run build:web
• env PATH="/usr/bin:/bin:/usr/sbin:/sbin:$PATH" pnpm test

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Project	Deployment	Actions	Updated (UTC)
psyche-build-docs	Ready	Preview	Aug 10, 2026 10:13pm

[Copilot]

Pull request overview

This PR extends the Tauri web UI’s “focus/fullscreen canvas” presentation so it also applies cleanly to fullscreen file editing, including a file-aware minimap entry and more robust escape/return behavior during lifecycle edge cases (pane hide/close, dirty-file guards).

Changes:

• Add a “file” entry to the pane minimap (with styling) so fullscreen files participate in the same focused canvas affordances as maximized panes.
• Route Escape to return from fullscreen file focus (and stop Escape propagation from the dirty-file dialog so it doesn’t accidentally trigger file return).
• Preserve file focus state when the underlying active pane is hidden/closed, and refresh minimap/workspace correctly when leaving/closing files.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
native/macos/psyche-build-tauri/web/styles.css	Adds styling for minimap “file” dots so the active file is visually distinct.
native/macos/psyche-build-tauri/web/main.js	Implements file-aware minimap entries, guarded return-from-file-focus via Escape, and file-focus retention across pane removal.
tests/tauriWorkspaceEditorIntegration.test.ts	Strengthens source extraction and adds coverage for Escape routing, minimap refresh, and file-focus lifecycle.
tests/tauriPhysicalPanes.test.ts	Adds coverage for minimap rendering with empty layouts and file-focus retention when underlying panes are removed.
tests/tauriCovenLaunch.test.ts	Updates harness injections for the new retainFileFocusAfterThreadRemoval dependency.

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