@remotion/studio: Add default editor menu

[JonnyBurger]

Summary

• add a "Configure default editor..." item to the Remotion menu
• show only editors detected as installed and preselect the active default
• persist the selection through Config.setDefaultEditor() and reload Studio
• validate the selected editor server-side before updating the config file

Test plan

• bun test packages/studio-server/src/test/default-editor-route.test.ts packages/studio-server/src/test/editor-registry.test.ts packages/studio-server/src/test/update-public-license.test.ts
• bunx turbo run make --filter='@remotion/studio' --filter='@remotion/studio-server' --filter='@remotion/studio-shared'
• bunx turbo run lint test --filter='@remotion/studio'
• bun run build
• bun run stylecheck

Stack

• Depends on @remotion/cli: Add configurable default editor #9923

[vercel]

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Project	Deployment	Actions	Updated (UTC)
bugs	Ready	Preview	Jul 30, 2026 1:24pm
remotion	Ready	Preview	Jul 30, 2026 1:24pm

[pullfrog]

✅ No new issues found.

Reviewed changes

• New API routes: GET /api/default-editor-info returns the current default editor and installed editors; POST /api/update-default-editor validates and persists the selection into remotion.config.ts via AST manipulation
• New modal: ConfigureDefaultEditorModal with a Combobox listing installed editors and a "No preference" option, following existing modal patterns
• Menu integration: Conditionally adds "Configure default editor..." to the Remotion menu when Studio is connected, not in read-only mode, and not in browser Studio
• studio-shared cleanup: Reordered exports alphabetically and corrected BrowserStudioOperations to a type-only export
• Tests: Unit tests for config-file AST manipulation (append, replace multiline, preserve comments/strings, removal) and a handler test for the null-editor case

  ^{｜ View workflow run ｜ Using DeepSeek Pro (free via Pullfrog for OSS) (Claude Opus not used — the program covers this model; add its provider key to run your pick) ｜ 𝕏}

[pullfrog]

✅ No new issues found.

Reviewed changes

• New API routes: GET /api/default-editor-info returns the current default editor and installed editors; POST /api/update-default-editor validates and persists the selection into remotion.config.ts via AST manipulation
• New modal: ConfigureDefaultEditorModal with a Combobox listing installed editors and a "No preference" option, following existing modal patterns
• Menu integration: Conditionally adds "Configure default editor..." to the Remotion menu when Studio is connected, not in read-only mode, and not in browser Studio
• studio-shared cleanup: Reordered exports alphabetically and corrected BrowserStudioOperations to a type-only export
• Tests: Unit tests for config-file AST manipulation (append, replace multiline, preserve comments/strings, removal) and a handler test for the null-editor case

  ^{｜ View workflow run ｜ Using DeepSeek Pro (free via Pullfrog for OSS) (Claude Opus not used — the program covers this model; add its provider key to run your pick) ｜ 𝕏}