Add Sidekick to default view preset and dock layout

[Mbeaulne]

Description

Renames the AI Assistant window to "Sidekick" and adds it to the default dock layout and view presets. The AI chat window is now visible by default (startVisible: true) and docked to the left panel. The useSeedInitialDockLayoutFromPreset hook has been moved to run after useComponentSearchV2Window to ensure the Sidekick window is registered before the dock layout is seeded.

Related Issue and Pull requests

Type of Change

• Bug fix
• New feature
• Improvement
• Cleanup/Refactor
• Breaking change
• Documentation update

Checklist

• I have tested this does not break current pipelines / runs functionality
• I have tested the changes on staging

Screenshots (if applicable)

Test Instructions

1. Open the editor and verify the Sidekick window appears by default in the left dock panel.
2. Confirm the window is titled "Sidekick" rather than "AI Assistant".
3. Apply the "Default" and "All" view presets and verify Sidekick is visible and docked correctly in both.
4. Verify that switching view presets does not cause the Sidekick window to appear in an unexpected position or state.

Additional Comments

The hook ordering change (useSeedInitialDockLayoutFromPreset moved after useComponentSearchV2Window) is intentional — the Sidekick window must be registered before the dock layout preset is applied, otherwise it won't be placed correctly in the left dock area.

[github-actions]

🎩 Preview

A preview build has been created at: dock-sidekick-in-default-editor-layout/0fdd899

[Mbeaulne]

• Add Sidekick to default view preset and dock layout #2474 👈 (View in Graphite)
• master

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