feat: v2 - ensure window order while seeding default layout

[maxy-shpfy]

Description

On a user's first visit to the editor (when no window layout exists in localStorage), the dock panel stacks are now automatically seeded to match the DEFAULT_VIEW_PRESET ordering. Previously, windows would appear in registration order rather than the intended preset order.

This was achieved by:

• Replacing the flat dockPositions: Record<string, "left" | "right"> shape on ViewPreset with a structured dockAreas: PresetDockAreas object ({ left: string[], right: string[] }), where array order defines the desired stack order.
• Adding a dockSideByWindowId utility that derives a Map<id, side> from a PresetDockAreas object, used by applyViewPreset to correct dock sides without reshuffling stack order.
• Adding seedInitialDockLayoutFromPreset on WindowStoreImpl, which both corrects dock sides and rewrites windowOrder for each dock column to match the preset's declared order. This is intentionally called only when no persisted layout exists.
• Adding a useSeedInitialDockLayoutFromPreset hook that gates the call on hasPersistedLayout() and wires it into the editor on mount.

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)

Screen Recording 2026-05-04 at 1.43.48 PM.mov (uploaded via Graphite)

Test Instructions

1. Clear localStorage (or open a private/incognito window) so no persisted dock layout exists.
2. Open the editor and verify that the dock panels appear in the order defined by DEFAULT_DOCK_AREAS (left: runs-and-submission, component-library, pipeline-tree, history, debug-panel, recent-runs; right: pipeline-details, context-panel).
3. Rearrange panels, reload the page, and confirm the custom order is preserved (persisted layout is respected and seeding does not run again).
4. Apply a view preset and confirm dock sides are corrected without reshuffling the existing stack order.

Additional Comments

The applyViewPreset method intentionally does not reorder stacks — it only corrects which side a window belongs to. Stack order seeding is exclusively the responsibility of seedInitialDockLayoutFromPreset, which runs once on first visit.

[github-actions]

🎩 Preview

A preview build has been created at: 05-03-feat_v2_-_ensure_window_order_while_seeding_default_layout/73f69bd

[maxy-shpfy]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• feat: v2 - change window height for docked windows #2200
• feat: v2 - runs and submissions - add latest run #2199
• fix: v2 - reduced height of runs and submissions #2203
• feat: v2 - ensure window order while seeding default layout #2198 👈 (View in Graphite)
• feat: v2 - add runs and submissions window #2197
• master

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