fix(dashboard): center instance card grid on wide screens

[HDX6692]

Fixes #1520

Problem

The Dashboard instance-card row (.chooser-family-grid) is a grid with fixed-width tracks (repeat(auto-fit, 280px)) and justify-content: start, so on wide windows the whole track group hugs the left edge while the logo and search box above are centered. Details, screenshots and DevTools traces in #1520.

Fix

Center the track group with an overflow-safe fallback:

• justify-content: start → justify-content: safe center

With safe center, narrow windows keep the current left-aligned behavior when the tracks overflow, so only wide layouts change.

Verification

• Reproduced on Comfy Desktop v1.0.47 (Windows 11 build 26200, 1920×1080); traced via --remote-debugging-port=9222 + DevTools.
• Applying justify-content: center live in DevTools centers the cards as expected (screenshots in Dashboard: instance card row stays left-aligned on wide screens instead of centering #1520).

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Advanced

Run ID: 7bea102e-b9d5-43af-ae66-f3e619cf674f

📥 Commits

Reviewing files that changed from the base of the PR and between b427984 and 021c541.

📒 Files selected for processing (1)

• src/renderer/src/views/chooser/ChooserFamilyGrid.vue

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📝 Walkthrough

Walkthrough

The dashboard instance-card grid changes from start alignment to safe center alignment. Wide layouts now center the card tracks, while narrow layouts avoid overflow clipping.

Changes

Dashboard layout

Layer / File(s)	Summary
Center instance-card tracks src/renderer/src/views/chooser/ChooserFamilyGrid.vue	The grid changes justify-content from start to safe center. Suggested reviewers: kosinkadink

Priority: ➖ Normal

Severity of issue fixed: Medium

Merge Risk: ⚪ Minimal · up to 021c5

The dashboard card grid change is limited in scope and aligns with the stated layout objective. No merge-blocking risk remains.

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Issue #1520 requires the Dashboard instance-card grid to center fixed-width tracks on wide screens and retain overflow-safe behavior on narrow screens. The PR changes .chooser-family-grid from `just…
Out of Scope Changes check	✅ Passed	The only change is the justify-content declaration in the affected chooser grid. It directly addresses Issue #1520 and introduces no unrelated behavior. A small alignment change, neatly in scope—no …

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[HDX6692]

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