feat: optimize model selection with source filters and sticky groups

[Soulter]

Group models by provider source in the shared selector used by chat and configuration pages. Keep the current source heading visible while scrolling, and add a custom source filter to the left of model search with API Base subtitles. Opening the menu clears prior filters and centers the selected model.

Large lists previously mounted every model row and its tooltips, and reopening hid the list while refreshing. Render only nearby rows with spacers that preserve sticky group headings, and retain loaded models during background refresh, including refresh failures. Single selection, multiple selection, clear selection, and model testing remain available.

Validation:

• Dashboard production build, including vue-tsc --noEmit; Prettier component check; all four updated locale JSON files parsed successfully.
• ruff format . and ruff check . passed.
• Browser fixture using the actual Vue component and Vuetify with mocked API responses: 500 models improved from about 3.8 seconds to 230 ms; 10,000 models opened in about 230 ms with roughly 12 mounted rows. These are local fixture measurements, not production API timings.
• Verified sticky transitions between sources, API Base subtitles, source filtering combined with search, empty results, selected-model positioning, clear selection, multiple-selection toggling, cached refresh failure, and narrow-screen layout.

Summary by Sourcery

Optimize the shared provider selector for source-aware navigation and efficient handling of large model lists.

New Features:

• Add provider-source filtering with API base information alongside model search.
• Group models by provider source with sticky source headings in the shared selector.
• Center the menu on the currently selected model when opened.

Bug Fixes:

• Preserve already loaded models during background refreshes, including failed refresh attempts.

Enhancements:

• Virtualize large provider lists so only nearby model rows are rendered while preserving scrolling and group layout.
• Retain existing single-selection, multiple-selection, clearing, and model-testing interactions while updating filtering and list behavior.

Documentation:

• Add localized text for provider-source filtering and source selection.

Tests:

• Validate source grouping, filtering, selection behavior, refresh caching, responsive layout, and large-list rendering performance.

[sourcery-ai]

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	astrbot-docs	59aca4f	Commit Preview URL Branch Preview URL	Sep 14 2026, 01:43 PM

[sourcery-ai]

Sourcery assessment

Approved.