Feature/UI polish pass

[rsgalloway]

This pull request makes significant improvements to the user interface and code structure for the sview application, focusing on enhanced visual consistency, a richer dark theme, improved filtering, and better item inspection. The most important changes are grouped below.

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UI Theming and Visual Improvements

• Refined the dark theme with improved color choices for backgrounds, buttons, highlights, and various widgets, resulting in a more cohesive and visually appealing interface. Added custom styling for menu bars, breadcrumb bars, loading overlays, and other UI elements (sview/qt/app.py). [1] [2] [3] [4] [5]
• Increased icon sizes and spacing in the icon view for better clarity and aesthetics (sview/qt/icon_view.py). [1] [2]

Custom Icons

• Introduced a new sview/qt/icons.py module providing lightweight, custom-drawn icons for directories, files, and sequences, replacing the use of standard Qt icons for a more distinctive look (sview/qt/icons.py, sview/qt/icon_view.py). [1] [2] [3]

Filtering and Keyboard Interaction

• Added signals and keyboard event handling to the icon view, enabling users to filter items by typing, and clear or backspace the filter using keyboard shortcuts (sview/qt/icon_view.py). [1] [2]

Inspector Panel Enhancements

• Enhanced the inspector panel to display image thumbnails for items, including logic to load, scale, and update the preview when the panel is resized. The panel layout is now scrollable and more robust, providing a better experience for inspecting item details (sview/qt/inspector.py). [1] [2] [3] [4] [5] [6]

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These changes collectively provide a more modern, visually appealing, and interactive user interface, while also improving code modularity and maintainability.

[Copilot]

Pull request overview

UI polish and interaction improvements for the sview Qt application, focusing on a more cohesive dark theme, richer navigation affordances (breadcrumbs/loading), and faster item discovery/inspection (type-to-filter + thumbnails).

Changes:

• Refines dark theme styling and adds styling hooks for new UI elements (breadcrumb bar, loading overlay/spinner, search input).
• Introduces custom-drawn icons and updates table/icon views to use them (plus type-to-filter keyboard handling).
• Enhances the inspector panel with a scrollable layout and image thumbnail previews; adjusts scanner behavior to treat directory symlinks as directories and adds a regression test.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tests/test_scanner.py	Adds a regression test for directory symlink classification.
sview/scanner.py	Changes raw item classification to follow symlinks when detecting directories.
sview/qt/table.py	Uses custom icons and adds key handling/signals for type-to-filter behavior.
sview/qt/main_window.py	Adds breadcrumb bar + status loading UI, wires filter key signals, and updates layout/focus behavior.
sview/qt/inspector.py	Makes inspector scrollable and adds thumbnail preview generation/resizing behavior.
sview/qt/icons.py	New module implementing custom-drawn file/folder/sequence icons.
sview/qt/icon_view.py	Uses custom icons, adjusts sizing/spacing, and adds type-to-filter key handling/signals.
sview/qt/app.py	Updates palette + stylesheet for the refined dark theme and new widget object names.

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