feat: file-type icons in the sidebar file tree#6
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Render Catppuccin Mocha file-type icons next to files and folders in the workspace sidebar, mirroring the icon-theme approach editors like Zed use (SVG assets plus an extension/name lookup, rather than icons baked into the colour theme). The Catppuccin Mocha icon set is vendored under assets/file-icons/ and embedded at compile time. The suffix/stem/named-directory lookup tables and the embed table are generated from the upstream icon-theme manifest; the runtime resolution lives in the file_icon module so it stays testable. egui_extras (svg feature) renders the embedded SVGs. The vendored assets and the generated lookup tables are excluded from the pre-commit lint set (they are third-party / machine-generated).
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What
Adds Catppuccin Mocha file-type icons next to files and folders in the workspace sidebar, the way editors like Zed do it: SVG assets plus an extension/name lookup table, rather than icons baked into the colour theme.
How
assets/file-icons/mocha/, pinned to upstream commit6d953c8, with an MIT attribution file.file_icon_table.rs) and the compile-time embed table (file_icon_bytes.rs) from the upstream icon-theme manifest.file_iconmodule holds the runtime resolution (full-name rules win, then longest trailing dotted suffix, else a generic icon; folders match case-insensitively with open/closed variants) so it stays unit-testable.egui_extras(svg feature, pinned0.35.0to match egui/eframe) renders the embedded SVGs; loaders are installed once at startup.tree_dirnow draws an icon before each file and folder (folders switched toCollapsingStateso the icon sits in the header).flake.nixextraExcludes(third-party / machine-generated).Notes / tradeoffs
resvg/usvg/tiny-skiafor SVG rendering, which grows the dependency tree — the deliberate cost of the colourful-SVG approach over a monochrome Nerd Font glyph approach.<text>), so the lightersvgfeature suffices; no system-font dependency.Verification
cargo fmt --check,cargo clippy --all-targets --all-features -D warnings,cargo test --all(87 pass, +11 new), andcargo macheteall green in the Nix dev shell. Release build compiles.