feat: Album art visualizer, universal macOS binary, Oklch improvements

.githooks/pre-commit

@@ -0,0 +1,11 @@
+#!/bin/sh
+# Pre-commit hook: runs cargo fmt and clippy checks.
+# Install with: git config core.hooksPath .githooks
+
+set -e
+
+echo "Running cargo fmt --check..."
+cargo fmt --all -- --check
+echo "Running cargo clippy..."
+cargo clippy --all-targets -- -D warnings
+echo "All checks passed."

.github/workflows/build.yaml

@@ -6,6 +6,10 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ !github.ref_protected }}
+
 jobs:
   build:
     name: Build and Test
@@ -61,7 +65,22 @@ jobs:
         run: cargo clippy --all-targets --all-features -- -D warnings
 
       - name: Build
+        if: matrix.os != 'macos-latest'
         run: cargo build --release --verbose
 
+      - name: Add macOS targets
+        if: matrix.os == 'macos-latest'
+        run: rustup target add x86_64-apple-darwin aarch64-apple-darwin
+
+      - name: Build universal binary (macOS)
+        if: matrix.os == 'macos-latest'
+        run: |
+          cargo build --release --target x86_64-apple-darwin
+          cargo build --release --target aarch64-apple-darwin
+          lipo -create \
+            target/x86_64-apple-darwin/release/audioleaf \
+            target/aarch64-apple-darwin/release/audioleaf \
+            -output target/release/audioleaf-universal
+
       - name: Run tests
         run: cargo test --verbose

CHANGELOG.md

@@ -4,6 +4,44 @@ All notable changes to this fork of audioleaf are documented in this file.
 
 This fork focuses on macOS compatibility, support for all Nanoleaf device types, and enhanced color palette features.
 
+## [3.5.0] - 2026-03-17
+
+### Added
+
+- **Album art visualizer**: Press `N` in the visualizer view to extract colors from the currently playing track's album artwork
+  - Spotify: artwork URL fetched via ScriptingBridge (`SBApplication`), downloaded via reqwest
+  - Apple Music: raw artwork bytes read directly from `MusicArtwork.rawData` via ScriptingBridge
+  - Falls back to osascript if ScriptingBridge is unavailable
+  - Apple Music osascript fallback uses iTunes Search API for artwork URL
+  - Background watcher thread polls every 3 seconds and auto-updates colors on song change
+  - Press any number key (`1`-`0`) to switch back to a named palette and stop the watcher
+
+- **Now playing display in TUI**: Visualizer view shows track title and color swatches
+  - "Now playing: *track title*" line appears when album art mode is active
+  - Color swatch bar shows the active palette colors as colored blocks
+  - Both update automatically when the watcher detects a song change
+  - Shared state between watcher thread and TUI via `Arc<Mutex<VizState>>`
+
+- **Universal macOS binary**: Build a fat binary supporting both Intel and Apple Silicon
+  - `make universal` runs `cargo build` for both `x86_64-apple-darwin` and `aarch64-apple-darwin`, then combines with `lipo`
+  - CI updated to build universal binary on macOS runners
+  - `make build` for single-arch release, `make clean` for cleanup
+
+- **Pre-commit hook**: `.githooks/pre-commit` runs `cargo fmt --check` and `cargo clippy -D warnings`
+  - Activate with `git config core.hooksPath .githooks`
+  - Prevents formatting and lint issues from reaching CI
+
+### Changed
+
+- **Even color distribution across panels**: `colors_from_rgb` now spreads palette colors evenly instead of padding with the last color
+  - 4 colors across 12 panels: each color covers 3 panels (was 1-1-1-9)
+  - Works correctly for all palette sizes
+
+- **Color extraction**: Switched from `color-thief` to `auto-palette` crate
+  - Native Oklch color space support (`to_oklch()`, `lightness()`, `is_dark()`)
+  - Extracts the 4 most dominant colors sorted by pixel population
+  - Filters out near-black colors using Oklch lightness (`l > 0.15`) since they can't be represented on LED panels
+
 ## [3.2.0] - 2025-12-05
 
 ### Added