Native Rust + slint generator for article cover art

Omakase / Japanese-constructivist design: six sumi-ê themes, five wagara patterns,
three layouts and five output formats (1:1 to 2:1, including the 1.91:1 Open Graph
card). Montserrat Black/Bold/Regular, WCAG AAA text, no Japanese glyphs in the art.

Live preview, adjustable film grain and pattern strength, Omakase randomize, named
TOML presets, non-blocking 2K/4K PNG + SVG export. Preview and exports rasterize the
same SVG via resvg. CI runs fmt, clippy, tests and coverage.

Author: skvggor

.github/workflows/ci.yml

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+name: CI
+
+on:
+  push:
+    branches: [main, develop]
+    paths-ignore: ["**.md", "docs/**", "assets/icons/**"]
+  pull_request:
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: always
+  CARGO_INCREMENTAL: "0"
+
+jobs:
+  quality:
+    name: Format · Clippy · Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install slint build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libxkbcommon-dev libwayland-dev wayland-protocols \
+            libxcb1-dev libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev \
+            libfontconfig1-dev libgl1-mesa-dev
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Format
+        run: cargo fmt --all --check
+
+      - name: Clippy
+        run: cargo clippy --all-targets -- -D warnings
+
+      - name: Test
+        run: cargo test
+
+  coverage:
+    name: Coverage (core ≥ 80%)
+    # The instrumented build is the most expensive job, so only run it where it
+    # matters: pull requests and pushes to main (not on every develop push).
+    if: github.event_name != 'push' || github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install slint build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libxkbcommon-dev libwayland-dev wayland-protocols \
+            libxcb1-dev libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev \
+            libfontconfig1-dev libgl1-mesa-dev
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-llvm-cov
+
+      - name: Library coverage (fail under 80% lines)
+        run: cargo llvm-cov --lib --fail-under-lines 80

.gitignore

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+/target
+**/*.rs.bk
+*.pdb