Sports unification phase 0: safety net, cwd-independent fonts, element_style

.github/workflows/test.yml

@@ -5,6 +5,10 @@ on:
   push:
     branches: [main]
 
+# Both jobs only check out the repo and run pytest.
+permissions:
+  contents: read
+
 jobs:
   plugin-safety:
     name: Plugin safety harness + unit tests
@@ -31,3 +35,41 @@ jobs:
             test/plugins/test_harness.py \
             test/plugins/test_visual_rendering.py \
             test/plugins/test_plugin_matrix.py
+
+  unit-tests:
+    name: Core unit tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          persist-credentials: false
+
+      - uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
+        with:
+          python-version: "3.12"
+          cache: pip
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt -r requirements-test.txt
+          pip install RGBMatrixEmulator
+
+      # Safety net for the shared sports/scroll/style infrastructure. These
+      # suites existed but were not enrolled in CI, so a refactor of
+      # src/base_classes or src/common could regress them silently. Enrolled
+      # explicitly (not `pytest test/`) so known hardware-only suites don't
+      # break CI; grow this list as more suites are made headless.
+      - name: Run core unit suites
+        run: |
+          pytest --no-cov \
+            test/test_skin_system.py \
+            test/test_font_manager.py \
+            test/test_data_sources.py \
+            test/test_api_extractors.py \
+            test/test_scroll_helper.py \
+            test/test_scroll_helper_continuous.py \
+            test/test_adaptive_layout.py \
+            test/test_loader_compat_warning.py \
+            test/test_sports_base_characterization.py \
+            test/test_element_style.py

CHANGELOG.md

@@ -0,0 +1,37 @@
+# Changelog
+
+Notable changes to the LEDMatrix core. The version below is the value of
+`src.__version__`, which the plugin loader reports to compatibility checks and
+which plugin manifests reference via `ledmatrix_min_version`.
+
+**Why this file exists:** the plugin monorepo bundles fallback copies of several
+core modules (see `docs/plugin-development/08-shared-sports-code.md` in
+[ledmatrix-plugins](https://github.com/ChuckBuilds/ledmatrix-plugins)). A plugin
+may delete its bundled copy only when its manifest floors on the first core
+release that ships the module — which requires module additions to be recorded
+here, against a version number. When you add a module plugins will import via
+`src.*`, note it in the Unreleased section and bump `src/__init__.py` in the
+release that ships it.
+
+## Unreleased
+
+### Added
+- `src/element_style.py` — per-element style resolver backing the
+  `x-style-elements` config-schema extension. Already consumed (behind guarded
+  imports with classic fallbacks) by the `of-the-day`, `ledmatrix-music`, and
+  `football-scoreboard` plugins.
+- Core unit-test CI job enrolling the previously unenrolled suites (skin
+  system, data sources, API extractors, scroll helper, adaptive layout, loader
+  compatibility warning) plus new characterization tests for
+  `src/base_classes/sports.py` ahead of the shared sports-code unification.
+
+### Fixed
+- `FontManager` resolves `assets/fonts` against the core install root instead
+  of the process working directory, so font loading works when the process
+  starts elsewhere (e.g. the plugin safety harness on CI).
+
+## 3.1.0
+
+Baseline for this changelog. Highlights already shipped at this version:
+skin system for sports scoreboards (#419), Vegas continuous-scroll overhaul
+(#423), plugin update surfacing (#421).