Split CI lint/format/typecheck steps per package

Run ruff check, ruff format --check, and ty check as separate steps
per package (gallery, plotstyle, tests) instead of one combined
command, so a failure points at which package broke.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -15,7 +15,12 @@ jobs:
           python-version: "3.11"
           enable-cache: true
       - run: uv sync --all-packages
-      - run: uv run ruff check gallery plotstyle tests
+      - name: ruff check gallery
+        run: uv run ruff check gallery
+      - name: ruff check plotstyle
+        run: uv run ruff check plotstyle
+      - name: ruff check tests
+        run: uv run ruff check tests
 
   format:
     name: format:ruff
@@ -27,7 +32,12 @@ jobs:
           python-version: "3.11"
           enable-cache: true
       - run: uv sync --all-packages
-      - run: uv run ruff format --check gallery plotstyle tests
+      - name: ruff format check gallery
+        run: uv run ruff format --check gallery
+      - name: ruff format check plotstyle
+        run: uv run ruff format --check plotstyle
+      - name: ruff format check tests
+        run: uv run ruff format --check tests
 
   typecheck:
     name: typecheck:ty
@@ -39,7 +49,10 @@ jobs:
           python-version: "3.11"
           enable-cache: true
       - run: uv sync --all-packages
-      - run: uv run ty check gallery plotstyle
+      - name: ty check gallery
+        run: uv run ty check gallery
+      - name: ty check plotstyle
+        run: uv run ty check plotstyle
 
   vulnerabilities:
     name: vulnerabilities:pip-audit