add gitea actions workflow for build, test, artifact upload

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/build.yml

@@ -0,0 +1,29 @@
+name: Build Workflow
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install tmux
+        run: sudo apt-get update && sudo apt-get install -y tmux
+
+      - name: Generate tmux_commands.tsv
+        run: bash scripts/parse_manual.sh
+
+      - name: Run tests
+        run: bash tests/test_tmux_search.sh
+
+      - name: Build .alfredworkflow
+        run: bash build/build_workflow.sh
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: tmux-command-search.alfredworkflow
+          path: dist/tmux-command-search.alfredworkflow