[ci] Add gitea workflows

.gitea/workflows/build-flatpak.yml

@@ -0,0 +1,61 @@
+name: Build Flatpak
+
+on:
+  push:
+    branches: [ main ]
+    tags: [ '*' ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  flatpak:
+    name: Build Flatpak
+    # Use a VM runner if possible. If using a docker runner, ensure it supports namespaces.
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Install Flatpak Tools
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y flatpak flatpak-builder
+          # Initialize the user installation (safer for CI than system-wide)
+          flatpak --user remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+
+      - name: Cache Flatpak Dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.local/share/flatpak
+          key: flatpak-${{ runner.os }}-${{ hashFiles('ink.unbl.Notify.yml') }}
+
+      - name: Install Runtimes
+        run: |
+          # Extract runtime from your manifest to install it
+          # This assumes your manifest defines org.freedesktop.Platform/x86_64/23.08
+          # You may need to hardcode this or parse your YAML
+          flatpak --user install -y flathub org.freedesktop.Platform//23.08 org.freedesktop.Sdk//23.08
+
+      - name: Build Flatpak
+        run: |
+          # --force-clean: Ensures a fresh build
+          # --install-deps-from=flathub: Automatically pulls needed libs
+          # --repo=repo: Creates a local repo directory for export
+          flatpak-builder --force-clean --user --install-deps-from=flathub --repo=repo build-dir ink.unbl.Notify.yml
+
+      - name: Build Bundle
+        run: |
+          # Create a single .flatpak file for distribution
+          flatpak build-bundle repo my-app.flatpak ink.unbl.Notify
+
+      - name: Validate AppStream
+        run: |
+          # Optional: Check metadata validity
+          flatpak run org.freedesktop.appstream-cli validate --nonet my-app.flatpak || true
+
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: flatpak-bundle
+          path: my-app.flatpak