ci: add CI pipeline for Rust and TypeScript tests

- Gitea Actions workflow with parallel TypeScript and Rust jobs
- TypeScript: bun install, lint, typecheck, test
- Rust: fmt check, clippy, test with Tauri system deps
- Add rust-toolchain.toml to pin Rust 1.93.0 for reproducibility

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.gitea/workflows/ci.yml

@@ -0,0 +1,78 @@
+name: CI
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  typescript:
+    name: TypeScript Lint + Typecheck + Test
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: MosaicIQ
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      - name: Lint
+        run: bun run lint
+
+      - name: Typecheck
+        run: bun run tsc --noEmit
+
+      - name: Test
+        run: bun test
+
+  rust:
+    name: Rust Format + Clippy + Test
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: MosaicIQ/src-tauri
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Tauri system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            libwebkit2gtk-4.1-dev \
+            build-essential \
+            curl \
+            wget \
+            file \
+            libxdo-dev \
+            libssl-dev \
+            libayatana-appindicator3-dev \
+            librsvg2-dev
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: rustfmt, clippy
+
+      - name: Cache Cargo artifacts
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            MosaicIQ/src-tauri/target
+          key: rust-${{ runner.os }}-${{ hashFiles('MosaicIQ/src-tauri/Cargo.lock') }}
+          restore-keys: rust-${{ runner.os }}-
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+
+      - name: Run tests
+        run: cargo test --all-features