ci: restructure GitHub Actions workflows for improved organization

.github/actions/setup-node-pnpm/action.yml

@@ -0,0 +1,41 @@
+name: Setup Node + pnpm
+description: Setup pnpm, Node.js, pnpm store cache, and install workspace dependencies
+
+inputs:
+  node-version:
+    description: Node.js version
+    required: false
+    default: '25'
+  install:
+    description: Whether to run pnpm install
+    required: false
+    default: 'true'
+
+runs:
+  using: composite
+  steps:
+    - name: Setup pnpm
+      uses: pnpm/action-setup@v4
+
+    - name: Setup Node
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ inputs.node-version }}
+
+    - name: Get pnpm store directory
+      id: pnpm-cache
+      shell: bash
+      run: echo "STORE_PATH=$(pnpm store path)" >> $GITHUB_OUTPUT
+
+    - name: Cache pnpm store
+      uses: actions/cache@v4
+      with:
+        path: ${{ steps.pnpm-cache.outputs.STORE_PATH }}
+        key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
+        restore-keys: |
+          ${{ runner.os }}-pnpm-store-
+
+    - name: Install workspace dependencies
+      if: inputs.install == 'true'
+      shell: bash
+      run: pnpm install --frozen-lockfile --ignore-scripts

.github/actions/setup-rust/action.yml

@@ -0,0 +1,36 @@
+name: Setup Rust
+description: Install Rust stable toolchain with cargo cache
+
+inputs:
+  targets:
+    description: Additional Rust targets to install (comma-separated)
+    required: false
+    default: ''
+  cache-key:
+    description: Extra cache key suffix for cargo
+    required: false
+    default: 'default'
+  cache-paths:
+    description: Additional paths to cache (newline-separated), appended to ~/.cargo/registry and ~/.cargo/git
+    required: false
+    default: 'target'
+
+runs:
+  using: composite
+  steps:
+    - name: Install Rust stable
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        targets: ${{ inputs.targets }}
+
+    - name: Cache cargo
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          ${{ inputs.cache-paths }}
+        key: ${{ runner.os }}-cargo-${{ inputs.cache-key }}-${{ hashFiles('Cargo.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-cargo-${{ inputs.cache-key }}-
+          ${{ runner.os }}-cargo-

.github/actions/setup-tauri/action.yml

@@ -0,0 +1,54 @@
+name: Setup Tauri Build
+description: Common Tauri GUI build setup - cargo cache with deps-only hash, version sync, route generation
+
+inputs:
+  rust-targets:
+    description: Rust targets to install (comma-separated)
+    required: false
+    default: ''
+  version:
+    description: Version string to sync into Cargo.toml and tauri.conf.json
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - name: Install Rust stable
+      uses: dtolnay/rust-toolchain@stable
+      with:
+        targets: ${{ inputs.rust-targets }}
+
+    - name: Get Cargo deps hash (exclude root package version for stable cache key)
+      id: cargo-deps-hash
+      shell: bash
+      run: |
+        HASH=$(awk '/^name = "memory-sync-gui"$/{print; getline; sub(/version = ".*"/, "version = \"0.0.0\""); print; next} 1' gui/src-tauri/Cargo.lock | openssl dgst -sha256 2>&1 | awk '{print $NF}')
+        echo "hash=$HASH" >> $GITHUB_OUTPUT
+
+    - name: Cache cargo + tauri target
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          gui/src-tauri/target
+        key: ${{ runner.os }}-cargo-${{ steps.cargo-deps-hash.outputs.hash }}
+        restore-keys: |
+          ${{ runner.os }}-cargo-
+
+    - name: Sync Tauri version from CLI
+      shell: bash
+      run: |
+        version="${{ inputs.version }}"
+        sed -i.bak "s/^version = \".*\"/version = \"${version}\"/" gui/src-tauri/Cargo.toml
+        rm -f gui/src-tauri/Cargo.toml.bak
+        jq --arg v "$version" '.version = $v' gui/src-tauri/tauri.conf.json > gui/src-tauri/tauri.conf.tmp && mv gui/src-tauri/tauri.conf.tmp gui/src-tauri/tauri.conf.json
+        echo "Synced version to ${version}"
+
+    - name: Generate route tree
+      shell: bash
+      run: pnpm -F @truenine/memory-sync-gui run generate:routes
+
+    - name: Clean old bundle artifacts
+      shell: bash
+      run: rm -rf gui/src-tauri/target/**/bundle

.github/workflows/deploy-docs.yml

@@ -0,0 +1,12 @@
+name: Deploy Docs
+
+# TODO: Vercel deployment for doc/ Next.js site
+
+on:
+  workflow_dispatch:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-24.04
+    steps:
+      - run: echo "TODO"

.github/workflows/pull-request.yml

@@ -0,0 +1,51 @@
+name: Pull Request
+
+on:
+  pull_request:
+    branches:
+      - main
+    types: [opened, synchronize, reopened, closed]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
+jobs:
+  check:
+    runs-on: ubuntu-24.04
+    if: github.event.pull_request.merged == false
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Cache apt packages
+        uses: actions/cache@v4
+        with:
+          path: /var/cache/apt/archives
+          key: apt-gtk-${{ runner.os }}-${{ hashFiles('.github/workflows/pull-request.yml') }}
+          restore-keys: apt-gtk-${{ runner.os }}-
+
+      - name: Install GTK development dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libgtk-3-dev libglib2.0-dev libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf pkg-config
+
+      - uses: ./.github/actions/setup-node-pnpm
+
+      - name: Build
+        run: pnpm exec turbo run build
+
+      - uses: ./.github/actions/setup-rust
+        with:
+          cache-key: pr
+
+      - name: Generate Tauri icons
+        run: pnpm -F @truenine/memory-sync-gui run generate:icons
+
+      - name: Generate route tree
+        run: pnpm -F @truenine/memory-sync-gui run generate:routes
+
+      - name: Run tests
+        run: pnpm exec turbo run test
+
+      - name: Rust tests (excluding GUI)
+        run: cargo test --workspace --exclude memory-sync-gui --lib --bins --tests