fix: remove old Node.js before installing v22 on Linux runner

The Act runner has Node 18 at /usr/local/bin/node which takes
precedence over the apt-installed /usr/bin/node. Even after
running nodesource setup and apt-get install, the old Node 18
binary remained in the PATH. Now removes old binaries and uses
hash -r to force path re-lookup. Also removes package-lock.json
before npm install to ensure correct platform-specific bindings.

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

.gitea/workflows/build-app.yml

@@ -20,15 +20,28 @@ jobs:
   build-linux:
     runs-on: ubuntu-latest
     steps:
-      - name: Install Node.js
+      - name: Install Node.js 22
         run: |
+          NEED_INSTALL=false
           if command -v node >/dev/null 2>&1; then
-            echo "Node.js already installed: $(node --version)"
+            NODE_MAJOR=$(node --version | sed 's/v\([0-9]*\).*/\1/')
+            echo "Found Node.js $(node --version) at $(which node) (major: ${NODE_MAJOR})"
+            if [ "$NODE_MAJOR" -lt 22 ]; then
+              echo "Node.js ${NODE_MAJOR} is too old, removing before installing 22..."
+              sudo rm -f /usr/local/bin/node /usr/local/bin/npm /usr/local/bin/npx /usr/local/bin/corepack
+              hash -r
+              NEED_INSTALL=true
+            fi
           else
-            echo "Installing Node.js 22..."
+            echo "Node.js not found, installing 22..."
+            NEED_INSTALL=true
+          fi
+          if [ "$NEED_INSTALL" = true ]; then
             curl -fsSL https://deb.nodesource.com/setup_22.x | sudo -E bash -
             sudo apt-get install -y nodejs
+            hash -r
           fi
+          echo "Node.js at: $(which node)"
           node --version
           npm --version
 
@@ -81,21 +94,27 @@ jobs:
           else
             curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
           fi
-          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+          export PATH="$HOME/.cargo/bin:$PATH"
           rustc --version
           cargo --version
 
       - name: Install frontend dependencies
         working-directory: ./app
-        run: npm ci
+        run: |
+          rm -rf node_modules package-lock.json
+          npm install
 
       - name: Install Tauri CLI
         working-directory: ./app
-        run: npx tauri --version || npm install @tauri-apps/cli
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri --version || npm install @tauri-apps/cli
 
       - name: Build Tauri app
         working-directory: ./app
-        run: npx tauri build
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri build
 
       - name: Collect artifacts
         run: |
@@ -134,12 +153,21 @@ jobs:
   build-macos:
     runs-on: macos-latest
     steps:
-      - name: Install Node.js
+      - name: Install Node.js 22
         run: |
-          if command -v node &>/dev/null; then
-            echo "Node.js already installed: $(node --version)"
+          NEED_INSTALL=false
+          if command -v node >/dev/null 2>&1; then
+            NODE_MAJOR=$(node --version | sed 's/v\([0-9]*\).*/\1/')
+            echo "Found Node.js $(node --version) (major: ${NODE_MAJOR})"
+            if [ "$NODE_MAJOR" -lt 22 ]; then
+              echo "Node.js ${NODE_MAJOR} is too old, upgrading to 22..."
+              NEED_INSTALL=true
+            fi
           else
-            echo "Installing Node.js 22 via Homebrew..."
+            echo "Node.js not found, installing 22..."
+            NEED_INSTALL=true
+          fi
+          if [ "$NEED_INSTALL" = true ]; then
             brew install node@22
             brew link --overwrite node@22
           fi
@@ -176,22 +204,28 @@ jobs:
           else
             curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
           fi
-          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+          export PATH="$HOME/.cargo/bin:$PATH"
           rustup target add aarch64-apple-darwin x86_64-apple-darwin
           rustc --version
           cargo --version
 
       - name: Install frontend dependencies
         working-directory: ./app
-        run: npm ci
+        run: |
+          rm -rf node_modules
+          npm install
 
       - name: Install Tauri CLI
         working-directory: ./app
-        run: npx tauri --version || npm install @tauri-apps/cli
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri --version || npm install @tauri-apps/cli
 
       - name: Build Tauri app (universal)
         working-directory: ./app
-        run: npx tauri build --target universal-apple-darwin
+        run: |
+          export PATH="$HOME/.cargo/bin:$PATH"
+          npx tauri build --target universal-apple-darwin
 
       - name: Collect artifacts
         run: |