ci: cache node_modules and aw-tauri cargo target to reduce build times

- Cache node_modules directly instead of npm global cache. The global
  cache only saves download time, but npm ci still does a full install
  into node_modules every run (~5-7 min per npm ci call). Caching
  node_modules directly skips this entirely on cache hit.

- Cache aw-tauri/src-tauri/target alongside aw-server-rust/target in
  the Tauri workflow. The Tauri Cargo release build takes ~8 min
  uncached and was not being cached previously.

- Also cache aw-tauri/node_modules in the Tauri workflow (has its own
  package-lock.json separate from aw-webui).

Expected improvement: ~15-20 min savings on cached Windows Tauri builds
(from ~34 min to ~15 min).

Author: TimeToBuildBob

.github/workflows/build-tauri.yml

@@ -69,28 +69,25 @@ jobs:
         with:
           toolchain: stable
 
-      - name: Get npm cache dir
-        id: npm-cache-dir
-        run: |
-          echo "dir=$(npm config get cache)" >> $GITHUB_OUTPUT
-
-      - uses: actions/cache@v4
-        name: Cache npm
+      - name: Cache node_modules
+        uses: actions/cache@v4
         if: ${{ !matrix.skip_webui }}
-        env:
-          cache-name: node
         with:
-          path: ${{ steps.npm-cache-dir.outputs.dir }}
-          key: ${{ matrix.os }}-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+          path: |
+            aw-server-rust/aw-webui/node_modules
+            aw-tauri/node_modules
+          key: ${{ matrix.os }}-node_modules-${{ hashFiles('**/package-lock.json') }}
           restore-keys: |
-            ${{ matrix.os }}-${{ env.cache-name }}-
+            ${{ matrix.os }}-node_modules-
 
       - name: Cache cargo build
         uses: actions/cache@v4
         env:
           cache-name: cargo-build-target
         with:
-          path: aw-server-rust/target
+          path: |
+            aw-server-rust/target
+            aw-tauri/src-tauri/target
           key: ${{ matrix.os }}-${{ env.cache-name }}-${{ steps.toolchain.outputs.cachekey }}-${{ hashFiles('**/Cargo.lock') }}
           restore-keys: |
             ${{ matrix.os }}-${{ env.cache-name }}-${{ steps.toolchain.outputs.rustc_hash }}-

.github/workflows/build.yml

@@ -70,21 +70,14 @@ jobs:
       with:
         toolchain: stable
 
-    - name: Get npm cache dir
-      id: npm-cache-dir
-      run: |
-        echo "dir=$(npm config get cache)" >> $GITHUB_OUTPUT
-
-    - uses: actions/cache@v4
-      name: Cache npm
+    - name: Cache node_modules
+      uses: actions/cache@v4
       if: ${{ !matrix.skip_webui }}
-      env:
-        cache-name: node
       with:
-        path: ${{ steps.npm-cache-dir.outputs.dir }}
-        key: ${{ matrix.os }}-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
+        path: aw-server-rust/aw-webui/node_modules
+        key: ${{ matrix.os }}-node_modules-${{ hashFiles('**/package-lock.json') }}
         restore-keys: |
-          ${{ matrix.os }}-${{ env.cache-name }}-
+          ${{ matrix.os }}-node_modules-
 
     - name: Cache cargo build
       uses: actions/cache@v4