fix(ci): correct cortex-gui path in CI workflow

The cortex-gui directory is under src/, not at the root level.

Author: echobt

.github/workflows/ci.yml

@@ -213,7 +213,7 @@ jobs:
         with:
           node-version: "20"
           cache: "npm"
-          cache-dependency-path: cortex-gui/package-lock.json
+          cache-dependency-path: src/cortex-gui/package-lock.json
 
       - name: Install Linux dependencies
         if: matrix.name == 'ubuntu'
@@ -227,16 +227,16 @@ jobs:
           path: |
             cortex-gui/node_modules
             ~/.npm
-          key: npm-${{ matrix.name }}-${{ hashFiles('cortex-gui/package-lock.json') }}
+          key: npm-${{ matrix.name }}-${{ hashFiles('src/cortex-gui/package-lock.json') }}
           restore-keys: |
             npm-${{ matrix.name }}-
       
       - name: Install frontend dependencies
-        working-directory: cortex-gui
+        working-directory: src/cortex-gui
         run: npm ci
 
       - name: Build frontend
-        working-directory: cortex-gui
+        working-directory: src/cortex-gui
         run: npm run build
 
       - name: Install Rust nightly