Fix Poetry cache path for proper dependency caching

Changed cache configuration:
- Moved Install Poetry step before cache setup
- Updated cache path to ~/.cache/pypoetry/virtualenvs (actual venv location)
- Removed **/poetry.lock wildcard in favor of direct poetry.lock reference
- This ensures the virtualenv itself is cached, not just metadata

This should significantly speed up CI/CD runs by reusing installed packages.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.gitea/workflows/mlops-pipeline.yml

@@ -17,19 +17,19 @@ jobs:
         with:
           python-version: '3.12'
 
-      - name: Cache Poetry dependencies
+      - name: Install Poetry
+        run: pip install poetry
+
+      - name: Cache Poetry virtualenv
         uses: actions/cache@v3
         with:
           path: |
-            ~/.cache/pypoetry
+            ~/.cache/pypoetry/virtualenvs
             ~/.cache/pip
-          key: ${{ runner.os }}-poetry-${{ hashFiles('**/poetry.lock') }}
+          key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
           restore-keys: |
             ${{ runner.os }}-poetry-
 
-      - name: Install Poetry
-        run: pip install poetry
-
       - name: Install dependencies
         run: poetry install --no-interaction --no-root
 
@@ -63,19 +63,19 @@ jobs:
         with:
           python-version: '3.12'
 
-      - name: Cache Poetry dependencies
+      - name: Install Poetry
+        run: pip install poetry
+
+      - name: Cache Poetry virtualenv
         uses: actions/cache@v3
         with:
           path: |
-            ~/.cache/pypoetry
+            ~/.cache/pypoetry/virtualenvs
             ~/.cache/pip
-          key: ${{ runner.os }}-poetry-${{ hashFiles('**/poetry.lock') }}
+          key: ${{ runner.os }}-poetry-${{ hashFiles('poetry.lock') }}
           restore-keys: |
             ${{ runner.os }}-poetry-
 
-      - name: Install Poetry
-        run: pip install poetry
-
       - name: Install dependencies
         run: poetry install --no-interaction --no-root