Add self-healing cache validation for DeepFace weight files

.github/workflows/tests.yml

@@ -74,13 +74,56 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Cache DeepFace weights
+        uses: actions/cache@v4
+        with:
+          path: ~/.deepface/weights
+          key: deepface-weights-${{ runner.os }}-py${{ matrix.python-version }}-${{ hashFiles('requirements.txt') }}
+          restore-keys: |
+            deepface-weights-${{ runner.os }}-py${{ matrix.python-version }}-
+            deepface-weights-${{ runner.os }}-
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install pytest
           # sending files in form data throwing error in flask 3 while running tests
           pip install Werkzeug==2.0.2 flask==2.0.2
           pip install .
+      - name: Remove corrupted DeepFace weights (if any)
+        run: |
+          python - <<'PY'
+          import os, glob
+
+          weights_dir = os.path.expanduser("~/.deepface/weights")
+          if not os.path.isdir(weights_dir):
+            raise SystemExit(0)
+
+          # Validate HDF5 integrity; delete invalid files so they will be re-downloaded.
+          try:
+            import h5py
+          except Exception:
+            # If h5py isn't present for some reason, fall back to size-based cleanup only.
+            h5py = None
+
+          for p in glob.glob(os.path.join(weights_dir, "*.h5")):
+            try:
+              # Keep your existing small-file guard
+              if os.path.getsize(p) < 1024 * 100:
+                print("Removing tiny weight file:", p)
+                os.remove(p)
+                continue
+
+              if h5py is not None:
+                try:
+                  with h5py.File(p, "r"):
+                    pass
+                except Exception as e:
+                  print("Removing corrupted H5 weight file:", p, "reason:", repr(e))
+                  os.remove(p)
+
+            except OSError:
+              pass
+          PY
       - name: Test with pytest
         run: |
           cd tests/unit