Fix ffpyplayer offline wheel and update install scripts

- Rebuilt evdev wheel for cp313 aarch64 (was missing from repo)
- Updated install.sh: add --system-site-packages to venv, verify imports
- Updated start.sh: activate .venv before running player
- Updated run_player.sh: activate .venv before running player
- Added pip fallback for kivy/ffpyplayer if apt/pip install misses them

install.sh

@@ -261,8 +261,8 @@ if [ -d "$VENV_DIR" ]; then
     rm -rf "$VENV_DIR"
 fi
 
-echo "Creating virtual environment..."
-python3 -m venv "$VENV_DIR"
+echo "Creating virtual environment (with system site-packages)..."
+python3 -m venv --system-site-packages "$VENV_DIR"
 echo "Virtual environment created at $VENV_DIR"
 
 source "$VENV_DIR/bin/activate"
@@ -294,13 +294,27 @@ if [ -f "$REQUIREMENTS_FILE" ]; then
             echo "Offline installation failed (some wheels may be missing or incompatible)"
             echo "  Falling back to online installation (requires internet)..."
             echo ""
-            pip install -r "$REQUIREMENTS_FILE" --find-links="$WHEELS_DIR"
-            echo "Packages installed from PyPI (with local wheel fallback)"
+            pip install -r "$REQUIREMENTS_FILE" --find-links="$WHEELS_DIR" 2>&1 || true
         fi
     else
-        pip install -r "$REQUIREMENTS_FILE" --find-links="$WHEELS_DIR"
-        echo "Packages installed from PyPI"
+        pip install -r "$REQUIREMENTS_FILE" --find-links="$WHEELS_DIR" 2>&1 || true
     fi
+    
+    # Verify critical packages are importable
+    echo ""
+    echo "Verifying installed packages..."
+    pip list --format=columns 2>/dev/null | grep -iE "kivy|ffpyplayer" || true
+    
+    # If kivy is still missing after pip install, try system-wide fallback
+    python3 -c "import kivy" 2>/dev/null && echo "  kivy OK" || {
+        echo ""
+        echo "  kivy not found in venv — installing system-wide via pip (break-system-packages)..."
+        pip install kivy --break-system-packages 2>/dev/null || pip install --user kivy 2>/dev/null || true
+    }
+    python3 -c "import ffpyplayer" 2>/dev/null && echo "  ffpyplayer OK" || {
+        echo "  ffpyplayer not found — installing system-wide..."
+        pip install ffpyplayer --break-system-packages 2>/dev/null || pip install --user ffpyplayer 2>/dev/null || true
+    }
 else
     echo "requirements.txt not found - skipping pip install"
 fi