Fix deploy: git checkout before pull, use npm ci

Prevents package-lock.json conflicts by resetting local changes
before pulling. Uses npm ci (clean install from lockfile) instead
of npm ci --production=false.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -43,12 +43,14 @@ jobs:
               cd "$APP_DIR"
             else
               cd "$APP_DIR"
+              echo "==> Resetting local changes..."
+              git checkout -- .
               echo "==> Pulling latest code..."
               git pull origin main
             fi
 
             echo "==> Installing dependencies..."
-            npm ci --production=false
+            npm ci
 
             echo "==> Building..."
             npm run build