Add dependabot.yml

.github/dependabot.yml

@@ -0,0 +1,50 @@
+version: 2
+updates:
+  # Backend – Gradle (Java / Spring)
+  - package-ecosystem: "gradle"
+    directory: "/booklore-api"
+    schedule:
+      interval: "weekly"
+      day: "friday"
+      time: "03:00"
+      timezone: "UTC"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+      - "backend"
+    commit-message:
+      prefix: "chore(deps)"
+    groups:
+      gradle-dependencies:
+        patterns:
+          - "*"
+
+  # Frontend – npm (Angular)
+  - package-ecosystem: "npm"
+    directory: "/booklore-ui"
+    schedule:
+      interval: "weekly"
+      day: "friday"
+      time: "03:00"
+      timezone: "UTC"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+      - "frontend"
+    commit-message:
+      prefix: "chore(deps)"
+    groups:
+      npm-dependencies:
+        patterns:
+          - "*"
+
+  # GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    labels:
+      - "dependencies"
+      - "ci"
+    commit-message:
+      prefix: "chore(deps)"