ci(deploy): add change detection to skip unaffected workflows

Add a new job 'detect-changes' to check modified paths and conditionally run bot/api workflows

.gitea/workflows/deploy.yml

@@ -6,7 +6,30 @@ on:
       - main
 
 jobs:
+  detect-changes:
+    runs-on: ubuntu-latest
+    outputs:
+      bot: ${{ steps.filter.outputs.bot }}
+      api: ${{ steps.filter.outputs.api }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Check for changes
+        uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          filters: |
+            bot:
+              - 'apps/bot/**'
+              - 'packages/**'
+            api:
+              - 'apps/api/**'
+              - 'packages/**'
+
   build-and-deploy-bot:
+    needs: detect-changes
+    if: needs.detect-changes.outputs.bot == 'true'
     env:
       DOCKER_LATEST: latest
     runs-on: ubuntu-latest
@@ -54,6 +77,8 @@ jobs:
           }'
 
   build-and-deploy-api:
+    needs: detect-changes
+    if: needs.detect-changes.outputs.api == 'true'
     env:
       DOCKER_LATEST: latest
     runs-on: ubuntu-latest