fix: Revert event array syntax to single value

The [push, manual] array syntax broke CI config parsing.
Reverting to event: push which is known to work.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.woodpecker.yml

@@ -94,7 +94,7 @@ steps:
     depends_on: []
     when:
       branch: master
-      event: [push, manual]
+      event: push
 
   docker-cannaiq:
     image: woodpeckerci/plugin-docker-buildx
@@ -115,7 +115,7 @@ steps:
     depends_on: []
     when:
       branch: master
-      event: [push, manual]
+      event: push
 
   docker-findadispo:
     image: woodpeckerci/plugin-docker-buildx
@@ -136,7 +136,7 @@ steps:
     depends_on: []
     when:
       branch: master
-      event: [push, manual]
+      event: push
 
   docker-findagram:
     image: woodpeckerci/plugin-docker-buildx
@@ -157,7 +157,7 @@ steps:
     depends_on: []
     when:
       branch: master
-      event: [push, manual]
+      event: push
 
   # ===========================================
   # STAGE 3: Run Database Migrations (before deploy)
@@ -182,7 +182,7 @@ steps:
       - docker-backend
     when:
       branch: master
-      event: [push, manual]
+      event: push
 
   # ===========================================
   # STAGE 4: Deploy (after migrations)
@@ -210,4 +210,4 @@ steps:
       - docker-findagram
     when:
       branch: master
-      event: [push, manual]
+      event: push