fix: trigger HF Spaces sync on every push to main

Removed the paths filter from sync-to-spaces.yml. The filter was too
restrictive — changes to README.md and other files outside the listed
paths were silently skipping the sync. Now any PR merge to main will
always push the latest code to HF Spaces.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.github/workflows/sync-to-spaces.yml

@@ -3,11 +3,6 @@ name: Sync to Hugging Face Spaces
 on:
   push:
     branches: [main]
-    paths:
-      - "spaces/**"
-      - "src/**"
-      - "data/sample/**"
-      - "config.yaml"
 
   workflow_dispatch: