fix CI: deploy on .md changes (content is the product)

Removed **.md from paths-ignore -- content changes must deploy since
Hugo builds markdown into the site. Only docs/ and .session/ ignored.

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

.gitea/workflows/deploy.yml

@@ -13,8 +13,8 @@ on:
   push:
     branches: [main]
     paths-ignore:
-      - '**.md'
       - 'docs/**'
+      - '.session/**'
   workflow_dispatch:
     inputs:
       force_deploy: