chore: gitignore maintainer-specific production deploy files

deploy/compose.yaml, deploy/Caddyfile, and deploy/Caddyfile.dev.snippet
contain homelab-specific config and are not useful as public templates.
Public-facing equivalents: compose.example.yaml and Caddyfile.snippet.

.gitignore

@@ -49,8 +49,11 @@ tests/.auth/
 # Backups
 deploy/backups/data/
 
-# Production configs synced from server — never commit
+# Production configs — maintainer-specific, never commit
 deploy/.prod/
+deploy/compose.yaml
+deploy/Caddyfile
+deploy/Caddyfile.dev.snippet
 
 # Design handoff bundle (reference only, not committed)
 .design-tmp/