ci(release): skip release workflow for non-bundle changes

Adds a paths-ignore filter to the push trigger so README tweaks,
*_test.go edits, other workflows, and fake-binary scaffolding no
longer spend 45 min debootstrapping + republishing an identical
bundle to the package registry. Adds workflow_dispatch as a manual
escape hatch for the cases where paths-ignore swallows something
that needs republishing.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -12,6 +12,20 @@ name: Release
 on:
   push:
     branches: [main]
+    paths-ignore:
+      - '**/*.md'
+      - '**/*_test.go'
+      - 'docs/**'
+      - 'test/**'
+      - 'tools/**'
+      - 'agent/tests/fakes/**'
+      - '.gitea/workflows/ci.yml'
+      - '.gitea/workflows/e2e.yml'
+      - 'deploy/proxmox-install.sh'
+      - 'deploy/vetting.example.yaml'
+      - '.gitignore'
+      - 'LICENSE'
+  workflow_dispatch:
 
 permissions:
   contents: read