Consolidate CI workflows into a single entry point (#836)

* refactor: consolidate CI workflows with ci-all.yml orchestrator

- Add ci-all.yml to orchestrate all CI workflows on push to main
- Update individual workflows to use workflow_call for reusability
- Remove redundant push triggers from individual test workflows
- Update release.yml to trigger on CI All workflow completion
- Auto-release on version bump commits after CI passes

Co-Authored-By: Claude <noreply@anthropic.com>
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* address security review comments

---------

Co-authored-by: Claude <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -1,9 +1,8 @@
 name: CI
 
 on:
-  push:
-    branches: [main]
   pull_request:
+  workflow_call:
 
 jobs:
   test: