feat: Improve workflow documentation generation

- Add detection for needs-backport and Release labels
- Deduplicate label triggers in Quick Reference section
- Generate Quick Reference dynamically from workflows
- Show all label-triggered workflows with descriptions

Co-authored-by: snomiao <7323030+snomiao@users.noreply.github.com>

.github/workflows/README.md

@@ -25,11 +25,14 @@ Workflow files follow a consistent naming pattern: `<prefix>-<descriptive-name>.
 ## Quick Reference
 
 For label-triggered workflows, add the corresponding label to a PR to trigger the workflow:
-- `claude-review` - Trigger AI-powered code review
-- `New Browser Test Expectations` - Update Playwright test snapshots
+- `New Browser Test Expectations` - Updates Playwright test snapshots when triggered by label or comment
+- `Release` - Triggers 3 workflows
+- `claude-review` - AI-powered code review triggered by adding the 'claude-review' label to a PR
+- `needs-backport` - Automatically backports merged PRs to release branches when 'needs-backport' label is applied
 
 For manual workflows, use the "Run workflow" button in the Actions tab.
 
+
 ## Workflow Details
 
 
@@ -95,6 +98,14 @@ For manual workflows, use the "Run workflow" button in the Actions tab.
 
 **Triggers:** pull_request, push
 
+#### [`ci-workflow-docs.yaml`](./ci-workflow-docs.yaml)
+
+**Name:** CI: Workflow Documentation
+
+**Description:** Validates that workflow documentation is up-to-date with workflow files
+
+**Triggers:** pull_request
+
 
 ### PR
 
@@ -106,6 +117,8 @@ For manual workflows, use the "Run workflow" button in the Actions tab.
 
 **Triggers:** workflow_dispatch (manual), pull_request_target (closed, labeled)
 
+**Label Triggers:** `needs-backport`
+
 #### [`pr-claude-review.yaml`](./pr-claude-review.yaml)
 
 **Name:** PR: Claude Review
@@ -137,6 +150,8 @@ For manual workflows, use the "Run workflow" button in the Actions tab.
 
 **Triggers:** pull_request (closed)
 
+**Label Triggers:** `Release`
+
 #### [`release-draft-create.yaml`](./release-draft-create.yaml)
 
 **Name:** Release Draft Create
@@ -145,6 +160,8 @@ For manual workflows, use the "Run workflow" button in the Actions tab.
 
 **Triggers:** pull_request (closed)
 
+**Label Triggers:** `Release`
+
 #### [`release-npm-types.yaml`](./release-npm-types.yaml)
 
 **Name:** Release NPM Types
@@ -234,6 +251,8 @@ For manual workflows, use the "Run workflow" button in the Actions tab.
 
 **Triggers:** pull_request (closed)
 
+**Label Triggers:** `Release`
+
 #### [`publish-desktop-ui.yaml`](./publish-desktop-ui.yaml)
 
 **Name:** Publish Desktop UI