Simplify workflow concurrency groups to sequentialize per workflow

docs/src/content/docs/reference/concurrency.md

@@ -15,10 +15,12 @@ Workflow-level concurrency groups include the workflow name plus context-specifi
 
 | Trigger Type | Concurrency Group | Cancel In Progress |
 |--------------|-------------------|-------------------|
-| Issues | `gh-aw-${{ github.workflow }}-${{ issue.number }}` | No |
-| Pull Requests | `gh-aw-${{ github.workflow }}-${{ pr.number \|\| ref }}` | Yes (new commits cancel outdated runs) |
-| Push | `gh-aw-${{ github.workflow }}-${{ github.ref }}` | No |
+| Issues | `gh-aw-${{ github.workflow }}` | No |
+| Pull Requests | `gh-aw-${{ github.workflow }}` | Yes (new commits cancel outdated runs) |
+| Push | `gh-aw-${{ github.workflow }}` | No |
+| Discussions | `gh-aw-${{ github.workflow }}` | No |
 | Schedule/Other | `gh-aw-${{ github.workflow }}` | No |
+| Command Triggers | `gh-aw-${{ github.workflow }}-${{ issue.number \|\| pr.number }}` | No |
 
 This ensures workflows on different issues, PRs, or branches run concurrently without interference.
 

pkg/workflow/concurrency.go

@@ -132,28 +132,8 @@ func buildConcurrencyGroupKeys(workflowData *WorkflowData, isCommandTrigger bool
 	if isCommandTrigger {
 		// For command workflows: use issue/PR number
 		keys = append(keys, "${{ github.event.issue.number || github.event.pull_request.number }}")
-	} else if isPullRequestWorkflow(workflowData.On) && isIssueWorkflow(workflowData.On) {
-		// Mixed workflows with both issue and PR triggers: use issue/PR number
-		keys = append(keys, "${{ github.event.issue.number || github.event.pull_request.number }}")
-	} else if isPullRequestWorkflow(workflowData.On) && isDiscussionWorkflow(workflowData.On) {
-		// Mixed workflows with PR and discussion triggers: use PR/discussion number
-		keys = append(keys, "${{ github.event.pull_request.number || github.event.discussion.number }}")
-	} else if isIssueWorkflow(workflowData.On) && isDiscussionWorkflow(workflowData.On) {
-		// Mixed workflows with issue and discussion triggers: use issue/discussion number
-		keys = append(keys, "${{ github.event.issue.number || github.event.discussion.number }}")
-	} else if isPullRequestWorkflow(workflowData.On) {
-		// Pure PR workflows: use PR number if available, otherwise fall back to ref for compatibility
-		keys = append(keys, "${{ github.event.pull_request.number || github.ref }}")
-	} else if isIssueWorkflow(workflowData.On) {
-		// Issue workflows: use issue number
-		keys = append(keys, "${{ github.event.issue.number }}")
-	} else if isDiscussionWorkflow(workflowData.On) {
-		// Discussion workflows: use discussion number
-		keys = append(keys, "${{ github.event.discussion.number }}")
-	} else if isPushWorkflow(workflowData.On) {
-		// Push workflows: use ref to differentiate between branches
-		keys = append(keys, "${{ github.ref }}")
 	}
+	// All other workflows: sequentialize per workflow (no event-specific keys)
 
 	return keys
 }