fix: add merge_group triggers to critical workflows for merge queue (#2027)

# Fix GitHub merge queue workflow re-execution

## Summary

This PR fixes the GitHub merge queue configuration to properly re-run
workflows before merging. Previously, when PRs were added to the merge
queue, GitHub workflows were not being executed, causing the merge queue
to bypass critical checks.

**Key Changes:**
- Added `merge_group:` event triggers to 14 critical workflow files so
merge queue re-runs workflows before merging
- Maintained original `merge-queue.yml` configuration with
`status-success~=.*` pattern for individual workflow management
- Removed consolidated status check approach per user feedback (user
prefers manual configuration of individual required checks)

**Workflow files modified:** `lints.yml`, `build.yml`, `vm.yml`,
`cli.yml`, `primitives.yml`, `sdk.yml`, `recursion.yml`,
`extension-tests.yml`, `riscv.yml`, `guest-lib-tests.yml`,
`benchmarks.yml`, `benchmarks-execute.yml`, `docs.yml`,
`native-compiler.yml`

## Review & Testing Checklist for Human

- [ ] **End-to-end merge queue testing**: Enable merge queue in
repository settings, create a test PR, add to merge queue, and verify
all workflows re-run before merging to main
- [ ] **Verify workflow trigger completeness**: Confirm all critical
workflows that should run during merge queue have `merge_group:`
triggers added
- [ ] **Test individual required check setup**: Add specific workflows
as required checks in branch protection rules and verify they work with
merge queue
- [ ] **Check for unintended workflow execution**: Verify `merge_group:`
triggers don't cause workflows to run in unexpected scenarios
- [ ] **Validate workflow selection**: Review the 14 modified workflows
to ensure they represent the critical checks needed for merge safety

**Recommended test plan**: Enable merge queue in repository settings →
create test PR with small change → add to merge queue → observe workflow
re-execution → verify automatic merge only after all checks pass.

---

### Diagram

```mermaid
%%{ init : { "theme" : "default" }}%%
graph TD
    MergeQueue["GitHub<br/>Merge Queue"] --> WorkflowFiles["14 Modified<br/>Workflow Files"]:::minor-edit
    MergeQueue --> MergeQueueConfig["merge-queue.yml<br/>(No Changes)"]:::context
    
    WorkflowFiles --> MergeGroupTrigger["merge_group:<br/>triggers added"]
    
    WorkflowFiles --> Lints["lints.yml"]:::minor-edit
    WorkflowFiles --> Build["build.yml"]:::minor-edit  
    WorkflowFiles --> VM["vm.yml"]:::minor-edit
    WorkflowFiles --> CLI["cli.yml"]:::minor-edit
    WorkflowFiles --> OtherWorkflows["+ 10 other<br/>workflows"]:::minor-edit
    
    MergeQueueConfig --> StatusPattern["status-success~=.*<br/>(Requires all checks)"]
    
    BranchProtection["Branch Protection<br/>Rules"]:::context --> IndividualChecks["Individual Required<br/>Checks (Manual Setup)"]:::context
    
    subgraph Legend
        L1["Major Edit"]:::major-edit
        L2["Minor Edit"]:::minor-edit
        L3["Context/No Edit"]:::context
    end
    
    classDef major-edit fill:#90EE90
    classDef minor-edit fill:#87CEEB  
    classDef context fill:#FFFFFF
```

### Notes


- **Communication issue resolved**: Initially implemented a consolidated
status check approach that user didn't want; reverted to individual
workflow management per feedback
- **Testing limitation**: Cannot test merge queue functionality
end-to-end without repository settings access - requires human
verification
- **Maintenance consideration**: If new critical workflows are added,
they will need `merge_group:` triggers added manually
- **Session info**: Requested by @jonathanpwang, Link to Devin run:
https://app.devin.ai/sessions/e3a24a93e1f9454c866f2b77f11c5704

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Jonathan Wang <[email protected]>

Author: devin-ai-integration[bot]

.github/workflows/benchmarks-execute.yml

@@ -17,6 +17,7 @@ on:
       - "extensions/**"
       - "Cargo.toml"
       - ".github/workflows/benchmarks-execute.yml"
+  merge_group:
   workflow_dispatch:
 
 concurrency:

.github/workflows/benchmarks.yml

@@ -17,6 +17,7 @@ on:
       - ".github/workflows/benchmark-call.yml"
       - ".github/workflows/benchmarks.yml"
       - "Cargo.toml"
+  merge_group:
   workflow_dispatch:
     inputs:
       flamegraphs:

.github/workflows/build.yml

@@ -5,6 +5,7 @@ on:
     branches: ["main"]
   pull_request:
     branches: ["**"]
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}

.github/workflows/cli.yml

@@ -15,6 +15,7 @@ on:
       - "examples/**"
       - "Cargo.toml"
       - ".github/workflows/cli.yml"
+  merge_group:
   workflow_dispatch:
     inputs:
       use_local_openvm:

.github/workflows/docs.yml

@@ -9,6 +9,7 @@ on:
     branches: [main]
     paths:
       - ".github/workflows/docs.yml"
+  merge_group:
 
 env:
   CARGO_NET_GIT_FETCH_WITH_CLI: true

.github/workflows/extension-tests.yml

@@ -12,6 +12,7 @@ on:
       - "extensions/**"
       - "Cargo.toml"
       - ".github/workflows/extension-tests.yml"
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}

.github/workflows/guest-lib-tests.yml

@@ -14,6 +14,7 @@ on:
       - "Cargo.toml"
       - ".github/workflows/guest-lib-tests.yml"
       - "crates/sdk/guest/fib/**"
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}

.github/workflows/lints.yml

@@ -5,6 +5,7 @@ on:
     branches: ["main"]
   pull_request:
     branches: ["**"]
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}

.github/workflows/native-compiler.yml

@@ -11,6 +11,7 @@ on:
       - "extensions/native/compiler/**"
       - "Cargo.toml"
       - ".github/workflows/native-compiler.yml"
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}

.github/workflows/primitives.yml

@@ -12,6 +12,7 @@ on:
       - "crates/circuits/mod-builder/**"
       - "Cargo.toml"
       - ".github/workflows/primitives.yml"
+  merge_group:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}