Rename test runner to scripts/test

Author: skarim

.github/copilot-instructions.md

@@ -10,7 +10,7 @@ Repository operations require Git 2.36+.
 go mod download                  # install deps
 go build -o gh-stack .           # build
 go vet ./...                     # static analysis. Always run before tests.
-go run ./scripts/testsuite -workers 4 # full race-enabled suite in isolated processes
+go run ./scripts/test -workers 4 # full race-enabled suite in isolated processes
 ```
 
 Run vet before tests. See [CONTRIBUTING.md](../CONTRIBUTING.md#test) for canonical/targeted commands and runner details. Do not add `t.Parallel` to tests that change Git mocks, cwd, or environment variables.

.github/workflows/test.yml

@@ -36,7 +36,7 @@ jobs:
         run: go vet ./...
       - name: Test
         run: >-
-          go run ./scripts/testsuite
+          go run ./scripts/test
           -workers ${{ matrix.workers }}
           -shard ${{ matrix.shard }}
           -shards ${{ matrix.shards }}
@@ -70,4 +70,4 @@ jobs:
           pattern: tests-*
           path: ${{ runner.temp }}/test-results
       - name: Verify full platform inventories
-        run: go run ./scripts/testsuite -verify "${{ runner.temp }}/test-results"
+        run: go run ./scripts/test -verify "${{ runner.temp }}/test-results"

AGENTS.md

@@ -10,7 +10,7 @@ Repository operations require Git 2.36 or later.
 go mod download                  # install dependencies
 go build -o gh-stack .           # build (produces ./gh-stack binary)
 go vet ./...                     # static analysis. Run before tests.
-go run ./scripts/testsuite -workers 4 # full race-enabled suite in isolated processes
+go run ./scripts/test -workers 4 # full race-enabled suite in isolated processes
 ```
 
 Always run `go vet` before tests. See [CONTRIBUTING.md](CONTRIBUTING.md#test) for the alternative canonical `go test` command, targeted tests, and timing artifacts. CI runs the full platform-applicable suite with race detection on Linux, macOS, and Windows, with a cross-shard completion gate.

CONTRIBUTING.md

@@ -44,7 +44,7 @@ go vet ./...
 For process-isolated parallel execution:
 
 ```sh
-go run ./scripts/testsuite -workers 4
+go run ./scripts/test -workers 4
 ```
 
 Alternatively, use the canonical Go command:
@@ -70,7 +70,7 @@ To run a package or a specific regression:
 
 ```sh
 go vet ./internal/modify
-go run ./scripts/testsuite -workers 4 ./internal/modify
+go run ./scripts/test -workers 4 ./internal/modify
 
 go vet ./cmd
 go test -race -count=1 -timeout=30m -run '^TestRebase_Worktrees' ./cmd
@@ -80,7 +80,7 @@ CI partitions the full suite across Windows and macOS jobs. The `Tests complete`
 check verifies that every platform has a complete, consistent set of successful
 shards. Missing results, failures, or cancelled shards fail the check. Test
 membership comes from Go's test binaries, not the advisory scheduling weights in
-`scripts/testsuite/timings.go`; newly added tests are included automatically.
+`scripts/test/timings.go`; newly added tests are included automatically.
 
 ## Vet
 
@@ -122,7 +122,7 @@ npm run build     # Production build to docs/dist/
 1. Create a new branch: `git checkout -b my-branch-name`
 1. Make your change and add tests
 1. Make sure vet passes: `go vet ./...`
-1. Make sure tests pass: `go run ./scripts/testsuite -workers 4` (or the canonical command above)
+1. Make sure tests pass: `go run ./scripts/test -workers 4` (or the canonical command above)
 1. Push to your fork and [submit a pull request][pr]
 
 Here are a few things you can do that will increase the likelihood of your pull request being accepted: