feat(actions): update actionslib, support self:, misc fixes (#39358)

Updates actionslib to https://gitea.com/gitea/actionslib/releases/tag/v1.2.1, moves workflow
parsing into it and aligns behaviour with GitHub.

1. `uses:` supports `self:` (Gitea-only feature) and `$/` paths.
1. `strategy`, `matrix`, `max-parallel` and `fail-fast` accept
expressions, including over `needs`. A job whose `name`, `runs-on` or
`continue-on-error` reads `needs` is resolved once they finish.
1. A job `if:` may only read `github`, `needs`, `vars` and `inputs` and
is decided before the matrix, as on github.com.
1. Matrix `fail-fast` cancels the other combinations, and `always()`
jobs keep running when a run is cancelled.
1. Invalid workflow files, including a malformed `on:` and unknown or
cyclic `needs`, show up on push as failed runs with the error.
1. A job whose `if:` or `concurrency:` fails to evaluate is skipped or
failed with the error, instead of staying blocked.
1. Reusable workflows: a missing and an unreadable repository fail
alike, public callers cannot use private workflows, nested jobs cannot
exceed the caller's token permissions.
1. Runner labels match case-insensitively, and `runs-on` accepts an
array from an expression.

Runner PR: https://gitea.com/gitea/runner/pulls/1247
Docs PR: https://gitea.com/gitea/docs/pulls/553
Fixes: https://github.com/go-gitea/gitea/issues/38990
Fixes: https://github.com/go-gitea/gitea/issues/39382
Fixes: https://github.com/go-gitea/gitea/issues/32364
Fixes: https://github.com/go-gitea/gitea/issues/36077
Fixes: https://github.com/go-gitea/gitea/issues/23277
Fixes: https://github.com/go-gitea/gitea/issues/29020
Co-authored-by: Claude (Opus 5) <noreply@anthropic.com>
Co-authored-by: Zettat123 <zettat123@gmail.com>

routers/web/shared/actions/scoped_workflows.go

@@ -181,7 +181,7 @@ func deriveScopedStatusContexts(prefix, displayName string, content []byte, even
 		if job == nil {
 			continue
 		}
-		jobName := util.EllipsisDisplayString(job.Name, 255) // run creation truncates job names the same way
+		jobName := job.DisplayName()
 		for _, ev := range eventNames {
 			ctxName := actions_module.ScopedWorkflowStatusContextName(prefix, displayName, jobName, ev)
 			if seen.Contains(ctxName) {

routers/web/shared/actions/scoped_workflows_test.go

@@ -13,7 +13,7 @@ import (
 )
 
 func TestDeriveScopedStatusContexts(t *testing.T) {
-	t.Run("jobs x events; job name is its name: or its id", func(t *testing.T) {
+	t.Run("jobs x events; job name is its unescaped name: or its id", func(t *testing.T) {
 		content := []byte(`name: CI
 on: [push, pull_request]
 jobs:
@@ -26,6 +26,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - run: echo
+  test:
+    name: "${{ matrix.os }} ${{ '${{' }}"
+    strategy:
+      matrix:
+        os: [linux]
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo
 `)
 		events, err := actions_module.GetEventsFromContent(content)
 		require.NoError(t, err)
@@ -35,6 +43,8 @@ jobs:
 			"org/src: CI / lint (pull_request)",
 			"org/src: CI / Build It (push)",
 			"org/src: CI / Build It (pull_request)",
+			"org/src: CI / linux ${{ (push)",
+			"org/src: CI / linux ${{ (pull_request)",
 		}, got)
 	})