enhance(actions): show the steps the runner reports (#39720)

Gitea derives the steps of a job from the workflow file, so the `pre`
and `post` steps of actions only show up inside "Set up job" and
"Complete job".
Fixes https://github.com/go-gitea/gitea/issues/24604.

A runner can now report the steps it actually runs, and Gitea shows
those instead. Runners that don't report them keep the current view, and
older Gitea versions ignore them.

Related:
- Proto: https://gitea.com/gitea/actions-proto-def/pulls/19
- Runner: https://gitea.com/gitea/runner/pulls/1293

modelmigration/migrations.go

@@ -435,6 +435,7 @@ func prepareMigrationTasks() []*migration {
 		newMigration(356, "Add index on action_run commit_sha", v29.AddActionRunCommitSHAIndex),
 		newMigration(357, "Normalize legacy team authorize values", v29.NormalizeLegacyTeamAuthorize),
 		newMigration(358, "Track previous remember-me token hashes", v29.AddPreviousAuthTokenHash),
+		newMigration(359, "Add stage and number columns to action_task_step", v29.AddStageAndNumberToActionTaskStep),
 	}
 	return preparedMigrations
 }

modelmigration/v29/v359.go

@@ -0,0 +1,25 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v29
+
+import (
+	"context"
+
+	"gitea.dev/modelmigration/base"
+
+	"xorm.io/xorm"
+)
+
+func AddStageAndNumberToActionTaskStep(_ context.Context, x base.EngineMigration) error {
+	type ActionTaskStep struct {
+		Stage  int64 `xorm:"NOT NULL DEFAULT 0"`
+		Number int64 `xorm:"NOT NULL DEFAULT 0"`
+	}
+
+	_, err := x.SyncWithOptions(xorm.SyncOptions{
+		IgnoreConstrains:  true,
+		IgnoreDropIndices: true,
+	}, new(ActionTaskStep))
+	return err
+}