Feature: Add per-runner “Disable/Pause” (#36776)

This PR adds per-runner disable/enable support for Gitea Actions so a
registered runner can be paused from picking up new jobs without
unregistering.

Disabled runners stay registered and online but are excluded from new
task assignment; running tasks are allowed to finish. Re-enabling
restores pickup, and runner list/get responses now expose disabled
state.

Also added an endpoint for testing
http://localhost:3000/devtest/runner-edit/enable

<img width="1509" height="701" alt="Bildschirmfoto 2026-02-27 um 22 13
24"
src="https://github.com/user-attachments/assets/5328eda9-e59c-46b6-b398-f436e50ee3da"
/>


Fixes: https://github.com/go-gitea/gitea/issues/36767

services/actions/interface.go

@@ -31,6 +31,8 @@ type API interface {
 	GetRunner(*context.APIContext)
 	// DeleteRunner delete runner
 	DeleteRunner(*context.APIContext)
+	// UpdateRunner update runner
+	UpdateRunner(*context.APIContext)
 	// ListWorkflowJobs list jobs
 	ListWorkflowJobs(*context.APIContext)
 	// ListWorkflowRuns list runs

services/actions/task.go

@@ -24,6 +24,10 @@ func PickTask(ctx context.Context, runner *actions_model.ActionRunner) (*runnerv
 		actionTask *actions_model.ActionTask
 	)
 
+	if runner.IsDisabled {
+		return nil, false, nil
+	}
+
 	if runner.Ephemeral {
 		var task actions_model.ActionTask
 		has, err := db.GetEngine(ctx).Where("runner_id = ?", runner.ID).Get(&task)

services/convert/convert.go

@@ -521,6 +521,7 @@ func ToActionRunner(ctx context.Context, runner *actions_model.ActionRunner) *ap
 		Name:      runner.Name,
 		Status:    apiStatus,
 		Busy:      status == runnerv1.RunnerStatus_RUNNER_STATUS_ACTIVE,
+		Disabled:  runner.IsDisabled,
 		Ephemeral: runner.Ephemeral,
 		Labels:    labels,
 	}