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

templates/shared/actions/runner_edit.tmpl

@@ -10,6 +10,16 @@
 					<label>{{ctx.Locale.Tr "actions.runners.status"}}</label>
 					<span class="ui {{if .Runner.IsOnline}}green{{else}}basic{{end}} label">{{.Runner.StatusLocaleName ctx.Locale}}</span>
 				</div>
+				<div class="field tw-inline-block tw-mr-4">
+					<label>{{ctx.Locale.Tr "actions.runners.availability"}}</label>
+					<span class="ui {{if .Runner.IsDisabled}}grey{{else}}green{{end}} label">
+						{{if .Runner.IsDisabled}}
+							{{ctx.Locale.Tr "disabled"}}
+						{{else}}
+							{{ctx.Locale.Tr "enabled"}}
+						{{end}}
+					</span>
+				</div>
 				<div class="field tw-inline-block tw-mr-4">
 					<label>{{ctx.Locale.Tr "actions.runners.last_online"}}</label>
 					<span>{{if .Runner.LastOnline}}{{DateUtils.TimeSince .Runner.LastOnline}}{{else}}{{ctx.Locale.Tr "never"}}{{end}}</span>
@@ -39,6 +49,9 @@
 
 			<div class="field">
 				<button class="ui primary button" data-url="{{.Link}}">{{ctx.Locale.Tr "actions.runners.update_runner"}}</button>
+				<button type="button" class="ui button link-action" data-url="{{.Link}}/update-runner?disabled={{not .Runner.IsDisabled}}">
+					{{if .Runner.IsDisabled}}{{ctx.Locale.Tr "actions.runners.enable_runner"}}{{else}}{{ctx.Locale.Tr "actions.runners.disable_runner"}}{{end}}
+				</button>
 				<button class="ui red button delete-button" data-url="{{.Link}}/delete" data-modal="#runner-delete-modal">
 					{{ctx.Locale.Tr "actions.runners.delete_runner"}}</button>
 			</div>

templates/shared/actions/runner_list.tmpl

@@ -66,7 +66,10 @@
 			<tbody>
 				{{range .Runners}}
 					<tr>
-						<td><span class="ui label {{if .IsOnline}}green{{end}}">{{.StatusLocaleName ctx.Locale}}</span></td>
+						<td>
+							<span class="ui label {{if .IsOnline}}green{{end}}">{{.StatusLocaleName ctx.Locale}}</span>
+							{{if .IsDisabled}}<span class="ui grey label">{{ctx.Locale.Tr "actions.runners.disabled"}}</span>{{end}}
+						</td>
 						<td>{{.ID}}</td>
 						<td><p data-tooltip-content="{{.Description}}">{{.Name}}</p></td>
 						<td>{{if .Version}}{{.Version}}{{else}}{{ctx.Locale.Tr "unknown"}}{{end}}</td>