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

routers/api/v1/repo/action.go

@@ -554,6 +554,11 @@ func (Action) ListRunners(ctx *context.APIContext) {
 	//   description: name of the repo
 	//   type: string
 	//   required: true
+	// - name: disabled
+	//   in: query
+	//   description: filter by disabled status (true or false)
+	//   type: boolean
+	//   required: false
 	// responses:
 	//   "200":
 	//     "$ref": "#/definitions/ActionRunnersResponse"
@@ -564,11 +569,11 @@ func (Action) ListRunners(ctx *context.APIContext) {
 	shared.ListRunners(ctx, 0, ctx.Repo.Repository.ID)
 }
 
-// GetRunner get an repo-level runner
+// GetRunner get a repo-level runner
 func (Action) GetRunner(ctx *context.APIContext) {
 	// swagger:operation GET /repos/{owner}/{repo}/actions/runners/{runner_id} repository getRepoRunner
 	// ---
-	// summary: Get an repo-level runner
+	// summary: Get a repo-level runner
 	// produces:
 	// - application/json
 	// parameters:
@@ -597,11 +602,11 @@ func (Action) GetRunner(ctx *context.APIContext) {
 	shared.GetRunner(ctx, 0, ctx.Repo.Repository.ID, ctx.PathParamInt64("runner_id"))
 }
 
-// DeleteRunner delete an repo-level runner
+// DeleteRunner delete a repo-level runner
 func (Action) DeleteRunner(ctx *context.APIContext) {
 	// swagger:operation DELETE /repos/{owner}/{repo}/actions/runners/{runner_id} repository deleteRepoRunner
 	// ---
-	// summary: Delete an repo-level runner
+	// summary: Delete a repo-level runner
 	// produces:
 	// - application/json
 	// parameters:
@@ -630,6 +635,47 @@ func (Action) DeleteRunner(ctx *context.APIContext) {
 	shared.DeleteRunner(ctx, 0, ctx.Repo.Repository.ID, ctx.PathParamInt64("runner_id"))
 }
 
+// UpdateRunner update a repo-level runner
+func (Action) UpdateRunner(ctx *context.APIContext) {
+	// swagger:operation PATCH /repos/{owner}/{repo}/actions/runners/{runner_id} repository updateRepoRunner
+	// ---
+	// summary: Update a repo-level runner
+	// consumes:
+	// - application/json
+	// produces:
+	// - application/json
+	// parameters:
+	// - name: owner
+	//   in: path
+	//   description: owner of the repo
+	//   type: string
+	//   required: true
+	// - name: repo
+	//   in: path
+	//   description: name of the repo
+	//   type: string
+	//   required: true
+	// - name: runner_id
+	//   in: path
+	//   description: id of the runner
+	//   type: string
+	//   required: true
+	// - name: body
+	//   in: body
+	//   schema:
+	//     "$ref": "#/definitions/EditActionRunnerOption"
+	// responses:
+	//   "200":
+	//     "$ref": "#/definitions/ActionRunner"
+	//   "400":
+	//     "$ref": "#/responses/error"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "422":
+	//     "$ref": "#/responses/validationError"
+	shared.UpdateRunner(ctx, 0, ctx.Repo.Repository.ID, ctx.PathParamInt64("runner_id"))
+}
+
 // GetWorkflowRunJobs Lists all jobs for a workflow run.
 func (Action) ListWorkflowJobs(ctx *context.APIContext) {
 	// swagger:operation GET /repos/{owner}/{repo}/actions/jobs repository listWorkflowJobs