fix: Sort action run jobs by JobID and Name with matrix examples (#37046)

Fix the sorting of jobs out of a matrix

## Before
<img width="415" height="487" alt="grafik"
src="https://github.com/user-attachments/assets/b628adb9-9158-4106-89f1-d8ecaa98f17d"
/>


## After

<img width="423" height="365" alt="grafik"
src="https://github.com/user-attachments/assets/d26223d5-96da-4bdc-bbfe-389101d28cc8"
/>

---------

Signed-off-by: Nicolas <bircni@icloud.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>

models/actions/run_job_list.go

@@ -5,9 +5,11 @@ package actions
 
 import (
 	"context"
+	"slices"
 
 	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
+	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/container"
 	"code.gitea.io/gitea/modules/optional"
 	"code.gitea.io/gitea/modules/timeutil"
@@ -23,6 +25,22 @@ func (jobs ActionJobList) GetRunIDs() []int64 {
 	})
 }
 
+// SortMatrixGroupsByName natural-sorts each contiguous run of jobs that share a JobID
+// so matrix expansions (e.g. "test (1)", "test (2)", "test (10)") appear in human order.
+// Input is expected to be in DB id order so JobID groups are contiguous; cross-group order is preserved.
+func (jobs ActionJobList) SortMatrixGroupsByName() {
+	for i := 0; i < len(jobs); {
+		j := i + 1
+		for j < len(jobs) && jobs[j].JobID == jobs[i].JobID {
+			j++
+		}
+		slices.SortFunc(jobs[i:j], func(a, b *ActionRunJob) int {
+			return base.NaturalSortCompare(a.Name, b.Name)
+		})
+		i = j
+	}
+}
+
 func (jobs ActionJobList) LoadRepos(ctx context.Context) error {
 	repoIDs := container.FilterSlice(jobs, func(j *ActionRunJob) (int64, bool) {
 		return j.RepoID, j.RepoID != 0 && j.Repo == nil

models/actions/run_job_list_test.go

@@ -0,0 +1,61 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package actions
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestActionJobList_SortMatrixGroupsByName(t *testing.T) {
+	mk := func(jobID, name string) *ActionRunJob {
+		return &ActionRunJob{JobID: jobID, Name: name}
+	}
+	names := func(jobs ActionJobList) []string {
+		out := make([]string, len(jobs))
+		for i, j := range jobs {
+			out[i] = j.Name
+		}
+		return out
+	}
+
+	t.Run("matrix group sorted naturally", func(t *testing.T) {
+		jobs := ActionJobList{
+			mk("build", "build"),
+			mk("test", "test (10)"),
+			mk("test", "test (2)"),
+			mk("test", "test (1)"),
+			mk("deploy", "deploy"),
+		}
+		jobs.SortMatrixGroupsByName()
+		assert.Equal(t, []string{"build", "test (1)", "test (2)", "test (10)", "deploy"}, names(jobs))
+	})
+
+	t.Run("non-adjacent same JobID stays in input order", func(t *testing.T) {
+		jobs := ActionJobList{
+			mk("test", "test (10)"),
+			mk("build", "build"),
+			mk("test", "test (1)"),
+		}
+		jobs.SortMatrixGroupsByName()
+		assert.Equal(t, []string{"test (10)", "build", "test (1)"}, names(jobs))
+	})
+
+	t.Run("groups stay in input order", func(t *testing.T) {
+		jobs := ActionJobList{
+			mk("z", "z"),
+			mk("a", "a"),
+		}
+		jobs.SortMatrixGroupsByName()
+		assert.Equal(t, []string{"z", "a"}, names(jobs))
+	})
+
+	t.Run("empty and singleton", func(t *testing.T) {
+		ActionJobList(nil).SortMatrixGroupsByName()
+		jobs := ActionJobList{mk("only", "only")}
+		jobs.SortMatrixGroupsByName()
+		assert.Equal(t, []string{"only"}, names(jobs))
+	})
+}

routers/api/v1/repo/action.go

@@ -1175,6 +1175,7 @@ func getCurrentRepoActionRunJobsByID(ctx *context.APIContext) (*actions_model.Ac
 		ctx.APIErrorInternal(err)
 		return nil, nil
 	}
+	jobs.SortMatrixGroupsByName()
 	return run, jobs
 }
 

routers/web/repo/actions/view.go

@@ -893,6 +893,7 @@ func getCurrentRunJobsByPathParam(ctx *context_module.Context) (*actions_model.A
 		ctx.NotFound(nil)
 		return nil, nil, nil
 	}
+	jobs.SortMatrixGroupsByName()
 
 	for _, job := range jobs {
 		job.Run = run