feat(actions): add branch filters to run list (#37826)

## Summary

- Add a Branch filter dropdown to the repo Actions run list web UI
- Wire `?branch=` query param through the web handler, matching the
existing REST API filter behavior
- Source the Branch dropdown from the indexed `branch` table (filtering
out deleted branches) instead of scanning `action_run.ref`, addressing
review feedback about unindexed columns

The Event filter was dropped after review: a static list of supported
events was noisy as UX, and querying distinct values from
`action_run.trigger_event` is slow because the column is not indexed.
`FindRunOptions.TriggerEvent` is kept for the REST API.

Closes #25042

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

routers/web/repo/actions/actions.go

@@ -7,7 +7,9 @@ import (
 	"bytes"
 	stdCtx "context"
 	"errors"
+	"fmt"
 	"net/http"
+	"net/url"
 	"slices"
 	"strings"
 
@@ -286,6 +288,7 @@ func prepareWorkflowList(ctx *context.Context, workflows []WorkflowInfo, otherWo
 	actorID := ctx.FormInt64("actor")
 	status := ctx.FormInt("status")
 	workflowID := ctx.FormString("workflow")
+	branch := ctx.FormString("branch")
 	page := ctx.FormInt("page")
 	if page <= 0 {
 		page = 1
@@ -295,7 +298,8 @@ func prepareWorkflowList(ctx *context.Context, workflows []WorkflowInfo, otherWo
 	// they will be 0 by default, which indicates get all status or actors
 	ctx.Data["CurActor"] = actorID
 	ctx.Data["CurStatus"] = status
-	if actorID > 0 || status > int(actions_model.StatusUnknown) {
+	ctx.Data["CurBranch"] = branch
+	if actorID > 0 || status > int(actions_model.StatusUnknown) || branch != "" {
 		ctx.Data["IsFiltered"] = true
 	}
 
@@ -313,6 +317,9 @@ func prepareWorkflowList(ctx *context.Context, workflows []WorkflowInfo, otherWo
 	if actions_model.Status(status) != actions_model.StatusUnknown {
 		opts.Status = []actions_model.Status{actions_model.Status(status)}
 	}
+	if branch != "" {
+		opts.Ref = string(git.RefNameFromBranch(branch))
+	}
 
 	runs, total, err := db.FindAndCount[actions_model.ActionRun](ctx, opts)
 	if err != nil {
@@ -393,6 +400,13 @@ func prepareWorkflowList(ctx *context.Context, workflows []WorkflowInfo, otherWo
 
 	ctx.Data["StatusInfoList"] = actions_model.GetStatusInfoList(ctx, ctx.Locale)
 
+	runBranches, err := actions_model.GetRunBranches(ctx, ctx.Repo.Repository.ID)
+	if err != nil {
+		ctx.ServerError("GetRunBranches", err)
+		return
+	}
+	ctx.Data["RunBranches"] = runBranches
+
 	pager := context.NewPagination(total, opts.PageSize, opts.Page, 5)
 	pager.AddParamFromRequest(ctx.Req)
 	ctx.Data["Page"] = pager
@@ -509,3 +523,13 @@ func decodeNode(node yaml.Node, out any) bool {
 	}
 	return true
 }
+
+func actionsListRedirectURL(repoLink, workflow, actor, status, branch string) string {
+	return fmt.Sprintf("%s/actions?workflow=%s&actor=%s&status=%s&branch=%s",
+		repoLink,
+		url.QueryEscape(workflow),
+		url.QueryEscape(actor),
+		url.QueryEscape(status),
+		url.QueryEscape(branch),
+	)
+}

routers/web/repo/actions/view.go

@@ -1103,14 +1103,14 @@ func disableOrEnableWorkflowFile(ctx *context_module.Context, isEnable bool) {
 		ctx.Flash.Success(ctx.Tr("actions.workflow.disable_success", workflow))
 	}
 
-	redirectURL := fmt.Sprintf("%s/actions?workflow=%s&actor=%s&status=%s", ctx.Repo.RepoLink, url.QueryEscape(workflow),
-		url.QueryEscape(ctx.FormString("actor")), url.QueryEscape(ctx.FormString("status")))
+	redirectURL := actionsListRedirectURL(ctx.Repo.RepoLink, workflow,
+		ctx.FormString("actor"), ctx.FormString("status"), ctx.FormString("branch"))
 	ctx.JSONRedirect(redirectURL)
 }
 
 func Run(ctx *context_module.Context) {
-	redirectURL := fmt.Sprintf("%s/actions?workflow=%s&actor=%s&status=%s", ctx.Repo.RepoLink, url.QueryEscape(ctx.FormString("workflow")),
-		url.QueryEscape(ctx.FormString("actor")), url.QueryEscape(ctx.FormString("status")))
+	redirectURL := actionsListRedirectURL(ctx.Repo.RepoLink, ctx.FormString("workflow"),
+		ctx.FormString("actor"), ctx.FormString("status"), ctx.FormString("branch"))
 
 	workflowID := ctx.FormString("workflow")
 	if len(workflowID) == 0 {