fix(webapp): truncate task title in landing page side menu

Long task names in the side menu heading pushed the Test button off the
panel edge instead of truncating. The header row is a grid item whose
default min-width let it grow to the full title width, so the title never
truncated. Add min-w-0 to the header container so it shrinks to the panel
and the title truncates with an ellipsis. The scheduled task page already
did this; this brings the standard and agent task pages in line.

Author: samejr

.server-changes/task-landing-title-truncate.md

@@ -0,0 +1,6 @@
+---
+area: webapp
+type: fix
+---
+
+Truncate long task names in the task landing page side menu so they no longer push the Test button off the edge.

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.agents.$agentParam/route.tsx

@@ -431,7 +431,7 @@ function AgentDetailSidebar({
 
   return (
     <div className="grid h-full grid-rows-[auto_1fr] overflow-hidden bg-background-bright">
-      <div className="flex items-center gap-2 border-b border-grid-dimmed py-2 pl-3 pr-2">
+      <div className="flex min-w-0 items-center gap-2 border-b border-grid-dimmed py-2 pl-3 pr-2">
         <Header2 className="flex min-w-0 flex-1 items-center gap-1.5">
           <CubeSparkleIcon className="size-4.5 shrink-0 text-agents" />
           <span className="truncate">{agent.slug}</span>

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.tasks.standard.$taskParam/route.tsx

@@ -247,7 +247,7 @@ function TaskDetailSidebar({
 
   return (
     <div className="grid h-full grid-rows-[auto_1fr] overflow-hidden bg-background-bright">
-      <div className="flex items-center gap-2 border-b border-grid-dimmed py-2 pl-3 pr-2">
+      <div className="flex min-w-0 items-center gap-2 border-b border-grid-dimmed py-2 pl-3 pr-2">
         <Header2 className="flex min-w-0 flex-1 items-center gap-1.5">
           <TaskIcon className="size-4.5 shrink-0 text-tasks" />
           <span className="truncate">{task.slug}</span>