Revert "fix(ui): improve routine properties panel and history UX" (#5723)

## Thinking Path

> - Paperclip orchestrates AI agents through visible, governable task
and routine workflows.
> - The routines UI includes the routine detail page, properties panel,
history tab, and shared sidebar components.
> - PR #5703 changed that workflow by widening the routine properties
panel and moving revision inspection/comparison into dialogs.
> - The product direction for that change is being paused for now, so
the safest path is a direct revert instead of partial edits.
> - This pull request reverts merge commit
`74cb560c41` from #5703.
> - The benefit is restoring the prior routines UI behavior while
keeping the revert easy to review and re-apply later if needed.

## What Changed

- Reverted #5703: `fix(ui): improve routine properties panel and history
UX`.
- Restored the previous routine properties panel sizing, panel context
API, routine detail layout, and routine history rendering behavior.
- Removed the reverted sidebar pane test additions and restored the
previous focused routine history test expectations.

## Verification

- `git diff --check origin/master..HEAD`
- `pnpm vitest run ui/src/components/RoutineHistoryTab.test.tsx`
- `pnpm --filter @paperclipai/ui typecheck`

### Screenshots

This is a direct revert of #5703. The visual state after this PR
corresponds to the "Before" screenshots from #5703, and the state being
removed corresponds to the "After" screenshots from #5703.

#### Trigger Panel Width

| Before this revert | After this revert |
| --- | --- |
| <img width="1742" height="1288" alt="triggers-before-this-revert"
src="https://github.com/user-attachments/assets/9e818978-283c-49a3-9401-879be550c67b"
/> | <img width="1741" height="1289" alt="triggers-after-this-revert"
src="https://github.com/user-attachments/assets/2a391769-c355-4219-8da3-d1ea18698430"
/> |

#### History Panel

| Before this revert | After this revert |
| --- | --- |
| <img width="1741" height="1290" alt="history-before-this-revert"
src="https://github.com/user-attachments/assets/4c139238-8494-4438-89e1-4277d05bc3aa"
/> | <img width="1739" height="1289" alt="history-after-this-revert"
src="https://github.com/user-attachments/assets/eaea4f3d-bb65-4af6-b67f-3ba3026fe0c9"
/> |

## Risks

- Low technical risk: this is a clean Git revert of a recently merged
UI-only PR.
- Product risk: the routine properties panel and revision history return
to the older, narrower workflow that #5703 was improving.
- Re-application risk: future work that wants the #5703 behavior back
should re-apply it deliberately rather than cherry-picking around this
revert.

> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.

## Model Used

- OpenAI Codex, GPT-5 coding agent, tool-enabled with local shell and
GitHub CLI access. Context window size was not exposed in this session.

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable
- [x] If this change affects the UI, I have included before/after
screenshots
- [x] I have updated relevant documentation to reflect my changes
- [x] I have considered and documented any risks above
- [x] I will address all Greptile and reviewer comments before
requesting merge

Co-authored-by: Paperclip <noreply@paperclip.ing>

ui/src/pages/RoutineDetail.tsx

@@ -591,22 +591,22 @@ export function RoutineDetail() {
   const activityTabsPanel = useMemo(() => {
     if (!routine) return null;
     return (
-      <Tabs value={activeTab} onValueChange={setActiveTab} className="space-y-3 min-w-0">
-        <TabsList variant="line" className="w-full justify-start gap-1 overflow-x-auto">
-          <TabsTrigger value="triggers" className="gap-1.5 flex-none px-2">
+      <Tabs value={activeTab} onValueChange={setActiveTab} className="space-y-3">
+        <TabsList variant="line" className="w-full justify-start gap-1">
+          <TabsTrigger value="triggers" className="gap-1.5">
             <Clock3 className="h-3.5 w-3.5" />
             Triggers
           </TabsTrigger>
-          <TabsTrigger value="runs" className="gap-1.5 flex-none px-2">
+          <TabsTrigger value="runs" className="gap-1.5">
             <Play className="h-3.5 w-3.5" />
             Runs
             {hasLiveRun && <span className="h-2 w-2 rounded-full bg-blue-500 animate-pulse" />}
           </TabsTrigger>
-          <TabsTrigger value="activity" className="gap-1.5 flex-none px-2">
+          <TabsTrigger value="activity" className="gap-1.5">
             <ActivityIcon className="h-3.5 w-3.5" />
             Activity
           </TabsTrigger>
-          <TabsTrigger value="history" className="gap-1.5 flex-none px-2">
+          <TabsTrigger value="history" className="gap-1.5">
             <HistoryIcon className="h-3.5 w-3.5" />
             History
           </TabsTrigger>
@@ -815,14 +815,7 @@ export function RoutineDetail() {
       closePanel();
       return;
     }
-    openPanel(activityTabsPanel, {
-      storageKey: "paperclip.properties.width.routines",
-      defaultWidth: 400,
-      minWidth: 320,
-      maxWidth: 640,
-      compactBelowViewport: 1024,
-      compactMaxWidth: 320,
-    });
+    openPanel(activityTabsPanel);
     return () => closePanel();
   }, [activityTabsPanel, closePanel, openPanel]);
 
@@ -861,7 +854,7 @@ export function RoutineDetail() {
   return (
     <div className="max-w-2xl space-y-6">
       {/* Header: editable title + actions */}
-      <div className="flex flex-col items-stretch gap-3 min-[1120px]:flex-row min-[1120px]:items-start min-[1120px]:gap-4">
+      <div className="flex items-start gap-4">
         <div className="min-w-0 flex-1 space-y-2">
           <textarea
             ref={titleInputRef}
@@ -900,7 +893,7 @@ export function RoutineDetail() {
             </Badge>
           ) : null}
         </div>
-        <div className="flex w-full shrink-0 flex-wrap items-center gap-3 pt-1 min-[1120px]:w-auto min-[1120px]:flex-nowrap">
+        <div className="flex shrink-0 items-center gap-3 pt-1">
           <RunButton
             onClick={() => {
               setRunVariablesOpen(true);
@@ -935,7 +928,6 @@ export function RoutineDetail() {
               panelVisible ? "opacity-0 pointer-events-none w-0 overflow-hidden" : "opacity-100",
             )}
             onClick={() => setPanelVisible(true)}
-            aria-label="Show triggers, runs and activity"
             title="Show triggers, runs and activity"
           >
             <SlidersHorizontal className="h-4 w-4" />