From dc49f80d231aa019e754261dcb775a72d16cb2d6 Mon Sep 17 00:00:00 2001
From: Probe Test <probe@example.com>
Date: Thu, 23 Jul 2026 03:55:33 -0300
Subject: [PATCH] fix(dashboard): keep Compression Studio last after the
 exclusions page was added

Base-red slice 5. #8034/#8064 (per-model/endpoint compression exclusion filter)
appended the new `compression-exclusions` sidebar item to the END of the compression
group, after `compression-studio`. That broke the deliberate "Compression Studio is
the last item of the compression group" invariant asserted by two tests
(sidebar-engine-items "Studio must be last" and sidebar-visibility's exact-order array,
whose expected list places compression-studio immediately before cli-code).

Rather than weaken the invariant, moved `compression-exclusions` ABOVE
`compression-studio` in sections.ts (new pages go above the Studio showcase) and added
the new item to sidebar-visibility's expected order. Both tests, plus the other four
sidebar suites (reorg / back-compat / tools / engine-items), stay green.
---
 .../constants/sidebarVisibility/sections.ts   | 20 ++++++++++---------
 tests/unit/sidebar-visibility.test.ts         |  1 +
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/src/shared/constants/sidebarVisibility/sections.ts b/src/shared/constants/sidebarVisibility/sections.ts
index 3f817e246243..c2c168c350d1 100644
--- a/src/shared/constants/sidebarVisibility/sections.ts
+++ b/src/shared/constants/sidebarVisibility/sections.ts
@@ -188,15 +188,6 @@ export const COMPRESSION_CONTEXT_GROUP: SidebarItemGroup = {
       subtitleFallback: "Context-as-image",
       icon: "grain",
     },
-    {
-      id: "compression-studio",
-      href: "/dashboard/compression/studio",
-      i18nKey: "compressionStudio",
-      labelFallback: "Compression Studio",
-      subtitleKey: "compressionStudioSubtitle",
-      subtitleFallback: "Live engine cascade",
-      icon: "monitoring",
-    },
     {
       id: "compression-exclusions",
       href: "/dashboard/compression/exclusions",
@@ -206,6 +197,17 @@ export const COMPRESSION_CONTEXT_GROUP: SidebarItemGroup = {
       subtitleFallback: "Per-model/endpoint bypass",
       icon: "block",
     },
+    // Compression Studio stays the final showcase item of the compression group
+    // (sidebar-engine-items "Studio must be last" invariant); new pages go above it.
+    {
+      id: "compression-studio",
+      href: "/dashboard/compression/studio",
+      i18nKey: "compressionStudio",
+      labelFallback: "Compression Studio",
+      subtitleKey: "compressionStudioSubtitle",
+      subtitleFallback: "Live engine cascade",
+      icon: "monitoring",
+    },
   ],
 };
 
diff --git a/tests/unit/sidebar-visibility.test.ts b/tests/unit/sidebar-visibility.test.ts
index 721e00e29ba7..eb6896c39227 100644
--- a/tests/unit/sidebar-visibility.test.ts
+++ b/tests/unit/sidebar-visibility.test.ts
@@ -57,6 +57,7 @@ test("primary sidebar items place limits after cache", () => {
       "context-aggressive",
       "context-ultra",
       "context-omniglyph",
+      "compression-exclusions",
       "compression-studio",
       "cli-code",
       "cli-agents",