fix(editor): let mouse hide/re-show the shared query results pane

apps/desktop/src/components/layout/ContentArea.vue

@@ -664,6 +664,21 @@ function toggleResultsPane(): boolean {
   return true;
 }
 
+/**
+ * The "hide results" chevron. In the shared result surface (result-only) the
+ * local resultsPaneOpen ref is inert — the pane is always rendered there and
+ * the real collapse state lives in SqlEditorWorkspace.showResultPane — so the
+ * chevron bubbles a toggle event up instead. Per-tab surfaces (data tabs)
+ * keep the local collapse behavior.
+ */
+function handleHideResultsPane() {
+  if (props.resultOnly) {
+    emit("toggleResultsPane");
+  } else {
+    resultsPaneOpen.value = false;
+  }
+}
+
 function onResultsResized(payload: { panes: { size: number }[] }) {
   const resultsPane = payload.panes[1];
   if (resultsPane?.size != null && resultsPane.size >= 20 && resultsPane.size <= 85) {
@@ -1664,7 +1679,7 @@ defineExpose({
                   </PopoverContent>
                 </Popover>
                 <LightTooltip :text="t('editor.hideResultsPane')" side="bottom" :delay="0" :close-delay="0" nowrap>
-                  <Button variant="ghost" size="icon" class="h-6 w-7 shrink-0 text-muted-foreground hover:text-foreground" :title="t('editor.hideResultsPane')" :aria-label="t('editor.hideResultsPane')" @click="resultsPaneOpen = false">
+                  <Button variant="ghost" size="icon" class="h-6 w-7 shrink-0 text-muted-foreground hover:text-foreground" :title="t('editor.hideResultsPane')" :aria-label="t('editor.hideResultsPane')" @click="handleHideResultsPane">
                     <ChevronDown class="h-3.5 w-3.5" />
                   </Button>
                 </LightTooltip>

apps/desktop/src/components/layout/SqlEditorWorkspace.vue

@@ -1,10 +1,12 @@
 <script setup lang="ts">
-import { computed, nextTick, onMounted, ref, useAttrs } from "vue";
+import { computed, nextTick, onMounted, ref, useAttrs, watch } from "vue";
+import { useI18n } from "vue-i18n";
 import { Splitpanes, Pane } from "splitpanes";
 import "splitpanes/dist/splitpanes.css";
 import "./sqlEditorWorkspace.css";
 import { useQueryStore } from "@/stores/queryStore";
 import { safeLocalStorageGet, safeLocalStorageSet } from "@/lib/backend/safeStorage";
+import { Button } from "@/components/ui/button";
 import EditorGroup from "./EditorGroup.vue";
 import QueryResultSurface from "./QueryResultSurface.vue";
 import { createContentSurfaceEventForwarders } from "@/lib/tabs/contentSurfaceEvents";
@@ -71,13 +73,7 @@ defineExpose({
     const group = groupForElement(element) ?? activeEditorGroup();
     return group?.refreshData() ?? resultSurfaceRef.value?.refreshData() ?? false;
   },
-  toggleResultsPane: () => {
+  toggleResultsPane: () => toggleSharedResultsPane(),
-    if (!showSharedResult.value) {
-      return activeEditorGroup()?.toggleResultsPane() ?? false;
-    }
-    showResultPane.value = !showResultPane.value;
-    return true;
-  },
   refreshQueryEditorCompletionCache: () => activeEditorGroup()?.refreshQueryEditorCompletionCache() ?? false,
   handleModRTarget: (target: Element) => {
     // DataGrid, Elasticsearch JSON, and the cell-detail editor (Teleported
@@ -107,6 +103,7 @@ defineExpose({
   executeRedisCommand: (command: string) => (groupForElement(commandTargetElement(null)) ?? activeEditorGroup())?.executeRedisCommand(command) ?? Promise.resolve(false),
 });
 
+const { t } = useI18n();
 const queryStore = useQueryStore();
 const activeTab = computed(() => queryStore.tabs.find((tab) => tab.id === queryStore.activeTabId));
 const showSharedResult = computed(() => activeTab.value?.mode === "query");
@@ -124,6 +121,31 @@ const showResultPane = ref(true);
 // (globals.css kills it for horizontal splitpanes).
 const resultPaneTargetSize = computed(() => (showSharedResult.value && showResultPane.value ? resultPaneSize.value : 0));
 const editorPaneSize = computed(() => 100 - resultPaneTargetSize.value);
+
+/**
+ * Single toggle entry point for the shared result pane. Reached from the
+ * keyboard shortcut (exposed toggleResultsPane) and from the shared surface's
+ * "hide results" chevron, which bubbles a toggleResultsPane event up through
+ * ContentArea → QueryResultSurface. Non-query tabs (data etc.) render a plain
+ * ContentArea and keep their own per-tab resultsPaneOpen collapse behavior.
+ */
+function toggleSharedResultsPane(): boolean {
+  if (!showSharedResult.value) {
+    return activeEditorGroup()?.toggleResultsPane() ?? false;
+  }
+  showResultPane.value = !showResultPane.value;
+  return true;
+}
+
+// Restores the pre-split "running a query re-expands the results pane"
+// behavior (see issue #6193): a collapsed shared pane comes back when the
+// active tab starts executing.
+watch(
+  () => activeTab.value?.isExecuting,
+  (isExecuting) => {
+    if (isExecuting) showResultPane.value = true;
+  },
+);
 // Entrance choreography is hydration-gated: groups present at first render
 // never animate (no load choreography); only groups created later — by a
 // split — materialize from their owner's side of the divider.
@@ -195,7 +217,7 @@ function handleFocusStatement(tabId: string, range: StatementRange | null): bool
 </script>
 
 <template>
-  <div class="sql-editor-workspace flex h-full min-h-0 flex-1 flex-col overflow-hidden" :class="workspaceClass">
+  <div class="sql-editor-workspace relative flex h-full min-h-0 flex-1 flex-col overflow-hidden" :class="workspaceClass">
     <Splitpanes horizontal class="sql-editor-workspace-split flex-1 min-h-0" :class="{ 'result-pane-collapsed': resultPaneTargetSize === 0 }" @resized="onSharedResultResized">
       <Pane class="min-h-0 min-w-0" :size="editorPaneSize" :min-size="100 - SHARED_RESULT_PANE_MAX_SIZE">
         <Splitpanes
@@ -237,6 +259,7 @@ function handleFocusStatement(tabId: string, range: StatementRange | null): bool
               ref="resultSurfaceRef"
               v-bind="resultSurfaceBindings"
               class="h-full"
+              @toggle-results-pane="toggleSharedResultsPane"
               @preview-statement="
                 (tabId: string, range: { from: number; to: number } | null) => {
                   handlePreviewStatement(tabId, range);
@@ -252,5 +275,19 @@ function handleFocusStatement(tabId: string, range: StatementRange | null): bool
         </Transition>
       </Pane>
     </Splitpanes>
+    <!-- The shared surface unmounts when collapsed, so the mouse re-show
+         affordance lives here, outside the collapsible pane. -->
+    <Button
+      v-if="showSharedResult && !showResultPane"
+      type="button"
+      variant="secondary"
+      size="sm"
+      class="absolute bottom-3 right-3 z-20 h-7 gap-1.5 rounded-full border bg-background/95 px-3 text-xs shadow-lg hover:bg-accent"
+      :title="t('editor.showResultsPane')"
+      :aria-label="t('editor.showResultsPane')"
+      @click="showResultPane = true"
+    >
+      {{ t("editor.showResultsPane") }}
+    </Button>
   </div>
 </template>

apps/desktop/src/components/layout/__tests__/SqlEditorWorkspace.spec.ts

@@ -9,6 +9,7 @@ const editorSurfaceSource = readFileSync(new URL("../QueryEditorSurface.vue", im
 const resultSurfaceSource = readFileSync(new URL("../QueryResultSurface.vue", import.meta.url), "utf8");
 const contentAreaSource = readFileSync(new URL("../ContentArea.vue", import.meta.url), "utf8");
 const surfaceContractSource = readFileSync(new URL("../querySurfaces.ts", import.meta.url), "utf8");
+const surfaceEventsSource = readFileSync(new URL("../../../lib/tabs/contentSurfaceEvents.ts", import.meta.url), "utf8");
 
 describe("SQL editor workspace single-group tracer bullet", () => {
   it("composes splitpanes editor groups and one shared result surface", () => {
@@ -81,6 +82,26 @@ describe("SQL editor workspace single-group tracer bullet", () => {
     expect(resultSurfaceSource).toContain('v-bind="bindings"');
   });
 
+  it("lets the mouse hide and re-show the shared query results pane", () => {
+    // Regression (#8076 refactor): the shared result surface's "hide results"
+    // chevron wrote the inert per-instance resultsPaneOpen ref, so query-tab
+    // results could no longer be collapsed by mouse — the pane was pinned
+    // open. The chevron must bubble a toggleResultsPane event up through the
+    // surface contract to the workspace, which owns the real collapse state.
+    expect(surfaceContractSource).toContain("toggleResultsPane: []");
+    expect(surfaceEventsSource).toContain('"toggleResultsPane",');
+    expect(contentAreaSource).toContain('emit("toggleResultsPane")');
+    expect(contentAreaSource).toContain('@click="handleHideResultsPane"');
+    expect(workspaceSource).toContain('@toggle-results-pane="toggleSharedResultsPane"');
+    expect(workspaceSource).toContain("showResultPane.value = !showResultPane.value");
+    // Collapsing unmounts the shared surface, so the mouse re-show affordance
+    // must live at the workspace level, not inside the collapsible pane.
+    expect(workspaceSource).toContain("editor.showResultsPane");
+    expect(workspaceSource).toContain("showSharedResult && !showResultPane");
+    // Running a query re-expands a collapsed pane (issue #6193 promise).
+    expect(workspaceSource).toContain("if (isExecuting) showResultPane.value = true;");
+  });
+
   it("animates layout transitions for split groups and the shared result surface", () => {
     const workspaceCssSource = readFileSync(new URL("../sqlEditorWorkspace.css", import.meta.url), "utf8");
     expect(workspaceSource).toContain('import "./sqlEditorWorkspace.css"');

apps/desktop/src/components/layout/querySurfaces.ts

@@ -95,4 +95,5 @@ export interface ContentAreaSurfaceEmits {
   openSettings: [initialTab?: string, initialSection?: string];
   openConnectionSettings: [connectionId: string, initialTab: "advanced"];
   toggleZenMode: [];
+  toggleResultsPane: [];
 }

apps/desktop/src/lib/tabs/contentSurfaceEvents.ts

@@ -41,6 +41,7 @@ export const contentSurfaceEventNames = [
   "openSettings",
   "openConnectionSettings",
   "toggleZenMode",
+  "toggleResultsPane",
 ] as const satisfies Array<keyof ContentAreaSurfaceEmits>;
 
 export type ContentSurfaceEventName = (typeof contentSurfaceEventNames)[number];