fix: persist condensing API configuration in Context Management settings

- Added condensingApiConfigId dropdown to ContextManagementSettings component
- Dropdown is now visible regardless of auto-condense checkbox state
- Updated SettingsView to pass condensingApiConfigId prop
- Fixed test expectations to account for new dropdown element

Fixes #8871

webview-ui/src/components/settings/ContextManagementSettings.tsx

@@ -24,6 +24,7 @@ type ContextManagementSettingsProps = HTMLAttributes<HTMLDivElement> & {
 	maxTotalImageSize?: number
 	maxConcurrentFileReads?: number
 	profileThresholds?: Record<string, number>
+	condensingApiConfigId?: string
 	includeDiagnosticMessages?: boolean
 	maxDiagnosticMessages?: number
 	writeDelayMs: number
@@ -40,6 +41,7 @@ type ContextManagementSettingsProps = HTMLAttributes<HTMLDivElement> & {
 		| "maxTotalImageSize"
 		| "maxConcurrentFileReads"
 		| "profileThresholds"
+		| "condensingApiConfigId"
 		| "includeDiagnosticMessages"
 		| "maxDiagnosticMessages"
 		| "writeDelayMs"
@@ -61,6 +63,7 @@ export const ContextManagementSettings = ({
 	maxTotalImageSize,
 	maxConcurrentFileReads,
 	profileThresholds = {},
+	condensingApiConfigId,
 	includeDiagnosticMessages,
 	maxDiagnosticMessages,
 	writeDelayMs,
@@ -398,6 +401,40 @@ export const ContextManagementSettings = ({
 					data-testid="auto-condense-context-checkbox">
 					<span className="font-medium">{t("settings:contextManagement.autoCondenseContext.name")}</span>
 				</VSCodeCheckbox>
+
+				{/* API Configuration dropdown - shown regardless of auto-condense state */}
+				<div className="mt-4">
+					<label className="block font-medium mb-1">
+						{t("prompts:supportPrompts.condense.apiConfiguration")}
+					</label>
+					<Select
+						value={condensingApiConfigId || "-"}
+						onValueChange={(value) => {
+							const newConfigId = value === "-" ? "" : value
+							setCachedStateField("condensingApiConfigId", newConfigId)
+							vscode.postMessage({
+								type: "condensingApiConfigId",
+								text: newConfigId,
+							})
+						}}
+						data-testid="condensing-api-config-select">
+						<SelectTrigger className="w-full">
+							<SelectValue placeholder={t("prompts:supportPrompts.condense.useCurrentConfig")} />
+						</SelectTrigger>
+						<SelectContent>
+							<SelectItem value="-">{t("prompts:supportPrompts.condense.useCurrentConfig")}</SelectItem>
+							{(listApiConfigMeta || []).map((config) => (
+								<SelectItem key={config.id} value={config.id}>
+									{config.name}
+								</SelectItem>
+							))}
+						</SelectContent>
+					</Select>
+					<div className="text-sm text-vscode-descriptionForeground mt-1">
+						{t("prompts:supportPrompts.condense.apiConfigDescription")}
+					</div>
+				</div>
+
 				{autoCondenseContext && (
 					<div className="flex flex-col gap-3 pl-3 border-l-2 border-vscode-button-background">
 						<div className="flex items-center gap-4 font-bold">

webview-ui/src/components/settings/SettingsView.tsx

@@ -748,6 +748,7 @@ const SettingsView = forwardRef<SettingsViewRef, SettingsViewProps>(({ onDone, t
 							maxTotalImageSize={maxTotalImageSize}
 							maxConcurrentFileReads={maxConcurrentFileReads}
 							profileThresholds={profileThresholds}
+							condensingApiConfigId={condensingApiConfigId}
 							includeDiagnosticMessages={includeDiagnosticMessages}
 							maxDiagnosticMessages={maxDiagnosticMessages}
 							writeDelayMs={writeDelayMs}

webview-ui/src/components/settings/__tests__/ContextManagementSettings.spec.tsx

@@ -377,9 +377,9 @@ describe("ContextManagementSettings", () => {
 		const slider = screen.getByTestId("condense-threshold-slider")
 		expect(slider).toBeInTheDocument()
 
-		// Should render the profile select dropdown
+		// Should render the profile select dropdown and condensing API config dropdown
 		const selects = screen.getAllByRole("combobox")
-		expect(selects).toHaveLength(1)
+		expect(selects).toHaveLength(2)
 	})
 
 	describe("Auto Condense Context functionality", () => {
@@ -412,8 +412,8 @@ describe("ContextManagementSettings", () => {
 
 			// Threshold settings should be visible
 			expect(screen.getByTestId("condense-threshold-slider")).toBeInTheDocument()
-			// One combobox for profile selection
-			expect(screen.getAllByRole("combobox")).toHaveLength(1)
+			// Two comboboxes: one for profile selection and one for condensing API config
+			expect(screen.getAllByRole("combobox")).toHaveLength(2)
 		})
 
 		it("updates auto condense context percent", () => {