feat(tui): use configured compaction threshold for /context output

src/frontends/tui/components/App.tsx

@@ -50,6 +50,7 @@ export interface AppProps {
   agent?: NativeAgent;
   hookEngine?: HookEngine;
   modelProviderConfigs?: Partial<Record<ModelProvider, ModelConfig>>;
+  contextThresholdPct?: number;
   onExit?: () => void;
 }
 
@@ -62,6 +63,7 @@ export function App({
   agent,
   hookEngine,
   modelProviderConfigs,
+  contextThresholdPct,
   onExit,
 }: AppProps): React.ReactElement {
   const { exit } = useApp();
@@ -247,7 +249,7 @@ export function App({
         const modelName = modelRouter?.getLabel(tier) ?? model;
         const window = getContextWindow(modelName);
         const usagePct = window > 0 ? (estimated / window) * 100 : 0;
-        const thresholdPct = 80;
+        const thresholdPct = contextThresholdPct ?? 80;
         const thresholdTokens = Math.floor((thresholdPct / 100) * window);
         const remaining = Math.max(0, window - estimated);
         const text = [