fix(app): stabilize native terminal rendering

Scale custom glyph paths in measured cell coordinates so box-drawing runs fill their cells on Android. Debounce daemon resize claims at the terminal pane boundary so keyboard layout animation sends only the settled dimensions.

packages/app/src/components/terminal-resize-debouncer.ts

@@ -0,0 +1,47 @@
+export interface TerminalResizeRequest {
+  rows: number;
+  cols: number;
+  shouldClaim: boolean;
+  forceClaim?: boolean;
+}
+
+export function createTerminalResizeDebouncer(input: {
+  delayMs: number;
+  emit: (resize: TerminalResizeRequest) => void;
+}): {
+  schedule: (resize: TerminalResizeRequest) => void;
+  cancel: () => void;
+} {
+  let timeout: ReturnType<typeof setTimeout> | null = null;
+  let pending: TerminalResizeRequest | null = null;
+
+  const cancel = () => {
+    if (timeout !== null) {
+      clearTimeout(timeout);
+      timeout = null;
+    }
+    pending = null;
+  };
+
+  return {
+    schedule: (resize) => {
+      pending = {
+        ...resize,
+        shouldClaim: (pending?.shouldClaim ?? false) || resize.shouldClaim,
+        forceClaim: (pending?.forceClaim ?? false) || resize.forceClaim || undefined,
+      };
+      if (timeout !== null) {
+        clearTimeout(timeout);
+      }
+      timeout = setTimeout(() => {
+        timeout = null;
+        const resizeToEmit = pending;
+        pending = null;
+        if (resizeToEmit) {
+          input.emit(resizeToEmit);
+        }
+      }, input.delayMs);
+    },
+    cancel,
+  };
+}