TUI: waiting shimmer helper + tests

src/tui/tui-waiting.ts

@@ -0,0 +1,47 @@
+import type { ClawdbotTheme } from "./theme/theme.js";
+
+export const defaultWaitingPhrases = [
+  "flibbertigibbeting",
+  "kerfuffling",
+  "dillydallying",
+  "twiddling thumbs",
+  "noodling",
+  "bamboozling",
+  "moseying",
+  "hobnobbing",
+  "pondering",
+  "conjuring",
+];
+
+export function pickWaitingPhrase(tick: number, phrases = defaultWaitingPhrases) {
+  const idx = Math.floor(tick / 10) % phrases.length;
+  return phrases[idx] ?? phrases[0] ?? "waiting";
+}
+
+export function shimmerText(theme: ClawdbotTheme, text: string, tick: number) {
+  const width = 6;
+  const hi = (ch: string) => theme.bold(theme.accentSoft(ch));
+
+  const pos = tick % (text.length + width);
+  const start = Math.max(0, pos - width);
+  const end = Math.min(text.length - 1, pos);
+
+  let out = "";
+  for (let i = 0; i < text.length; i++) {
+    const ch = text[i];
+    out += i >= start && i <= end ? hi(ch) : theme.dim(ch);
+  }
+  return out;
+}
+
+export function buildWaitingStatusMessage(params: {
+  theme: ClawdbotTheme;
+  tick: number;
+  elapsed: string;
+  connectionStatus: string;
+  phrases?: string[];
+}) {
+  const phrase = pickWaitingPhrase(params.tick, params.phrases);
+  const cute = shimmerText(params.theme, `${phrase}…`, params.tick);
+  return `${cute} • ${params.elapsed} | ${params.connectionStatus}`;
+}