refactor: dedupe chat envelope + daemon output + skills UI

src/shared/chat-envelope.ts

@@ -0,0 +1,49 @@
+const ENVELOPE_PREFIX = /^\[([^\]]+)\]\s*/;
+const ENVELOPE_CHANNELS = [
+  "WebChat",
+  "WhatsApp",
+  "Telegram",
+  "Signal",
+  "Slack",
+  "Discord",
+  "Google Chat",
+  "iMessage",
+  "Teams",
+  "Matrix",
+  "Zalo",
+  "Zalo Personal",
+  "BlueBubbles",
+];
+
+const MESSAGE_ID_LINE = /^\s*\[message_id:\s*[^\]]+\]\s*$/i;
+
+function looksLikeEnvelopeHeader(header: string): boolean {
+  if (/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}Z\b/.test(header)) {
+    return true;
+  }
+  if (/\d{4}-\d{2}-\d{2} \d{2}:\d{2}\b/.test(header)) {
+    return true;
+  }
+  return ENVELOPE_CHANNELS.some((label) => header.startsWith(`${label} `));
+}
+
+export function stripEnvelope(text: string): string {
+  const match = text.match(ENVELOPE_PREFIX);
+  if (!match) {
+    return text;
+  }
+  const header = match[1] ?? "";
+  if (!looksLikeEnvelopeHeader(header)) {
+    return text;
+  }
+  return text.slice(match[0].length);
+}
+
+export function stripMessageIdHints(text: string): string {
+  if (!text.includes("[message_id:")) {
+    return text;
+  }
+  const lines = text.split(/\r?\n/);
+  const filtered = lines.filter((line) => !MESSAGE_ID_LINE.test(line));
+  return filtered.length === lines.length ? text : filtered.join("\n");
+}