refactor(auto-reply): split reply flow

src/auto-reply/reply/mentions.ts

@@ -0,0 +1,45 @@
+import type { ClawdisConfig } from "../../config/config.js";
+import type { MsgContext } from "../templating.js";
+
+export function stripStructuralPrefixes(text: string): string {
+  // Ignore wrapper labels, timestamps, and sender prefixes so directive-only
+  // detection still works in group batches that include history/context.
+  const marker = "[Current message - respond to this]";
+  const afterMarker = text.includes(marker)
+    ? text.slice(text.indexOf(marker) + marker.length)
+    : text;
+  return afterMarker
+    .replace(/\[[^\]]+\]\s*/g, "")
+    .replace(/^[ \t]*[A-Za-z0-9+()\-_. ]+:\s*/gm, "")
+    .replace(/\s+/g, " ")
+    .trim();
+}
+
+export function stripMentions(
+  text: string,
+  ctx: MsgContext,
+  cfg: ClawdisConfig | undefined,
+): string {
+  let result = text;
+  const patterns = cfg?.routing?.groupChat?.mentionPatterns ?? [];
+  for (const p of patterns) {
+    try {
+      const re = new RegExp(p, "gi");
+      result = result.replace(re, " ");
+    } catch {
+      // ignore invalid regex
+    }
+  }
+  const selfE164 = (ctx.To ?? "").replace(/^whatsapp:/, "");
+  if (selfE164) {
+    const esc = selfE164.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+    result = result
+      .replace(new RegExp(esc, "gi"), " ")
+      .replace(new RegExp(`@${esc}`, "gi"), " ");
+  }
+  // Generic mention patterns like @123456789 or plain digits
+  result = result.replace(/@[0-9+]{5,}/g, " ");
+  // Discord-style mentions (<@123> or <@!123>)
+  result = result.replace(/<@!?\d+>/g, " ");
+  return result.replace(/\s+/g, " ").trim();
+}