Add poll chat command with reaction voting

poc/src/communication.ts

@@ -187,6 +187,26 @@ export function parseTier(value: string): TrustTier | undefined {
     return value === "user" || value === "trusted" || value === "admin" ? value : undefined;
 }
 
+/* Polls */
+
+export const POLL_EMOJIS = ["1️⃣", "2️⃣", "3️⃣", "4️⃣"];
+
+export interface ParsedPoll {
+    question: string;
+    options: string[];
+}
+
+/** Parse `question | option 1 | option 2 [| option 3 [| option 4]]`. */
+export function parsePoll(text: string): ParsedPoll | undefined {
+    const parts = text.split("|").map(part => part.trim()).filter(Boolean);
+    if (parts.length < 3 || parts.length > 5) return undefined;
+
+    const [question, ...options] = parts;
+    if (!question || options.length < 2 || options.some(option => option.length > 80)) return undefined;
+
+    return { question: question.slice(0, 200), options: options.map(option => option.slice(0, 80)) };
+}
+
 /* Secret redaction for persistent logs. Keep it minimal. */
 
 const SECRET_PATTERNS = [