Consolidate schedule config, support multi-post per day

- Schedule config moved to nested schedule object in prompts.json
- Scheduler picks 1-3 random times for personality with 4hr min gap
- shouldRun reads from schedule object

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

bot.js

@@ -28,18 +28,16 @@ function saveHistory(name, history) {
 }
 
 function shouldRun(promptConfig) {
-  const history = loadHistory(promptConfig.name);
-  const now = new Date();
+  const schedule = promptConfig.schedule;
+  if (!schedule || schedule.type === "daily") return true;
 
-  if (promptConfig.frequency === "daily") {
-    return true;
-  }
-
-  if (promptConfig.frequency === "random" && promptConfig.minDays) {
+  if (schedule.type === "random" && schedule.minDays) {
+    const history = loadHistory(promptConfig.name);
     if (history.length > 0) {
+      const now = new Date();
       const lastPost = new Date(history[history.length - 1].date);
       const daysSinceLast = (now - lastPost) / (1000 * 60 * 60 * 24);
-      if (daysSinceLast < promptConfig.minDays) return false;
+      if (daysSinceLast < schedule.minDays) return false;
     }
     // Random chance so it doesn't always fire on the minimum day
     return Math.random() < 0.5;