PLG-CAL-003 fix deferred slot replanning

plugin/calendar/scheduler.ts

@@ -167,6 +167,15 @@ export class CalendarScheduler {
         return;
       }
 
+      // Agent is idle again - previously deferred slots should become eligible
+      // for selection in the next planning pass.
+      if (this.state.deferredSlotIds.size > 0) {
+        this.logDebug(
+          `Agent returned to idle; clearing ${this.state.deferredSlotIds.size} deferred slot marker(s) for replanning`
+        );
+        this.state.deferredSlotIds.clear();
+      }
+
       // Agent is idle - handle pending slots
       await this.handleIdleAgent(response.slots);
 
@@ -298,6 +307,10 @@ export class CalendarScheduler {
         // Revert slot to not_started status
         await this.revertSlot(slot);
         await this.config.bridge.reportAgentStatus({ status: 'idle' });
+        this.state.isProcessing = false;
+        this.state.currentSlot = null;
+        await this.triggerReplan('wake failure');
+        return;
       }
 
       // Note: isProcessing remains true until agent signals completion
@@ -511,6 +524,7 @@ Please use this time for the scheduled activity.`;
     } finally {
       this.state.isProcessing = false;
       this.state.currentSlot = null;
+      await this.triggerReplan('slot completion');
     }
   }
 
@@ -548,6 +562,7 @@ Please use this time for the scheduled activity.`;
     } finally {
       this.state.isProcessing = false;
       this.state.currentSlot = null;
+      await this.triggerReplan('slot abort');
     }
   }
 
@@ -608,6 +623,25 @@ Please use this time for the scheduled activity.`;
     }
   }
 
+  /**
+   * Trigger an immediate replanning pass after the current slot lifecycle ends.
+   * This lets previously deferred/not-started slots compete again as soon as
+   * the agent becomes idle.
+   */
+  private async triggerReplan(reason: string): Promise<void> {
+    if (!this.state.isRunning) {
+      return;
+    }
+
+    this.logDebug(`Triggering immediate replanning after ${reason}`);
+
+    try {
+      await this.runHeartbeat();
+    } catch (err) {
+      this.config.logger.error(`Failed to trigger replanning after ${reason}:`, err);
+    }
+  }
+
   /**
    * Get a stable ID for a slot (real or virtual).
    */