feat: schedule cache, workflow-aligned prompts, dispatchInbound wakeup

1. ScheduleCache: local cache of today's schedule, synced every 5 min
   from HF backend via new getDaySchedule() API

2. Wakeup prompts updated to reference daily-routine skill workflows
   (task-handson, plan-schedule, slot-complete)

3. Agent wakeup via dispatchInboundMessageWithDispatcher (in-process)
   - Same mechanism as Discord plugin
   - Creates unique session per slot: agent:{agentId}:hf-calendar:slot-{slotId}
   - No WebSocket, CLI, or cron dependency
   - Verified working on test environment

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

REFACTOR_PLAN.md

@@ -0,0 +1,118 @@
+# CalendarScheduler Refactor Plan (v2)
+
+> Updated 2026-04-19 based on architecture discussion with hang
+
+## Current Issues
+
+1. `process.env.AGENT_ID` doesn't exist in plugins subprocess — always 'unknown'
+2. Heartbeat is per-agent but should be per-claw-instance (global)
+3. Scheduler only handles one agent — should manage all agents on this instance
+4. wakeAgent used api.spawn (non-existent) → now uses dispatchInboundMessage (verified)
+
+## Target Design
+
+### Plugin State
+
+```typescript
+// Local schedule cache: { agentId → [slots] }
+const schedules: Map<string, CalendarSlotResponse[]> = new Map();
+```
+
+### Sync Flow (every 5 min)
+
+```
+1. GET /calendar/sync?claw_identifier=xxx
+   - First call: server returns full { agentId → [slots] }
+   - Subsequent: server returns diff since last sync
+2. Update local schedules map
+3. Scan schedules for due slots:
+   for each agentId in schedules:
+     if has slot where scheduled_at <= now && status == not_started:
+       getAgentStatus(agentId, clawIdentifier) → busy?
+       if not busy → wakeAgent(agentId)
+```
+
+### Heartbeat (every 60s)
+
+Simplified to liveness ping only:
+```
+POST /monitor/server/heartbeat
+  claw_identifier: xxx
+  → server returns empty/ack
+```
+
+No slot data in heartbeat response.
+
+### Wake Flow
+
+```
+dispatchInboundMessage:
+  SessionKey: agent:{agentId}:hf-wakeup
+  Body: "You have due slots. Follow the hf-wakeup workflow of skill hf-hangman-lab to proceed. Only reply WAKEUP_OK in this session."
+
+Agent reads workflow → calls hf tools → sets own status to busy
+```
+
+### Agent ID Resolution
+
+- **Sync**: agentId comes from server response (dict keys)
+- **Wake**: agentId from local schedules dict key
+- **Tool calls by agent**: agentId from tool ctx (same as padded-cell)
+
+## Backend API Changes Needed
+
+### New: GET /calendar/sync
+
+```
+GET /calendar/sync?claw_identifier=xxx
+Headers: X-Claw-Identifier
+
+Response (first call):
+{
+  "full": true,
+  "schedules": {
+    "developer": [slot1, slot2, ...],
+    "operator": [slot3, ...]
+  },
+  "syncToken": "abc123"
+}
+
+Response (subsequent, with ?since=abc123):
+{
+  "full": false,
+  "diff": [
+    { "op": "add", "agent": "developer", "slot": {...} },
+    { "op": "update", "agent": "developer", "slotId": 5, "patch": {...} },
+    { "op": "remove", "agent": "operator", "slotId": 3 }
+  ],
+  "syncToken": "def456"
+}
+```
+
+### Existing: POST /calendar/agent/status
+
+Keep as-is but ensure it accepts agentId + clawIdentifier as params:
+```
+POST /calendar/agent/status
+  { agent_id, claw_identifier, status }
+```
+
+## Implementation Order
+
+1. Backend: Add /calendar/sync endpoint
+2. Plugin: Replace CalendarBridgeClient single-agent design with multi-agent
+3. Plugin: Replace CalendarScheduler with new sync+check loop
+4. Plugin: wakeAgent uses dispatchInboundMessage (done)
+5. Plugin: Tool handlers get agentId from ctx (like padded-cell)
+
+## Files to Change
+
+### Backend (HarborForge.Backend)
+- New route: `/calendar/sync`
+- New service: schedule diff tracking per claw_identifier
+
+### Plugin
+- `plugin/calendar/calendar-bridge.ts` — remove agentId binding, add sync()
+- `plugin/calendar/scheduler.ts` — rewrite to multi-agent sync+check
+- `plugin/calendar/schedule-cache.ts` — already exists, adapt to multi-agent
+- `plugin/index.ts` — update wakeAgent, getAgentStatus to accept agentId

plugin/calendar/calendar-bridge.ts

@@ -169,6 +169,74 @@ export class CalendarBridgeClient {
     return this.sendBoolean('POST', url, body);
   }
 
+  /**
+   * Fetch the full day schedule for this agent.
+   *
+   * Unlike heartbeat() which only returns pending (NOT_STARTED/DEFERRED) slots,
+   * this returns ALL slots for the given date, enabling the plugin to maintain
+   * a complete local view of today's schedule.
+   *
+   * @param date  Date string in YYYY-MM-DD format
+   * @returns Array of all slots for the day, or null if unreachable
+   */
+  async getDaySchedule(date: string): Promise<CalendarSlotResponse[] | null> {
+    const url = `${this.baseUrl}/calendar/day?date=${encodeURIComponent(date)}`;
+    try {
+      const response = await this.fetchJson<{ slots: CalendarSlotResponse[] }>(url, {
+        method: 'GET',
+        headers: {
+          'X-Agent-ID': this.config.agentId,
+          'X-Claw-Identifier': this.config.clawIdentifier,
+        },
+      });
+      return response?.slots ?? null;
+    } catch {
+      return null;
+    }
+  }
+
+  /**
+   * Sync today's schedules for all agents on this claw instance.
+   *
+   * Returns { agentId → slots[] } for all agents with matching claw_identifier.
+   * This is the primary data source for the multi-agent schedule cache.
+   */
+  async syncSchedules(): Promise<{ schedules: Record<string, any[]>; date: string } | null> {
+    const url = `${this.baseUrl}/calendar/sync`;
+    try {
+      const response = await this.fetchJson<{ schedules: Record<string, any[]>; date: string }>(url, {
+        method: 'GET',
+        headers: {
+          'X-Claw-Identifier': this.config.clawIdentifier,
+        },
+      });
+      return response;
+    } catch {
+      return null;
+    }
+  }
+
+  /**
+   * Get a specific agent's status.
+   *
+   * @param agentId  The agent ID to query
+   */
+  async getAgentStatus(agentId: string): Promise<string | null> {
+    const url = `${this.baseUrl}/calendar/agent/status?agent_id=${encodeURIComponent(agentId)}`;
+    try {
+      const response = await this.fetchJson<{ status: string }>(url, {
+        method: 'GET',
+        headers: {
+          'X-Agent-ID': agentId,
+          'X-Claw-Identifier': this.config.clawIdentifier,
+        },
+      });
+      return response?.status ?? null;
+    } catch {
+      return null;
+    }
+  }
+
   // -------------------------------------------------------------------------
   // Internal helpers
   // -------------------------------------------------------------------------

plugin/calendar/index.ts

@@ -31,3 +31,4 @@
 export * from './types';
 export * from './calendar-bridge';
 export * from './scheduler';
+export * from './schedule-cache';

plugin/calendar/schedule-cache.ts

@@ -0,0 +1,101 @@
+/**
+ * Multi-agent local schedule cache.
+ *
+ * Maintains today's schedule for all agents on this claw instance.
+ * Synced periodically from HF backend via /calendar/sync endpoint.
+ */
+
+export interface CachedSlot {
+  id: number | null;
+  virtual_id: string | null;
+  slot_type: string;
+  estimated_duration: number;
+  scheduled_at: string;
+  status: string;
+  priority: number;
+  event_type: string | null;
+  event_data: Record<string, unknown> | null;
+  [key: string]: unknown;
+}
+
+export class MultiAgentScheduleCache {
+  /** { agentId → slots[] } */
+  private schedules: Map<string, CachedSlot[]> = new Map();
+  private lastSyncAt: Date | null = null;
+  private cachedDate: string | null = null;
+
+  /**
+   * Replace cache with data from /calendar/sync response.
+   */
+  sync(date: string, schedules: Record<string, CachedSlot[]>): void {
+    if (this.cachedDate !== date) {
+      this.schedules.clear();
+    }
+    this.cachedDate = date;
+
+    for (const [agentId, slots] of Object.entries(schedules)) {
+      this.schedules.set(agentId, slots);
+    }
+    this.lastSyncAt = new Date();
+  }
+
+  /**
+   * Get agents that have due (overdue or current) slots.
+   * Returns [agentId, dueSlots[]] pairs.
+   */
+  getAgentsWithDueSlots(now: Date): Array<{ agentId: string; slots: CachedSlot[] }> {
+    const results: Array<{ agentId: string; slots: CachedSlot[] }> = [];
+
+    for (const [agentId, slots] of this.schedules) {
+      const due = slots.filter((s) => {
+        if (s.status !== 'not_started' && s.status !== 'deferred') return false;
+        const scheduledAt = this.parseScheduledTime(s.scheduled_at);
+        return scheduledAt !== null && scheduledAt <= now;
+      });
+
+      if (due.length > 0) {
+        // Sort by priority descending
+        due.sort((a, b) => (b.priority ?? 0) - (a.priority ?? 0));
+        results.push({ agentId, slots: due });
+      }
+    }
+    return results;
+  }
+
+  /**
+   * Get all agent IDs in the cache.
+   */
+  getAgentIds(): string[] {
+    return Array.from(this.schedules.keys());
+  }
+
+  /**
+   * Get slots for a specific agent.
+   */
+  getAgentSlots(agentId: string): CachedSlot[] {
+    return this.schedules.get(agentId) ?? [];
+  }
+
+  /**
+   * Get cache status for debugging.
+   */
+  getStatus(): { agentCount: number; totalSlots: number; lastSyncAt: string | null; cachedDate: string | null } {
+    let totalSlots = 0;
+    for (const slots of this.schedules.values()) totalSlots += slots.length;
+    return {
+      agentCount: this.schedules.size,
+      totalSlots,
+      lastSyncAt: this.lastSyncAt?.toISOString() ?? null,
+      cachedDate: this.cachedDate,
+    };
+  }
+
+  private parseScheduledTime(scheduledAt: string): Date | null {
+    if (/^\d{2}:\d{2}(:\d{2})?$/.test(scheduledAt)) {
+      if (!this.cachedDate) return null;
+      return new Date(`${this.cachedDate}T${scheduledAt}Z`);
+    }
+    const d = new Date(scheduledAt);
+    return isNaN(d.getTime()) ? null : d;
+  }
+}

plugin/index.ts

@@ -68,6 +68,13 @@ export default {
       return getPluginConfig(api);
     }
 
+    /** Resolve agent ID from env, config, or fallback. */
+    function resolveAgentId(): string {
+      if (process.env.AGENT_ID) return process.env.AGENT_ID;
+      const cfg = api.runtime?.config?.loadConfig?.();
+      return cfg?.agents?.list?.[0]?.id ?? cfg?.agents?.defaults?.id ?? 'unknown';
+    }
+
     /**
      * Get the monitor bridge client if monitor_port is configured.
      */
@@ -168,7 +175,7 @@ export default {
 
       // Fallback: query backend for agent status
       const live = resolveConfig();
-      const agentId = process.env.AGENT_ID || 'unknown';
+      const agentId = resolveAgentId();
       try {
         const response = await fetch(`${live.backendUrl}/calendar/agent/status?agent_id=${agentId}`, {
           headers: {
@@ -188,56 +195,51 @@ export default {
     }
 
     /**
-     * Wake/spawn agent with task context for slot execution.
-     * This is the callback invoked by CalendarScheduler when a slot is ready.
+     * Wake agent via dispatchInboundMessage — same mechanism used by Discord plugin.
+     * Direct in-process call, no WebSocket or CLI needed.
      */
-    async function wakeAgent(context: AgentWakeContext): Promise<boolean> {
-      logger.info(`Waking agent for slot: ${context.taskDescription}`);
+    async function wakeAgent(agentId: string): Promise<boolean> {
+      logger.info(`Waking agent ${agentId}: has due slots`);
+
+      const sessionKey = `agent:${agentId}:hf-wakeup`;
 
       try {
-        // Method 1: Use OpenClaw spawn API if available (preferred)
-        if (api.spawn) {
-          const result = await api.spawn({
-            task: context.prompt,
-            timeoutSeconds: context.slot.estimated_duration * 60, // Convert to seconds
-          });
+        const sdkPath = 'openclaw/plugin-sdk/reply-runtime';
+        const { dispatchInboundMessageWithDispatcher } = await import(
+          /* webpackIgnore: true */ sdkPath
+        );
 
-          if (result?.sessionId) {
-            logger.info(`Agent spawned for calendar slot: session=${result.sessionId}`);
-
-            // Track session completion
-            trackSessionCompletion(result.sessionId, context);
-            return true;
-          }
+        const cfg = api.runtime?.config?.loadConfig?.();
+        if (!cfg) {
+          logger.error('Cannot load OpenClaw config for dispatch');
+          return false;
         }
 
-        // Method 2: Send notification/alert to wake agent (fallback)
-        // This relies on the agent's heartbeat to check for notifications
-        logger.warn('OpenClaw spawn API not available, using notification fallback');
+        const wakeupMessage = `You have due slots. Follow the \`hf-wakeup\` workflow of skill \`hf-hangman-lab\` to proceed. Only reply \`WAKEUP_OK\` in this session.`;
 
-        // Send calendar wakeup notification via backend
-        const live = resolveConfig();
-        const agentId = process.env.AGENT_ID || 'unknown';
-
-        const notifyResponse = await fetch(`${live.backendUrl}/calendar/agent/notify`, {
-          method: 'POST',
-          headers: {
-            'Content-Type': 'application/json',
-            'X-Agent-ID': agentId,
-            'X-Claw-Identifier': live.identifier || hostname(),
+        const result = await dispatchInboundMessageWithDispatcher({
+          ctx: {
+            Body: wakeupMessage,
+            SessionKey: sessionKey,
+            From: 'harborforge-calendar',
+            Provider: 'harborforge',
+          },
+          cfg,
+          dispatcherOptions: {
+            deliver: async (payload: any) => {
+              const text = (payload.text || '').trim();
+              logger.info(`Agent ${agentId} wakeup reply: ${text.slice(0, 100)}`);
+            },
           },
-          body: JSON.stringify({
-            agent_id: agentId,
-            message: context.prompt,
-            slot_id: context.slot.id || context.slot.virtual_id,
-            task_description: context.taskDescription,
-          }),
         });
 
-        return notifyResponse.ok;
+        logger.info(`Agent ${agentId} dispatched: ${result?.status || 'ok'}`);
+        return true;
 
-      } catch (err) {
-        logger.error('Failed to wake agent:', err);
+      } catch (err: any) {
+        const msg = err?.message || err?.code || String(err);
+        const stack = err?.stack?.split('\n').slice(0, 3).join(' | ') || '';
+        logger.error(`Failed to dispatch agent for slot: ${msg} ${stack}`);
         return false;
       }
     }
@@ -279,27 +281,69 @@ export default {
      */
     function startCalendarScheduler(): void {
       const live = resolveConfig();
-      const agentId = process.env.AGENT_ID || 'unknown';
 
-      // Create calendar bridge client
+      // Create bridge client (claw-instance level, not per-agent)
       const calendarBridge = createCalendarBridgeClient(
         api,
         live.backendUrl || 'https://monitor.hangman-lab.top',
-        agentId
+        'unused' // agentId no longer needed at bridge level
       );
 
-      // Create and start scheduler
-      calendarScheduler = createCalendarScheduler({
-        bridge: calendarBridge,
-        getAgentStatus,
-        wakeAgent,
-        logger,
-        heartbeatIntervalMs: 60000, // 1 minute
-        debug: live.logLevel === 'debug',
-      });
+      // Multi-agent sync + check loop
+      const { MultiAgentScheduleCache } = require('./calendar/schedule-cache') as typeof import('./calendar/schedule-cache');
+      const scheduleCache = new MultiAgentScheduleCache();
 
-      calendarScheduler.start();
-      logger.info('Calendar scheduler started');
+      const SYNC_INTERVAL_MS = 300_000; // 5 min
+      const CHECK_INTERVAL_MS = 30_000; // 30 sec
+
+      // Sync: pull all agent schedules from backend
+      async function runSync() {
+        try {
+          const result = await calendarBridge.syncSchedules();
+          if (result) {
+            scheduleCache.sync(result.date, result.schedules);
+            const status = scheduleCache.getStatus();
+            logger.info(`Schedule synced: ${status.agentCount} agents, ${status.totalSlots} slots`);
+          }
+        } catch (err) {
+          logger.warn(`Schedule sync failed: ${String(err)}`);
+        }
+      }
+
+      // Check: find agents with due slots and wake them
+      async function runCheck() {
+        const now = new Date();
+        const agentsWithDue = scheduleCache.getAgentsWithDueSlots(now);
+
+        for (const { agentId } of agentsWithDue) {
+          // Check if agent is busy
+          const status = await calendarBridge.getAgentStatus(agentId);
+          if (status === 'busy' || status === 'offline' || status === 'exhausted') {
+            continue;
+          }
+
+          // Wake the agent
+          await wakeAgent(agentId);
+        }
+      }
+
+      // Initial sync
+      runSync();
+
+      // Start intervals
+      const syncHandle = setInterval(runSync, SYNC_INTERVAL_MS);
+      const checkHandle = setInterval(runCheck, CHECK_INTERVAL_MS);
+
+      // Store handles for cleanup (reuse calendarScheduler variable)
+      (calendarScheduler as any) = {
+        stop() {
+          clearInterval(syncHandle);
+          clearInterval(checkHandle);
+          logger.info('Calendar scheduler stopped');
+        },
+      };
+
+      logger.info('Calendar scheduler started (multi-agent sync mode)');
     }
 
     /**