Develop smart batch messaging system

[luandro]

This issue involves the creation of a Smart Messaging System to enhance natural, conversational interactions by optimizing message timing and combining related responses. The Smart Messaging System should allow each plugin to assign a "send time" for responses, while also processing additional, incoming messages from the same conversation session to adapt responses in real-time.

This feature is essential to creating a fluid, interactive user experience where the bot adapts to real-time conversations naturally. By timing and combining responses, the Smart Messaging System will enhance the bot’s conversational flow, making interactions feel smoother, more relevant, and less robotic.

Key Responsibilities

1. Scheduled Message Timing: Each plugin will assign a "send time" for its response messages, allowing for scheduled interactions that provide more thoughtful and human-like responses rather than instant replies.

2. Dynamic Message Processing:

When a new message is added to the received messages database in an active session (private or group chat), the Smart Messaging System should analyze whether this new message is related to any already-scheduled responses.

If a relationship is detected, the system will process both the existing scheduled message and the new message together to generate a single, coherent response, effectively updating the interaction flow.

3. Adjusting or Canceling Responses:

The Smart Messaging System should be capable of adjusting the "send time" of messages or even canceling a response based on new incoming data, allowing for dynamic and adaptive interactions.

For instance, if a user asks a follow-up question related to a previously scheduled response, the system can merge the context of both messages to provide a combined answer rather than sending separate or redundant messages.

4. Session Management:

Enable the system to manage both private and group chat sessions, tracking message relationships and ensuring responses are tailored to each specific context.

For group chats, ensure that responses address the appropriate message threads and avoid overlapping or irrelevant replies, maintaining clarity and relevance within group discussions.

Acceptance Criteria

[ ] Each plugin assigns a "send time" for its messages, allowing for deferred and timed responses.

[ ] New messages within an active session trigger the system to assess and combine them with any scheduled, related messages, resulting in a unified response.

[ ] The Smart Messaging System dynamically adjusts "send times" or cancels responses as needed, ensuring natural, human-like feedback.

[ ] Responses are correctly processed for both private and group chats, with proper session management ensuring appropriate context and relevance.

Diagram

flowchart TB
    subgraph "Message Scheduling System"
        ToSend[(tosend-messages)]
        
        Job[["Trigger.dev Job:
            id: 'process-responses'
            interval: '5s'"]]
            
        CheckTime["Time Check:
            WHERE
            status = 'pending' AND
            send_at <= CURRENT_TIMESTAMP"]
            
        Combine["Response Combiner:
            1. Group by session_id
            2. Order by created_at
            3. Merge responses"]
            
        Send["Send Process:
            1. Format final response
            2. Send to user
            3. Update status"]
            
        Reset["Timer Reset:
            On new message:
            - Calculate new send_at
            - Update existing messages"]

        ToSend -->|Query| Job
        Job --> CheckTime
        CheckTime -->|Ready Messages| Combine
        Combine --> Send
        Send -->|Update| ToSend
        
        NewMsg[New Message] -.->|Trigger| Reset
        Reset --> ToSend
    end
    
    Monitor["Monitoring:
        - Schedule accuracy
        - Processing delays
        - Message volumes
        - Response times"]
        
    Monitor -.->|Track| Job

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