─── B ───

flowchart TB
    subgraph P["Perception Layer"]
        WT["WindowTracker"]
        SS["SemanticSensor"]
        VS["VisionSensor OCR"]
    end

    subgraph C["Cognitive Layer"]
        CE["CognitiveEngine"]
        SM["StateMachine"]
        AE["AutonomyEngine"]
    end

    subgraph O["Output Layer"]
        VE["VoiceEngine"]
        FR["FaceRenderer"]
        CB["ChatBubble"]
        KE["KinematicsEngine"]
    end

    subgraph I["Core Infrastructure"]
        EB["EventBus"]
    end

    WT -- "active_window_changed" --> EB
    SS -- "context_updated" --> EB
    VS -- "context_updated" --> EB
    EB -- "context_updated" --> CE
    EB -- "tick" --> SM
    EB -- "tick" --> KE
    CE -- "b_spoke" --> EB
    EB -- "b_spoke" --> VE
    EB -- "b_spoke" --> FR
    EB -- "b_spoke" --> CB
    CE -- "b_move_request" --> EB
    EB -- "b_move_request" --> KE
    AE -- "trigger_proactive_thought" --> EB
    EB -- "trigger_proactive_thought" --> CE

sequenceDiagram
    participant WT as WindowTracker
    participant SS as SemanticSensor
    participant VS as VisionSensor
    participant CE as CognitiveEngine
    participant VE as VoiceEngine
    participant FR as FaceRenderer

    WT->>SS: active_window_changed
    activate SS
    SS->>SS: UIA Tree Walk
    alt Extraction Success
        SS->>CE: context_updated
    else Failure / Cooldown
        SS->>VS: semantic_extraction_failed
        VS->>VS: OCR Capture
        VS->>CE: context_updated
    end
    deactivate SS

    CE->>CE: LLM Inference
    CE->>VE: b_spoke (Text + Emotion)
    activate VE
    VE->>VE: TTS + DSP Vocoder
    VE->>FR: speaking_start
    VE->>VE: Audio Output
    VE->>FR: speaking_end
    deactivate VE
    CE->>FR: b_move_request (Spatial)

flowchart LR
    subgraph Input["Input"]
        A["User Types"]
        B["User Speaks"]
        C["Screen Changes"]
    end

    subgraph Process["Processing"]
        D["EventBus"]
        E["CognitiveEngine"]
        F["StateMachine"]
    end

    subgraph Output["Output"]
        G["FaceRenderer"]
        H["VoiceEngine"]
        I["ChatBubble"]
        J["Kinematics"]
    end

    A -- types --> D
    B -- speaks --> D
    C -- changes --> D
    D -- routes --> E
    E -- drives --> F
    F -- animates --> G
    F -- speaks --> H
    F -- displays --> I
    E -- moves --> J

stateDiagram-v2
    [*] --> Idle
    Idle --> Listening : user_spoke / voice detected
    Listening --> Thinking : 1.2s delay
    Thinking --> Streaming : first token received
    Streaming --> Speaking : sentence_ready
    Speaking --> Streaming : next sentence
    Streaming --> Idle : [SILENCE] / end of response
    Speaking --> Idle : finished_speaking + linger
    Idle --> Proactive : autonomy trigger
    Proactive --> Thinking : context available
    Proactive --> Idle : no context / silence

flowchart TB
    A["User presses Ctrl+Shift+Alt+W"] --> B["B asks: what are you working on?"]
    B --> C["User defines goal"]
    C --> D["B monitors screen context"]
    D --> E{"Relevant content?"}
    E -- "Yes" --> F["B offers insight / help"]
    E -- "No" --> G["B stays silent"]
    F --> D
    G --> D