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TGACH & dvachbot — Architecture Specification

1. System Components

Connects the tgach.top web interface with @dvach_Chatbot via WebSocket and FastAPI pipelines.

graph LR
    Board[2ch.hk Board Ingest] --> Transcoder[Atkinson 1-Bit Dithering & WebP Transcoder]
    Transcoder --> SQLite[(Media Catalog)]
    Transcoder --> TG[@dvach_Chatbot Publisher]
    Transcoder --> Web[tgach.top WebSocket Client]

2. Atkinson Dithering Error Diffusion Matrix

Distributes $\frac{1}{8}$ of quantization error to 6 neighboring pixels:

$(x+1, y)$, $(x+2, y)$
$(x-1, y+1)$, $(x, y+1)$, $(x+1, y+1)$
$(x, y+2)$