Keep inventory in sync across systems and log every update

flowchart TD trig>"inventory update received"]:::trig s0["check update origin"]:::task s1["reformat update"]:::task s2["sync to other system"]:::task s3[("log update in spreadsheet")]:::store trig --> s0 s1 --> s2 s2 --> s3 gx{"× update from this system or external"}:::gate s0 --> gx p00["continue processing"]:::task gx -->|"external source"| p00 p10["discard update"]:::task gx -->|"internal echo"| p10 p00 --> s1 p10 --> s1 out[/"inventory synced across systems"/]:::out pay{{"accurate stock counts everywhere"}}:::pay s3 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff