Monitor website speed and get alerted when performance drops

flowchart TD trig(["scheduled speed check"]):::trigtime s0[["test website speed"]]:::mi s1["score against thresholds"]:::task s2["send alert"]:::svc s3[("log results to sheet")]:::store trig --> s0 s0 --> s1 s1 --> s2 gx{"○ which alert channels apply"}:::gate s2 --> gx p00["send email"]:::task gx -->|"email alert"| p00 p10["post to Discord"]:::task gx -->|"discord alert"| p10 p20["send WhatsApp message"]:::task gx -->|"whatsapp alert"| p20 p00 --> s3 p10 --> s3 p20 --> s3 out[/"performance score and alert per site"/]:::out pay{{"catch slowdowns before losing visitors"}}:::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