%% Auto-Combo 12-factor scoring
%% Reflects: open-sse/services/autoCombo/scoring.ts (DEFAULT_WEIGHTS, sum = 1.0)
%% v3.8.40
flowchart TB
  Request["Incoming request"] --> Candidates["Eligible candidates<br/>(provider × model × account)"]
  Candidates --> Score["Compute composite score<br/>per candidate"]

  subgraph Factors["12-factor scoring weights (sum = 1.0)"]
    f1["health (0.20)"]
    f2["quota (0.15)"]
    f3["costInv (0.15)"]
    f4["latencyInv (0.12)"]
    f5["taskFit (0.08)"]
    f6["stability (0.05)"]
    f7["tierPriority (0.05)"]
    f8["tierAffinity (0.05)"]
    f9["specificityMatch (0.05)"]
    f10["contextAffinity (0.05)"]
    f11["connectionDensity (0.05)"]
    f12["resetWindowAffinity (0.00)"]
  end

  Score --> Factors
  Factors --> Final["Sort by score<br/>(desc)"]
  Final --> Top["Pick top-N targets"]
  Top --> Dispatch["Dispatch sequentially<br/>(short-circuit on success)"]