add lean4/src/SovereignCorpus/Bridge/Granite4Schema.lean

lean4/src/SovereignCorpus/Bridge/Granite4Schema.lean

@@ -0,0 +1,55 @@
+import Lean.Data.Json.FromToJson
+
+namespace SovereignCorpus.Bridge
+
+open Lean
+
+structure ProblemMeta where
+  source : String
+  timestamp : String
+  operatorSig : String
+  maxSteps : Nat
+  allowedTactics : List String
+deriving Repr, Inhabited, Lean.FromJson, Lean.ToJson
+
+structure GraniteProblem where
+  id : String
+  statement : String
+  context : List String
+  tacticHint : Option String
+  meta : ProblemMeta
+deriving Repr, Inhabited, Lean.FromJson, Lean.ToJson
+
+inductive ResponseStatus where
+  | proposed
+  | corrected
+  | failed
+deriving Repr, Inhabited, Lean.FromJson, Lean.ToJson
+
+inductive DiagnosticSeverity where
+  | info
+  | warning
+  | error
+deriving Repr, Inhabited, Lean.FromJson, Lean.ToJson
+
+structure Span where
+  startLine : Nat
+  startCol : Nat
+  endLine : Nat
+  endCol : Nat
+deriving Repr, Inhabited, Lean.FromJson, Lean.ToJson
+
+structure Diagnostic where
+  severity : DiagnosticSeverity
+  message : String
+  span : Option Span
+deriving Repr, Inhabited, Lean.FromJson, Lean.ToJson
+
+structure GraniteResponse where
+  problemId : String
+  status : ResponseStatus
+  proofScript : String
+  diagnostics : List Diagnostic
+deriving Repr, Inhabited, Lean.FromJson, Lean.ToJson
+
+end SovereignCorpus.Bridge