Expose prompt requirement inspection

doc.go

@@ -4,7 +4,7 @@
 // Applications construct an [Engine] with [NewEngine], select ConfigKit
 // sources for prompts, profiles, and backends, and
 // call [Engine.InspectConfiguration], [Engine.InspectPrompt],
-// [Engine.InspectProfile], [Engine.Prepare],
+// [Engine.InspectRequirements], [Engine.InspectProfile], [Engine.Prepare],
 // [Engine.PrepareExecution], [Engine.Run], or [Engine.RunPrepared]. Concrete
 // registries, repositories, validators, and the built-in OpenAI-compatible
 // client remain internal implementation details.
@@ -12,7 +12,7 @@
 // # Concurrency and ownership
 //
 // An Engine supports concurrent InspectConfiguration, InspectPrompt,
-// InspectProfile, Prepare,
+// InspectRequirements, InspectProfile, Prepare,
 // PrepareExecution, Run, and RunPrepared calls. Engine-local backend policies
 // bound admitted Run and RunPrepared calls and model generations where
 // configured, while different backend pools and unlimited backends continue
@@ -20,11 +20,11 @@
 // still receive concurrent calls and must be safe for that use.
 //
 // ConfigKit captures the selected configuration when NewEngine constructs an
-// Engine. Prepare,
-// PrepareExecution, and Run copy request maps, slices, pointer values, and
-// JSON-compatible extra parameters before using them. InspectPrompt and
-// InspectProfile return copied inspection values. Returned values and values
-// passed to extension interfaces are likewise isolated from engine state.
+// Engine. Prepare, PrepareExecution, and Run copy request maps, slices, pointer
+// values, and JSON-compatible extra parameters before using them. InspectPrompt,
+// InspectRequirements, and InspectProfile return copied inspection values.
+// Returned values and values passed to extension interfaces are likewise
+// isolated from engine state.
 // Callers own those copies and may mutate them after the call that supplied or
 // returned them. [CapacityError] values are caller-owned and may be mutated
 // without affecting engine state or another error. Immutable [GenerationError]
@@ -58,7 +58,8 @@
 // [ConfigurationSources], [ConfigurationInspection], [BackendConfig],
 // [ProfileConfig], [RunRequest],
 // [ArtifactRef], [ExecutionTargetOverride], [ProfileInspection],
-// [PromptInputDefinition], [PromptInspection], [PreparedExecution],
+// [PromptInputDefinition], [PromptInspection], [RequirementInspectionRequest],
+// [RequirementInspection], [PreparedExecution],
 // [CapacityError], [GenerationError], [RetryExhaustedError], and
 // [ExecutionEvent], do not have stable JSON
 // representations. Direct API keys are nevertheless excluded from JSON for