chore: enable consistent-return

src/plugin-sdk/provider-model-shared.ts

@@ -151,4 +151,5 @@ export function buildProviderReplayFamilyHooks(
           }),
       };
   }
+  throw new Error("Unsupported provider replay family");
 }

src/plugin-sdk/provider-stream.ts

@@ -139,6 +139,7 @@ export function buildProviderStreamFamilyHooks(
           createToolStreamWrapper(ctx.streamFn, ctx.extraParams?.tool_stream !== false),
       };
   }
+  throw new Error("Unsupported provider stream family");
 }
 
 // Public stream-wrapper helpers for provider plugins.

src/plugin-sdk/provider-tools.ts

@@ -172,4 +172,5 @@ export function buildProviderToolCompatFamilyHooks(family: ProviderToolCompatFam
         inspectToolSchemas: inspectGeminiToolSchemas,
       };
   }
+  throw new Error("Unsupported provider tool compatibility family");
 }

src/plugin-sdk/provider-web-search-contract-fields.ts

@@ -57,6 +57,7 @@ function createSearchCredentialFields(
         setCredentialValue: () => {},
       };
   }
+  throw new Error("Unsupported web search credential type");
 }
 
 function createConfiguredCredentialFields(