feat: add core and extensions suites for SDK tiering (#117)

* feat: add core and extensions suites for SDK tiering

Add new suites to support SDK tiering requirements:

Client suites:
- core (19 scenarios): Tier 1 requirements (base + auth)
- extensions (2 scenarios): Optional protocol extensions (client credentials)
- all (21 scenarios): Everything (core + extensions)
- auth (15 scenarios): Auth scenarios only (excludes extensions)

Server suites:
- core: Alias for 'active' (tier 1 requirements)

This allows SDK developers to run --suite core for tier 1 certification
while keeping extension tests available but not blocking.

* feat: promote elicitation tests from pending to active

Move 3 elicitation scenarios to active suite:
- elicitation-sep1330-enums
- tools-call-elicitation
- elicitation-sep1034-defaults

These tests are now passing in the Python SDK and ready for
SDK tiering requirements.

Remaining pending tests (2):
- json-schema-2020-12 (blocked on SDK PR #1135)
- server-sse-polling (blocked on SDK PR #1129)

src/scenarios/client/auth/index.ts

@@ -22,6 +22,7 @@ import {
   ClientCredentialsBasicScenario
 } from './client-credentials';
 
+// Auth scenarios (required for tier 1)
 export const authScenariosList: Scenario[] = [
   ...metadataScenarios,
   new AuthBasicCIMDScenario(),
@@ -34,7 +35,11 @@ export const authScenariosList: Scenario[] = [
   new ScopeRetryLimitScenario(),
   new ClientSecretBasicAuthScenario(),
   new ClientSecretPostAuthScenario(),
-  new PublicClientAuthScenario(),
+  new PublicClientAuthScenario()
+];
+
+// Extension scenarios (optional for tier 1 - protocol extensions)
+export const extensionScenariosList: Scenario[] = [
   new ClientCredentialsJwtScenario(),
   new ClientCredentialsBasicScenario()
 ];

src/scenarios/index.ts

@@ -53,24 +53,16 @@ import {
 
 import { DNSRebindingProtectionScenario } from './server/dns-rebinding';
 
-import { authScenariosList } from './client/auth/index';
+import { authScenariosList, extensionScenariosList } from './client/auth/index';
 import { listMetadataScenarios } from './client/auth/discovery-metadata';
 
 // Pending client scenarios (not yet fully tested/implemented)
 const pendingClientScenariosList: ClientScenario[] = [
-  // Elicitation scenarios (SEP-1330)
-  new ElicitationEnumsScenario(),
-
   // JSON Schema 2020-12 (SEP-1613)
   // This test is pending until the SDK includes PR #1135 which preserves
   // $schema, $defs, and additionalProperties fields in tool schemas.
   new JsonSchema2020_12Scenario(),
 
-  // On hold until elicitation schema types are fixed
-  // https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1863
-  new ToolsCallElicitationScenario(),
-  new ElicitationDefaultsScenario(),
-
   // On hold until server-side SSE improvements are made
   // https://github.com/modelcontextprotocol/typescript-sdk/pull/1129
   new ServerSSEPollingScenario()
@@ -145,8 +137,18 @@ export const clientScenarios = new Map<string, ClientScenario>(
   allClientScenariosList.map((scenario) => [scenario.name, scenario])
 );
 
-// Scenario scenarios
+// All client test scenarios (core + extensions)
 const scenariosList: Scenario[] = [
+  new InitializeScenario(),
+  new ToolsCallScenario(),
+  new ElicitationClientDefaultsScenario(),
+  new SSERetryScenario(),
+  ...authScenariosList,
+  ...extensionScenariosList
+];
+
+// Core scenarios (tier 1 requirements)
+const coreScenariosList: Scenario[] = [
   new InitializeScenario(),
   new ToolsCallScenario(),
   new ElicitationClientDefaultsScenario(),
@@ -191,4 +193,12 @@ export function listAuthScenarios(): string[] {
   return authScenariosList.map((scenario) => scenario.name);
 }
 
+export function listCoreScenarios(): string[] {
+  return coreScenariosList.map((scenario) => scenario.name);
+}
+
+export function listExtensionScenarios(): string[] {
+  return extensionScenariosList.map((scenario) => scenario.name);
+}
+
 export { listMetadataScenarios };