feat(M4-009,M4-010,M4-011): routing rules CRUD, per-user overrides, agent capabilities (#320)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

packages/types/src/chat/events.ts

@@ -74,6 +74,14 @@ export interface ChatMessagePayload {
   agentId?: string;
 }
 
+/** Routing decision summary included in session:info for transparency */
+export interface RoutingDecisionInfo {
+  model: string;
+  provider: string;
+  ruleName: string;
+  reason: string;
+}
+
 /** Session info pushed when session is created or model changes */
 export interface SessionInfoPayload {
   conversationId: string;
@@ -81,6 +89,8 @@ export interface SessionInfoPayload {
   modelId: string;
   thinkingLevel: string;
   availableThinkingLevels: string[];
+  /** Present when automatic routing determined the model for this session */
+  routingDecision?: RoutingDecisionInfo;
 }
 
 /** Client request to change thinking level */

packages/types/src/chat/index.ts

@@ -9,6 +9,7 @@ export type {
   ToolEndPayload,
   SessionUsagePayload,
   SessionInfoPayload,
+  RoutingDecisionInfo,
   SetThinkingPayload,
   ErrorPayload,
   ChatMessagePayload,