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feat(coding-agent): add model_select extension hook

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Fires when model changes via setModel(), cycleModel(), or session restore.
Includes source field ("set" | "cycle" | "restore") and previous model.
This commit is contained in:
Marc Krenn 2026-01-11 13:18:14 +01:00 • committed by Mario Zechner
parent 5db7cc693b
commit c41714662a
3 changed files with 42 additions and 0 deletions
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2
packages/coding-agent/src/core/extensions/index.ts
View file

@ -67,6 +67,8 @@ export type {
// Message Rendering
MessageRenderer,
MessageRenderOptions,
ModelSelectEvent,
ModelSelectSource,
ReadToolResultEvent,
// Commands
RegisteredCommand,

16
packages/coding-agent/src/core/extensions/types.ts
View file

@ -403,6 +403,20 @@ export interface TurnEndEvent {
toolResults: ToolResultMessage[];
}
// ============================================================================
// Model Events
// ============================================================================
export type ModelSelectSource = "set" | "cycle" | "restore";
/** Fired when a new model is selected */
export interface ModelSelectEvent {
type: "model_select";
model: Model<any>;
previousModel: Model<any> | undefined;
source: ModelSelectSource;
}
// ============================================================================
// User Bash Events
// ============================================================================
@ -521,6 +535,7 @@ export type ExtensionEvent =
| AgentEndEvent
| TurnStartEvent
| TurnEndEvent
| ModelSelectEvent
| UserBashEvent
| ToolCallEvent
| ToolResultEvent;
@ -645,6 +660,7 @@ export interface ExtensionAPI {
on(event: "agent_end", handler: ExtensionHandler<AgentEndEvent>): void;
on(event: "turn_start", handler: ExtensionHandler<TurnStartEvent>): void;
on(event: "turn_end", handler: ExtensionHandler<TurnEndEvent>): void;
on(event: "model_select", handler: ExtensionHandler<ModelSelectEvent>): void;
on(event: "tool_call", handler: ExtensionHandler<ToolCallEvent, ToolCallEventResult>): void;
on(event: "tool_result", handler: ExtensionHandler<ToolResultEvent, ToolResultEventResult>): void;
on(event: "user_bash", handler: ExtensionHandler<UserBashEvent, UserBashEventResult>): void;