From e1e001c7e0b69b7bdf1fbabdaca6af84750f1713 Mon Sep 17 00:00:00 2001
From: Ken <ken@kenotron.com>
Date: Tue, 26 May 2026 19:06:01 +0000
Subject: [PATCH] feat: TypeScript types for sessions, artifacts, A2UI, tool
 calls, auth

---
 frontend/src/lib/types.ts | 107 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 frontend/src/lib/types.ts

diff --git a/frontend/src/lib/types.ts b/frontend/src/lib/types.ts
new file mode 100644
index 0000000..8fa2ab0
--- /dev/null
+++ b/frontend/src/lib/types.ts
@@ -0,0 +1,107 @@
+// Session types
+export interface Session {
+  session_id: string
+  status: string
+  bundle: string
+  created_at: string
+  last_activity: string
+  total_messages: number
+  tool_invocations: number
+  stale: boolean
+}
+
+export interface SessionListResponse {
+  sessions: Session[]
+  total: number
+}
+
+// Artifact types
+export interface Artifact {
+  name: string
+  session_id: string
+  size: number
+}
+
+export interface ArtifactContent {
+  name: string
+  session_id: string
+  content: string
+}
+
+// A2UI types
+export type A2UIBlockType = 'filters' | 'form' | 'table' | 'cards'
+
+export interface A2UIFilterOption {
+  label: string
+  value: string
+}
+
+export interface A2UIFiltersBlock {
+  type: 'filters'
+  filters: A2UIFilterOption[]
+}
+
+export interface A2UIFormField {
+  name: string
+  type: 'text' | 'number' | 'select'
+  label?: string
+  value?: string | number
+  options?: A2UIFilterOption[]
+}
+
+export interface A2UIFormBlock {
+  type: 'form'
+  fields: A2UIFormField[]
+  submitLabel: string
+}
+
+export interface A2UITableBlock {
+  type: 'table'
+  headers: string[]
+  rows: string[][]
+}
+
+export interface A2UICardItem {
+  title: string
+  description?: string
+  image?: string
+  price?: string
+  url?: string
+}
+
+export interface A2UICardsBlock {
+  type: 'cards'
+  items: A2UICardItem[]
+}
+
+export type A2UIBlock = A2UIFiltersBlock | A2UIFormBlock | A2UITableBlock | A2UICardsBlock
+
+// MCP / Tool Call types
+export interface MCPAppMeta {
+  ui: {
+    resourceUri: string
+    csp?: string
+  }
+}
+
+export type MCPAppStructuredContent = Record<string, unknown>
+
+export interface ToolCall {
+  id: string
+  name: string
+  args: Record<string, unknown>
+  result?: unknown
+  status: 'pending' | 'running' | 'complete' | 'error'
+  _meta?: MCPAppMeta
+  structuredContent?: MCPAppStructuredContent
+}
+
+// Auth types
+export interface AuthUser {
+  email: string
+}
+
+export interface LoginResponse {
+  token: string
+  email: string
+}