feat(bot): add conversational DM assistant flow

packages/adapters-db/src/telegram-pending-action-repository.ts

@@ -13,6 +13,10 @@ function parsePendingActionType(raw: string): TelegramPendingActionType {
     return raw
   }
 
+  if (raw === 'assistant_payment_confirmation') {
+    return raw
+  }
+
   throw new Error(`Unexpected telegram pending action type: ${raw}`)
 }
 

packages/application/src/index.ts

@@ -36,3 +36,7 @@ export {
   type PaymentConfirmationService,
   type PaymentConfirmationSubmitResult
 } from './payment-confirmation-service'
+export {
+  parsePaymentConfirmationMessage,
+  type ParsedPaymentConfirmation
+} from './payment-confirmation-parser'

packages/config/src/env.ts

@@ -33,6 +33,13 @@ const server = {
   OPENAI_API_KEY: z.string().min(1).optional(),
   PARSER_MODEL: z.string().min(1).default('gpt-4.1-mini'),
   PURCHASE_PARSER_MODEL: z.string().min(1).default('gpt-5-mini'),
+  ASSISTANT_MODEL: z.string().min(1).default('gpt-5-mini'),
+  ASSISTANT_TIMEOUT_MS: z.coerce.number().int().positive().default(15000),
+  ASSISTANT_MEMORY_MAX_TURNS: z.coerce.number().int().positive().default(12),
+  ASSISTANT_RATE_LIMIT_BURST: z.coerce.number().int().positive().default(5),
+  ASSISTANT_RATE_LIMIT_BURST_WINDOW_MS: z.coerce.number().int().positive().default(60000),
+  ASSISTANT_RATE_LIMIT_ROLLING: z.coerce.number().int().positive().default(50),
+  ASSISTANT_RATE_LIMIT_ROLLING_WINDOW_MS: z.coerce.number().int().positive().default(86400000),
   SCHEDULER_SHARED_SECRET: z.string().min(1).optional()
 }
 

packages/ports/src/telegram-pending-actions.ts

@@ -1,6 +1,9 @@
 import type { Instant } from '@household/domain'
 
-export const TELEGRAM_PENDING_ACTION_TYPES = ['anonymous_feedback'] as const
+export const TELEGRAM_PENDING_ACTION_TYPES = [
+  'anonymous_feedback',
+  'assistant_payment_confirmation'
+] as const
 
 export type TelegramPendingActionType = (typeof TELEGRAM_PENDING_ACTION_TYPES)[number]