Use gemini-2.0-flash-lite + retry

backend/agents/delta_agent.py

@@ -3,6 +3,7 @@ Delta.com browser agent — finds companion certificate availability.
 Uses google-genai (Gemini Flash free tier) with Playwright browser tools.
 """
 
+import asyncio
 import json
 import os
 import re
@@ -14,7 +15,7 @@ from google.genai import types
 from ..models import Cabin, FlightOption, TripSearchRequest
 from ..tools.browser import BrowserSession
 
-_MODEL = "gemini-2.0-flash"
+_MODEL = "gemini-2.0-flash-lite"
 _MAX_ITER = 30
 _ECONOMY_CLASSES = ["L", "U", "T", "X", "V"]
 _FIRST_CLASSES = ["Z", "D", "I"]
@@ -96,9 +97,17 @@ async def search_companion_cert(
 
     last_text = ""
     for i in range(_MAX_ITER):
-        response = await client.aio.models.generate_content(
-            model=_MODEL, contents=contents, config=config
-        )
+        for attempt in range(4):
+            try:
+                response = await client.aio.models.generate_content(
+                    model=_MODEL, contents=contents, config=config
+                )
+                break
+            except Exception as e:
+                if "429" in str(e) and attempt < 3:
+                    await asyncio.sleep(15 * (attempt + 1))
+                else:
+                    raise
         contents.append(response.candidates[0].content)
 
         try:

backend/agents/ihg_agent.py

@@ -5,6 +5,7 @@ Uses google-genai (Gemini Flash free tier) with Playwright browser tools.
 
 from __future__ import annotations
 
+import asyncio
 import json
 import os
 import re
@@ -17,7 +18,7 @@ from google.genai import types
 from ..models import HotelOption
 from ..tools.browser import BrowserSession
 
-_MODEL = "gemini-2.0-flash"
+_MODEL = "gemini-2.0-flash-lite"
 _MAX_ITER = 30
 
 
@@ -93,9 +94,17 @@ async def _search_one(
 
     last_text = ""
     for i in range(_MAX_ITER):
-        response = await client.aio.models.generate_content(
-            model=_MODEL, contents=contents, config=config
-        )
+        for attempt in range(4):
+            try:
+                response = await client.aio.models.generate_content(
+                    model=_MODEL, contents=contents, config=config
+                )
+                break
+            except Exception as e:
+                if "429" in str(e) and attempt < 3:
+                    await asyncio.sleep(15 * (attempt + 1))
+                else:
+                    raise
         contents.append(response.candidates[0].content)
         try:
             if response.text:

backend/agents/resy_agent.py

@@ -3,6 +3,7 @@ Resy.com browser agent — finds restaurants eligible for the $20 monthly dining
 Uses google-genai (Gemini Flash free tier) with Playwright browser tools.
 """
 
+import asyncio
 import json
 import os
 import re
@@ -15,7 +16,7 @@ from google.genai import types
 from ..models import RestaurantOption
 from ..tools.browser import BrowserSession
 
-_MODEL = "gemini-2.0-flash"
+_MODEL = "gemini-2.0-flash-lite"
 _MAX_ITER = 20
 
 
@@ -92,9 +93,17 @@ async def find_resy_restaurants(
 
     last_text = ""
     for i in range(_MAX_ITER):
-        response = await client.aio.models.generate_content(
-            model=_MODEL, contents=contents, config=config
-        )
+        for attempt in range(4):
+            try:
+                response = await client.aio.models.generate_content(
+                    model=_MODEL, contents=contents, config=config
+                )
+                break
+            except Exception as e:
+                if "429" in str(e) and attempt < 3:
+                    await asyncio.sleep(15 * (attempt + 1))
+                else:
+                    raise
         contents.append(response.candidates[0].content)
         try:
             if response.text: