From 293b151dd30a1e0b75c7d907a50d8d012f8270b6 Mon Sep 17 00:00:00 2001
From: Yi-Jyun Pan <me@pan93.com>
Date: Mon, 13 Oct 2025 02:38:48 +0800
Subject: [PATCH 1/4] feat(chat): upgrade Claude Sonnet to 4.5

---
 app/api/chat/route.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/api/chat/route.ts b/app/api/chat/route.ts
index 9bce391..c0ed74d 100644
--- a/app/api/chat/route.ts
+++ b/app/api/chat/route.ts
@@ -101,7 +101,7 @@ export async function POST(req: Request) {
     );
   }
 
-  const model = anthropic("claude-sonnet-4-20250514");
+  const model = anthropic("claude-sonnet-4-5");
   const posthogClient = await createPostHogClient();
 
   try {

From 008e0c7453c8d113c4ab1f9472587c7505f54e54 Mon Sep 17 00:00:00 2001
From: Yi-Jyun Pan <me@pan93.com>
Date: Mon, 13 Oct 2025 02:39:11 +0800
Subject: [PATCH 2/4] feat(chat): cache getQuestionSchema

---
 app/api/chat/route.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/app/api/chat/route.ts b/app/api/chat/route.ts
index c0ed74d..3685673 100644
--- a/app/api/chat/route.ts
+++ b/app/api/chat/route.ts
@@ -220,6 +220,11 @@ export async function POST(req: Request) {
                 : null,
             };
           },
+          providerOptions: {
+            anthropic: {
+              cacheControl: { type: 'ephemeral' },
+            },
+          },
         }),
         webSearch: anthropic.tools.webSearch_20250305({
           maxUses: 5,

From f8a3bba0f3a4359c4148a92dd2c7980390dae656 Mon Sep 17 00:00:00 2001
From: Yi-Jyun Pan <me@pan93.com>
Date: Mon, 13 Oct 2025 02:39:23 +0800
Subject: [PATCH 3/4] style: reformat codebase

---
 app/api/chat/route.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/api/chat/route.ts b/app/api/chat/route.ts
index 3685673..2f87d42 100644
--- a/app/api/chat/route.ts
+++ b/app/api/chat/route.ts
@@ -222,7 +222,7 @@ export async function POST(req: Request) {
           },
           providerOptions: {
             anthropic: {
-              cacheControl: { type: 'ephemeral' },
+              cacheControl: { type: "ephemeral" },
             },
           },
         }),

From 75464460f177121e39e4f56599592d08ce09111c Mon Sep 17 00:00:00 2001
From: Yi-Jyun Pan <me@pan93.com>
Date: Mon, 13 Oct 2025 02:40:35 +0800
Subject: [PATCH 4/4] refactor(chat): remove web search that is never used

---
 app/api/chat/route.ts | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/app/api/chat/route.ts b/app/api/chat/route.ts
index 2f87d42..9eccdbd 100644
--- a/app/api/chat/route.ts
+++ b/app/api/chat/route.ts
@@ -226,9 +226,6 @@ export async function POST(req: Request) {
             },
           },
         }),
-        webSearch: anthropic.tools.webSearch_20250305({
-          maxUses: 5,
-        }),
       },
     });