docs: update about page model info to Haiku 4.5 (#367)

* debug: add log to verify instrumentation initialization

* fix: improve Langfuse span filter to exclude all Next.js infrastructure traces

app/[lang]/about/cn/page.tsx

@@ -117,9 +117,9 @@ export default function AboutCN() {
                                     (TPS/TPM)。一旦超限，系统就会暂停，导致请求失败。
                                 </p>
                                 <p>
-                                    由于使用量过高，我已将模型从 Claude 更换为{" "}
+                                    由于使用量过高，我已将模型从 Opus 4.5 更换为{" "}
                                     <span className="font-semibold text-amber-700">
-                                        minimax-m2
+                                        Haiku 4.5
                                     </span>
                                     ，以降低成本。
                                 </p>

app/[lang]/about/ja/page.tsx

@@ -126,9 +126,9 @@ export default function AboutJA() {
                                 </p>
                                 <p>
                                     利用量の増加に伴い、コスト削減のためモデルを
-                                    Claude から{" "}
+                                    Opus 4.5 から{" "}
                                     <span className="font-semibold text-amber-700">
-                                        minimax-m2
+                                        Haiku 4.5
                                     </span>{" "}
                                     に変更しました。
                                 </p>

app/[lang]/about/page.tsx

@@ -129,9 +129,9 @@ export default function About() {
                                 </p>
                                 <p>
                                     Due to the high usage, I have changed the
-                                    model from Claude to{" "}
+                                    model from Opus 4.5 to{" "}
                                     <span className="font-semibold text-amber-700">
-                                        minimax-m2
+                                        Haiku 4.5
                                     </span>
                                     , which is more cost-effective.
                                 </p>

components/chat-panel.tsx

@@ -1281,24 +1281,6 @@ Continue from EXACTLY where you stopped.`,
                                     About
                                 </Link>
                             )}
-                        {!isMobile &&
-                            process.env.NEXT_PUBLIC_SHOW_ABOUT_AND_NOTICE ===
-                                "true" && (
-                                <Link
-                                    href="/about"
-                                    target="_blank"
-                                    rel="noopener noreferrer"
-                                >
-                                    <ButtonWithTooltip
-                                        tooltipContent="Due to high usage, I have changed the model to minimax-m2 and added some usage limits. See About page for details."
-                                        variant="ghost"
-                                        size="icon"
-                                        className="h-6 w-6 text-amber-500 hover:text-amber-600"
-                                    >
-                                        <AlertTriangle className="h-4 w-4" />
-                                    </ButtonWithTooltip>
-                                </Link>
-                            )}
                     </div>
                     <div className="flex items-center gap-1 justify-end overflow-visible">
                         <ButtonWithTooltip

instrumentation.ts

@@ -19,10 +19,13 @@ export function register() {
             const spanName = otelSpan.name
             // Skip Next.js HTTP infrastructure spans
             if (
-                spanName.startsWith("POST /") ||
-                spanName.startsWith("GET /") ||
+                spanName.startsWith("POST") ||
+                spanName.startsWith("GET") ||
+                spanName.startsWith("RSC") ||
                 spanName.includes("BaseServer") ||
-                spanName.includes("handleRequest")
+                spanName.includes("handleRequest") ||
+                spanName.includes("resolve page") ||
+                spanName.includes("start response")
             ) {
                 return false
             }
@@ -36,4 +39,5 @@ export function register() {
 
     // Register globally so AI SDK's telemetry also uses this processor
     tracerProvider.register()
+    console.log("[Langfuse] Instrumentation initialized successfully")
 }