fix(danisman): M2 (6) — 100 mesajı aşan geçmişte en yeni 100 dönsün

sohbetGecmisiGetir yeniden eskiye sıralayıp 100 alır, sonra çevirir; aynı
saniyedeki soru-cevap sırası rowid ile korunur. GET /api/soru da aynı
sorguyu kullanır (iki kopya vardı).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

src/app/api/soru/route.ts

@@ -1,4 +1,4 @@
-import { eq, desc, asc } from "drizzle-orm";
+import { eq, desc } from "drizzle-orm";
 import type { NextRequest } from "next/server";
 import { getSession } from "@/lib/session";
 import { appDb, schema } from "@/lib/appdb";
@@ -10,7 +10,7 @@ import {
 } from "@/lib/credits";
 import { createUIMessageStream, createUIMessageStreamResponse } from "ai";
 import { anahtarVar, SORUMLULUK_REDDI } from "@/lib/ai/client";
-import { kullanicininRaporu } from "@/features/rapor/rapor-queries";
+import { kullanicininRaporu, sohbetGecmisiGetir } from "@/features/rapor/rapor-queries";
 import type { AracBaglami } from "@/lib/ai/araclar";
 import { danismanAkisi } from "@/lib/ai/sohbet-akisi";
 import { sistemPromptu } from "@/lib/ai/danisman-prompt";
@@ -52,16 +52,7 @@ export async function GET() {
     return Response.json({ error: "Oturum gerekli." }, { status: 401 });
   }
   const [mesajlar, kullanici] = await Promise.all([
-    appDb
-      .select({
-        id: schema.chatMessages.id,
-        role: schema.chatMessages.role,
-        content: schema.chatMessages.content,
-      })
-      .from(schema.chatMessages)
-      .where(eq(schema.chatMessages.userId, session.user.id))
-      .orderBy(asc(schema.chatMessages.createdAt))
-      .limit(100),
+    sohbetGecmisiGetir(session.user.id),
     appDb.query.user.findFirst({
       where: eq(schema.user.id, session.user.id),
       columns: { creditBalance: true },