Update dependencies, enhance AI integration, and improve email content

- Added @google/genai dependency for enhanced AI capabilities.
- Updated CI workflow to include new environment variables for AI integration.
- Refactored AI client to support multiple providers and improved key management.
- Enhanced email templates for better user engagement and clarity.
- Updated error handling in AI-related functions to provide clearer feedback.
- Made various improvements to the application structure and code clarity.

src/app/api/soru/route.ts

@@ -3,7 +3,8 @@ import type { NextRequest } from "next/server";
 import { getSession } from "@/lib/session";
 import { appDb, schema } from "@/lib/appdb";
 import { spendCreditForMessage, grantCredits } from "@/lib/credits";
-import { getAnthropic, SOHBET_MODEL, SORUMLULUK_REDDI } from "@/lib/ai/client";
+import { anahtarVar, SORUMLULUK_REDDI } from "@/lib/ai/client";
+import { sohbetAkisi } from "@/lib/ai/cagri";
 import { listeOzetiCikar, type RaporSonuc } from "@/lib/ai/rapor";
 import type { RaporParams } from "@/lib/rapor-havuzu";
 import { secimOzeti } from "@/lib/sihirbaz";
@@ -183,15 +184,11 @@ export async function POST(request: NextRequest) {
   });
 
   // Dev'de API key yoksa danışman mock cevap stream'ler (prod'da asla)
-  if (
-    process.env.NODE_ENV !== "production" &&
-    !process.env.ANTHROPIC_API_KEY &&
-    !process.env.ANTHROPIC_AUTH_TOKEN
-  ) {
+  if (process.env.NODE_ENV !== "production" && !anahtarVar()) {
     const mockEncoder = new TextEncoder();
     const mockUserId = session.user.id;
     const cevap =
-      `(Dev mock — ANTHROPIC_API_KEY tanımlı değil.) Sorunu aldım: "${mesaj.slice(0, 120)}". ` +
+      `(Dev mock — Yapay Zeka anahtarı tanımlı değil.) Sorunu aldım: "${mesaj.slice(0, 120)}". ` +
       `Gerçek danışman burada listen ve seçimlerin bağlamında yanıt verecek. ` +
       `${SORUMLULUK_REDDI}`;
     const mockReadable = new ReadableStream({
@@ -219,17 +216,14 @@ export async function POST(request: NextRequest) {
     });
   }
 
-  let client;
-  try {
-    client = getAnthropic();
-  } catch {
+  if (!anahtarVar()) {
     await grantCredits({
       userId: session.user.id,
       delta: 1,
       reason: "refund",
       refId: kullaniciMesajId,
     });
-    console.error("[soru] Yapay Zeka istemcisi kurulamadı (anahtar eksik olabilir)");
+    console.error("[soru] Yapay Zeka anahtarı tanımlı değil");
     return Response.json(
       {
         error:
@@ -250,36 +244,20 @@ export async function POST(request: NextRequest) {
   const encoder = new TextEncoder();
   const userId = session.user.id;
 
-  let stream;
-  try {
-    stream = client.messages.stream({
-      model: SOHBET_MODEL,
-      max_tokens: 1024,
-      system,
-      messages: mesajlar,
-    });
-  } catch {
-    await grantCredits({ userId, delta: 1, reason: "refund", refId: kullaniciMesajId });
-    return Response.json({ error: "Yapay Zeka'ya ulaşılamadı." }, { status: 502 });
-  }
-
   const readable = new ReadableStream({
     async start(controller) {
       let tamamlandi = false;
       try {
-        for await (const event of stream) {
-          if (
-            event.type === "content_block_delta" &&
-            event.delta.type === "text_delta"
-          ) {
-            controller.enqueue(encoder.encode(event.delta.text));
-          }
+        // Sağlayıcıya bağlanma hatası da ilk parçada burada yakalanır
+        let metin = "";
+        for await (const parca of sohbetAkisi({
+          system,
+          mesajlar,
+          maxTokens: 1024,
+        })) {
+          metin += parca;
+          controller.enqueue(encoder.encode(parca));
         }
-        const final = await stream.finalMessage();
-        const metin = final.content
-          .filter((b) => b.type === "text")
-          .map((b) => b.text)
-          .join("");
         await appDb.insert(schema.chatMessages).values({
           id: crypto.randomUUID(),
           userId,