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.
2026-08-02 21:37:25 +03:00
parent 2278d2a218
commit c2aba25814
12 changed files with 548 additions and 98 deletions
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -26,7 +26,9 @@ jobs:
          IYZICO_API_KEY=${{ secrets.IYZICO_API_KEY }}
          IYZICO_SECRET_KEY=${{ secrets.IYZICO_SECRET_KEY }}
          IYZICO_BASE_URL=${{ secrets.IYZICO_BASE_URL }}
+          AI_SAGLAYICI=${{ secrets.AI_SAGLAYICI }}
          ANTHROPIC_API_KEY=${{ secrets.ANTHROPIC_API_KEY }}
+          GEMINI_API_KEY=${{ secrets.GEMINI_API_KEY }}
          EOF

      - name: Build & deploy
--- a/data/app.db
+++ b/data/app.db
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
  "dependencies": {
    "@anthropic-ai/sdk": "^0.112.4",
    "@cds/city": "^1.1.0",
+    "@google/genai": "^2.15.0",
    "@libsql/client": "^0.17.4",
    "@number-flow/react": "^0.6.2",
    "@react-pdf/renderer": "^4.5.1",
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -14,6 +14,9 @@ importers:
      '@cds/city':
        specifier: ^1.1.0
        version: 1.1.0
+      '@google/genai':
+        specifier: ^2.15.0
+        version: 2.15.0(@modelcontextprotocol/sdk@1.29.0(zod@4.4.3))
      '@libsql/client':
        specifier: ^0.17.4
        version: 0.17.4
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+    engines: {node: '>=20.0.0'}
+    peerDependencies:
+      '@modelcontextprotocol/sdk': ^1.25.2
+    peerDependenciesMeta:
+      '@modelcontextprotocol/sdk':
+        optional: true
+
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    hasBin: true

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@@ -3689,6 +3744,10 @@ packages:
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+
  which-boxed-primitive@1.1.1:
    resolution: {integrity: sha512-TbX3mj8n0odCBFVlY8AxkqcHASw3L60jIuF8jFP78az3C2YhmGvqbHBpAjTRH2/xqYunrJ9g1jSyjCjpoWzIAA==}
    engines: {node: '>= 0.4'}
@@ -6465,6 +6585,19 @@ snapshots:

  '@floating-ui/utils@0.2.12': {}

+  '@google/genai@2.15.0(@modelcontextprotocol/sdk@1.29.0(zod@4.4.3))':
+    dependencies:
+      google-auth-library: 10.9.1
+      p-retry: 4.6.2
+      protobufjs: 7.6.5
+      ws: 8.21.1
+    optionalDependencies:
+      '@modelcontextprotocol/sdk': 1.29.0(zod@4.4.3)
+    transitivePeerDependencies:
+      - bufferutil
+      - supports-color
+      - utf-8-validate
+
  '@hono/node-server@1.19.14(hono@4.12.31)':
    dependencies:
      hono: 4.12.31
@@ -6693,6 +6826,29 @@ snapshots:
    transitivePeerDependencies:
      - supports-color

+  '@modelcontextprotocol/sdk@1.29.0(zod@4.4.3)':
+    dependencies:
+      '@hono/node-server': 1.19.14(hono@4.12.31)
+      ajv: 8.20.0
+      ajv-formats: 3.0.1(ajv@8.20.0)
+      content-type: 1.0.5
+      cors: 2.8.6
+      cross-spawn: 7.0.6
+      eventsource: 3.0.7
+      eventsource-parser: 3.1.0
+      express: 5.2.1
+      express-rate-limit: 8.6.0(express@5.2.1)
+      hono: 4.12.31
+      jose: 6.2.3
+      json-schema-typed: 8.0.2
+      pkce-challenge: 5.0.1
+      raw-body: 3.0.2
+      zod: 4.4.3
+      zod-to-json-schema: 3.25.2(zod@4.4.3)
+    transitivePeerDependencies:
+      - supports-color
+    optional: true
+
  '@napi-rs/wasm-runtime@1.1.6(@emnapi/core@1.10.0)(@emnapi/runtime@1.10.0)':
    dependencies:
      '@emnapi/core': 1.10.0
@@ -6780,6 +6936,26 @@ snapshots:
    dependencies:
      safe-buffer: 5.2.1

+  '@protobufjs/aspromise@1.1.2': {}
+
+  '@protobufjs/base64@1.1.2': {}
+
+  '@protobufjs/codegen@2.0.5': {}
+
+  '@protobufjs/eventemitter@1.1.1': {}
+
+  '@protobufjs/fetch@1.1.1':
+    dependencies:
+      '@protobufjs/aspromise': 1.1.2
+
+  '@protobufjs/float@1.0.2': {}
+
+  '@protobufjs/path@1.1.2': {}
+
+  '@protobufjs/pool@1.1.0': {}
+
+  '@protobufjs/utf8@1.1.2': {}
+
  '@radix-ui/number@1.1.2': {}

  '@radix-ui/primitive@1.1.6': {}
@@ -7926,6 +8102,8 @@ snapshots:
    dependencies:
      csstype: 3.2.3

+  '@types/retry@0.12.0': {}
+
  '@types/trusted-types@2.0.7':
    optional: true

@@ -8323,6 +8501,8 @@ snapshots:
    dependencies:
      require-from-string: 2.0.2

+  bignumber.js@9.3.1: {}
+
  bindings@1.5.0:
    dependencies:
      file-uri-to-path: 1.0.0
@@ -8378,6 +8558,8 @@ snapshots:
      node-releases: 2.0.51
      update-browserslist-db: 1.2.3(browserslist@4.28.6)

+  buffer-equal-constant-time@1.0.1: {}
+
  buffer-from@1.1.2: {}

  buffer@5.7.1:
@@ -8728,6 +8910,8 @@ snapshots:
    dependencies:
      assert-plus: 1.0.0

+  data-uri-to-buffer@4.0.1: {}
+
  data-view-buffer@1.0.2:
    dependencies:
      call-bound: 1.0.4
@@ -8864,6 +9048,10 @@ snapshots:
      jsbn: 0.1.1
      safer-buffer: 2.1.2

+  ecdsa-sig-formatter@1.0.11:
+    dependencies:
+      safe-buffer: 5.2.1
+
  ee-first@1.1.1: {}

  electron-to-chromium@1.5.394: {}
@@ -9429,6 +9617,11 @@ snapshots:
    optionalDependencies:
      picomatch: 4.0.5

+  fetch-blob@3.2.0:
+    dependencies:
+      node-domexception: 1.0.0
+      web-streams-polyfill: 3.3.3
+
  fflate@0.8.3: {}

  figures@6.1.0:
@@ -9490,6 +9683,10 @@ snapshots:

  forever-agent@0.6.1: {}

+  formdata-polyfill@4.0.10:
+    dependencies:
+      fetch-blob: 3.2.0
+
  forwarded@0.2.0: {}

  framer-motion@12.42.2(react-dom@19.2.4(react@19.2.4))(react@19.2.4):
@@ -9532,6 +9729,22 @@ snapshots:

  fuzzysort@3.1.0: {}

+  gaxios@7.3.0:
+    dependencies:
+      extend: 3.0.2
+      https-proxy-agent: 7.0.6
+      node-fetch: 3.3.2
+    transitivePeerDependencies:
+      - supports-color
+
+  gcp-metadata@8.1.2:
+    dependencies:
+      gaxios: 7.3.0
+      google-logging-utils: 1.1.3
+      json-bigint: 1.0.0
+    transitivePeerDependencies:
+      - supports-color
+
  generator-function@2.0.1: {}

  gensync@1.0.0-beta.2: {}
@@ -9600,6 +9813,19 @@ snapshots:
      define-properties: 1.2.1
      gopd: 1.2.0

+  google-auth-library@10.9.1:
+    dependencies:
+      base64-js: 1.5.1
+      ecdsa-sig-formatter: 1.0.11
+      gaxios: 7.3.0
+      gcp-metadata: 8.1.2
+      google-logging-utils: 1.1.3
+      jws: 4.0.1
+    transitivePeerDependencies:
+      - supports-color
+
+  google-logging-utils@1.1.3: {}
+
  gopd@1.2.0: {}

  graceful-fs@4.2.11: {}
@@ -9698,6 +9924,13 @@ snapshots:
      jsprim: 2.0.2
      sshpk: 1.18.0

+  https-proxy-agent@7.0.6:
+    dependencies:
+      agent-base: 7.1.4
+      debug: 4.4.3
+    transitivePeerDependencies:
+      - supports-color
+
  human-signals@2.1.0: {}

  human-signals@8.0.1: {}
@@ -9963,6 +10196,10 @@ snapshots:

  jsesc@3.1.0: {}

+  json-bigint@1.0.0:
+    dependencies:
+      bignumber.js: 9.3.1
+
  json-buffer@3.0.1: {}

  json-parse-even-better-errors@2.3.1: {}
@@ -10012,6 +10249,17 @@ snapshots:
      object.assign: 4.1.7
      object.values: 1.2.1

+  jwa@2.0.1:
+    dependencies:
+      buffer-equal-constant-time: 1.0.1
+      ecdsa-sig-formatter: 1.0.11
+      safe-buffer: 5.2.1
+
+  jws@4.0.1:
+    dependencies:
+      jwa: 2.0.1
+      safe-buffer: 5.2.1
+
  katex@0.16.47:
    dependencies:
      commander: 8.3.0
@@ -10136,6 +10384,8 @@ snapshots:
      chalk: 5.6.2
      is-unicode-supported: 1.3.0

+  long@5.3.2: {}
+
  longest-streak@3.1.0: {}

  loose-envify@1.4.0:
@@ -10643,6 +10893,8 @@ snapshots:
    dependencies:
      semver: 7.8.5

+  node-domexception@1.0.0: {}
+
  node-exports-info@1.6.2:
    dependencies:
      array.prototype.flatmap: 1.3.3
@@ -10650,6 +10902,12 @@ snapshots:
      object.entries: 1.1.9
      semver: 6.3.1

+  node-fetch@3.3.2:
+    dependencies:
+      data-uri-to-buffer: 4.0.1
+      fetch-blob: 3.2.0
+      formdata-polyfill: 4.0.10
+
  node-releases@2.0.51: {}

  normalize-svg-path@1.1.0:
@@ -10797,6 +11055,11 @@ snapshots:
    dependencies:
      p-limit: 3.1.0

+  p-retry@4.6.2:
+    dependencies:
+      '@types/retry': 0.12.0
+      retry: 0.13.1
+
  p-try@2.2.0: {}

  package-manager-detector@1.8.0: {}
@@ -10957,6 +11220,20 @@ snapshots:

  property-information@7.2.0: {}

+  protobufjs@7.6.5:
+    dependencies:
+      '@protobufjs/aspromise': 1.1.2
+      '@protobufjs/base64': 1.1.2
+      '@protobufjs/codegen': 2.0.5
+      '@protobufjs/eventemitter': 1.1.1
+      '@protobufjs/fetch': 1.1.1
+      '@protobufjs/float': 1.0.2
+      '@protobufjs/path': 1.1.2
+      '@protobufjs/pool': 1.1.0
+      '@protobufjs/utf8': 1.1.2
+      '@types/node': 20.19.43
+      long: 5.3.2
+
  proxy-addr@2.0.7:
    dependencies:
      forwarded: 0.2.0
@@ -11242,6 +11519,8 @@ snapshots:

  restructure@3.0.2: {}

+  retry@0.13.1: {}
+
  reusify@1.1.0: {}

  robust-predicates@3.0.3: {}
@@ -11977,6 +12256,8 @@ snapshots:
      string_decoder: 1.3.0
      util-deprecate: 1.0.2

+  web-streams-polyfill@3.3.3: {}
+
  which-boxed-primitive@1.1.1:
    dependencies:
      is-bigint: 1.1.0
@@ -12053,6 +12334,11 @@ snapshots:
    dependencies:
      zod: 3.25.76

+  zod-to-json-schema@3.25.2(zod@4.4.3):
+    dependencies:
+      zod: 4.4.3
+    optional: true
+
  zod-validation-error@4.0.2(zod@4.4.3):
    dependencies:
      zod: 4.4.3
--- a/public/kolay-tercih-mark.png
+++ b/public/kolay-tercih-mark.png
--- a/src/app/api/soru/route.ts
+++ b/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,
--- a/src/app/sonuc/actions.ts
+++ b/src/app/sonuc/actions.ts
@@ -43,7 +43,7 @@ function aiHataMesaji(err: unknown): string {
  if (err instanceof RaporUretimHatasi) return err.message;
  if (err instanceof Error && err.message === "AI_KEY_MISSING") {
    // Yapılandırma detayı log'a; kullanıcıya altyapı sızdırmayan mesaj
-    console.error("[liste] ANTHROPIC_API_KEY eksik — üretim başlatılamadı");
+    console.error("[liste] Yapay Zeka anahtarı eksik — üretim başlatılamadı");
    return "Liste üretimi şu anda başlatılamıyor. Birazdan tekrar dener misin? Harcanan kredin otomatik iade edilir.";
  }
  console.error("[liste] üretim hatası:", err);
--- a/src/lib/ai/cagri.ts
+++ b/src/lib/ai/cagri.ts
@@ -0,0 +1,158 @@
+import { z } from "zod";
+import { zodOutputFormat } from "@anthropic-ai/sdk/helpers/zod";
+import { ThinkingLevel } from "@google/genai";
+import {
+  getAnthropic,
+  getGemini,
+  raporModeli,
+  saglayici,
+  sohbetModeli,
+} from "./client";
+
+/**
+ * Sağlayıcıdan bağımsız AI çağrı katmanı. Anthropic ve Gemini'nin SDK'ları
+ * yapılandırılmış çıktı ve stream için farklı şekiller kullanıyor; rapor ve
+ * sohbet kodu bu farkı görmesin diye tek arayüz burada toplanıyor.
+ */
+
+/**
+ * Gemini JSON Schema'nın yalnızca bir alt kümesini destekliyor; zod'un ürettiği
+ * $schema ve additionalProperties alanları isteği reddettiriyor, ayıklanıyor.
+ */
+function geminiSemasi(sema: z.ZodType): unknown {
+  const temizle = (dugum: unknown): unknown => {
+    if (Array.isArray(dugum)) return dugum.map(temizle);
+    if (dugum && typeof dugum === "object") {
+      const cikti: Record<string, unknown> = {};
+      for (const [k, v] of Object.entries(dugum as Record<string, unknown>)) {
+        if (k === "$schema" || k === "additionalProperties") continue;
+        cikti[k] = temizle(v);
+      }
+      return cikti;
+    }
+    return dugum;
+  };
+  return temizle(z.toJSONSchema(sema));
+}
+
+/**
+ * Gemini ücretsiz katmanı yoğunlukta 503/429 döndürüyor; bu geçici hatalarda
+ * artan bekleme ile yeniden dene. Kalıcı hatalar (400, 403) olduğu gibi fırlar.
+ */
+const GECICI_KODLAR = new Set([429, 500, 502, 503, 504]);
+
+async function geciciHatadaTekrarla<T>(
+  islem: () => Promise<T>,
+  denemeSayisi = 3,
+): Promise<T> {
+  let sonHata: unknown;
+  for (let i = 0; i < denemeSayisi; i++) {
+    try {
+      return await islem();
+    } catch (hata) {
+      const kod = (hata as { status?: number })?.status;
+      if (kod == null || !GECICI_KODLAR.has(kod) || i === denemeSayisi - 1) {
+        throw hata;
+      }
+      sonHata = hata;
+      await new Promise((r) => setTimeout(r, 2000 * 2 ** i));
+    }
+  }
+  throw sonHata;
+}
+
+/**
+ * Şemaya uyan tek seferlik çıktı üretir. Şemaya uymayan yanıtta null döner
+ * (çağıran taraf yeniden dener).
+ */
+export async function yapilandirilmisUret<T extends z.ZodType>(opts: {
+  system: string;
+  kullanici: string;
+  sema: T;
+  maxTokens: number;
+}): Promise<z.infer<T> | null> {
+  if (saglayici() === "gemini") {
+    const yanit = await geciciHatadaTekrarla(() =>
+      getGemini().models.generateContent({
+        model: raporModeli(),
+        contents: opts.kullanici,
+        config: {
+          systemInstruction: opts.system,
+          maxOutputTokens: opts.maxTokens,
+          responseMimeType: "application/json",
+          responseJsonSchema: geminiSemasi(opts.sema),
+          thinkingConfig: { thinkingLevel: ThinkingLevel.HIGH },
+        },
+      }),
+    );
+    const metin = yanit.text;
+    if (!metin) return null;
+    try {
+      const parsed = opts.sema.safeParse(JSON.parse(metin));
+      return parsed.success ? parsed.data : null;
+    } catch {
+      return null;
+    }
+  }
+
+  const yanit = await getAnthropic().messages.parse({
+    model: raporModeli(),
+    max_tokens: opts.maxTokens,
+    thinking: { type: "adaptive" },
+    system: opts.system,
+    messages: [{ role: "user", content: opts.kullanici }],
+    output_config: { format: zodOutputFormat(opts.sema) },
+  });
+  return yanit.parsed_output ?? null;
+}
+
+export type SohbetMesaji = { role: "user" | "assistant"; content: string };
+
+/**
+ * Sohbet yanıtını parça parça üretir. Sağlayıcıya bakmaksızın düz metin
+ * parçaları yield eder; çağıran taraf hem stream'ler hem biriktirip kaydeder.
+ */
+export async function* sohbetAkisi(opts: {
+  system: string;
+  mesajlar: SohbetMesaji[];
+  maxTokens: number;
+}): AsyncGenerator<string> {
+  if (saglayici() === "gemini") {
+    const akis = await geciciHatadaTekrarla(() =>
+      getGemini().models.generateContentStream({
+        model: sohbetModeli(),
+        contents: opts.mesajlar.map((m) => ({
+          // Gemini "assistant" yerine "model" rolünü kullanır
+          role: m.role === "assistant" ? "model" : "user",
+          parts: [{ text: m.content }],
+        })),
+        config: {
+          systemInstruction: opts.system,
+          maxOutputTokens: opts.maxTokens,
+          // Sohbet kısa ve hızlı olmalı; uzun düşünme adayı bekletiyor
+          thinkingConfig: { thinkingLevel: ThinkingLevel.LOW },
+        },
+      }),
+    );
+    for await (const parca of akis) {
+      const metin = parca.text;
+      if (metin) yield metin;
+    }
+    return;
+  }
+
+  const akis = getAnthropic().messages.stream({
+    model: sohbetModeli(),
+    max_tokens: opts.maxTokens,
+    system: opts.system,
+    messages: opts.mesajlar,
+  });
+  for await (const olay of akis) {
+    if (
+      olay.type === "content_block_delta" &&
+      olay.delta.type === "text_delta"
+    ) {
+      yield olay.delta.text;
+    }
+  }
+}
--- a/src/lib/ai/client.ts
+++ b/src/lib/ai/client.ts
@@ -1,11 +1,44 @@
 import Anthropic from "@anthropic-ai/sdk";
+import { GoogleGenAI } from "@google/genai";

-// Model seçimi (bilinçli): rapor tek seferlik ve yüksek değerli -> Opus 4.8;
+export type Saglayici = "anthropic" | "gemini";
+
+/** AI_SAGLAYICI env'i ile seçilir; tanımsızsa hangi anahtar varsa o kullanılır. */
+export function saglayici(): Saglayici {
+  const secim = process.env.AI_SAGLAYICI?.trim().toLowerCase();
+  if (secim === "gemini" || secim === "anthropic") return secim;
+  return process.env.GEMINI_API_KEY ? "gemini" : "anthropic";
+}
+
+/** Seçili sağlayıcının anahtarı tanımlı mı (mock moduna düşülecek mi)? */
+export function anahtarVar(): boolean {
+  return saglayici() === "gemini"
+    ? Boolean(process.env.GEMINI_API_KEY)
+    : Boolean(process.env.ANTHROPIC_API_KEY || process.env.ANTHROPIC_AUTH_TOKEN);
+}
+
+// Model seçimi (bilinçli):
+// Anthropic — rapor tek seferlik ve yüksek değerli -> Opus 4.8;
 // sohbet kredi başına marj hassas -> Haiku 4.5 (kullanıcı kararı, 22 Tem 2026).
-export const RAPOR_MODEL = "claude-opus-4-8";
-export const SOHBET_MODEL = "claude-haiku-4-5";
+// Gemini — ücretsiz katmanda yalnızca Flash ailesi açık (Pro'da kota 0),
+// bu yüzden rapor ve sohbet aynı modeli kullanır; ayrım thinking seviyesinde.
+const MODELLER: Record<Saglayici, { rapor: string; sohbet: string }> = {
+  anthropic: { rapor: "claude-opus-4-8", sohbet: "claude-haiku-4-5" },
+  gemini: { rapor: "gemini-3.6-flash", sohbet: "gemini-3.6-flash" },
+};

-const globalForAi = globalThis as unknown as { __anthropic?: Anthropic };
+export function raporModeli(): string {
+  return MODELLER[saglayici()].rapor;
+}
+
+export function sohbetModeli(): string {
+  return MODELLER[saglayici()].sohbet;
+}
+
+const globalForAi = globalThis as unknown as {
+  __anthropic?: Anthropic;
+  __gemini?: GoogleGenAI;
+};

 export function getAnthropic(): Anthropic {
  if (!process.env.ANTHROPIC_API_KEY && !process.env.ANTHROPIC_AUTH_TOKEN) {
@@ -17,5 +50,16 @@ export function getAnthropic(): Anthropic {
  return globalForAi.__anthropic;
 }

+export function getGemini(): GoogleGenAI {
+  const apiKey = process.env.GEMINI_API_KEY;
+  if (!apiKey) {
+    throw new Error("AI_KEY_MISSING");
+  }
+  if (!globalForAi.__gemini) {
+    globalForAi.__gemini = new GoogleGenAI({ apiKey });
+  }
+  return globalForAi.__gemini;
+}
+
 export const SORUMLULUK_REDDI =
  "KolayTercih bir karar destek aracıdır; öneriler resmî YÖK Atlas verisine dayanır ancak yerleşme garantisi verilmez. Nihai tercih sorumluluğu adaya aittir.";
--- a/src/lib/ai/rapor.ts
+++ b/src/lib/ai/rapor.ts
@@ -1,6 +1,6 @@
 import { z } from "zod";
-import { zodOutputFormat } from "@anthropic-ai/sdk/helpers/zod";
-import { getAnthropic, RAPOR_MODEL } from "./client";
+import { anahtarVar } from "./client";
+import { yapilandirilmisUret } from "./cagri";
 import {
  havuzOlustur,
  havuzuKompaktJson,
@@ -88,11 +88,7 @@ function programBilgisi(p: AdayProgram): RaporSonuc["programlar"][string] {
 // gerçek Yapay Zeka olmadan uçtan uca test edilebilsin diye. Prod'da asla çalışmaz.

 function mockAktif(): boolean {
-  return (
-    process.env.NODE_ENV !== "production" &&
-    !process.env.ANTHROPIC_API_KEY &&
-    !process.env.ANTHROPIC_AUTH_TOKEN
-  );
+  return process.env.NODE_ENV !== "production" && !anahtarVar();
 }

 function mockRapor(
@@ -140,7 +136,7 @@ function mockRapor(

  return {
    tercihler,
-    genelDegerlendirme: `(Dev mock — ANTHROPIC_API_KEY tanımlı değil, bu rapor gerçek Yapay Zeka çıktısı değildir.) ${params.sira.toLocaleString(
+    genelDegerlendirme: `(Dev mock — Yapay Zeka anahtarı tanımlı değil, bu rapor gerçek Yapay Zeka çıktısı değildir.) ${params.sira.toLocaleString(
      "tr-TR",
    )}. sıra için hayal/dengeli/garanti dağılımlı 24 tercihlik örnek liste kuruldu.${
      revizyonNotu ? ` Revizyon isteğin not alındı: "${revizyonNotu}".` : ""
@@ -189,7 +185,6 @@ export async function raporUret(
    return mockRapor(havuz, params, revizyonNotu);
  }

-  const client = getAnthropic();
  const havuzJson = havuzuKompaktJson(havuz);
  const kullaniciMesaji = [
    `Aday bilgisi: başarı sıralaması ${params.sira.toLocaleString("tr-TR")}, puan türü ${turLabel(params.tur)}.`,
@@ -215,24 +210,16 @@ export async function raporUret(
  let sonuc: z.infer<typeof RaporSchema> | null = null;
  let sonHata = "";
  for (let deneme = 0; deneme < 2; deneme++) {
-    const response = await client.messages.parse({
-      model: RAPOR_MODEL,
-      max_tokens: 16000,
-      thinking: { type: "adaptive" },
+    const parsed = await yapilandirilmisUret({
      system: SISTEM,
-      messages: [
-        {
-          role: "user",
-          content:
+      kullanici:
        deneme === 0
          ? kullaniciMesaji
          : `${kullaniciMesaji}\n\nÖNCEKİ DENEMENDE HATA VARDI: ${sonHata} Kurallara tam uy.`,
-        },
-      ],
-      output_config: { format: zodOutputFormat(RaporSchema) },
+      sema: RaporSchema,
+      maxTokens: 16000,
    });

-    const parsed = response.parsed_output;
    if (!parsed) {
      sonHata = "Çıktı şemaya uymadı.";
      continue;
--- a/src/lib/eposta.ts
+++ b/src/lib/eposta.ts
@@ -3,14 +3,15 @@
 *
 * Kurallar: mail istemcileri harici CSS, <style> kuralı, flexbox ve SVG
 * desteğini güvenilir biçimde sunmaz — bu yüzden düzen tablo tabanlı ve tüm
- * stiller satır içi. Logo işareti de SVG yerine renkli hücrelerle yeniden
- * çizilir (Outlook masaüstü border-radius'u yok sayar; kareler köşeli görünür,
- * kabul edilebilir bozulma).
+ * stiller satır içi. Logo işareti sitedeki SVG'nin raster kopyası olan
+ * `/kolay-tercih-mark.png` ile gösterilir (SVG'yi Gmail/Outlook engeller).
+ * Web fontları (Bricolage Grotesque, Cal Sans) <link> ile progresif olarak
+ * yüklenir; desteklemeyen istemciler sistem yazı tipine düşer.
 */

+import { SITE_URL } from "./seo";
+
 const MAVI = "#3b82f6";
-const SEFTALI = "#fdc7a7";
-const TURUNCU = "#ff5a00";
 const LACIVERT = "#0f172b";
 const GRI = "#475569";
 const KENAR = "#e2e8f0";
@@ -18,6 +19,10 @@ const ZEMIN = "#f8fafc";

 const YAZI_TIPI =
  "-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif";
+/** Sitedeki başlıklar Cal Sans (--font-heading); destekleyen istemcide o görünür. */
+const BASLIK_TIPI = `'Cal Sans', ${YAZI_TIPI}`;
+/** Sitedeki kelime markası Bricolage Grotesque (font-bricolage). */
+const MARKA_TIPI = `'Bricolage Grotesque', ${YAZI_TIPI}`;

 export type EpostaIcerik = {
  subject: string;
@@ -34,33 +39,15 @@ function kacir(deger: string): string {
    .replace(/"/g, "&quot;");
 }

-/** Logo işareti: üç yuvarlak kare + KolayTercih kelime markası. */
+/** Logo: sitedeki işaretin raster kopyası + KolayTercih kelime markası. */
 function baslik(): string {
  return `
    <table role="presentation" cellpadding="0" cellspacing="0" border="0">
      <tr>
-        <td style="padding-right:8px;">
-          <table role="presentation" cellpadding="0" cellspacing="0" border="0">
-            <tr>
-              <td width="19" height="19" style="width:19px;height:19px;background-color:${MAVI};border-radius:5px;font-size:0;line-height:0;">&nbsp;</td>
-              <td width="4" style="width:4px;font-size:0;line-height:0;">&nbsp;</td>
-              <td>
-                <table role="presentation" cellpadding="0" cellspacing="0" border="0">
-                  <tr>
-                    <td width="18" height="18" style="width:18px;height:18px;background-color:${SEFTALI};border-radius:5px;font-size:0;line-height:0;">&nbsp;</td>
-                  </tr>
-                  <tr>
-                    <td height="4" style="height:4px;font-size:0;line-height:0;">&nbsp;</td>
-                  </tr>
-                  <tr>
-                    <td width="18" height="18" style="width:18px;height:18px;background-color:${TURUNCU};border-radius:5px;font-size:0;line-height:0;">&nbsp;</td>
-                  </tr>
-                </table>
+        <td style="padding-right:6px;">
+          <img src="${SITE_URL}/kolay-tercih-mark.png" width="36" height="36" alt="" style="display:block;width:36px;height:36px;border:0;">
        </td>
-            </tr>
-          </table>
-        </td>
-        <td style="font-family:${YAZI_TIPI};font-size:20px;letter-spacing:-0.5px;color:${LACIVERT};">
+        <td style="font-family:${MARKA_TIPI};font-size:22px;letter-spacing:-0.05em;color:${LACIVERT};">
          <span style="font-weight:300;">Kolay</span><span style="font-weight:600;">Tercih</span>
        </td>
      </tr>
@@ -84,7 +71,9 @@ function kabuk({
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <meta name="color-scheme" content="light">
-<title>KolayTercih</title>
+<title>Merhaba, giriş bağlantını gönderdik</title>
+<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
+<link href="https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,300;12..96,600&family=Cal+Sans&display=swap" rel="stylesheet">
 </head>
 <body style="margin:0;padding:0;background-color:${ZEMIN};">
  <div style="display:none;max-height:0;overflow:hidden;opacity:0;color:transparent;font-size:1px;line-height:1px;">${onizleme}</div>
@@ -129,8 +118,8 @@ function buton(url: string, etiket: string): string {
 export function magicLinkEpostasi(url: string): EpostaIcerik {
  const guvenliUrl = kacir(url);
  const govde = `
-    <h1 style="margin:0 0 12px;font-family:${YAZI_TIPI};font-size:22px;line-height:1.35;font-weight:700;color:${LACIVERT};">
-      Giriş bağlantın hazır
+    <h1 style="margin:0 0 12px;font-family:${BASLIK_TIPI};font-size:22px;line-height:1.35;font-weight:700;color:${LACIVERT};">
+      Merhaba, giriş bağlantını gönderdik
    </h1>
    <p style="margin:0 0 24px;">
      Aşağıdaki butona tıklayarak KolayTercih hesabına giriş yapabilirsin.
@@ -148,13 +137,13 @@ export function magicLinkEpostasi(url: string): EpostaIcerik {
    </div>`;

  return {
-    subject: "KolayTercih giriş bağlantın",
+    subject: "Merhaba, giriş bağlantını gönderdik",
    html: kabuk({
      onizleme: "Giriş bağlantın 5 dakika geçerli.",
      govde,
    }),
    text: [
-      "KolayTercih giriş bağlantın",
+      "Merhaba, giriş bağlantını gönderdik",
      "",
      "Hesabına giriş yapmak için bu adresi tarayıcında aç:",
      url,
--- a/src/lib/sosyal-kanit.ts
+++ b/src/lib/sosyal-kanit.ts
@@ -69,6 +69,11 @@ export async function olusturulanListeSayisi(): Promise<number> {
 export async function anlikZiyaretci(): Promise<number | null> {
  if (!HOST || !API_KEY || !STATS_SITE_ID) return null;

+  // `Date.now()`den önce şart: prerender sırasında saat okumak yasak, istek
+  // anına bağlanmamız gerekiyor. Kardeş fonksiyondaki `connection()` bunu
+  // karşılamıyor — ikisi `Promise.all` ile paralel koşuyor.
+  await connection();
+
  const onceki = bellek.canli;
  if (onceki && Date.now() - onceki.zaman < CANLI_TTL_MS) return onceki.deger;