refactor: config_views 单入口 + 0语义统一 + FakeAI 收敛（清理单#1#2#3）

- #3 六个消费视图 resolver 收拢 app/platform/config_views(单一定义点):
  resolve_email/push/ai_settings ← 各服务文件, resolve_contact_flags/
  context_seed_map ← conversation, name_to_region_extras ← manager
  __init__ 内联取值(or None 语义原样)——函数体逐字搬入,服务层 import 之,
  旧定义删;Phase 3 编辑器/试金石与该模块对接
- #2 限流 0 语义统一: conn_limiter.try_acquire 的 limit 与 chat_rest 的
  rate_limit_per_hour 取值同款——0 或负 = 回退出厂默认(与姊妹键一致),
  原 conn_limiter 0=全拒改为回退;chat_rest 取值抽 _resolve_rate_limit
  纯函数供锚定
- #1 FakeAI 收敛进 conftest(超集: extract/evaluate/eval_calls),四份拷贝
  删(test_lead_email_trigger/test_cc_integration/test_channel_hygiene/
  test_lead_push_wiring——计划记三份,grep 实有四份;push_wiring 经
  evaluate 参数注入原本地固定返回值,断言零改动)

全量 558 passed(554 + 新增 4: 单入口/内联等价/两处 0 语义)

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

app/engine/services/email_service.py

@@ -5,8 +5,9 @@ from email.mime.text import MIMEText
 
 import aiosmtplib
 
-from app.engine.config import settings
 from app.engine.services.cc_completion import cc_state_for, outbound_e164, outbound_number
+# Task 10: 发信参数 resolver 收拢至 config_views(单一定义点)
+from app.platform.config_views import resolve_email_settings
 
 logger = logging.getLogger(__name__)
 
@@ -16,33 +17,6 @@ TAG_LABELS = {
 }
 CONTACT_LABELS = {"phone": "手机", "whatsapp": "WhatsApp", "email": "邮箱", "wechat": "微信"}
 
-# 平台默认发件人显示名(Task 9 前的硬编码值, 租户未配 sender_name 时沿用)
-_DEFAULT_SENDER_NAME = "HESUPIPE"
-
-
-def resolve_email_settings(config_data: dict | None) -> dict:
-    """租户 config.email → 发信参数(Task 9 接线; env settings 回退)。
-
-    回退规则(语义钉在 test_config_merge: 显式 None = 清空/未设置):
-    - smtp 缺省或显式 None → 整段用 env SMTP_*;
-    - smtp 给了 dict → 段内逐键回退(缺键/空串 → env 对应值, 租户可只改
-      密码/只换 host);
-    - sender_name 空 → 平台默认(_DEFAULT_SENDER_NAME);
-    - notify_emails 空列表 → env NOTIFY_EMAIL 单元素。
-    """
-    email = ((config_data or {}).get("email")) or {}
-    smtp = email.get("smtp") or {}
-    notify = [e for e in (email.get("notify_emails") or []) if e]
-    return {
-        "host": smtp.get("host") or settings.SMTP_HOST,
-        "port": smtp.get("port") or settings.SMTP_PORT,
-        "user": smtp.get("user") or settings.SMTP_USER,
-        "password": smtp.get("password") or settings.SMTP_PASS,
-        "sender_name": email.get("sender_name") or _DEFAULT_SENDER_NAME,
-        "notify_emails": notify or (
-            [settings.NOTIFY_EMAIL] if settings.NOTIFY_EMAIL else []),
-    }
-
 
 def _esc(v) -> str:
     return html.escape(str(v)) if v else ""