feat: 结构化输出按官方规范 + 两段式重试 + DeepSeek 复检开关

- 豆包: response_format.json_schema(strict)；DeepSeek: 切 Responses API text.format.json_schema
  （官方 chat/completions 通道不支持 json_schema），不支持时自动降级 json_object（[output] schema）
- 重试两段式：传输错误 cfg.retries 次；解析失败/空正文有独立 3 次专用重试，仍失败落 parse_fail
- 移除三票复核（decide_final/_verify_clean/verify_clean），DeepSeek 单次判定即终稿
- 新增 [run] deepseek_recheck 开关（默认 no=仅豆包初筛；yes=追加 DeepSeek 复检）
- GUI 不再覆盖 config 提示词；prompt 相对/前导斜杠路径按 exe 目录解析
- 报表去「票型/复核」列并同步说明；README/config.example.ini 同步
- 测试新增输出格式、重试、开关与提示词路径用例（50 passed）

tests/test_config.py

@@ -1,7 +1,9 @@
 # -*- coding: utf-8 -*-
 """config 模块测试：模板生成、缺项检测、读写回环、提示词路径。"""
+import violation_detector.config as config_mod
 from violation_detector.config import (
-    AppConfig, ensure_config, load_config, missing_fields, save_config,
+    AppConfig, effective_mode, ensure_config, load_config, missing_fields,
+    save_config,
 )
 
 
@@ -63,18 +65,57 @@ def test_mode_from_ini(tmp_path):
     assert load_config(str(ini)).mode == "cascade"
 
 
-def test_verify_clean_from_ini(tmp_path):
+def test_output_schema_from_ini(tmp_path):
     ini = tmp_path / "config.ini"
-    ini.write_text("[run]\nverify_clean = no\n", encoding="utf-8")
-    assert load_config(str(ini)).verify_clean is False
-    ini.write_text("[run]\nverify_clean = yes\n", encoding="utf-8")
-    assert load_config(str(ini)).verify_clean is True
-    # 非法值保持默认开启
-    ini.write_text("[run]\nverify_clean = 也许\n", encoding="utf-8")
-    assert load_config(str(ini)).verify_clean is True
-    # 未配置保持默认开启
+    ini.write_text("[output]\nschema = on\n", encoding="utf-8")
+    assert load_config(str(ini)).output_schema_mode == "on"
+    ini.write_text("[output]\nschema = off\n", encoding="utf-8")
+    assert load_config(str(ini)).output_schema_mode == "off"
+    ini.write_text("[output]\nschema = auto\n", encoding="utf-8")
+    assert load_config(str(ini)).output_schema_mode == "auto"
+    # 非法值回退 auto；未配置默认 auto
+    ini.write_text("[output]\nschema = 乱来\n", encoding="utf-8")
+    assert load_config(str(ini)).output_schema_mode == "auto"
     ini.write_text("[ark]\n", encoding="utf-8")
-    assert load_config(str(ini)).verify_clean is True
+    assert load_config(str(ini)).output_schema_mode == "auto"
+
+
+def test_output_schema_roundtrip(tmp_path):
+    ini = tmp_path / "config.ini"
+    save_config(AppConfig(output_schema_mode="off"), str(ini))
+    assert load_config(str(ini)).output_schema_mode == "off"
+    assert AppConfig().output_schema_mode == "auto"
+
+
+def test_deepseek_recheck_default_and_ini(tmp_path):
+    # 默认关
+    assert AppConfig().deepseek_recheck is False
+    ini = tmp_path / "config.ini"
+    ini.write_text("[run]\ndeepseek_recheck = yes\n", encoding="utf-8")
+    assert load_config(str(ini)).deepseek_recheck is True
+    ini.write_text("[run]\ndeepseek_recheck = no\n", encoding="utf-8")
+    assert load_config(str(ini)).deepseek_recheck is False
+    # 非法值/未配置保持默认关
+    ini.write_text("[run]\ndeepseek_recheck = 也许\n", encoding="utf-8")
+    assert load_config(str(ini)).deepseek_recheck is False
+    ini.write_text("[ark]\n", encoding="utf-8")
+    assert load_config(str(ini)).deepseek_recheck is False
+
+
+def test_effective_mode_respects_recheck_switch():
+    on = AppConfig(mode="cascade", deepseek_recheck=True)
+    off = AppConfig(mode="cascade", deepseek_recheck=False)
+    assert effective_mode(on, "cascade") == "cascade"
+    assert effective_mode(off, "cascade") == "doubao"
+    # 开关只影响 cascade；doubao/deepseek 不受影响
+    assert effective_mode(off, "doubao") == "doubao"
+    assert effective_mode(off, "deepseek") == "deepseek"
+
+
+def test_deepseek_recheck_roundtrip(tmp_path):
+    ini = tmp_path / "config.ini"
+    save_config(AppConfig(deepseek_recheck=True), str(ini))
+    assert load_config(str(ini)).deepseek_recheck is True
 
 
 def test_save_and_load_roundtrip(tmp_path):
@@ -104,3 +145,21 @@ def test_prompt_path_custom(tmp_path):
     p.write_text("x", encoding="utf-8")
     cfg = AppConfig(prompt_file=str(p))
     assert cfg.prompt_path == p
+
+
+def test_prompt_path_relative_prefers_app_dir(tmp_path, monkeypatch):
+    (tmp_path / "prompts.txt").write_text("x", encoding="utf-8")
+    monkeypatch.setattr(config_mod, "app_dir", lambda: tmp_path)
+    monkeypatch.setattr(config_mod, "resource_dir", lambda: tmp_path)
+    cfg = AppConfig(prompt_file="prompts.txt")
+    assert cfg.prompt_path == tmp_path / "prompts.txt"
+
+
+def test_prompt_path_leading_slash_treated_relative(tmp_path, monkeypatch):
+    # 无盘符的 /prompts.txt 应视为 exe 同目录的相对文件（Windows 容错）
+    (tmp_path / "prompts.txt").write_text("x", encoding="utf-8")
+    monkeypatch.setattr(config_mod, "app_dir", lambda: tmp_path)
+    monkeypatch.setattr(config_mod, "resource_dir", lambda: tmp_path)
+    for raw in ("/prompts.txt", "\\prompts.txt"):
+        cfg = AppConfig(prompt_file=raw)
+        assert cfg.prompt_path == tmp_path / "prompts.txt", raw