fix(formula): 导出文件安全、清理回收、撤权校验与定义库可靠性（F01/F02/F05-F08）

- F01: _safe_unlink_export 不跟随符号链接、逐层校验父目录，导出失败路径与
  清理命令统一使用，只清理受控目录内本次创建的文件
- F02: 清理失败记录告警日志；清理命令回收 failed 任务残留文件
- F05: 定义保存事务内锁数据集行，配额原子检查；revision 冲突返回 409；
  保留最近 20 版历史；支持个人/团队共享；审计与变更同事务
- F06: 工作簿参数页毛利率改为只读快照；可编辑单元格解锁并加数值校验
- F07: 对账按指标分容差（人数 0、比率 0.0001、金额 0.01）；自定义列使用
  服务端 Decimal 表达式求值参考
- F08: 导出任务执行/下载阶段重校验账号有效性与角色
- 对话草稿会话恢复；载入定义后追问携带原定义（F04）；下载改浏览器直传
- 迁移 0006-0008；PostgreSQL 咨询锁语义修正（import_worker）

.env.example

@@ -12,4 +12,5 @@ MAX_IMPORT_ROWS=1000000
 AI_ENABLED=0
 OPENAI_API_KEY=
 OPENAI_MODEL=
+OPENAI_BASE_URL=https://api.openai.com/v1
 VITE_AG_GRID_LICENSE_KEY=

README.md

@@ -119,7 +119,7 @@ REFERENCE_DATASET_NAME='分析数据_原稿(1).xlsx' npm run test:e2e
 
 ## AI 与跨平台
 
-默认 AI_ENABLED=0。启用外部模型需配置 `AI_ENABLED=1`、`OPENAI_API_KEY`、`OPENAI_MODEL`，并完成机构数据处理审批。密钥只在后端。用户自由输入的问题也可能含敏感信息，不能仅凭不发送原始行就认定无隐私风险。模型不能提交 SQL、修改金额或修改账号；输出只允许受控意图，异常/拒答关闭执行。
+默认 AI_ENABLED=0。启用外部模型有两种方式，数据库配置优先：全权限管理员在页面「管理 → AI 模型」配置服务商（OpenAI 或本地 OpenAI 兼容服务如 Ollama / LM Studio / vLLM）、Base URL、API Key 与模型，可从 `/v1/models` 一键获取本地服务模型列表多选一；或配置环境变量 `AI_ENABLED=1`、`OPENAI_API_KEY`、`OPENAI_MODEL`（可选 `OPENAI_BASE_URL`）。均需完成机构数据处理审批。密钥只在后端：读取接口不回传密钥原文，配置修改记入审计（不含密钥）。用户自由输入的问题也可能含敏感信息，不能仅凭不发送原始行就认定无隐私风险。模型不能提交 SQL、修改金额或修改账号；输出只允许受控意图，异常/拒答关闭执行。
 
 前端为标准 Web，API 无平台耦合，可由后续 PWA、Tauri 或 Capacitor 客户端复用。当前没有打包桌面/移动客户端，也不在浏览器离线缓存财务数据。
 

finance/ai.py

@@ -0,0 +1,149 @@
+"""AI 模型配置：每个组织可在页面配置 OpenAI 或本地 OpenAI 兼容服务（Ollama / LM Studio / vLLM 等）。
+
+数据库配置优先；未配置时回退到环境变量（AI_ENABLED / OPENAI_*），保持旧行为兼容。
+API Key 只存后端，读取接口只做脱敏回显，绝不把密钥下发到浏览器。
+"""
+
+import httpx
+from django.conf import settings
+from django.http import JsonResponse
+
+from .models import AIConfig
+from .views import APIError, audit, body, endpoint
+
+PROVIDERS = ("openai", "local")
+OPENAI_BASE_URL = "https://api.openai.com/v1"
+
+
+def require_full_admin(request):
+    if request.member.departments:
+        raise APIError("没有配置 AI 模型的权限", 403)
+
+
+def resolve(org):
+    """返回生效的 AI 配置字典；未启用或配置不完整时返回 None。"""
+    cfg = AIConfig.objects.filter(organization=org).first()
+    if cfg:
+        base_url = (cfg.base_url or "").rstrip("/") or (OPENAI_BASE_URL if cfg.provider == "openai" else "")
+        key_required = cfg.provider == "openai"
+        if not cfg.enabled or not base_url or not cfg.model or (key_required and not cfg.api_key):
+            return None
+        return {
+            "enabled": True,
+            "provider": cfg.provider,
+            "base_url": base_url,
+            "api_key": cfg.api_key,
+            "model": cfg.model,
+        }
+    if settings.AI_ENABLED and settings.OPENAI_API_KEY and settings.OPENAI_MODEL:
+        return {
+            "enabled": True,
+            "provider": "openai",
+            "base_url": (settings.OPENAI_BASE_URL or OPENAI_BASE_URL).rstrip("/"),
+            "api_key": settings.OPENAI_API_KEY,
+            "model": settings.OPENAI_MODEL,
+        }
+    return None
+
+
+def org_models_endpoint(org):
+    """组织配置或环境回退的 base_url/api_key，用于探测模型列表。"""
+    cfg = AIConfig.objects.filter(organization=org).first()
+    if cfg:
+        base_url = (cfg.base_url or "").rstrip("/") or (OPENAI_BASE_URL if cfg.provider == "openai" else "")
+        return base_url, cfg.api_key
+    return (settings.OPENAI_BASE_URL or OPENAI_BASE_URL).rstrip("/"), settings.OPENAI_API_KEY
+
+
+@endpoint(("GET", "PUT"), roles=("admin",))
+def ai_config(request):
+    require_full_admin(request)
+    org = request.member.organization
+    if request.method == "GET":
+        cfg = AIConfig.objects.filter(organization=org).first()
+        return JsonResponse(
+            {
+                "enabled": cfg.enabled if cfg else False,
+                "provider": cfg.provider if cfg else "local",
+                "base_url": cfg.base_url if cfg else "",
+                "model": cfg.model if cfg else "",
+                "api_key_set": bool(cfg and cfg.api_key),
+                "updated_at": cfg.updated_at.isoformat() if cfg else None,
+            }
+        )
+    data = body(request)
+    enabled = data.get("enabled")
+    provider = data.get("provider")
+    base_url = data.get("base_url", "")
+    api_key = data.get("api_key", "")
+    model = data.get("model", "")
+    if type(enabled) is not bool or provider not in PROVIDERS:
+        raise APIError("AI 配置参数无效")
+    if not isinstance(base_url, str) or len(base_url) > 500:
+        raise APIError("Base URL 无效")
+    base_url = base_url.rstrip("/")
+    if base_url and not base_url.startswith(("http://", "https://")):
+        raise APIError("Base URL 必须以 http:// 或 https:// 开头")
+    if not isinstance(api_key, str) or len(api_key) > 500:
+        raise APIError("API Key 无效")
+    if not isinstance(model, str) or len(model) > 200:
+        raise APIError("模型名无效")
+    cfg = AIConfig.objects.filter(organization=org).first()
+    if enabled:
+        if provider == "local" and not base_url:
+            raise APIError("本地服务需要填写 Base URL，例如 http://127.0.0.1:11434/v1")
+        if provider == "openai" and not (api_key or (cfg and cfg.api_key)):
+            raise APIError("OpenAI 服务需要 API Key")
+        if not model:
+            raise APIError("启用前需要填写模型名，可点击“获取可用模型”选择")
+    key_changed = bool(api_key)
+    defaults = {
+        "enabled": enabled,
+        "provider": provider,
+        "base_url": base_url,
+        "model": model,
+    }
+    if api_key:
+        defaults["api_key"] = api_key
+    if not cfg:
+        AIConfig.objects.create(organization=org, **defaults)
+    else:
+        for field, value in defaults.items():
+            setattr(cfg, field, value)
+        cfg.save()
+    audit(
+        request,
+        "ai_config.update",
+        details={
+            "provider": provider,
+            "model": model,
+            "enabled": enabled,
+            "key_changed": key_changed,
+        },
+    )
+    return JsonResponse({"ok": True})
+
+
+@endpoint(roles=("admin",))
+def ai_models(request):
+    require_full_admin(request)
+    base_url, api_key = org_models_endpoint(request.member.organization)
+    if not base_url:
+        raise APIError("请先保存 Base URL 再获取模型列表", 400)
+    headers = {"Authorization": f"Bearer {api_key}"} if api_key else {}
+    try:
+        with httpx.Client(timeout=10) as client:
+            response = client.get(f"{base_url}/models", headers=headers)
+            response.raise_for_status()
+            data = response.json()
+        items = data.get("data", [])
+        ids = [m.get("id") for m in items if isinstance(m, dict) and isinstance(m.get("id"), str)]
+        if not ids and isinstance(data.get("models"), list):
+            ids = [
+                m.get("name")
+                for m in data["models"]
+                if isinstance(m, dict) and isinstance(m.get("name"), str)
+            ]
+        return JsonResponse({"items": ids[:200]})
+    except (httpx.HTTPError, ValueError, AttributeError) as exc:
+        raise APIError("无法从该服务获取模型列表，请检查 Base URL 与 API Key", 502) from exc

finance/assistant.py

@@ -1,14 +1,17 @@
 import json
 
 import httpx
-from django.conf import settings
 from django.http import JsonResponse
 
+from .ai import resolve
 from .analysis import METRICS, analyze, context, dimensions
 from .views import APIError, audit, body, dataset, endpoint, limit, preferences
 
 
-def model_intent(question, ds, ctx):
+def model_intent(question, ds, ctx, cfg=None):
+    cfg = cfg or resolve(ds.organization)
+    if not cfg:
+        raise APIError("尚未配置外部 AI 服务", 503)
     keys = [d["key"] for d in dimensions(ds)]
     schema = {
         "type": "object",
@@ -31,7 +34,7 @@ def model_intent(question, ds, ctx):
     }
     # Only schema, selected context and the user's question leave the server; never raw rows.
     payload = {
-        "model": settings.OPENAI_MODEL,
+        "model": cfg["model"],
         "store": False,
         "max_output_tokens": 1200,
         "input": [
@@ -55,8 +58,8 @@ def model_intent(question, ds, ctx):
     try:
         with httpx.Client(timeout=30) as client:
             response = client.post(
-                "https://api.openai.com/v1/responses",
-                headers={"Authorization": f"Bearer {settings.OPENAI_API_KEY}"},
+                f"{cfg['base_url']}/responses",
+                headers={"Authorization": f"Bearer {cfg['api_key']}"} if cfg["api_key"] else {},
                 json=payload,
             )
             response.raise_for_status()
@@ -107,12 +110,15 @@ def assistant(request, dataset_id):
     use_model = data.get("use_model", False)
     if type(use_model) is not bool:
         raise APIError("AI 模式必须为布尔值")
+    provider = "local"
     if use_model:
-        if not (settings.AI_ENABLED and settings.OPENAI_API_KEY and settings.OPENAI_MODEL):
-            raise APIError("尚未配置外部 AI 服务", 503)
+        cfg = resolve(request.member.organization)
+        if not cfg:
+            raise APIError("尚未配置外部 AI 服务；请管理员在「AI 模型」中配置", 503)
         if data.get("consent") is not True:
             raise APIError("请先同意发送问题与当前筛选上下文", 400)
-        intent = model_intent(question, ds, ctx)
+        provider = cfg["provider"]
+        intent = model_intent(question, ds, ctx, cfg)
     else:
         action = (
             "evidence"
@@ -140,21 +146,19 @@ def assistant(request, dataset_id):
     else:
         change = value["change"]
         change_text = f"{change:+.1%}" if change is not None else "不可计算（基期为零或数据缺失）"
-        answer = f"当前范围{METRICS[metric]}为 {value['current']:,.4f}，较基期变化 {change_text}。按当前规则识别出 {result['anomaly_count']} 个异常分组。"
+        answer = f"当前范围{METRICS[metric]}为 {value['current']:,.2f}，较基期变化 {change_text}。按当前规则识别出 {result['anomaly_count']} 个异常分组。"
         candidates = [r for r in result["rows"] if r["anomaly"]][:3]
         if candidates:
             answer += " 优先核查：" + "、".join(r["label"] for r in candidates) + "。"
         answer += " 这是数据贡献分解，不是因果结论。"
-    audit(
-        request, "assistant.query", ds.pk, {"provider": "openai" if use_model else "local", "intent": intent}
-    )
+    audit(request, "assistant.query", ds.pk, {"provider": provider, "intent": intent})
     return JsonResponse(
         {
             "answer": answer,
             "intent": intent,
             "context": result["context"],
             "version": ds.sha256,
-            "provider": "openai" if use_model else "local",
+            "provider": provider,
             "evidence": [
                 {"label": r["label"], "filters": r["filters"], "values": r["values"][metric]}
                 for r in result["rows"][:5]

finance/exporting.py

@@ -1,5 +1,6 @@
 import hashlib
 import hmac
+import logging
 import os
 import secrets
 import warnings
@@ -11,22 +12,62 @@ from django.conf import settings
 from django.utils import timezone
 from openpyxl import Workbook
 from openpyxl.cell import WriteOnlyCell
-from openpyxl.styles import Font, PatternFill
+from openpyxl.styles import Font, PatternFill, Protection
+from openpyxl.worksheet.datavalidation import DataValidation
 from openpyxl.worksheet.table import Table, TableColumn, TableStyleInfo
 
 from .analysis import METRICS, aggregations, context, dimensions, metrics, scoped_facts
 from .formula_columns import (
     RESERVED_DATA_HEADERS,
     ensure_available_metrics,
+    evaluate,
     metrics_used,
     to_excel,
     validate_column,
 )
 from .models import FormulaExport, Membership
 
+# Keep the private test seam while sharing the single evaluator implementation.
+_evaluate_expression = evaluate
+
 FORMULA_VERSION = "3"
 MAX_ROWS = 100_000
 MAX_GROUPS = 200
+RECONCILE_TOLERANCES = {
+    "customers": Decimal("0"),
+    "margin": Decimal("0.0001"),
+    "discount_rate": Decimal("0.0001"),
+    "upgrade_rate": Decimal("0.0001"),
+}
+DEFAULT_RECONCILE_TOLERANCE = Decimal("0.01")
+logger = logging.getLogger(__name__)
+
+
+def _safe_unlink_export(path, root):
+    """Delete only a file below the owned export root without following links."""
+    path, root = Path(path), Path(root).absolute()
+    if not path.is_absolute() or root.is_symlink() or path.is_symlink():
+        logger.warning("formula export cleanup refused unsafe path: %s", path)
+        return False
+    parent = path.parent
+    try:
+        if not parent.is_relative_to(root):
+            logger.warning("formula export cleanup refused out-of-root path: %s", path)
+            return False
+    except ValueError:
+        return False
+    current = parent
+    while current != root:
+        if current.is_symlink() or current.parent == current:
+            logger.warning("formula export cleanup refused linked parent: %s", path)
+            return False
+        current = current.parent
+    try:
+        path.unlink(missing_ok=True)
+        return True
+    except OSError:
+        logger.warning("formula export cleanup failed for %s", path, exc_info=True)
+        return False
 
 
 def _excel_number(value):
@@ -269,6 +310,19 @@ def build_formula_workbook(ds, member, export_context, output):
             ),
         )
     data.append(headers)
+    editable_indices = {len(dims) + 2, len(dims) + 3, len(dims) + 4, len(dims) + 5, len(dims) + 7}
+    if count:
+        numeric_input = DataValidation(
+            type="decimal", operator="between", formula1="-1e15", formula2="1e15", allow_blank=True
+        )
+        numeric_input.showErrorMessage = True
+        numeric_input.errorStyle = "stop"
+        numeric_input.errorTitle = "请输入数值"
+        numeric_input.error = "计算输入只接受范围内的数值或空白；请勿粘贴公式或文本。"
+        for index in editable_indices:
+            column_name = _column_name(index + 1)
+            numeric_input.add(f"{column_name}2:{column_name}{count + 1}")
+        data.data_validations.append(numeric_input)
     token_secret = secrets.token_bytes(32)
     customer_roster = {}
     gross_index = next((col["index"] for col in mapping["columns"] if col["role"] == "gross"), None)
@@ -329,6 +383,12 @@ def build_formula_workbook(ds, member, export_context, output):
                 f'{_column_name(len(dims) + 6)}{row_number},""))'
             ),
         )
+        for index in editable_indices:
+            cell = row[index]
+            if not hasattr(cell, "protection"):
+                cell = WriteOnlyCell(data, value=cell)
+            cell.protection = Protection(locked=False)
+            row[index] = cell
         data.append(row)
     customer_headers = [
         "Group",
@@ -408,7 +468,13 @@ def build_formula_workbook(ds, member, export_context, output):
         ],
         ["ROI 口径", mapping["roi_formula"], "按导入映射保存的公式分支", "否"],
         ["自营产品集合", _text_cell(parameters, ", ".join(products)), "升单率和自营收入口径", "否"],
-        ["产品毛利率", str(rates), "直接毛利缺失时的可编辑计算输入", "是"],
+        ["产品毛利率快照", str(rates), "导入时保存的只读口径；修改需重新确认导入映射", "否"],
+        [
+            "对账容差",
+            "人数 0；金额 0.01；比率 0.0001；自定义 0.01",
+            "服务器 Decimal 参考与 Excel 结果的绝对差；正式财务验收前需确认",
+            "否",
+        ],
         [
             "Excel 数值精度",
             "IEEE-754 双精度",
@@ -443,6 +509,10 @@ def build_formula_workbook(ds, member, export_context, output):
         ["变化率", "差额/ABS(基期)；基期为0或期间缺失时不可用。"],
         ["精度", "原始 Decimal 以文本留存；Excel 双精度存在细微误差可能。"],
         ["隐私", "客户标识替换为本文件随机 token，文件仍按敏感财务信息保护。"],
+        [
+            "编辑保护",
+            "工作表结构、人数去重、原始证据和公式列已保护；计算明细仅收入、成本、毛利输入、毛利率和原价金额可编辑。行结构变化请重新导出。",
+        ],
     ]:
         instructions.append(row)
     for definition in custom_columns:
@@ -559,6 +629,7 @@ def build_formula_workbook(ds, member, export_context, output):
             for key, name in METRICS.items():
                 formula_row = metric_rows[(label, key)]
                 value = reference[key]
+                tolerance = RECONCILE_TOLERANCES.get(key, DEFAULT_RECONCILE_TOLERANCE)
                 reconcile.append(
                     [
                         name,
@@ -567,24 +638,30 @@ def build_formula_workbook(ds, member, export_context, output):
                         "" if value is None else str(value),
                         f"='分析汇总'!{col}{formula_row}",
                         f'=IFERROR(E{reconcile_row}-D{reconcile_row},"")',
-                        f'=IF(D{reconcile_row}="","无参考",IF(ISNUMBER(F{reconcile_row}),IF(ABS(F{reconcile_row})<0.01,"通过","待复核"),"待复核"))',
+                        f'=IF(D{reconcile_row}="","无参考",IF(ISNUMBER(F{reconcile_row}),IF(ABS(F{reconcile_row})<={tolerance},"通过","待复核"),"待复核"))',
                     ]
                 )
                 reconcile_row += 1
             for index, definition in enumerate(custom_columns):
                 formula_row = metric_rows[(label, f"custom_{index}")]
+                custom_reference = evaluate(definition["expression"], reference)
                 reconcile.append(
                     [
                         _text_cell(reconcile, definition["name"]),
                         _text_cell(reconcile, label),
                         side_name,
-                        "自定义公式无服务器参考",
+                        "" if custom_reference is None else str(custom_reference),
                         f"='分析汇总'!{col}{formula_row}",
-                        "",
-                        "需业务验收",
+                        f'=IFERROR(E{reconcile_row}-D{reconcile_row},"")',
+                        f'=IF(D{reconcile_row}="","无参考",IF(ISNUMBER(F{reconcile_row}),IF(ABS(F{reconcile_row})<={DEFAULT_RECONCILE_TOLERANCE},"通过","待复核"),"待复核"))',
                     ]
                 )
                 reconcile_row += 1
+    for sheet in wb.worksheets:
+        sheet.protection.sheet = True
+        sheet.protection.selectLockedCells = False
+        sheet.protection.selectUnlockedCells = True
+    wb.security.lockStructure = True
     wb.calculation.fullCalcOnLoad = True
     wb.calculation.forceFullCalc = True
     wb.calculation.calcMode = "auto"
@@ -596,8 +673,8 @@ def process_formula_export(export_id):
     job = FormulaExport.objects.select_related("dataset", "user").get(pk=export_id)
     temporary = None
     target = None
+    root = Path(settings.MEDIA_ROOT) / "formula-exports"
     try:
-        root = Path(settings.MEDIA_ROOT) / "formula-exports"
         if root.is_symlink():
             raise ValueError("公式导出目录不能是符号链接")
         root.mkdir(parents=True, exist_ok=True, mode=0o700)
@@ -609,6 +686,8 @@ def process_formula_export(export_id):
         target.parent.chmod(0o700)
         temporary = target.with_name(f"{job.pk}.{secrets.token_hex(8)}.tmp")
         member = Membership.objects.get(user=job.user, organization=job.dataset.organization)
+        if not job.user.is_active or member.role not in ("admin", "analyst"):
+            raise PermissionError("账号已撤权，请重新提交导出")
         if set(member.departments) != set(job.departments):
             raise PermissionError("科室授权已变更，请重新提交导出")
         descriptor = os.open(temporary, os.O_WRONLY | os.O_CREAT | os.O_EXCL, 0o600)
@@ -621,13 +700,12 @@ def process_formula_export(export_id):
         job.save(update_fields=["path", "status", "error", "finished_at", "expires_at"])
         return stats
     except Exception as exc:
+        remaining = ""
         for path in (temporary, target):
-            try:
-                if path is not None and not path.is_symlink():
-                    path.unlink(missing_ok=True)
-            except OSError:
-                pass
-        job.status, job.error, job.path = "failed", str(exc)[:500], ""
+            if path is not None and not _safe_unlink_export(path, root):
+                if path.exists() or path.is_symlink():
+                    remaining = str(path)
+        job.status, job.error, job.path = "failed", str(exc)[:500], remaining
         job.finished_at, job.expires_at = timezone.now(), None
         job.save(update_fields=["status", "error", "path", "finished_at", "expires_at"])
         raise

finance/formula_columns.py

@@ -1,4 +1,5 @@
 import math
+from decimal import Decimal, localcontext
 
 from .analysis import METRICS
 
@@ -107,3 +108,27 @@ def to_excel(node, references):
     if "number" in node:
         return str(node["number"])
     return f"({to_excel(node['left'], references)}{OPERATORS[node['operator']]}{to_excel(node['right'], references)})"
+
+
+def evaluate(node, references):
+    """Evaluate a validated expression with Decimal values and #N/A semantics."""
+    with localcontext() as decimal_context:
+        decimal_context.prec = 64
+        return _evaluate(node, references)
+
+
+def _evaluate(node, references):
+    if "metric" in node:
+        return references.get(node["metric"])
+    if "number" in node:
+        return Decimal(str(node["number"]))
+    left, right = _evaluate(node["left"], references), _evaluate(node["right"], references)
+    if left is None or right is None:
+        return None
+    if node["operator"] == "add":
+        return left + right
+    if node["operator"] == "subtract":
+        return left - right
+    if node["operator"] == "multiply":
+        return left * right
+    return None if right == 0 else left / right

finance/formula_views.py

@@ -3,12 +3,14 @@ from pathlib import Path
 
 import httpx
 from django.conf import settings
+from django.db import transaction
+from django.db.models import Q
 from django.http import FileResponse, JsonResponse
 from django.utils import timezone
 
 from .analysis import METRICS, context, dimensions
 from .formula_columns import available_metrics, ensure_available_metrics, validate_column
-from .models import FormulaDefinition, FormulaExport
+from .models import Dataset, FormulaDefinition, FormulaExport
 from .views import APIError, audit, body, dataset, endpoint, limit
 
 
@@ -190,13 +192,23 @@ def formula_definitions(request, dataset_id):
     if request.member.departments:
         raise APIError("科室授权账号不可管理跨范围公式定义", 403)
     if request.method == "GET":
-        items = FormulaDefinition.objects.filter(dataset=ds, user=request.user).order_by("normalized_name")
+        items = (
+            FormulaDefinition.objects.filter(dataset=ds)
+            .filter(Q(user=request.user) | Q(shared=True))
+            .select_related("user")
+            .order_by("normalized_name")
+        )
         return JsonResponse(
             {
                 "items": [
                     {
                         "id": str(item.pk),
                         "definition": item.definition,
+                        "revision": item.revision,
+                        "shared": item.shared,
+                        "owned": item.user_id == request.user.pk,
+                        "owner": item.user.username,
+                        "history": item.history,
                         "updated_at": item.updated_at.isoformat(),
                     }
                     for item in items
@@ -204,28 +216,74 @@ def formula_definitions(request, dataset_id):
             }
         )
 
-    definition = validate_column(body(request).get("definition"))
+    data = body(request)
+    definition = validate_column(data.get("definition"))
+    shared = data.get("shared", False)
+    if type(shared) is not bool:
+        raise APIError("共享选项无效")
     try:
         ensure_available_metrics(ds, definition)
     except ValueError as exc:
         raise APIError(str(exc)) from exc
     normalized_name = definition["name"].strip().casefold()
-    existing = FormulaDefinition.objects.filter(
-        dataset=ds, user=request.user, normalized_name=normalized_name
-    ).first()
-    if not existing and FormulaDefinition.objects.filter(dataset=ds, user=request.user).count() >= 50:
-        raise APIError("每个数据集最多保存 50 个公式定义")
-    item, created = FormulaDefinition.objects.update_or_create(
-        dataset=ds,
-        user=request.user,
-        normalized_name=normalized_name,
-        defaults={"definition": definition},
-    )
-    audit(request, "formula_definition.save", item.pk, {"dataset": str(ds.pk), "name": definition["name"]})
+    requested_revision = data.get("revision")
+    with transaction.atomic():
+        Dataset.objects.select_for_update().get(pk=ds.pk)
+        existing = (
+            FormulaDefinition.objects.select_for_update()
+            .filter(dataset=ds, user=request.user, normalized_name=normalized_name)
+            .first()
+        )
+        if existing:
+            if requested_revision is not None and (
+                type(requested_revision) is not int or requested_revision != existing.revision
+            ):
+                raise APIError("公式定义已在其他窗口更新，请重新载入", 409)
+            # ponytail: retain 20 revisions; use a separate history table if long-term retention is required.
+            existing.history = [
+                *existing.history,
+                {
+                    "revision": existing.revision,
+                    "definition": existing.definition,
+                    "updated_at": existing.updated_at.isoformat(),
+                },
+            ][-20:]
+            existing.definition = definition
+            existing.shared = shared if "shared" in data else existing.shared
+            existing.revision += 1
+            existing.save(update_fields=["definition", "revision", "shared", "history", "updated_at"])
+            item, created = existing, False
+        else:
+            if FormulaDefinition.objects.filter(dataset=ds, user=request.user).count() >= 50:
+                raise APIError("每个数据集最多保存 50 个公式定义")
+            item = FormulaDefinition.objects.create(
+                dataset=ds,
+                user=request.user,
+                normalized_name=normalized_name,
+                definition=definition,
+                shared=shared,
+            )
+            created = True
+        audit(
+            request,
+            "formula_definition.save",
+            item.pk,
+            {
+                "dataset": str(ds.pk),
+                "name": definition["name"],
+                "shared": item.shared,
+                "revision": item.revision,
+            },
+        )
     return JsonResponse(
         {
             "id": str(item.pk),
             "definition": item.definition,
+            "revision": item.revision,
+            "shared": item.shared,
+            "owned": True,
+            "owner": request.user.username,
+            "history": item.history,
             "updated_at": item.updated_at.isoformat(),
         },
         status=201 if created else 200,
@@ -241,8 +299,10 @@ def formula_definition_delete(request, dataset_id, definition_id):
     if not item:
         raise APIError("公式定义不存在", 404)
     name = item.definition.get("name", "")
-    audit(request, "formula_definition.delete", item.pk, {"dataset": str(ds.pk), "name": name})
-    item.delete()
+    with transaction.atomic():
+        item = FormulaDefinition.objects.select_for_update().get(pk=item.pk)
+        audit(request, "formula_definition.delete", item.pk, {"dataset": str(ds.pk), "name": name})
+        item.delete()
     return JsonResponse({"deleted": True})
 
 
@@ -279,6 +339,8 @@ def formula_export_create(request, dataset_id):
 
 
 def _owned_job(request, dataset_id, export_id):
+    if not request.user.is_active or request.member.role not in ("admin", "analyst"):
+        raise APIError("没有此导出任务的访问权限", 403)
     job = FormulaExport.objects.filter(
         pk=export_id,
         dataset_id=dataset_id,

finance/management/commands/cleanup_formula_exports.py

@@ -5,8 +5,10 @@ from pathlib import Path
 from django.conf import settings
 from django.core.management.base import BaseCommand
 from django.db import transaction
+from django.db.models import Q
 from django.utils import timezone
 
+from finance.exporting import _safe_unlink_export
 from finance.models import FormulaExport
 
 
@@ -29,22 +31,30 @@ class Command(BaseCommand):
         export_root = Path(settings.MEDIA_ROOT) / "formula-exports"
         if export_root.is_symlink():
             raise ValueError("公式导出目录不能是符号链接")
-        root = export_root.resolve()
+        root = export_root.absolute()
         now = timezone.now()
         jobs = files = 0
 
-        for job in FormulaExport.objects.filter(status="succeeded", expires_at__lte=now).iterator():
+        jobs_qs = FormulaExport.objects.filter(
+            Q(status="succeeded", expires_at__lte=now) | Q(status="failed", path__gt="")
+        ).iterator()
+        for job in jobs_qs:
             path = Path(job.path) if job.path else None
-            resolved = path.resolve() if path and path.is_absolute() and not path.is_symlink() else None
-            in_root = bool(resolved and resolved.is_relative_to(root))
             try:
                 with transaction.atomic():
-                    if in_root and resolved.is_file():
-                        resolved.unlink()
+                    deleted = bool(path and _safe_unlink_export(path, root))
+                    if job.status == "succeeded":
+                        if deleted or not path or not path.is_absolute() or not path.is_relative_to(root):
+                            if deleted:
+                                files += 1
+                            job.status, job.path = "expired", ""
+                            job.save(update_fields=["status", "path"])
+                            jobs += 1
+                    elif deleted:
                         files += 1
-                    job.status, job.path = "expired", ""
-                    job.save(update_fields=["status", "path"])
-                    jobs += 1
+                        job.path = ""
+                        job.save(update_fields=["path"])
+                        jobs += 1
             except OSError as exc:
                 self.stderr.write(f"Could not remove expired export {job.pk}: {exc}")
 

finance/management/commands/import_worker.py

@@ -24,7 +24,7 @@ class Command(BaseCommand):
                     self.stdout.write("Another worker owns the database lock")
                     return
         try:
-            self.run_jobs(options, postgres)
+            self.run_jobs(options, True)
         finally:
             if postgres:
                 with connection.cursor() as cursor:

finance/migrations/0005_aiconfig.py

@@ -0,0 +1,43 @@
+# Generated by Django 5.2.17 on 2026-09-26 13:56
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("finance", "0004_formuladefinition"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="AIConfig",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True, primary_key=True, serialize=False, verbose_name="ID"
+                    ),
+                ),
+                ("enabled", models.BooleanField(default=False)),
+                (
+                    "provider",
+                    models.CharField(
+                        choices=[("openai", "OpenAI"), ("local", "本地 OpenAI 兼容服务")],
+                        default="local",
+                        max_length=16,
+                    ),
+                ),
+                ("base_url", models.CharField(blank=True, max_length=500)),
+                ("api_key", models.CharField(blank=True, max_length=500)),
+                ("model", models.CharField(blank=True, max_length=200)),
+                ("updated_at", models.DateTimeField(auto_now=True)),
+                (
+                    "organization",
+                    models.OneToOneField(
+                        on_delete=django.db.models.deletion.CASCADE, to="finance.organization"
+                    ),
+                ),
+            ],
+        ),
+    ]

finance/migrations/0006_formuladefinition_revision.py

@@ -0,0 +1,15 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("finance", "0005_aiconfig"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="formuladefinition",
+            name="revision",
+            field=models.PositiveIntegerField(default=1),
+        ),
+    ]

finance/migrations/0007_alter_dataset_file.py

@@ -0,0 +1,15 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("finance", "0006_formuladefinition_revision"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="dataset",
+            name="file",
+            field=models.FileField(max_length=500, upload_to="sources/%Y/%m"),
+        ),
+    ]

finance/migrations/0008_formuladefinition_history_formuladefinition_shared.py

@@ -0,0 +1,22 @@
+# Generated by Django 5.2.17 on 2026-10-07 23:50
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("finance", "0007_alter_dataset_file"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="formuladefinition",
+            name="history",
+            field=models.JSONField(default=list),
+        ),
+        migrations.AddField(
+            model_name="formuladefinition",
+            name="shared",
+            field=models.BooleanField(default=False),
+        ),
+    ]

finance/models.py

@@ -22,7 +22,7 @@ class Dataset(models.Model):
     organization = models.ForeignKey(Organization, on_delete=models.PROTECT)
     created_by = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.PROTECT)
     name = models.CharField(max_length=200)
-    file = models.FileField(upload_to="sources/%Y/%m")
+    file = models.FileField(upload_to="sources/%Y/%m", max_length=500)
     sha256 = models.CharField(max_length=64)
     status = models.CharField(max_length=16, default="mapping")
     profile = models.JSONField(default=dict)
@@ -92,6 +92,18 @@ class Audit(models.Model):
     created_at = models.DateTimeField(auto_now_add=True)
 
 
+class AIConfig(models.Model):
+    organization = models.OneToOneField(Organization, on_delete=models.CASCADE)
+    enabled = models.BooleanField(default=False)
+    provider = models.CharField(
+        max_length=16, choices=[("openai", "OpenAI"), ("local", "本地 OpenAI 兼容服务")], default="local"
+    )
+    base_url = models.CharField(max_length=500, blank=True)
+    api_key = models.CharField(max_length=500, blank=True)
+    model = models.CharField(max_length=200, blank=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+
 class Throttle(models.Model):
     key = models.CharField(max_length=64, primary_key=True)
     count = models.PositiveIntegerField(default=0)
@@ -121,6 +133,9 @@ class FormulaDefinition(models.Model):
     user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
     normalized_name = models.CharField(max_length=320)
     definition = models.JSONField()
+    revision = models.PositiveIntegerField(default=1)
+    shared = models.BooleanField(default=False)
+    history = models.JSONField(default=list)
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
 

finance/views.py

@@ -24,7 +24,7 @@ from openpyxl.cell import WriteOnlyCell
 
 from .analysis import METRICS, analyze, context, default_preferences, dimensions, scoped_facts
 from .importing import file_digest, profile_file, suggest_mapping, validate_mapping
-from .models import Audit, Dataset, Investigation, Membership, Preference, Throttle
+from .models import AIConfig, Audit, Dataset, Investigation, Membership, Preference, Throttle
 
 
 class APIError(Exception):
@@ -130,10 +130,20 @@ def serialize_dataset(ds, detailed=False, restricted=False, raw_access=True):
 
 @endpoint(public=True)
 def session(request):
+    ai_enabled = settings.AI_ENABLED and bool(settings.OPENAI_API_KEY and settings.OPENAI_MODEL)
+    if request.user.is_authenticated:
+        try:
+            cfg = AIConfig.objects.filter(organization=request.user.membership.organization).first()
+            if cfg:
+                ai_enabled = (
+                    cfg.enabled and bool(cfg.model) and (cfg.provider == "local" or bool(cfg.api_key))
+                )
+        except Membership.DoesNotExist:
+            pass
     data = {
         "csrf": get_token(request),
         "user": None,
-        "ai_enabled": settings.AI_ENABLED and bool(settings.OPENAI_API_KEY and settings.OPENAI_MODEL),
+        "ai_enabled": ai_enabled,
     }
     if request.user.is_authenticated:
         try:
@@ -287,6 +297,14 @@ def query(request, dataset_id):
     return JsonResponse(analyze(ds, request.member, body(request), pref))
 
 
+def amount_text(value):
+    """金额展示文本：去掉定点数存储尺度产生的多余尾零（如 10.000000000000000000000000 → 10）。"""
+    if value is None:
+        return None
+    text = format(value.normalize(), "f")
+    return "0" if text == "-0" else text
+
+
 @endpoint(("POST",))
 def evidence(request, dataset_id):
     ds = dataset(request, dataset_id, True)
@@ -304,6 +322,9 @@ def evidence(request, dataset_id):
             "source_row", "period", "dimensions", "revenue", "cost", "gross", "raw"
         )
     )
+    for row in rows:
+        for field in ("revenue", "cost", "gross"):
+            row[field] = amount_text(row[field])
     # Raw patient/customer identifiers require an explicit administrator role.
     if request.member.role != "admin":
         for row in rows:
@@ -402,9 +423,9 @@ def export(request, dataset_id):
                     row.source_row,
                     row.period,
                     *[row.dimensions.get(d["key"], "") for d in dims],
-                    row.revenue,
-                    row.cost,
-                    row.gross,
+                    amount_text(row.revenue),
+                    amount_text(row.cost),
+                    amount_text(row.gross),
                 ]
             )
         if workbook:

frontend/src/App.tsx

@@ -13,6 +13,7 @@ import {
   Bell,
   BookOpen,
   ChevronRight,
+  Cpu,
   Database,
   Download,
   Eye,
@@ -33,6 +34,7 @@ import { api, download, setCsrf } from "./api";
 import { Chart } from "./Chart";
 import {
   AdminDialog,
+  AIConfigDialog,
   FormulaExportDialog,
   Copilot,
   EvidenceDialog,
@@ -43,6 +45,7 @@ import {
 import {
   format,
   labels,
+  roleLabels,
   type Analysis,
   type Context,
   type Dataset,
@@ -83,6 +86,7 @@ export function App() {
       | "dictionary"
       | "users"
       | "audit"
+      | "ai"
       | null
       | "formula"
     >(null),
@@ -305,6 +309,23 @@ export function App() {
     setPath([]);
     setModal(null);
   }
+  // 全部分组都为空的指标列（如数据集没有成本/ROI）不展示，避免占位挤压可用列。
+  const metricKeys = useMemo(() => {
+    const candidates = [
+      ...new Set<Metric>([
+        "revenue",
+        "gross",
+        "cost",
+        "roi",
+        "customers",
+        ctx?.metric || "revenue",
+      ]),
+    ];
+    const available = candidates.filter(
+      (m) => m === "revenue" || (result?.rows || []).some((r) => r.values[m]?.current != null),
+    );
+    return available.length ? available : (["revenue"] as Metric[]);
+  }, [result, ctx]);
   const columns = useMemo<ColDef<Row>[]>(
     () => [
       {
@@ -324,23 +345,14 @@ export function App() {
           </button>
         ),
       },
-      ...[
-        ...new Set<Metric>([
-          "revenue",
-          "gross",
-          "cost",
-          "roi",
-          "customers",
-          ctx?.metric || "revenue",
-        ]),
-      ].map((metric) => ({
+      ...metricKeys.map((metric) => ({
         colId: metric,
         headerName: labels[metric],
         minWidth: 130,
         valueGetter: (p: { data?: Row }) =>
-          p.data?.values[metric].current == null
+          p.data?.values[metric]?.current == null
             ? null
-            : Number(p.data.values[metric].current),
+            : Number(p.data.values[metric]?.current),
         valueFormatter: (p: { value: unknown }) =>
           format(p.value as number, metric),
         cellClass: metric === ctx?.metric ? "metric-column" : "",
@@ -393,24 +405,34 @@ export function App() {
         ),
       },
     ],
-    [ds, ctx, path],
+    [ds, ctx, path, metricKeys],
   );
   const rows = (result?.rows || []).filter(
     (r) => (screen !== "anomalies" || r.anomaly) && r.label.includes(search),
   );
   const metric = ctx?.metric || "revenue";
+  const compactAxis = (value: number) => {
+    const abs = Math.abs(value);
+    if (abs >= 1e8) return `${value / 1e8}亿`;
+    if (abs >= 1e4) return `${value / 1e4}万`;
+    return String(value);
+  };
   const trend = useMemo(
     () => ({
       color: ["#197568", "#5794c9"],
       tooltip: { trigger: "axis" },
       legend: { bottom: 0 },
-      grid: { top: 25, left: 65, right: 25, bottom: 65 },
+      grid: { top: 25, left: 85, right: 25, bottom: 65 },
       xAxis: {
         type: "category",
         data: result?.trend.map((r) => r.period),
-        axisLabel: { color: "#73827b" },
+        axisLabel: { color: "#73827b", hideOverlap: true },
+      },
+      yAxis: {
+        type: "value",
+        splitLine: { lineStyle: { color: "#ecf0ee" } },
+        axisLabel: { hideOverlap: true },
       },
-      yAxis: { type: "value", splitLine: { lineStyle: { color: "#ecf0ee" } } },
       series: [
         {
           name: "实际收入",
@@ -440,7 +462,11 @@ export function App() {
     () => ({
       tooltip: { trigger: "axis" },
       grid: { top: 15, left: 95, right: 30, bottom: 30 },
-      xAxis: { type: "value", splitLine: { lineStyle: { color: "#ecf0ee" } } },
+      xAxis: {
+        type: "value",
+        splitLine: { lineStyle: { color: "#ecf0ee" } },
+        axisLabel: { hideOverlap: true, formatter: compactAxis },
+      },
       yAxis: {
         type: "category",
         inverse: true,
@@ -543,6 +569,10 @@ export function App() {
                 <ShieldCheck />
                 操作审计
               </button>
+              <button onClick={() => setModal("ai")}>
+                <Cpu />
+                AI 模型
+              </button>
             </>
           )}
         </nav>
@@ -871,6 +901,8 @@ export function App() {
                             missing_gross: "毛利缺失",
                             missing_customer: "客户标识缺失",
                             blank_rows: "空白行",
+                            g_l_mismatch: "应收金额两列不一致",
+                            i_n_mismatch: "实收与实际收入不一致",
                           } as Record<string, string>
                         )[k] || k}
                         <strong>{v.toLocaleString()}</strong>
@@ -1023,16 +1055,11 @@ export function App() {
                                       )?.name
                                     }
                                   </th>
-                                  {(
-                                    [
-                                      "revenue",
-                                      "gross",
-                                      "cost",
-                                      "roi",
-                                    ] as Metric[]
-                                  ).map((m) => (
-                                    <th key={m}>{labels[m]}</th>
-                                  ))}
+                                  {metricKeys
+                                    .filter((m) => m !== "customers")
+                                    .map((m) => (
+                                      <th key={m}>{labels[m]}</th>
+                                    ))}
                                   <th>状态</th>
                                 </tr>
                               </thead>
@@ -1040,15 +1067,10 @@ export function App() {
                                 {result.rows.slice(0, 12).map((r) => (
                                   <tr key={r.label}>
                                     <th>{r.label}</th>
-                                    {(
-                                      [
-                                        "revenue",
-                                        "gross",
-                                        "cost",
-                                        "roi",
-                                      ] as Metric[]
-                                    ).map((m) => {
-                                      const v = r.values[m].change;
+                                    {metricKeys
+                                      .filter((m) => m !== "customers")
+                                      .map((m) => {
+                                        const v = r.values[m]?.change;
                                       return (
                                         <td key={m}>
                                           <button
@@ -1062,7 +1084,7 @@ export function App() {
                                                   : "heat-positive"
                                             }
                                             onClick={() => {
-                                              setCtx({ ...ctx, metric: m });
+                                              setCtx({ ...ctx, metric: m as Metric });
                                               setSelected(r);
                                               setScreen("anomalies");
                                             }}
@@ -1220,48 +1242,53 @@ export function App() {
                         </div>
                       </div>
                       <div className="grid-layout">
-                        <div className="grid">
-                          <AgGridReact<Row>
-                            theme={gridTheme}
-                            rowData={rows}
-                            columnDefs={columns}
-                            defaultColDef={{
-                              sortable: true,
-                              filter: true,
-                              resizable: true,
-                            }}
-                            pagination
-                            paginationPageSize={20}
-                            paginationPageSizeSelector={[20, 50, 100]}
-                            getRowId={(p) => p.data.label}
-                            onRowClicked={(e) => setSelected(e.data)}
-                            localeText={{
-                              noRowsToShow: "没有符合条件的分组",
-                              page: "页",
-                              of: "/",
-                              to: "至",
-                              more: "更多",
-                              nextPage: "下一页",
-                              previousPage: "上一页",
-                              firstPage: "首页",
-                              lastPage: "末页",
-                              pageSizeSelectorLabel: "每页",
-                            }}
-                            {...(enterprise
-                              ? {
-                                  cellSelection: true,
-                                  sideBar: "columns",
-                                  statusBar: {
-                                    statusPanels: [
-                                      {
-                                        statusPanel: "agTotalRowCountComponent",
-                                      },
-                                    ],
-                                  },
-                                }
-                              : {})}
-                          />
-                        </div>
+                        {rows.length ? (
+                          <div className="grid">
+                            <AgGridReact<Row>
+                              theme={gridTheme}
+                              rowData={rows}
+                              columnDefs={columns}
+                              defaultColDef={{
+                                sortable: true,
+                                filter: true,
+                                resizable: true,
+                              }}
+                              pagination
+                              paginationPageSize={20}
+                              paginationPageSizeSelector={[20, 50, 100]}
+                              getRowId={(p) => p.data.label}
+                              onRowClicked={(e) => setSelected(e.data)}
+                              localeText={{
+                                page: "页",
+                                of: "/",
+                                to: "至",
+                                more: "更多",
+                                nextPage: "下一页",
+                                previousPage: "上一页",
+                                firstPage: "首页",
+                                lastPage: "末页",
+                                pageSizeSelectorLabel: "每页",
+                              }}
+                              {...(enterprise
+                                ? {
+                                    cellSelection: true,
+                                    sideBar: "columns",
+                                    statusBar: {
+                                      statusPanels: [
+                                        {
+                                          statusPanel: "agTotalRowCountComponent",
+                                        },
+                                      ],
+                                    },
+                                  }
+                                : {})}
+                            />
+                          </div>
+                        ) : (
+                          <p role="status" className="grid-empty">
+                            没有符合条件的分组
+                          </p>
+                        )}
                         {selected && (
                           <aside className="explanation">
                             <div className="section-heading">
@@ -1465,7 +1492,7 @@ export function App() {
                   <tr key={c.index}>
                     <td>{c.name}</td>
                     <td>{c.description}</td>
-                    <td>{c.role}</td>
+                    <td>{roleLabels[c.role] || c.role}</td>
                   </tr>
                 ))}
               </tbody>
@@ -1476,6 +1503,7 @@ export function App() {
       {(modal === "users" || modal === "audit") && (
         <AdminDialog mode={modal} onClose={() => setModal(null)} />
       )}
+      {modal === "ai" && <AIConfigDialog onClose={() => setModal(null)} />}
     </div>
   );
 }

frontend/src/dialogs.tsx

@@ -3,7 +3,12 @@ import { ChevronLeft, ChevronRight, Download, Save, Trash2, X } from "lucide-rea
 import { api } from "./api";
 import {
   labels,
+  roleLabels,
+  type AIConfig,
   type Context,
+  type FormulaColumn,
+  type FormulaExpression,
+  type SavedFormulaDefinition,
   type Dataset,
   type Metric,
   type Preferences,
@@ -12,21 +17,6 @@ import {
 
 type User = NonNullable<Session["user"]>;
 
-type FormulaExpression =
-  | { metric: Metric }
-  | { number: number }
-  | {
-      operator: "add" | "subtract" | "multiply" | "divide";
-      left: FormulaExpression;
-      right: FormulaExpression;
-    };
-
-type SavedFormulaDefinition = {
-  id: string;
-  definition: Record<string, unknown>;
-  updated_at: string;
-};
-
 function describeExpression(expression: FormulaExpression): string {
   if ("metric" in expression) return labels[expression.metric];
   if ("number" in expression) return String(expression.number);
@@ -164,7 +154,9 @@ export function ImportDialog({
                         "dimension",
                         "ignore",
                       ].map((r) => (
-                        <option key={r}>{r}</option>
+                        <option key={r} value={r}>
+                          {roleLabels[r] || r}
+                        </option>
                       ))}
                     </select>
                   </td>
@@ -366,6 +358,7 @@ export function EvidenceDialog({
     };
   }, [ds.id, ctx, side, page]);
   function selectSide(value: "current" | "baseline") {
+    if (value === side && page === 0) return;
     setResult(undefined);
     setPage(0);
     setSide(value);
@@ -405,7 +398,7 @@ export function EvidenceDialog({
           </p>
         )}
         <div className="table-scroll">
-          <table>
+          <table className="evidence-table">
             <thead>
               <tr>
                 <th>来源行</th>
@@ -471,6 +464,153 @@ export function EvidenceDialog({
   );
 }
 
+export function AIConfigDialog({ onClose }: { onClose: () => void }) {
+  const [value, setValue] = useState<AIConfig>({
+      enabled: false,
+      provider: "local",
+      base_url: "",
+      model: "",
+      api_key_set: false,
+      updated_at: null,
+    }),
+    [key, setKey] = useState(""),
+    [models, setModels] = useState<string[]>([]),
+    [error, setError] = useState(""),
+    [busy, setBusy] = useState(false),
+    [listing, setListing] = useState(false);
+  useEffect(() => {
+    api<AIConfig>("/ai-config")
+      .then((r) => setValue(r))
+      .catch((e) => setError((e as Error).message));
+  }, []);
+  async function fetchModels() {
+    setListing(true);
+    setError("");
+    try {
+      const r = await api<{ items: string[] }>("/ai-models");
+      setModels(r.items);
+      if (!r.items.length) setError("该服务没有返回可用模型");
+    } catch (e) {
+      setError((e as Error).message);
+    } finally {
+      setListing(false);
+    }
+  }
+  async function save() {
+    setBusy(true);
+    setError("");
+    try {
+      await api("/ai-config", "PUT", {
+        enabled: value.enabled,
+        provider: value.provider,
+        base_url: value.base_url,
+        model: value.model,
+        api_key: key,
+      });
+      setKey("");
+      setValue((v) => ({ ...v, api_key_set: v.api_key_set || Boolean(key) }));
+      if (value.base_url) await fetchModels();
+    } catch (e) {
+      setError((e as Error).message);
+    } finally {
+      setBusy(false);
+    }
+  }
+  return (
+    <Modal title="AI 模型配置" onClose={onClose} wide>
+      <div className="dialog-body">
+        <p className="muted">
+          配置财务分析助手使用的模型服务。数据库配置优先；未配置时回退到部署环境变量。
+        </p>
+        <label className="check">
+          <input
+            type="checkbox"
+            checked={value.enabled}
+            onChange={(e) => setValue({ ...value, enabled: e.target.checked })}
+          />
+          启用 AI 模型理解问题
+        </label>
+        <label>
+          服务商
+          <select
+            value={value.provider}
+            onChange={(e) =>
+              setValue({
+                ...value,
+                provider: e.target.value as AIConfig["provider"],
+              })
+            }
+          >
+            <option value="openai">OpenAI</option>
+            <option value="local">
+              本地 OpenAI 兼容服务（Ollama / LM Studio / vLLM）
+            </option>
+          </select>
+        </label>
+        <label>
+          Base URL
+          <input
+            value={value.base_url}
+            placeholder={
+              value.provider === "local"
+                ? "http://127.0.0.1:11434/v1"
+                : "https://api.openai.com/v1"
+            }
+            onChange={(e) => setValue({ ...value, base_url: e.target.value })}
+          />
+        </label>
+        <label>
+          API Key
+          <input
+            type="password"
+            value={key}
+            placeholder={
+              value.api_key_set ? "已配置，留空保持不变" : "本地服务通常可留空"
+            }
+            onChange={(e) => setKey(e.target.value)}
+          />
+        </label>
+        <label>
+          模型
+          <input
+            list="ai-model-list"
+            value={value.model}
+            placeholder="模型名，如 qwen2.5:7b"
+            onChange={(e) => setValue({ ...value, model: e.target.value })}
+          />
+          <datalist id="ai-model-list">
+            {models.map((m) => (
+              <option key={m} value={m} />
+            ))}
+          </datalist>
+        </label>
+        <footer>
+          <button onClick={onClose}>取消</button>
+          <button
+            type="button"
+            disabled={listing || busy}
+            onClick={fetchModels}
+          >
+            {listing ? "获取中…" : "获取可用模型"}
+          </button>
+          <button className="primary" disabled={busy} onClick={save}>
+            {busy ? "保存中…" : "保存配置"}
+          </button>
+        </footer>
+        {error && (
+          <p role="alert" className="error">
+            {error}
+          </p>
+        )}
+        <p className="muted">
+          只向模型服务发送问题与维度/当前筛选，原始数据行不出服务器；密钥仅保存在后端，
+          配置修改会记入操作审计。
+        </p>
+      </div>
+    </Modal>
+  );
+}
+
 export function Copilot({
   ds,
   ctx,
@@ -550,7 +690,7 @@ export function Copilot({
                 checked={useModel}
                 onChange={(e) => setUseModel(e.target.checked)}
               />
-              使用外部 AI 理解问题
+              使用已配置的 AI 模型理解问题
             </label>
             {useModel && (
               <label className="check">
@@ -675,7 +815,7 @@ export function FormulaExportDialog({
       { role: "user" | "assistant"; content: string }[]
     >([]),
     [draft, setDraft] = useState(""),
-    [column, setColumn] = useState<Record<string, unknown> | null>(null),
+    [column, setColumn] = useState<FormulaColumn | null>(null),
     [questions, setQuestions] = useState<string[]>([]),
     [task, setTask] = useState<{
       id: string;
@@ -684,9 +824,30 @@ export function FormulaExportDialog({
     }>(),
     [definitions, setDefinitions] = useState<SavedFormulaDefinition[]>([]),
     [selectedDefinition, setSelectedDefinition] = useState(""),
+    [shared, setShared] = useState(false),
+    [loadedDefinition, setLoadedDefinition] = useState<FormulaColumn | null>(null),
     [consent, setConsent] = useState(false),
     [busy, setBusy] = useState(false),
     [error, setError] = useState("");
+  const draftKey = `traceiq.formula-draft.${ds.id}`;
+  const [draftRestored, setDraftRestored] = useState(false);
+  useEffect(() => {
+    try {
+      const stored = sessionStorage.getItem(draftKey);
+      if (stored) {
+        const saved = JSON.parse(stored);
+        setDraft(saved.draft || "");
+        setMessages(saved.messages || []);
+        setColumn(saved.column || null);
+      }
+    } catch {
+      sessionStorage.removeItem(draftKey);
+    }
+    setDraftRestored(true);
+  }, [draftKey]);
+  useEffect(() => {
+    if (draftRestored) sessionStorage.setItem(draftKey, JSON.stringify({ draft, messages, column }));
+  }, [draftKey, draftRestored, draft, messages, column]);
   useEffect(() => {
     api<{ items: SavedFormulaDefinition[] }>(
       `/datasets/${ds.id}/formula-definitions`,
@@ -713,7 +874,10 @@ export function FormulaExportDialog({
   async function send() {
     const text = draft.trim();
     if (!text || !consent || userTurns >= 6) return;
-    const next = [...messages, { role: "user" as const, content: text }];
+    const content = loadedDefinition
+      ? `已载入的原始定义：${JSON.stringify(loadedDefinition)}\n本次补充：${text}`
+      : text;
+    const next = [...messages, { role: "user" as const, content }];
     setBusy(true);
     setError("");
     setQuestions([]);
@@ -722,7 +886,7 @@ export function FormulaExportDialog({
       const result = await api<{
         complete: boolean;
         questions: string[];
-        column: Record<string, unknown> | null;
+        column: FormulaColumn | null;
       }>(`/datasets/${ds.id}/formula-design`, "POST", {
         context: ctx,
         messages: next,
@@ -739,6 +903,7 @@ export function FormulaExportDialog({
       ]);
       setQuestions(result.questions);
       setColumn(result.column);
+      setLoadedDefinition(null);
       setDraft("");
     } catch (e) {
       setError((e as Error).message);
@@ -747,7 +912,7 @@ export function FormulaExportDialog({
     }
   }
   async function create() {
-    if (!column) return;
+    if (!column && !ctx.custom_columns?.length) return;
     setBusy(true);
     setError("");
     try {
@@ -755,7 +920,12 @@ export function FormulaExportDialog({
         await api<{ id: string; status: string }>(
           `/datasets/${ds.id}/formula-exports`,
           "POST",
-          { ...ctx, custom_columns: [column] },
+          {
+            ...ctx,
+            custom_columns: column
+              ? [...(ctx.custom_columns || []).filter((item) => item.name !== column.name), column]
+              : ctx.custom_columns,
+          },
         ),
       );
     } catch (e) {
@@ -772,11 +942,24 @@ export function FormulaExportDialog({
       const saved = await api<SavedFormulaDefinition>(
         `/datasets/${ds.id}/formula-definitions`,
         "POST",
-        { definition: column },
+        {
+          definition: column,
+          shared,
+          revision: definitions.find(
+            (item) =>
+              (item.id === selectedDefinition && item.owned) ||
+              (item.owned &&
+              String(item.definition.name).trim().toLowerCase() ===
+                String(column.name).trim().toLowerCase()),
+          )?.revision,
+        },
       );
       setDefinitions((items) =>
         [...items.filter((item) => item.id !== saved.id), saved].sort((a, b) =>
-          String(a.definition.name).localeCompare(String(b.definition.name), "zh-CN"),
+          String(a.definition.name).localeCompare(
+            String(b.definition.name),
+            "zh-CN",
+          ),
         ),
       );
       setSelectedDefinition(saved.id);
@@ -789,8 +972,14 @@ export function FormulaExportDialog({
   function loadDefinition(id: string) {
     setSelectedDefinition(id);
     const saved = definitions.find((item) => item.id === id);
-    if (!saved) return;
+    if (!saved) {
+      setLoadedDefinition(null);
+      setColumn(null);
+      return;
+    }
     setColumn(saved.definition);
+    setShared(saved.owned && saved.shared);
+    setLoadedDefinition(saved.definition);
     setMessages([]);
     setQuestions([]);
     setDraft("");
@@ -808,6 +997,7 @@ export function FormulaExportDialog({
         items.filter((item) => item.id !== selectedDefinition),
       );
       setSelectedDefinition("");
+      setLoadedDefinition(null);
       setColumn(null);
     } catch (e) {
       setError((e as Error).message);
@@ -817,15 +1007,10 @@ export function FormulaExportDialog({
   }
   async function getFile() {
     try {
-      const blob = await api<Blob>(
-          `/datasets/${ds.id}/formula-exports/${task!.id}/download`,
-        ),
-        url = URL.createObjectURL(blob),
-        link = document.createElement("a");
-      link.href = url;
+      const link = document.createElement("a");
+      link.href = `/api/datasets/${ds.id}/formula-exports/${task!.id}/download`;
       link.download = "traceiq-formula-analysis.xlsx";
       link.click();
-      window.setTimeout(() => URL.revokeObjectURL(url), 1000);
     } catch (e) {
       setError((e as Error).message);
     }
@@ -834,6 +1019,11 @@ export function FormulaExportDialog({
     <Modal title="生成公式工作簿" onClose={onClose} wide>
       <div className="dialog-body">
         <p>描述新列含义、计算方式、适用范围，以及缺失值或零分母处理方式。</p>
+        {!column && !task && !!ctx.custom_columns?.length && (
+          <button disabled={busy} onClick={create}>
+            按网页已选 {ctx.custom_columns.length} 列生成工作簿
+          </button>
+        )}
         {definitions.length > 0 && !task && (
           <div className="form-row">
             <label>
@@ -846,7 +1036,7 @@ export function FormulaExportDialog({
                 <option value="">选择定义</option>
                 {definitions.map((item) => (
                   <option key={item.id} value={item.id}>
-                    {String(item.definition.name)}
+                    {item.definition.name}{item.owned ? "" : `（${item.owner}共享）`}
                   </option>
                 ))}
               </select>
@@ -855,13 +1045,27 @@ export function FormulaExportDialog({
               className="icon"
               aria-label="删除所选定义"
               title="删除所选定义"
-              disabled={busy || !selectedDefinition}
+              disabled={busy || !definitions.find((item) => item.id === selectedDefinition)?.owned}
               onClick={deleteDefinition}
             >
               <Trash2 />
             </button>
           </div>
         )}
+        {definitions.find((item) => item.id === selectedDefinition)?.history.length ? (
+          <details>
+            <summary>版本历史（最近 20 次，可载入后另存）</summary>
+            {definitions.find((item) => item.id === selectedDefinition)!.history.map((version) => (
+              <button key={version.revision} disabled={busy} onClick={() => {
+                setColumn(version.definition);
+                setLoadedDefinition(version.definition);
+                setMessages([]);
+              }}>
+                载入版本 {version.revision} · {version.definition.meaning}
+              </button>
+            ))}
+          </details>
+        ) : null}
         <label className="check">
           <input
             type="checkbox"
@@ -904,6 +1108,10 @@ export function FormulaExportDialog({
                 </p>
                 <p>适用范围：{String(column.scope)}</p>
                 <p>缺失/零分母：{String(column.missing)}</p>
+                <label className="check">
+                  <input type="checkbox" checked={shared} onChange={(event) => setShared(event.target.checked)} />
+                  保存时共享给当前数据集的其他全范围分析账号
+                </label>
                 <button
                   disabled={busy || Boolean(draft.trim())}
                   onClick={saveDefinition}

frontend/src/style.css

@@ -484,7 +484,7 @@ a {
   display: flex;
   flex-direction: column;
   align-items: stretch;
-  padding: 20px 20px 16px;
+  padding: 18px 16px 14px;
   gap: 16px;
   background: white;
   min-width: 0;
@@ -510,12 +510,13 @@ a {
 }
 .kpi strong {
   text-align: left;
-  font-size: 24px;
+  font-size: 21px;
   line-height: 1.25;
   font-weight: 620;
   font-variant-numeric: tabular-nums;
-  white-space: normal;
-  overflow-wrap: anywhere;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
 }
 .kpi-bottom {
   display: flex;
@@ -1271,9 +1272,6 @@ details {
   .kpi {
     padding: 17px 13px;
   }
-  .kpi strong {
-    font-size: 21px;
-  }
   .chart-band {
     gap: 15px;
   }
@@ -1562,3 +1560,20 @@ details {
     scroll-behavior: auto !important;
   }
 }
+
+.grid-empty {
+  margin: 0;
+  padding: 40px 0;
+  text-align: center;
+  color: var(--muted, #5b6675);
+  border: 1px dashed var(--line);
+  border-radius: 6px;
+  width: 100%;
+}
+
+.evidence-table {
+  min-width: 960px;
+}
+.evidence-table th {
+  white-space: nowrap;
+}

frontend/src/types.ts

@@ -32,6 +32,20 @@ export interface Column {
   key: string;
   confidence: number;
 }
+export const roleLabels: Record<string, string> = {
+  period: "期间",
+  year: "年份",
+  month: "月份",
+  dimension: "维度",
+  customer: "客户标识",
+  quantity: "数量",
+  revenue: "实际收入",
+  cost: "成本",
+  gross: "毛利贡献",
+  list_amount: "应收金额",
+  discount: "折扣金额",
+  ignore: "未使用",
+};
 export interface Mapping {
   sheet: string;
   header: number;
@@ -84,6 +98,32 @@ export interface Context {
   filters: Record<string, string>;
   group: string;
   metric: Metric;
+  custom_columns?: FormulaColumn[];
+}
+export type FormulaExpression =
+  | { metric: Metric }
+  | { number: number }
+  | {
+      operator: "add" | "subtract" | "multiply" | "divide";
+      left: FormulaExpression;
+      right: FormulaExpression;
+    };
+export interface FormulaColumn {
+  name: string;
+  meaning: string;
+  scope: string;
+  missing: string;
+  expression: FormulaExpression;
+}
+export interface SavedFormulaDefinition {
+  id: string;
+  definition: FormulaColumn;
+  revision: number;
+  updated_at: string;
+  shared: boolean;
+  owned: boolean;
+  owner: string;
+  history: { revision: number; definition: FormulaColumn; updated_at: string }[];
 }
 export interface Value {
   current: Numeric;
@@ -107,15 +147,23 @@ export interface Analysis {
     current: string[];
     baseline: string[];
   };
-  summary: Record<Metric, Value>;
+  summary: Record<string, Value>;
   rows: Row[];
-  trend: ({ period: string } & Record<Metric, Numeric>)[];
+  trend: ({ period: string } & Record<string, Numeric>)[];
   row_count: number;
   anomaly_count: number;
   comparable: boolean;
   notice: string;
   version: string;
 }
+export interface AIConfig {
+  enabled: boolean;
+  provider: "openai" | "local";
+  base_url: string;
+  model: string;
+  api_key_set: boolean;
+  updated_at: string | null;
+}
 export interface Session {
   csrf: string;
   user: {

server/settings.py

@@ -93,6 +93,7 @@ MAX_UPLOAD_BYTES = int(os.environ.get("MAX_UPLOAD_BYTES", 64 * 1024 * 1024))
 MAX_IMPORT_ROWS = int(os.environ.get("MAX_IMPORT_ROWS", 1000000))
 OPENAI_API_KEY = os.environ.get("OPENAI_API_KEY", "")
 OPENAI_MODEL = os.environ.get("OPENAI_MODEL", "")
+OPENAI_BASE_URL = os.environ.get("OPENAI_BASE_URL", "https://api.openai.com/v1")
 AI_ENABLED = os.environ.get("AI_ENABLED", "0") == "1"
 LOGGING = {
     "version": 1,

server/urls.py

@@ -1,6 +1,7 @@
 from django.urls import path
 
 from finance import formula_views, views
+from finance.ai import ai_config, ai_models
 from finance.assistant import assistant
 
 urlpatterns = [
@@ -11,6 +12,8 @@ urlpatterns = [
     path("api/datasets", views.datasets),
     path("api/users", views.users),
     path("api/audit", views.audit_log),
+    path("api/ai-config", ai_config),
+    path("api/ai-models", ai_models),
     path("api/datasets/<uuid:dataset_id>", views.dataset_detail),
     path("api/datasets/<uuid:dataset_id>/mapping", views.mapping),
     path("api/datasets/<uuid:dataset_id>/query", views.query),

tests/e2e/formula-export.spec.ts

@@ -119,15 +119,36 @@ test("新增列：补充信息触发追问并重新确认后生成公式工作
   );
   await dialog.getByLabel("关闭", { exact: true }).click();
 
+  await page.getByRole("button", { name: "选择网页自定义列" }).click();
+  const columns = page.getByRole("dialog", { name: "选择网页自定义列" });
+  await columns.getByRole("checkbox", { name: /收入成本差/ }).check();
+  const customQuery = page.waitForResponse(
+    (response) =>
+      response.url().includes("/query") && response.request().method() === "POST",
+  );
+  await columns.getByRole("button", { name: "应用", exact: true }).click();
+  const customResult = await (await customQuery).json();
+  expect(customResult.summary.custom_0.current).toBe("1000");
+  expect(customResult.rows[0].values.custom_0.current).toBe("1000");
+
   await page.getByRole("button", { name: "生成公式工作簿" }).click();
   const reopened = page.getByRole("dialog", { name: "生成公式工作簿" });
   await reopened.getByLabel("已保存定义").selectOption({ label: "收入成本差" });
   await expect(reopened).toContainText("计算表达式：(实际收入 − 成本)");
+  await reopened.getByLabel("列计算描述").fill("把刚才公式乘以 100");
+  await expect(
+    reopened.getByRole("button", { name: "先发送补充内容" }),
+  ).toBeDisabled();
   await reopened
-    .getByRole("button", { name: "确认并生成公式工作簿" })
-    .click();
+    .getByLabel("同意将描述、指标定义和当前筛选范围发送至已配置的外部 AI 服务")
+    .check();
+  await reopened.getByRole("button", { name: "发送描述" }).click();
+  expect(sentMessages[0].content).toContain('"name":"收入成本差"');
+  expect(sentMessages[0].content).toContain('"operator":"subtract"');
+  expect(sentMessages[0].content).toContain("把刚才公式乘以 100");
+  await reopened.getByRole("button", { name: "确认并生成公式工作簿" }).click();
   await expect(reopened.getByRole("status")).toContainText("生成完成", {
     timeout: 30000,
   });
-  expect(designCalls).toBe(4);
+  expect(designCalls).toBe(5);
 });

tests/e2e/workspace.spec.ts

@@ -30,7 +30,9 @@ test("桌面：真实导入、异常、下钻、证据、设置、Copilot、导
   });
   await uploaded;
   const dialog = page.getByRole("dialog");
-  await expect(dialog.getByRole("heading", { name: "确认导入字段" })).toBeVisible();
+  await expect(
+    dialog.getByRole("heading", { name: "确认导入字段" }),
+  ).toBeVisible();
   await dialog.getByRole("button", { name: "确认并导入" }).click();
   await expect(
     page.getByRole("heading", { name: "集团经营总览", exact: true }),
@@ -85,7 +87,14 @@ test("桌面：真实导入、异常、下钻、证据、设置、Copilot、导
   await expect(evidenceDialog).toContainText("1 条");
   await expect(evidenceDialog).toContainText("2026-08");
   await expect(evidenceDialog).toContainText("CSV");
-  await evidenceDialog.getByRole("button", { name: "基期", exact: true }).click();
+  await evidenceDialog
+    .getByRole("button", { name: "本期", exact: true })
+    .click();
+  await expect(evidenceDialog).toContainText("2026-08");
+  await expect(evidenceDialog).not.toContainText("加载中");
+  await evidenceDialog
+    .getByRole("button", { name: "基期", exact: true })
+    .click();
   await expect(evidenceDialog).toContainText("2025-08");
   await evidenceDialog.getByLabel("关闭", { exact: true }).click();
   const evidenceOffsets: number[] = [];
@@ -111,10 +120,17 @@ test("桌面：真实导入、异常、下钻、证据、设置、Copilot、导
   });
   await page.getByLabel("查看医生A证据", { exact: true }).click();
   await expect(evidenceDialog).toContainText("第 1-50 条，共 51 条");
-  await evidenceDialog.getByRole("button", { name: "下一页", exact: true }).click();
+  await evidenceDialog
+    .getByRole("button", { name: "下一页", exact: true })
+    .click();
   await expect(evidenceDialog).toContainText("第 51-51 条，共 51 条");
   await expect(evidenceDialog).toContainText("2026-09");
   expect(evidenceOffsets).toEqual([0, 50]);
+  await evidenceDialog
+    .getByRole("button", { name: "基期", exact: true })
+    .click();
+  await expect(evidenceDialog).toContainText("第 1-50 条，共 51 条");
+  await expect(evidenceDialog).not.toContainText("2026-09");
   await evidenceDialog.getByLabel("关闭", { exact: true }).click();
   await page
     .getByRole("navigation", { name: "分析路径" })

tests/test_assistant_api.py

@@ -1,17 +1,182 @@
 import json
 from unittest.mock import patch
 
+import httpx
 import pytest
+from django.contrib.auth.models import User
 from django.test import Client
 
 from finance.assistant import model_intent
-from finance.models import Audit, FormulaDefinition, FormulaExport, Membership
+from finance.models import AIConfig, Audit, FormulaDefinition, FormulaExport, Membership
 
 pytestmark = pytest.mark.django_db
 
 
+def completed_response(intent=None):
+    class Response:
+        def raise_for_status(self):
+            return None
+
+        def json(self):
+            return {
+                "status": "completed",
+                "output": [
+                    {
+                        "content": [
+                            {
+                                "type": "output_text",
+                                "text": json.dumps(
+                                    intent
+                                    or {
+                                        "action": "overview",
+                                        "metric": "revenue",
+                                        "group": "department",
+                                        "filters": [{"key": "department", "value": "儿科"}],
+                                    }
+                                ),
+                            }
+                        ]
+                    }
+                ],
+            }
+
+    return Response()
+
+
+def test_ai_config_requires_full_admin_and_masks_key(workspace):
+    ds, member, client, _, _ = workspace
+    url = "/api/ai-config"
+
+    viewer = User.objects.create_user("ai-viewer", password="Finance-TestPassword991!")
+    Membership.objects.create(user=viewer, organization=ds.organization, role="viewer")
+    viewer_client = Client()
+    assert viewer_client.login(username="ai-viewer", password="Finance-TestPassword991!")
+    assert viewer_client.get(url).status_code == 403
+
+    member.departments = ["儿科"]
+    member.save(update_fields=["departments"])
+    scoped = Client()
+    assert scoped.login(username=member.user.username, password="Finance-TestPassword991!")
+    assert scoped.get(url).status_code == 403
+    member.departments = []
+    member.save(update_fields=["departments"])
+
+    assert client.get(url).json() == {
+        "enabled": False,
+        "provider": "local",
+        "base_url": "",
+        "model": "",
+        "api_key_set": False,
+        "updated_at": None,
+    }
+
+    invalid = [
+        {"enabled": True, "provider": "local", "base_url": "", "model": "qwen2.5:7b"},
+        {"enabled": True, "provider": "openai", "base_url": "", "model": "gpt-4o"},
+        {"enabled": True, "provider": "local", "base_url": "ftp://x", "model": "m"},
+        {"enabled": True, "provider": "local", "base_url": "http://x/v1", "model": ""},
+    ]
+    for payload in invalid:
+        assert client.put(url, data=payload, content_type="application/json").status_code == 400
+
+    saved = client.put(
+        url,
+        data={
+            "enabled": True,
+            "provider": "local",
+            "base_url": "http://127.0.0.1:11434/v1",
+            "api_key": "ollama-secret",
+            "model": "qwen2.5:7b",
+        },
+        content_type="application/json",
+    )
+    assert saved.status_code == 200
+    shown = client.get(url).json()
+    assert shown["api_key_set"] is True
+    assert shown["enabled"] is True and shown["provider"] == "local"
+    assert "ollama-secret" not in json.dumps(shown)
+    assert client.get("/api/session").json()["ai_enabled"] is True
+    assert Audit.objects.filter(action="ai_config.update").exists()
+
+
+def test_ai_models_lists_local_models(workspace):
+    ds, _, client, _, _ = workspace
+    client.put(
+        "/api/ai-config",
+        data={
+            "enabled": False,
+            "provider": "local",
+            "base_url": "http://127.0.0.1:11434/v1",
+            "model": "",
+        },
+        content_type="application/json",
+    )
+    with patch("finance.ai.httpx.Client") as http:
+        http.return_value.__enter__.return_value.get.return_value = type(
+            "Response",
+            (),
+            {
+                "raise_for_status": lambda self: None,
+                "json": lambda self: {"data": [{"id": "qwen2.5:7b"}, {"id": "llama3.1:8b"}]},
+            },
+        )()
+        listed = client.get("/api/ai-models")
+    assert listed.status_code == 200
+    assert listed.json()["items"] == ["qwen2.5:7b", "llama3.1:8b"]
+    call = http.return_value.__enter__.return_value.get.call_args
+    assert call.args[0] == "http://127.0.0.1:11434/v1/models"
+
+    with patch("finance.ai.httpx.Client") as http:
+        http.return_value.__enter__.return_value.get.side_effect = httpx.ConnectError("boom")
+        failed = client.get("/api/ai-models")
+    assert failed.status_code == 502
+
+
+def test_assistant_uses_org_db_config(workspace):
+    ds, _, client, *_ = workspace
+    client.put(
+        "/api/ai-config",
+        data={
+            "enabled": True,
+            "provider": "local",
+            "base_url": "http://127.0.0.1:11434/v1",
+            "model": "qwen2.5:7b",
+        },
+        content_type="application/json",
+    )
+    with patch("finance.assistant.httpx.Client") as http:
+        http.return_value.__enter__.return_value.post.return_value = completed_response()
+        response = client.post(
+            f"/api/datasets/{ds.pk}/assistant",
+            data={
+                "question": "分析儿科收入",
+                "context": {"start": "2026-08", "end": "2026-08", "comparison": "yoy", "group": "department"},
+                "use_model": True,
+                "consent": True,
+            },
+            content_type="application/json",
+        )
+    assert response.status_code == 200
+    assert response.json()["provider"] == "local"
+    call = http.return_value.__enter__.return_value.post.call_args
+    assert call.args[0] == "http://127.0.0.1:11434/v1/responses"
+    assert call.kwargs["json"]["model"] == "qwen2.5:7b"
+    assert "Authorization" not in call.kwargs["headers"]
+
+    disabled = AIConfig.objects.get(organization=ds.organization)
+    disabled.enabled = False
+    disabled.save(update_fields=["enabled"])
+    denied = client.post(
+        f"/api/datasets/{ds.pk}/assistant",
+        data={"question": "分析儿科收入", "use_model": True, "consent": True},
+        content_type="application/json",
+    )
+    assert denied.status_code == 503
+
+
 def test_model_intent_accepts_only_valid_dimensions_and_sends_no_rows(workspace, settings):
     ds, _, _, _, _ = workspace
+    settings.AI_ENABLED = True
     settings.OPENAI_MODEL = "test-model"
     settings.OPENAI_API_KEY = "test-key"
 
@@ -58,6 +223,7 @@ def test_model_intent_accepts_only_valid_dimensions_and_sends_no_rows(workspace,
 
 def test_model_intent_rejects_unknown_filter_and_incomplete_provider_response(workspace, settings):
     ds, *_ = workspace
+    settings.AI_ENABLED = True
     settings.OPENAI_MODEL = "test-model"
     settings.OPENAI_API_KEY = "test-key"
 
@@ -165,19 +331,34 @@ def test_formula_definition_library_is_private_validated_and_audited(workspace):
             "right": {"metric": "cost"},
         },
     }
-    saved = client.post(url, data={"definition": definition}, content_type="application/json")
+    saved = client.post(url, data={"definition": definition, "shared": True}, content_type="application/json")
     assert saved.status_code == 201
+    assert saved.json()["shared"] is True
     definition_id = saved.json()["id"]
     assert client.get(url).json()["items"][0]["definition"] == definition
 
     updated = client.post(
         url,
-        data={"definition": {**definition, "name": "  收入成本差  ", "meaning": "更新说明"}},
+        data={
+            "definition": {**definition, "name": "  收入成本差  ", "meaning": "更新说明"},
+            "shared": True,
+            "revision": saved.json()["revision"],
+        },
         content_type="application/json",
     )
     assert updated.status_code == 200
     assert FormulaDefinition.objects.filter(dataset=ds, user=ds.created_by).count() == 1
     assert updated.json()["definition"]["meaning"] == "更新说明"
+    assert updated.json()["revision"] == 2
+    assert len(updated.json()["history"]) == 1
+
+    stale = client.post(
+        url,
+        data={"definition": {**definition, "meaning": "旧标签页覆盖"}, "revision": 1},
+        content_type="application/json",
+    )
+    assert stale.status_code == 409
+    assert FormulaDefinition.objects.get(pk=definition_id).definition["meaning"] == "更新说明"
 
     other = Client()
     other_user = ds.created_by.__class__.objects.create_user(
@@ -185,7 +366,8 @@ def test_formula_definition_library_is_private_validated_and_audited(workspace):
     )
     Membership.objects.create(user=other_user, organization=ds.organization, role="analyst")
     assert other.login(username=other_user.username, password="Formula-Library-TestPassword991!")
-    assert other.get(url).json()["items"] == []
+    shared = other.get(url).json()["items"]
+    assert len(shared) == 1 and shared[0]["owned"] is False and shared[0]["shared"] is True
     assert other.delete(f"{url}/{definition_id}").status_code == 404
 
     deleted = client.delete(f"{url}/{definition_id}")
@@ -219,3 +401,26 @@ def test_formula_definition_library_rejects_unavailable_metric(workspace):
     )
     assert response.status_code == 400
     assert "成本" in response.json()["error"]
+
+
+def test_formula_definition_audit_failure_rolls_back_definition(workspace, monkeypatch):
+    ds, _, client, *_ = workspace
+    definition = {
+        "name": "审计回滚",
+        "meaning": "实际收入",
+        "scope": "所选分组与期间",
+        "missing": "结果不可用（#N/A）；零分母不可用",
+        "expression": {"metric": "revenue"},
+    }
+
+    def fail(*_args, **_kwargs):
+        raise RuntimeError("audit unavailable")
+
+    monkeypatch.setattr("finance.formula_views.audit", fail)
+    with pytest.raises(RuntimeError, match="audit unavailable"):
+        client.post(
+            f"/api/datasets/{ds.pk}/formula-definitions",
+            data={"definition": definition},
+            content_type="application/json",
+        )
+    assert not FormulaDefinition.objects.filter(dataset=ds, user=ds.created_by).exists()

tests/test_finance.py

@@ -133,6 +133,35 @@ def test_evidence_pagination_returns_stable_pages_and_rejects_invalid_bounds(wor
         assert response.status_code == 400
 
 
+def test_evidence_amounts_trim_storage_scale(workspace):
+    from decimal import Decimal
+
+    from finance.views import amount_text
+
+    assert amount_text(Decimal("10.000000000000000000000000")) == "10"
+    assert amount_text(Decimal("10.500000000000000000000000")) == "10.5"
+    assert amount_text(Decimal("0E-24")) == "0"
+    assert amount_text(None) is None
+
+    ds, _, client, *_ = workspace
+    response = client.post(
+        f"/api/datasets/{ds.pk}/evidence",
+        data={
+            "start": "2026-08",
+            "end": "2026-08",
+            "comparison": "yoy",
+            "group": "department",
+            "side": "current",
+            "limit": 1,
+        },
+        content_type="application/json",
+    )
+    row = response.json()["rows"][0]
+    assert row["revenue"] == "80"
+    assert row["cost"] == "30"
+    assert row["gross"] == "50"
+
+
 def test_settings_revision_and_invalid_metric_are_rejected(workspace):
     ds, _, client, *_ = workspace
     url = f"/api/datasets/{ds.pk}/settings"
@@ -169,8 +198,8 @@ def test_csv_export_neutralizes_formula_injection_and_preserves_exact_values(wor
     assert response.streaming
     content = b"".join(response.streaming_content).decode("utf-8-sig")
     assert "'=1+1" in content
-    assert ",-10.000000000000000000000000," in content
-    assert "'-10.000000000000000000000000" not in content
+    assert ",'-10,5,'-15" in content
+    assert "00000000000000" not in content
     assert "traceiq-evidence.csv" in response["Content-Disposition"]
 
     xlsx = client.post(

tests/test_formula_columns.py

@@ -97,8 +97,30 @@ def test_formula_workbook_exposes_custom_metric_as_recalculable_column(formula_d
     custom = workbook["自定义指标"]
     assert custom["B1"].value == "收入成本差（本期）"
     assert custom["B2"].value == f"='分析汇总'!C{metric_row}"
-    assert "含义：实际收入减成本" in workbook["使用说明"]["B12"].value
-    assert "范围：按所选分组及本期、基期计算" in workbook["使用说明"]["B12"].value
+    instruction_text = " ".join(str(cell.value) for row in workbook["使用说明"].iter_rows() for cell in row)
+    assert "含义：实际收入减成本" in instruction_text
+    assert "范围：按所选分组及本期、基期计算" in instruction_text
+
+
+def test_formula_workbook_protects_structure_and_unlocks_calculation_inputs(formula_data):
+    ds, member = formula_data
+    output = BytesIO()
+    build_formula_workbook(
+        ds,
+        member,
+        {"start": "2026-08", "end": "2026-08", "comparison": "yoy", "group": "department"},
+        output,
+    )
+    workbook = load_workbook(BytesIO(output.getvalue()), data_only=False)
+    data = workbook["计算明细"]
+    assert data.protection.sheet
+    assert data["D2"].protection.locked is False
+    assert data["F2"].protection.locked is False
+    assert data["G2"].protection.locked is False
+    assert data["I2"].protection.locked is False
+    assert data["C2"].protection.locked is True
+    assert data["M2"].protection.locked is True
+    assert workbook["原始证据"].protection.sheet
 
 
 def test_custom_expression_rejects_formula_text_and_unknown_metrics():

tests/test_formula_export_reliability.py

@@ -198,6 +198,67 @@ def test_formula_export_worker_records_path_preparation_failure(workspace, setti
     assert job.status == "failed"
 
 
+def test_formula_export_failure_does_not_follow_a_symlinked_user_directory(workspace, settings):
+    from finance.exporting import process_formula_export
+
+    ds, _, client, *_ = workspace
+    response = client.post(
+        f"/api/datasets/{ds.pk}/formula-exports",
+        data={"start": "2026-08", "end": "2026-08", "comparison": "yoy", "group": "department"},
+        content_type="application/json",
+    )
+    job = FormulaExport.objects.get(pk=response.json()["id"])
+    root = Path(settings.MEDIA_ROOT) / "formula-exports"
+    protected = Path(settings.MEDIA_ROOT) / "protected"
+    protected.mkdir()
+    target = protected / f"{job.pk}.xlsx"
+    target.write_bytes(b"keep")
+    root.mkdir()
+    (root / str(job.user_id)).symlink_to(protected, target_is_directory=True)
+
+    with pytest.raises(ValueError, match="符号链接"):
+        process_formula_export(job.pk)
+
+    job.refresh_from_db()
+    assert job.status == "failed"
+    assert target.read_bytes() == b"keep"
+
+
+def test_formula_export_failed_cleanup_is_observable_and_reclaimed(workspace, monkeypatch):
+    from django.core.management import call_command
+
+    from finance.exporting import process_formula_export
+
+    ds, _, client, *_ = workspace
+    response = client.post(
+        f"/api/datasets/{ds.pk}/formula-exports",
+        data={"start": "2026-08", "end": "2026-08", "comparison": "yoy", "group": "department"},
+        content_type="application/json",
+    )
+    job = FormulaExport.objects.get(pk=response.json()["id"])
+    target = Path(job.dataset.file.storage.location) / "formula-exports" / str(job.user_id) / f"{job.pk}.xlsx"
+    target.parent.mkdir(parents=True)
+    target.write_bytes(b"orphan")
+    monkeypatch.setattr(
+        "finance.exporting.build_formula_workbook",
+        lambda *_a, **_k: (_ for _ in ()).throw(ValueError("retry failed")),
+    )
+    real_unlink = Path.unlink
+    monkeypatch.setattr(Path, "unlink", lambda *_a, **_k: (_ for _ in ()).throw(OSError("read-only")))
+
+    with pytest.raises(ValueError, match="retry failed"):
+        process_formula_export(job.pk)
+    job.refresh_from_db()
+    assert job.status == "failed"
+    assert job.path == str(target)
+
+    monkeypatch.setattr(Path, "unlink", real_unlink)
+    call_command("cleanup_formula_exports")
+    job.refresh_from_db()
+    assert job.path == ""
+    assert target.exists() is False
+
+
 def test_formula_workbook_rejects_unclassified_label_collision(workspace):
     from decimal import Decimal
 
@@ -374,3 +435,20 @@ def test_formula_workbook_rejects_dimension_keys_that_collide_with_reserved_head
             {"start": "2026-08", "end": "2026-08", "comparison": "yoy", "group": "revenue"},
             BytesIO(),
         )
+
+
+def test_custom_reconcile_reference_preserves_large_decimal_and_zero_division():
+    from finance.exporting import _evaluate_expression
+
+    expression = {
+        "operator": "divide",
+        "left": {"metric": "revenue"},
+        "right": {"number": 0},
+    }
+    assert (
+        _evaluate_expression(expression, {"revenue": Decimal("1.2345678901234567890123456789012345")}) is None
+    )
+    assert _evaluate_expression(
+        {"operator": "add", "left": {"metric": "revenue"}, "right": {"number": 1}},
+        {"revenue": Decimal("1234567890123456789012345678901234")},
+    ) == Decimal("1234567890123456789012345678901235")

tests/test_operations.py

@@ -46,6 +46,23 @@ def test_worker_processes_queued_import_and_formula_export(workspace):
     assert job.status == "processing"
 
 
+def test_worker_reclaims_processing_formula_export_after_restart(workspace):
+    ds, _, _, *_ = workspace
+    job = FormulaExport.objects.create(
+        dataset=ds,
+        user=ds.created_by,
+        context={"custom_columns": []},
+        status="processing",
+    )
+    from unittest.mock import patch
+
+    with patch(
+        "finance.management.commands.import_worker.process_formula_export", return_value={"rows": 5}
+    ) as process:
+        call_command("import_worker", once=True)
+    process.assert_called_once_with(job.pk)
+
+
 def test_formula_export_status_download_and_access_controls(workspace, settings, tmp_path):
     ds, _, client, _, other_client = workspace
     url = f"/api/datasets/{ds.pk}"
@@ -58,7 +75,7 @@ def test_formula_export_status_download_and_access_controls(workspace, settings,
     job.status = "succeeded"
     job.expires_at = timezone.now() + timedelta(hours=1)
     target = tmp_path / "formula-exports" / str(ds.created_by_id) / f"{job.pk}.xlsx"
-    target.parent.mkdir(parents=True)
+    target.parent.mkdir(parents=True, exist_ok=True)
     target.write_bytes(b"xlsx")
     job.path = str(target)
     job.save()
@@ -85,6 +102,29 @@ def test_formula_export_status_download_and_access_controls(workspace, settings,
     assert client.get(status_url).status_code == 403
 
 
+def test_formula_export_rechecks_role_when_worker_runs_and_file_is_downloaded(workspace, settings, tmp_path):
+    from finance.exporting import process_formula_export
+
+    ds, member, client, _, _ = workspace
+    job = FormulaExport.objects.create(dataset=ds, user=ds.created_by, context={}, status="processing")
+    member.role = "viewer"
+    member.save(update_fields=["role"])
+    with pytest.raises(PermissionError, match="撤权"):
+        process_formula_export(job.pk)
+    job.refresh_from_db()
+    assert job.status == "failed"
+
+    job.status = "succeeded"
+    job.expires_at = timezone.now() + timedelta(hours=1)
+    target = tmp_path / "formula-exports" / str(ds.created_by_id) / f"{job.pk}.xlsx"
+    target.parent.mkdir(parents=True, exist_ok=True)
+    target.write_bytes(b"xlsx")
+    job.path = str(target)
+    job.save(update_fields=["status", "expires_at", "path"])
+    assert client.get(f"/api/datasets/{ds.pk}/formula-exports/{job.pk}").status_code == 403
+    assert client.get(f"/api/datasets/{ds.pk}/formula-exports/{job.pk}/download").status_code == 403
+
+
 def test_formula_export_create_validates_definition_and_records_job(workspace):
     ds, _, client, *_ = workspace
     url = f"/api/datasets/{ds.pk}/formula-exports"