feat: 财务看板口径重构与半年模拟数据及报销状态注册表

- 重构 finance_dashboard 口径计算，新增模拟公司画像数据生成与筛选
- 引入 expense_claim_status_registry 统一报销状态流转
- 完善报销草稿流程、Item Sync 与本体解析器
- 优化总览页趋势图、分页组件与请求进度步骤
- 增强报销申请快速预览、本体工具与详情展示
- 新增半年报销模拟数据种子脚本与状态审计工具
- 补充财务看板、报销状态注册与模拟数据测试覆盖

server/tests/test_expense_claim_status_registry.py

@@ -0,0 +1,52 @@
+from app.services.expense_claim_status_registry import (
+    claim_status_code,
+    normalize_expense_claim_state,
+)
+from app.services.expense_claim_workflow_constants import (
+    APPROVAL_DONE_STAGE,
+    ARCHIVE_ACCOUNTING_STAGE,
+    FINANCE_APPROVAL_STAGE,
+    PAYMENT_PAID_STAGE,
+    PAYMENT_PENDING_STAGE,
+)
+
+
+def test_normalize_legacy_finance_review_to_submitted_finance_stage() -> None:
+    state = normalize_expense_claim_state(
+        "finance_review",
+        "finance_review",
+        claim_no="SIM-EXP-2026-0001",
+        expense_type="travel",
+    )
+
+    assert state.status == "submitted"
+    assert state.approval_stage == FINANCE_APPROVAL_STAGE
+    assert state.status_code == 20
+    assert state.changed is True
+
+
+def test_normalize_reimbursement_archive_stage_differs_from_application_done() -> None:
+    reimbursement_state = normalize_expense_claim_state(
+        "approved",
+        "completed",
+        claim_no="SIM-EXP-2026-0002",
+        expense_type="travel",
+    )
+    application_state = normalize_expense_claim_state(
+        "approved",
+        "completed",
+        claim_no="AP-20260602-0001",
+        expense_type="travel_application",
+    )
+
+    assert reimbursement_state.approval_stage == ARCHIVE_ACCOUNTING_STAGE
+    assert application_state.approval_stage == APPROVAL_DONE_STAGE
+
+
+def test_normalize_payment_stages_by_status() -> None:
+    pending_state = normalize_expense_claim_state("pending_payment", "payment")
+    paid_state = normalize_expense_claim_state("paid", "payment")
+
+    assert pending_state.approval_stage == PAYMENT_PENDING_STAGE
+    assert paid_state.approval_stage == PAYMENT_PAID_STAGE
+    assert claim_status_code("paid") == 50