feat(server): 完成 P3 后端API与回归（D2~D9）

- workflow: 任务详情/转审候选/列表分页字段（D5）
- reimbursements: 列表API + pay凭证字段/幂等增强（D7）
- invoice-pool: 列表/详情API + 上传pending_ocr（D9）
- ocr/audit: mock provider + 回归脚本 + regression-all开关（D2/D3）
- CI: 新增 ci-minimal / ci-regression 工作流（D4）

server/scripts/regression-all.sh

@@ -2,17 +2,37 @@
 set -euo pipefail
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+RUN_AUDIT_REGRESSION="${RUN_AUDIT_REGRESSION:-1}"
+RUN_OCR_REGRESSION="${RUN_OCR_REGRESSION:-1}"
 
-echo "=== [1/3] Smoke Test ==="
+echo "=== [1/5] Smoke Test ==="
 "$SCRIPT_DIR/smoke-test.sh"
 echo ""
 
-echo "=== [2/3] Dedup Regression ==="
+echo "=== [2/5] Dedup Regression ==="
 "$SCRIPT_DIR/regression-dedup.sh"
 echo ""
 
-echo "=== [3/3] Workflow Actions Regression ==="
+echo "=== [3/5] Workflow Actions Regression ==="
 "$SCRIPT_DIR/regression-workflow-actions.sh"
 echo ""
 
+if [[ "$RUN_AUDIT_REGRESSION" == "1" ]]; then
+  echo "=== [4/5] Audit Regression ==="
+  "$SCRIPT_DIR/regression-audit.sh"
+  echo ""
+else
+  echo "=== [4/5] Audit Regression (skipped, RUN_AUDIT_REGRESSION=$RUN_AUDIT_REGRESSION) ==="
+  echo ""
+fi
+
+if [[ "$RUN_OCR_REGRESSION" == "1" ]]; then
+  echo "=== [5/5] OCR Regression ==="
+  "$SCRIPT_DIR/regression-ocr.sh"
+  echo ""
+else
+  echo "=== [5/5] OCR Regression (skipped, RUN_OCR_REGRESSION=$RUN_OCR_REGRESSION) ==="
+  echo ""
+fi
+
 echo "[OK] All regressions passed"