Fix Phase 7 crash + improve error handling across all phases

- Fixed: farmq.db empty date strings causing API 500 error
- Phase 7: exit 1 → return 1 (skip and continue instead of crash)
- Phase 4/7 failures no longer kill the script
- Error trap now shows current progress info (pharmacy, VPN IP, CT VMID, etc.)
- Helps debugging when script fails mid-execution

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pharmq-setup.sh

@@ -772,12 +772,14 @@ JSONEOF
         else
             print_err "pharmacy_code 추출 실패"
             print_info "응답: $PHARMACY_RESPONSE"
-            exit 1
+            print_warn "Phase 7을 건너뛰고 계속 진행합니다."
+            return 1
         fi
     else
         print_err "약국 생성 실패"
         print_info "응답: $PHARMACY_RESPONSE"
-        exit 1
+        print_warn "Phase 7을 건너뛰고 계속 진행합니다."
+        return 1
     fi
 
     # 7-2. PVE host 장비 추가
@@ -939,7 +941,25 @@ phase8_verify() {
 # ============================================================
 # 에러 핸들링
 # ============================================================
-trap 'echo -e "\n${RED}❌ 설치 중 오류가 발생했습니다 (line $LINENO). 로그를 확인해주세요.${NC}"; exit 1' ERR
+error_handler() {
+    local exit_code=$?
+    local line_no=$1
+    echo ""
+    echo -e "${RED}════════════════════════════════════════════${NC}"
+    echo -e "${RED}❌ 오류 발생 (line ${line_no}, exit code ${exit_code})${NC}"
+    echo -e "${RED}════════════════════════════════════════════${NC}"
+    echo -e "${YELLOW}현재까지 진행된 정보:${NC}"
+    [ -n "${PHARMACY_NAME:-}" ] && echo -e "  약국명: ${PHARMACY_NAME}"
+    [ -n "${PVE_VPN_IP:-}" ] && echo -e "  PVE VPN IP: ${PVE_VPN_IP}"
+    [ -n "${CT_VMID:-}" ] && echo -e "  CT VMID: ${CT_VMID}"
+    [ -n "${CT_VPN_IP:-}" ] && echo -e "  CT VPN IP: ${CT_VPN_IP}"
+    [ -n "${VM_VMID:-}" ] && echo -e "  VM VMID: ${VM_VMID}"
+    [ -n "${PHARMACY_CODE:-}" ] && echo -e "  약국 코드: ${PHARMACY_CODE}"
+    echo ""
+    echo -e "${YELLOW}이 정보를 개발자에게 전달해주세요.${NC}"
+    exit 1
+}
+trap 'error_handler $LINENO' ERR
 
 # ============================================================
 # 메인 실행
@@ -957,10 +977,10 @@ main() {
     phase1_repo_fix
     phase2_tailscale_pve
     phase3_collect_info
-    phase4_pbs_restore
+    phase4_pbs_restore || print_warn "Phase 4 실패 — 계속 진행"
     phase5_create_ct
     phase6_setup_ct
-    phase7_register
+    phase7_register || print_warn "Phase 7 실패 — 수동 등록 필요"
     phase8_verify
 }