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      "name": "Normalise & Prefilter",
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    {
      "name": "Invoice Candidate?",
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    },
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      "name": "Stop: Not A Candidate",
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    },
    {
      "name": "Has PDF Attachment?",
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      "position": [
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      ]
    },
    {
      "name": "Extract PDF Text",
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      "name": "Attach PDF Text",
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      "name": "Text Quality Gate",
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    },
    {
      "name": "Text Usable?",
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      ]
    },
    {
      "name": "Read Processed IDs",
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    },
    {
      "name": "Decide: Already Seen",
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    },
    {
      "name": "Already Processed?",
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    },
    {
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      "name": "Build Claude Request",
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      "name": "Claude: Classify & Extract",
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      "name": "Parse Claude Response",
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    },
    {
      "name": "Parsed OK?",
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      "position": [
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    },
    {
      "name": "Is Invoice?",
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      "position": [
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      ]
    },
    {
      "name": "Mark Not Invoice",
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    },
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      "name": "Validate Fields",
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    },
    {
      "name": "Read Existing Invoices",
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      ]
    },
    {
      "name": "Decide: Duplicate",
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      ]
    },
    {
      "name": "Is Duplicate?",
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      "position": [
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      ]
    },
    {
      "name": "Build Invoice Row",
      "type": "n8n-nodes-base.code",
      "position": [
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      ]
    },
    {
      "name": "Append Invoice Row",
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      ]
    },
    {
      "name": "Build Exception Row",
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    },
    {
      "name": "Append Exception Row",
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    }
  ],
  "connections": {
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            "type": "main",
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        ]
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    },
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            "node": "Invoice Candidate?",
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            "index": 0
          }
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    },
    "Invoice Candidate?": {
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            "node": "Has PDF Attachment?",
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            "index": 0
          }
        ],
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            "node": "Stop: Not A Candidate",
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            "index": 0
          }
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    },
    "Has PDF Attachment?": {
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          {
            "node": "Extract PDF Text",
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            "index": 0
          }
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            "node": "Use Email Body",
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            "index": 0
          }
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            "node": "Attach PDF Text",
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            "index": 0
          }
        ],
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            "node": "Build Exception Row",
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            "index": 0
          }
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    },
    "Attach PDF Text": {
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            "node": "Text Quality Gate",
            "type": "main",
            "index": 0
          }
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    },
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            "node": "Text Quality Gate",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Text Quality Gate": {
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          {
            "node": "Text Usable?",
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            "index": 0
          }
        ]
      ]
    },
    "Text Usable?": {
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            "node": "Read Processed IDs",
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            "index": 0
          }
        ],
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            "node": "Build Exception Row",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read Processed IDs": {
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          {
            "node": "Decide: Already Seen",
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            "index": 0
          }
        ]
      ]
    },
    "Decide: Already Seen": {
      "main": [
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          {
            "node": "Already Processed?",
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            "index": 0
          }
        ]
      ]
    },
    "Already Processed?": {
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          {
            "node": "Stop: Already Processed",
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            "index": 0
          }
        ],
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          {
            "node": "Build Claude Request",
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    },
    "Build Claude Request": {
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            "node": "Claude: Classify & Extract",
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          }
        ]
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    },
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            "node": "Parse Claude Response",
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          }
        ],
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            "node": "Build Exception Row",
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          }
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    },
    "Parse Claude Response": {
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            "node": "Parsed OK?",
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          }
        ]
      ]
    },
    "Parsed OK?": {
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            "node": "Is Invoice?",
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    },
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        ],
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            "node": "Mark Not Invoice",
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            "node": "Read Existing Invoices",
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    },
    "Read Existing Invoices": {
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            "node": "Decide: Duplicate",
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            "node": "Is Duplicate?",
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          }
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    },
    "Is Duplicate?": {
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            "node": "Build Exception Row",
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            "node": "Append Invoice Row",
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}