rvt-to-excel

# RVT to Excel Conversion

## Business Case

### Problem Statement
BIM data inside RVT files needs to be extracted for:
- Processing multiple projects in batch
- Integrating BIM data with analytics pipelines
- Sharing structured data with stakeholders
- Generating reports and quantity takeoffs

### Solution
Convert RVT files to structured Excel databases for analysis and reporting.

### Business Value
- **Batch processing** - Convert multiple projects
- **Data accessibility** - Excel format for universal access
- **Pipeline integration** - Feed data to BI tools, ML models
- **Structured output** - Organized element data and properties

## Technical Implementation

### CLI Syntax
```bash
RvtExporter.exe <input_path> [export_mode] [options]
```

### Export Modes
| Mode | Categories | Description |
|------|-----------|-------------|
| `basic` | 309 | Essential structural elements |
| `standard` | 724 | Standard BIM categories |
| `complete` | 1209 | All Revit categories |
| `custom` | User-defined | Specific categories only |

### Options
| Option | Description |
|--------|-------------|
| `bbox` | Include bounding box coordinates |
| `rooms` | Include room associations |
| `schedules` | Export all schedules to sheets |
| `sheets` | Export sheets to PDF |

### Examples

```bash
# Basic export
RvtExporter.exe "C:\Projects\Building.rvt" basic

# Complete with bounding boxes
RvtExporter.exe "C:\Projects\Building.rvt" complete bbox

# Full export with all options
RvtExporter.exe "C:\Projects\Building.rvt" complete bbox rooms schedules sheets

# Batch processing
for /R "C:\Projects" %f in (*.rvt) do RvtExporter.exe "%f" standard bbox
```

### Python Integration

```python
import subprocess
import pandas as pd
from pathlib import Path
from typing import List, Optional

class RevitExporter:
    def __init__(self, exporter_path: str = "RvtExporter.exe"):
        self.exporter = Path(exporter_path)
        if...