You are helping me build the following AI agent workflow.

## Goal
Batch Convert CAD/BIM Files to XLSX: Batch converts CAD/BIM files from a folder into XLSX/DAE using RvtExporter, verifies the outputs, and opens an HTML summary report.

## Specification
- What it does: Scans a specified source folder for CAD/BIM files such as .rvt, .ifc, .dwg, or .dgn. It runs the local RvtExporter executable to batch convert these files into analysis-ready XLSX and optional DAE formats with configurable export modes. The agent verifies output file existence and size, then generates an automatic HTML summary report upon completion.
- Trigger: Run manually (Manual · on demand)
- Autonomy: Fully hands-off
- Expected setup effort: about an afternoon
- Tools/services involved:
  - n8n: Workflow orchestration and trigger management
  - Code: Executing conversion logic via PowerShell and RvtExporter

## Known pitfalls, handle each one explicitly in your implementation
1. File locks from open CAD applications can prevent conversion, so ensure all source files are closed or use read-only access flags.
2. Path length limits on Windows may truncate output paths, so validate that the destination folder path stays under 260 characters.
3. Large batches can exhaust memory during HTML generation, so stream report data instead of loading entire file lists into RAM.

## Reference implementation
https://n8n.io/workflows/7650 (workflow template)
Fetch and inspect this before building. If it matches my stack, adapt it;
if not, rebuild the pattern with my tools.

## Process requirements
1. Before building: ask me which of the listed tools I actually use and
   what my platform is (n8n / Make / code / other). Do not assume.
2. Adapt the pattern to my answers; do not force the reference stack.
3. Address every pitfall above; tell me how you handled each.
4. Provide a test plan I can run before letting this touch real data.
5. Ask before any step that sends messages, modifies data, or spends money.

Source: https://usecasesforagents.com/use-case/batch-convert-cad-bim-files-to-xlsx/ via usecasesforagents.com