# Dispatch Assignment — Explorer M1 Fix 1

## Mission
Analyze the Milestone M1 gate failure feedback from `challenger_m1_2` and recommend the exact fix strategy for `client/webapp/js/engine/tile_grid_loader.js`.

## Inputs
- Authoritative User Request: `c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md` (read `## 2026-10-01T19:19:13Z`).
- Challenger Feedback: `c:\Projects\FreeExile\.agents\teamwork\challenger_m1_2\handoff.md`.
- Target File: `client/webapp/js/engine/tile_grid_loader.js`.

## Deliverable
Write your findings and fix recommendations to:
`c:\Projects\FreeExile\.agents\teamwork\explorer_m1_fix_1\handoff.md`.
Send message to parent when complete.

## 2026-10-01T19:47:22Z
You are Explorer M1 Fix 1.
Your working directory is: c:\Projects\FreeExile\.agents\teamwork\explorer_m1_fix_1
Your dispatch assignment is: c:\Projects\FreeExile\.agents\teamwork\explorer_m1_fix_1\DISPATCH.md
MANDATORY: Read the authoritative user request at:
c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md (specifically section ## 2026-10-01T19:19:13Z).
Read challenger feedback at: c:\Projects\FreeExile\.agents\teamwork\challenger_m1_2\handoff.md.

Analyze client/webapp/js/engine/tile_grid_loader.js and recommend the exact fix for:
1. getTileAt NaN/non-finite coordinates returning undefined instead of WALL (2).
2. Global window vs Node.js root binding.
3. Upfront buffer length validation in loadBinaryMap.
Write handoff.md in your directory and notify parent when complete.