# BRIEFING — 2026-10-02T06:17:00Z

## Mission
Analyze the global keys ReferenceError and script load ordering in client/web_pc/index.html, and provide verified fix recommendations in handoff.md.

## 🔒 My Identity
- Archetype: Teamwork explorer
- Roles: Read-only investigation: analyze problems, synthesize findings, produce structured reports
- Working directory: c:\Projects\FreeExile\.agents\teamwork\explorer_iter2_2
- Original parent: 7eb101bf-362e-46b0-81cc-0a9216617c39
- Milestone: PC Desktop Client (client/web_pc) iteration 2

## 🔒 Key Constraints
- Read-only investigation — do NOT implement
- Do NOT modify production source code
- File lengths and structure adhere to project standards
- Use send_message to report back to parent

## Current Parent
- Conversation ID: 7eb101bf-362e-46b0-81cc-0a9216617c39
- Updated: 2026-10-02T06:17:00Z

## Investigation State
- **Explored paths**:
  - `client/webapp/js/engine/canvas_renderer.js:42-52, 344-346`
  - `client/webapp/js/engine/joystick.js:7-9, 151-164`
  - `client/webapp/js/engine/iso_math.js:12-52, 91-92`
  - `client/webapp/index.html:220-230`
  - `client/web_pc/index.html:1-396`
  - `client/web_pc/js/pc_input_controller.js:1-60, 255-272`
  - `client/web_pc/js/pc_hud_controller.js:1-159`
  - `client/web_pc/js/pc_main.js:1-197`
  - `tools/serve_web_pc.py:60-190`
  - `tools/lint/check_code_and_doc_hygiene.py:40-90`
  - `tests/e2e/test_pc_desktop_client_e2e.py:1-279`
  - `tests/unit/test_pc_web_client.py:1-187`
  - `tests/unit/test_pc_web_client_layout.py:1-141`
  - Reviewer reports: `reviewer_1/handoff.md`, `reviewer_2/handoff.md`
- **Key findings**:
  - `canvas_renderer.js:43-46` reads bare identifier `keys['w']`, which throws `ReferenceError: keys is not defined` if `keys` is neither declared in scope nor attached to `window`.
  - In `client/web_pc/index.html`, `joystick.js` was omitted, and `pc_input_controller.js` was loaded at line 391 (after `canvas_renderer.js` at line 354).
  - `iso_math.js:91` defaults unset `fe_sim_mode` to `'iphone'`, dynamically injecting `.iphone-frame` on `#app-viewport` on desktop.
  - `tools/lint/check_code_and_doc_hygiene.py` enforces `HTML_HARD_CAP = 400` on `index.html` (currently at 395 lines, only 5 lines of headroom).
  - `pc_hud_controller.js` has invalid named imports `{ hudOrbs }` from `hud_orbs.js` and `{ minimapHud }` from `minimap_hud.js`.
- **Unexplored areas**: None. Root cause analysis and exact remediation strategy are complete.

## Key Decisions Made
- Recommending synchronous preamble script in `<head>` declaring `var keys = window.keys = {}; window.enableWasdMovement = false; try { localStorage.setItem('fe_sim_mode', 'fullscreen'); } catch(e) {}`.
- Recommending moving `<script src="../web_pc/js/pc_input_controller.js"></script>` from line 391 to line 338 (after `collision_engine.js` and before `canvas_renderer.js`).
- Specifying script line compaction to keep `client/web_pc/index.html` under the 400-line hard cap.

## Artifact Index
- DISPATCH.md — dispatch instructions and message log
- BRIEFING.md — persistent working memory
- progress.md — liveness heartbeat
- handoff.md — comprehensive 5-component investigation report