# BRIEFING — 2026-10-01T22:19:40Z

## Mission
Investigate scripted POI wave ambush, Boss Gate lore popup integration, and design M5 automated unit test suite tests/unit/test_encounter_zones.py (>= 10 tests, <= 300 lines).

## 🔒 My Identity
- Archetype: explorer
- Roles: investigator, analyzer, synthesizer, test suite designer
- Working directory: c:\Projects\FreeExile\.agents\teamwork\explorer_m5_3
- Original parent: 1cc48fc5-ce57-4f48-8964-24cab4bfcacc
- Milestone: M5 (Encounter Zone Architecture)

## 🔒 Key Constraints
- Read-only investigation — do NOT modify production code directly
- Adhere to GEMINI.md (code lengths <= 350 soft cap / 500 hard cap, Diátaxis docs, strict typing)
- Test suite design for tests/unit/test_encounter_zones.py must have >= 10 unit tests, <= 300 lines
- Proximity triggers: POI wave ambush <= 1.0 tile, Boss Gate lore popup <= 3.0 tiles
- Communication via files for content, send_message for coordination

## Current Parent
- Conversation ID: 1cc48fc5-ce57-4f48-8964-24cab4bfcacc
- Updated: 2026-10-01T22:19:40Z

## Investigation State
- **Explored paths**:
  - `ORIGINAL_REQUEST.md` (specifically R5)
  - `orchestrator_11/PROJECT.md` & `plan.md`
  - `explorer_m5_1/DISPATCH.md` & `explorer_m5_2/DISPATCH.md`
  - `client/webapp/js/engine/tile_grid_loader.js` (pois array inspection)
  - `client/webapp/js/engine/monster_system.js` (ambush and combat tick loop)
  - `client/webapp/js/engine/world_renderer.js` (waypoint, boss gate, and POI render hooks)
  - `client/webapp/js/engine/boss_gate_controller.js` (proximity, lore popup, encounter progress)
  - `server/world/wilderness_map_generator.py` and `server/world/map_binary_serializer.py`
  - `tests/unit/test_encounter_zones.py` (authored, verified, 12 tests, 229 lines)
- **Key findings**:
  - `window.currentMapMetadata.pois` provides array of `{x, y, type}`. Adding `isTriggered: boolean` tracks state.
  - Scripted POI wave ambush: triggers at distance <= 1.0 tile, spawns 3-5 monsters in an orbit (R ~ 1.8 tiles) on passable tiles.
  - Dual visual cues: Un-triggered has pulsing amber aura, rotating dashed rune ring, bobbing beacon; triggered extinguishes to stone altar and urn.
  - Boss Gate lore popup: triggers at <= 3.0 tiles, hides at > 3.5 tiles. Dynamically bound to `window.zoneEncounterProgress[zoneId]`, displays remaining packs to kill before gate opens. Auto-unlocks when remaining == 0.
  - Test suite `tests/unit/test_encounter_zones.py`: 12 tests, 229 lines, 100% pass rate in 0.28s, 0 regressions across 104 map tests.
- **Unexplored areas**: None for M5 Explorer 3 scope.

## Key Decisions Made
- Formulated POI wave ambush mechanics with radius 1.0 trigger, 3-5 monsters, radial distribution with passability check.
- Formulated dual-state visual rendering in `world_renderer.js`.
- Implemented and verified `tests/unit/test_encounter_zones.py` (12 tests, 229 lines).
- Documented complete architecture in `report.md` and `handoff.md`.

## Artifact Index
- `DISPATCH.md` — Assignment instructions
- `BRIEFING.md` — Persistent situational awareness
- `progress.md` — Heartbeat log
- `report.md` — Detailed technical report with implementation blueprints
- `handoff.md` — 5-component handoff report
- `tests/unit/test_encounter_zones.py` — Live automated unit test suite