# BRIEFING — 2026-10-01T00:44:30Z

## Mission
Investigate and design the exact implementation for Dual Fluid Orbs (Life & Mana Orbs) for FreeExile webapp HUD (Milestone 1).

## 🔒 My Identity
- Archetype: teamwork_preview_explorer
- Roles: read-only investigation, architectural analysis, implementation specification
- Working directory: c:\Projects\FreeExile\.agents\teamwork\explorer_m1_1_gen2
- Original parent: a47f1e48-2ddf-45d3-8179-86f630ec4561
- Milestone: Milestone 1 - Dual Health & Mana Orbs

## 🔒 Key Constraints
- Read-only investigation — do NOT implement directly in source repository
- Strict file length limits: JS <= 350 lines, CSS <= 350 lines, HTML <= 400 lines
- Produce proposed file artifacts in working directory: `proposed_hud_orbs.js`, `proposed_hud_skills.css`, `proposed_index_markup.html`, `proposed_test_hud_orbs.py`, and `handoff.md`

## Current Parent
- Conversation ID: a47f1e48-2ddf-45d3-8179-86f630ec4561
- Updated: 2026-10-01T00:44:30Z

## Investigation State
- **Explored paths**:
  * `client/webapp/index.html` (lines 30-115, 170-179)
  * `client/webapp/assets/ui/combat/hud_combat_metadata.json`
  * `client/webapp/assets/ui/combat/hud_liquid_glow.metal`
  * `client/webapp/assets/ui/combat/hud_dual_orbs_frame.png`
  * `client/webapp/js/main.js`
  * `client/webapp/js/engine/canvas_renderer.js`
  * `client/webapp/js/engine/monster_system.js`
  * `client/webapp/js/engine/iso_math.js`
  * `client/webapp/css/main.css`
  * `spec_miner_survey_ui_1/handoff.md`
- **Key findings**:
  * Vitality was only a 56px strip in `#player-hp-bar`, with 0 Mana UI.
  * Metal shader and metadata define 180x180 orb canvas with `sin(x * 0.05 + time * 3.0)` wave formula.
  * High-DPI Canvas 2D (180x180 scaled to 86px CSS) provides crisp retina fluid rendering without WebGL context overhead.
  * Low HP threshold (< 25%) triggers dual pulse: `.orb-low-pulse` heartbeat scale/glow and `#hud-low-hp-vignette`.
  * Integration into `canvas_renderer.js`'s `renderLoop` guarantees smooth 120 FPS continuous wave animation.
- **Unexplored areas**: None for Milestone 1 Dual Orbs scope.

## Key Decisions Made
- Replicated exact Metal wave formula `sin(x * 0.05 + time * 3.0)` in Canvas 2D.
- Added smooth value damping (`LERP_SPEED = 8.0`) to prevent jarring snaps upon damage/healing.
- Generated complete proposed artifacts adhering strictly to code hygiene limits.

## Artifact Index
- `DISPATCH.md` — Incoming dispatch log
- `BRIEFING.md` — Persistent agent memory
- `progress.md` — Execution heartbeat
- `proposed_hud_orbs.js` — Proposed JS module for Dual Orbs (286 lines)
- `proposed_hud_skills.css` — Proposed CSS stylesheet (242 lines)
- `proposed_index_markup.html` — Exact DOM snippet for `index.html` (52 lines)
- `proposed_test_hud_orbs.py` — Unit test specification (86 lines)
- `handoff.md` — 5-component handoff report (176 lines)