the-nexus/LEGACY_MATRIX_AUDIT.md

# Legacy Matrix Audit — Migration Table

Purpose:
Preserve quality work from `/Users/apayne/the-matrix` before the Nexus browser shell is rebuilt.

Canonical rule:
- `Timmy_Foundation/the-nexus` is the only canonical 3D repo.
- `/Users/apayne/the-matrix` is legacy source material, not a parallel product.
- This document is the authoritative migration table for issue #685.

## Verified Legacy State

Local legacy repo: `/Users/apayne/the-matrix`

Observed facts:
- Vite browser app, vanilla JS + Three.js 0.171.0
- 24 JS modules under `js/`
- Smoke suite: 87 passed, 0 failed
- Package scripts: dev, build, preview, test
- PWA manifest + service worker
- Vite config with code-splitting (Three.js in separate chunk)
- Quality-tier system for hardware detection
- WebSocket client with reconnection, heartbeat, mock mode
- Full avatar FPS movement + PiP camera
- Sub-world portal system with zone triggers

## Migration Table

Decision key:
- **CARRY** = transplant concepts and patterns into Nexus vNext
- **ARCHIVE** = keep as reference, do not directly transplant
- **DROP** = do not preserve unless re-justified

### Core Modules

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `js/main.js` | 180 | App bootstrap, render loop, WebGL context recovery | **CARRY** | Architectural pattern. Shows clean init/teardown lifecycle, context-loss recovery, visibility pause. Nexus needs this loop but should not copy the monolithic wiring. |
| `js/world.js` | 95 | Scene, camera, renderer, grid, lights | **CARRY** | Foundational. Quality-tier-aware renderer setup, grid floor, lighting. Nexus already has a world but should adopt the tier-aware antialiasing and pixel-ratio capping. |
| `js/config.js` | 68 | Connection config via URL params + env vars | **ARCHIVE** | Pattern reference only. Nexus config should route through Hermes harness, not Vite env vars. The URL-override pattern (ws, token, mock) is worth remembering. |
| `js/quality.js` | 90 | Hardware detection, quality tier (low/medium/high) | **CARRY** | Directly useful. DPR capping, core/memory/screen heuristics, WebGL renderer sniffing. Nexus needs this for graceful degradation on Mac/iPad. |
| `js/storage.js` | 39 | Safe localStorage with in-memory fallback | **CARRY** | Small, robust, sandbox-proof. Nexus should use this or equivalent. Prevents crashes in sandboxed iframes. |

### Agent System

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `js/agent-defs.js` | 30 | Agent identity data (id, label, color, role, position) | **CARRY** | Seed data model. Nexus agents should be defined similarly — data-driven, not hardcoded in render logic. Color hex helper is trivial but useful. |
| `js/agents.js` | 523 | Agent 3D objects, movement, state, connection lines, hot-add/remove | **CARRY** | Core visual system. Shared geometries (perf), movement interpolation, wallet-health stress glow, auto-placement algorithm, connection-line pulse. All valuable. Needs integration with real agent state from Hermes. |
| `js/behaviors.js` | 413 | Autonomous agent behavior state machine | **ARCHIVE** | Pattern reference. The personality-weighted behavior selection, conversation pairing, and artifact-placement system are well-designed. But Nexus behaviors should be driven by Hermes, not a client-side simulation. Keep the architecture, drop the fake-autonomy. |
| `js/presence.js` | 139 | Agent presence HUD (online/offline, uptime, state) | **CARRY** | Valuable UX. Live "who's here" panel with uptime tickers and state indicators. Needs real backend state, not mock assumptions. |

### Visitor & Interaction

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `js/visitor.js` | 141 | Visitor enter/leave protocol, chat input | **CARRY** | Session lifecycle. Device detection, visibility-based leave/return, chat input wiring. Directly applicable to Nexus visitor tracking. |
| `js/avatar.js` | 360 | FPS movement, PiP dual-camera, touch input | **CARRY** | Visitor embodiment. WASD + arrow movement, first/third person swap, PiP canvas, touch joystick, right-click mouse-look. Strong work. Needs tuning for Nexus world bounds. |
| `js/interaction.js` | 296 | Raycasting, click-to-select agents, info popup | **CARRY** | Essential for any browser world. OrbitControls, pointer/tap detection, agent popup with state/role, TALK button. The popup-anchoring-to-3D-position logic is particularly well done. |
| `js/zones.js` | 161 | Proximity trigger zones (portal enter/exit, events) | **CARRY** | Spatial event system. Portal traversal, event triggers, once-only zones. Nexus portals (#672) need this exact pattern. |

### Chat & Communication

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `js/bark.js` | 141 | Speech bubble system with typing animation | **CARRY** | Timmy's voice in-world. Typing animation, queue, auto-dismiss, emotion tags, demo bark lines. Strong expressive presence. The demo lines ("The Tower watches. The Tower remembers.") are good seed content. |
| `js/ui.js` | 285 | Chat panel, agent list, HUD, streaming tokens | **CARRY** | Chat infrastructure. Rolling chat buffer, per-agent localStorage history, streaming token display with cursor animation, HTML escaping. Needs reconnection to Hermes chat instead of WS mock. |
| `js/transcript.js` | 183 | Conversation transcript logger, export | **ARCHIVE** | Pattern reference. The rolling buffer, structured JSON entries, TXT/JSON download, HUD badge are all solid. But transcript authority should live in Hermes, not browser localStorage. Keep the UX pattern, rebuild storage layer. |

### Visual Effects

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `js/effects.js` | 195 | Matrix rain particles + starfield | **CARRY** | Atmospheric foundation. Quality-tier particle counts, frame-skip optimization, adaptive draw-range (FPS-budget recovery), bounding-sphere pre-compute. This is production-grade particle work. |
| `js/ambient.js` | 212 | Mood-driven atmosphere (lighting, fog, rain, stars) | **CARRY** | Scene mood engine. Smooth eased transitions between mood states (calm, focused, excited, contemplative, stressed), per-mood lighting/fog/rain/star parameters. Directly supports Nexus atmosphere. |
| `js/satflow.js` | 261 | Lightning payment particle flow | **CARRY** | Economy visualization. Bezier-arc particles, staggered travel, burst-on-arrival, pooling. If Nexus shows any payment/economy flow, this is the pattern. |

### Economy & Scene

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `js/economy.js` | 100 | Wallet/treasury HUD panel | **ARCHIVE** | UI pattern reference. Clean sats formatting, per-agent balance rows, health-colored dots, recent transactions. Worth rebuilding when backed by real sovereign metrics. |
| `js/scene-objects.js` | 718 | Dynamic 3D object registry, portals, sub-worlds | **CARRY** | Critical. Geometry/material factories, animation system (rotate/bob/pulse/orbit), portal visual (torus ring + glow disc + zone), sub-world load/unload, text sprites, compound groups. This is the most complex and valuable module. Nexus portals (#672) should build on this. |

### Backend Bridge

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `js/websocket.js` | 598 | WebSocket client, message dispatcher, mock mode | **ARCHIVE** | Pattern reference only. Reconnection with exponential backoff, heartbeat/zombie detection, rich message dispatch (40+ message types), streaming chat support. The architecture is sound but must be reconnected to Hermes transport, not copied wholesale. The message-type catalog is the most valuable reference artifact. |
| `js/demo.js` | ~300 | Demo autopilot (mock mode simulation) | **DROP** | Fake activity simulation. Deliberately creates the illusion of live data. Do not preserve. If Nexus needs a demo mode, build a clearly-labeled one that doesn't pretend to be real. |

### Testing & Build

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `test/smoke.mjs` | 235 | Automated browser smoke test suite | **CARRY** | Testing discipline. Module inventory check, export verification, HTML structure validation, Vite build test, bundle-size budget, PWA manifest check. Nexus should adopt this pattern (adapted for its own module structure). |
| `vite.config.js` | 53 | Build config with code splitting, SW generation | **ARCHIVE** | Build tooling reference. manualChunks for Three.js, SW precache generation plugin. Relevant if Nexus re-commits to Vite. |
| `sw.js` | ~40 | Service worker with precache | **ARCHIVE** | PWA reference. Relevant only if Nexus pursues offline-first PWA. |
| `manifest.json` | ~20 | PWA manifest | **ARCHIVE** | PWA reference. |

### Server-Side (Python)

| File | Lines | Capability | Decision | Why for Nexus |
|------|-------|------------|----------|---------------|
| `server/bridge.py` | ~900 | WebSocket bridge server | **ARCHIVE** | Reference. Hermes replaces this role. Keep for protocol schema reference. |
| `server/gateway.py` | ~400 | HTTP gateway | **ARCHIVE** | Reference. |
| `server/ollama_client.py` | ~280 | Ollama integration | **ARCHIVE** | Reference. Relevant if Nexus needs local model calls. |
| `server/research.py` | ~450 | Research pipeline | **ARCHIVE** | Reference. |
| `server/webhooks.py` | ~350 | Webhook handler | **ARCHIVE** | Reference. |
| `server/test_*.py` | ~5 files | Server test suites | **ARCHIVE** | Testing patterns worth studying. |

## Summary by Decision

### CARRY FORWARD (17 modules)
These modules contain patterns, algorithms, or entire implementations that should move into the Nexus browser shell:

- `quality.js` — hardware detection
- `storage.js` — safe persistence
- `world.js` — scene foundation
- `agent-defs.js` — agent data model
- `agents.js` — agent visualization + movement
- `presence.js` — online presence HUD
- `visitor.js` — session lifecycle
- `avatar.js` — FPS embodiment
- `interaction.js` — click/select/raycast
- `zones.js` — spatial triggers
- `bark.js` — speech bubbles
- `ui.js` — chat/HUD
- `effects.js` — particle effects
- `ambient.js` — mood atmosphere
- `satflow.js` — payment flow particles
- `scene-objects.js` — dynamic objects + portals
- `test/smoke.mjs` — smoke test discipline

### ARCHIVE AS REFERENCE (9 modules/files)
Keep for patterns, protocol schemas, and architectural reference. Do not directly transplant:

- `config.js` — config pattern (use Hermes instead)
- `behaviors.js` — behavior architecture (use Hermes-driven state)
- `transcript.js` — transcript UX (use Hermes storage)
- `economy.js` — economy UI pattern (use real metrics)
- `websocket.js` — message protocol catalog + reconnection patterns
- `vite.config.js` — build tooling
- `sw.js`, `manifest.json` — PWA reference
- `server/*.py` — server protocol schemas

### DELIBERATELY DROP (2)
Do not preserve unless re-justified:

- `demo.js` — fake activity simulation; creates false impression of live system
- `main.js` monolithic wiring — the init pattern carries, the specific module wiring does not

## Concern Separation for Nexus vNext

When rebuilding inside `the-nexus`, keep these concerns in separate modules:

1. **World shell** — scene, camera, renderer, grid, lights, fog
2. **Effects layer** — rain, stars, ambient mood transitions
3. **Agent visualization** — 3D objects, labels, connection lines, movement
4. **Visitor embodiment** — avatar, FPS controls, PiP camera
5. **Interaction layer** — raycasting, selection, zones, portal traversal
6. **Communication surface** — bark, chat panel, streaming tokens
7. **Presence & HUD** — who's-online, economy panel, transcript controls
8. **Harness bridge** — WebSocket/API transport to Hermes (NOT a copy of websocket.js)
9. **Quality & config** — hardware detection, runtime configuration
10. **Smoke tests** — automated validation

Do not collapse all of this into one giant app file again.
Do not let visual shell code become telemetry authority.

## Migration Rule

Rescue knowledge first.
Then rescue modules.
Then rebuild the browser shell inside `the-nexus`.

No more ghost worlds.
No more parallel 3D repos.