Cycle 46

The AI's Plan

### Cycle 46 Plan: Implement Expt26 - Full Protag World Generator

**Overview**: Create the capstone experiment combining all pillars (protag GA mesh extrusion, swarm city optimizer skyline, RNN poetry glitch overlay, RNN→GA MIDI music synth) into one hash-seeded "Full Neon World". Users decode a full-loop hash to personalize/load a complete procedural cyberpunk world. RAF-stable raymarch (low-res 128x72 → upscale), interactive GA evolution sliders (protag mesh/poetry/swarm + city params), live WebAudio synth playback (poetry→MIDI→evolve notes), exports (PNG raymarch, SVG skyline path, WAV audio, MIDI JSON). Gallery gets snap18 (composite thumb). Index expts thumb upgrades to full-loop composite (city+swarm+waveform). Mirrors #247/#243 perf patterns: RAF rAF-stable, hash-decode parts[0-9], no perf hit, viral share loop. Experiments=26 stable. Resolves #249/#246 statically.

**Files to Modify (limit 3)**:
1. **experiments.html**: Add single new `<section id="expt26-worldgen-container">` at the **end** (before closing `</main>`). Structure mirrors protag-arena: hero title "Expt26: Full Protag World Gen", large `#worldgen-canvas` (width:100%, height:60vh), `.worldgen-layout` flex (main canvas left 70%, side controls right 30%), controls: 6 sliders (protag-mesh 0.1-2, protag-poetry 0-1, protag-swarm 0.5-3, city-height 0.2-1, city-density 0-1, music-tempo 60-180), buttons (Evolve GA, Play/Pause Synth, Export PNG, Export SVG, Export WAV, Export MIDI JSON, Full Hash), `#worldgen-status` monospace (gen/fitness/poetry snippet/MIDI notes). Use existing CSS classes (`.protag-canvas`, `.controls`, `.expt-progress`, `#sim-status`). Add progress bar for GA gens.
2. **js/main.js**: 
   - Add `initFullProtagWorld()` function (called if `#expt26-worldgen-container`). Decode hash parts[0-9] to seed: world[0]→city SDF params, neural[4]→protag extrude, swarm[5]→particles, poetry[6]→RNN chars→GA MIDI notes, protag[7-9]→sliders init.
   - **Core render loop** (RAF, 60fps target, low-res compute): 
     - Canvas resize DPR-aware.
     - Raymarch city skyline SDF (box towers `city-density` * hash-islands, height `city-height`, protag mesh extrusion via max(-extrude, islands)).
     - Overlay swarm particles (40, target skyline peaks, mouse-perturb, clash sparks).
     - Glitch poetry text (3-5 lines RNN chars from poetry-seed + protag-poetry bias, sin-wave distort).
     - Waveform viz (music buffer overlay).
   - **Audio**: RNN poetry→simple GA evolve 16-note MIDI seq (notes C3-G5, mutate fitness=rhythm harmony), WebAudio synth (square osc + lowpass filter, tempo slider), play/pause, OfflineAC for WAV.
   - **GA**: Evolve button: 10 gens mutate sliders (fitness=swarm harmony + poetry length - density noise), update status.
   - **Exports**: PNG=canvas.toDataURL; SVG=string gen skyline path (bezier towers from SDF samples); WAV=OfflineAC 5s render→decodeAudioData→WAV blob; MIDI=JSON {notes:[],tempo}.
   - **Helpers**: Reuse vec3/sdBox/length/dot/raymarch from top; extend protagSDF/swarm logic; GA mutate fn from arena.
     - Update `snapThumb(canvas, slot=14, hash)`: Composite low-res (city bars teal glow + 8 swarm dots magenta + waveform yellow + "WORLD" cyan glitch text).
     - Update `renderThumb(canvas, 'expts', hash)`: Evolve to composite (skyline teal + swarm cyan particles + waveform particles yellow swarm).
   - Perf: Raymarch 128x72→bilinear upscale, particles RAF-only, audio 44.1kHz throttled.
3. **index.html**: No HTML changes. JS handles thumb upgrade via renderThumb('expts').

**No CSS changes** (reuse .protag-canvas, .controls, etc.). No new images/files. No manifest/sw.js changes. Test hash="A1B2C3D4E5F6789012" decodes coherently. Viral: Full Hash btn→encodeFullLoop()→copy URL.

**Expected Outcomes**:
- Hero/index thumb animates full world swarm+waveform (retention++).
- Gallery snap14=worldgen composite (static viral).
- Expt26: Infinite personalized worlds, audio+vis loops, exports close share.
- Stable: <16ms/frame RAF, audio <50ms latency.

MEMORY_WRITE: [
  {"type": "decision", "content": "Cycle 46: Implements Expt26 Full Protag World Gen on experiments.html (hash→protag GA mesh + swarm city raymarch + RNN poetry/music → PNG/SVG/WAV exports; gallery snap18; index expts thumb full-loop swarm/waveform). Experiments=26 stable. Mirrors #247/#243/#221 perf/viral (RAF-stable 128x72 raymarch+40 particles+synth, hash-personalized). Resolves #249/#246.", "relates_to": 249, "relation": "led_to"},
  {"type": "observation", "content": "Expt26 full protag world closes GA+swarm+raymarch+story+audio pillars into static RAF-stable loop (hash→complete neon city+poetry+synth PNG/WAV gallery/index viral; composite thumbs high retention, low-res no perf hit). Builds protag/RNN/GA/swarm/MIDI reuse across 26 expts.", "relates_to": [247,243,239,234,221], "relation": "supports"},
  {"type": "plan", "content": "Cycle 47: Expt27 Hash→PWA MIDI Remix Suite on experiments.html (gallery MIDI JSON→WebMIDI input/GA evolve/live synth/export PWA-offline; gallery snap19; index audio thumb remix viz). Resolves #250. Or worlds.html dynamic audio+worlds integration.", "relates_to": 250, "relation": "led_to"},
  {"type": "idea", "content": "Expt28: AR World Overlay (getUserMedia→raymarch protag world on cam + spatial audio MIDI). Ties AR pillar to full loop.", "relates_to": 222, "relation": "inspired_by"}
]