Patch notes

15.20.12

Added canonical item visual, food, and disease registries; wired food decay/visual helpers and mystery-drug disease sampling to registry data.
Generated the tool palette from TOOL_CATEGORIES at runtime and removed duplicated category markup from index.html.
Added compact family-tree personality tags and a selected-Tarinai recent-change section for personality, damage, item-effect, disease, and ant-carry causes.
Added InputModeManager for touch-first mobile classification and WeatherSystem for weather transitions/rain-water spawning.
Added central domain events for placement, eating, decay, effects, diseases, damage, death, birth, fights, ants, weather, and rain item drops.
Moved item-effect modifiers, active summaries, apply/tick behavior callbacks, and food interest class queries into registries.
Moved canonical sound gains, sample paths, categories, cooldowns, and ID category mapping out of audio.js into sound_pack.js.
Added named ant ecology extension hooks/comments without changing ant balance.
Bumped cache/version references to 15.20.12; documented the new source-of-truth rules.

Updated documentation after inspecting the current game surface: field choices, startup flow, tool groups, chart/family/debug surfaces, localStorage settings, and validation fallback when Node is unavailable.
Removed unused css/styles.css shim and no-op js/ui_family.js loader entry; refactored duplicate world initialization and allocation-heavy live-count paths.
Removed item-effect speech bubbles: ドン, ぐるる, すっきり, Hg xN, ちまっ, でかっ, へにゃ, ムキッ, and mm....
Reorganized the tool palette into color-coded collapsible groups: operation, food/water/grass, medicine/effects, habitat/living things, hazards/obstacles.
Changed the tool UI ball icon to a soccer-ball emoji preview.
Changed time phases: morning 05:00, day 10:00, evening 17:00, night 20:00.
Increased genkotsu knockback for Tarinai and ants; genkotsu now also blasts zunchi away.
Genkotsu damage now adds fear/stress and decreases Tarinai openness.
Rain weather overlay is now diagonal streaks. Fallen rain-water items, zunda juice, and mercury remain horizontal oval item sprites.
Tightened mobile operation UI visibility to smartphone-class compact touch devices.
Sleep-disease Tarinai can be moved by ant hauling without snapping back to their sleep anchor.

Consolidated documentation into dense English files; left docs/prompt.txt untouched.
Restored rain, revised water/zunda/mercury item sprites, added zunchi-slave head zunchi, fight win rate, fight defeat chance, and post-wake lock.
Earlier patches added parameter items, persistent item effects, WebP assets, sound categories, push notifications, ant systems, family tree UI, performance manager, event bus, manifest generation, CSS split, and large-file JS split.