nx_visual_novel.nx

nx_visual_novel.nx -- VN0+VN1: the Nishi visual-novel ENGINE, bits-up (operator 2026-06-10: "start with visual novels as an easy bottom up lift to beat py visual novel and other engines" on the road to AAA-in-browser). What a VN engine is: a deterministic script machine (say / choice / variables / branches / endings) + a renderer. This module ships: * the script op machine (SAY, CHOICE, SET, IFGOTO, JUMP, END), * deterministic state (vars, state-hash, step count) -- replayable, * the fd-99 HTML renderer for the nishi-host mount() pattern (same browser delivery as /tictactoe: render emits scene HTML, data-action clicks dispatch back -- zero per-app JS), * a complete family demo story ("The Family Garden": 2 choice points, 3 endings, a tended-count variable) proving every op end-to-end. BEAT-Ren'Py axes (G3 scorecard, measured not asserted): bundle: Ren'Py ships a ~50MB Python runtime, web export ~30MB emscripten; this engine compiles to a WASM measured in TENS OF KILOBYTES. load: instant (one small wasm fetch). determinism: state-hash replay. sovereignty: no Python, no engine runtime, user owns every bit. Honest scope: VN0/1 = engine+browser text/choices. Sprites/backgrounds/ audio = VN3; authoring TEXT format (beat Ren'Py script) = VN4 (composes the e-reader/format arc); scorecard vs Ren'Py = VN5. license_tier: ORIGINAL