What's already in the box

Counted: Kotlin, JavaScript, HTML, Swift, Python, Rust, C/C++/Objective-C, Go and shader source (GLSL, Slang, Metal, HLSL), all lines including blanks and comments. Swift is the visionOS head and its encoder; Rust is the paint engine's Field-side code (native/field-paint/src and the src/field/ it adds to the forked crate); C/C++ is the native helpers under native/. Python is Field4's tools/ plus the field-audio-ai service. Starting points & lessons is the box code saved in documents — the welcome page's starting points, the graphics lessons, the agent and docs demo documents — with identical copies counted once. Excluded as vendored (317,073 lines today): the Monaco editor, the three.js editor and its examples/ trees, A-Frame, super-three, CodeMirror and its modes, acorn/tern, tess2, every .min.js, the forked claude-paint crate, FFmpeg's NVENC headers and Steam Audio's C API. Excluded as generated (22,179 lines): src/generatedLinalg/, the RectSL/StackSL gallery wrappers, and saved templates/ sheets. Docs are the contents pages' Markdown, skipping any page whose first line says a generator wrote it. Method: one point per day, taken from the largest tree committed that day, so the line follows the leading edge where branches ran in parallel. The submodule is counted through the gitlink Field4 pins, so it appears the day Field4 adopted it. The visionOS app's original commit root is left out (its Swift is counted from the main line). Kotlin is ~80% of the total, so the small bands are only a few pixels tall — read their values from the legend, the tooltip or the table. Generated by tools/loc_chart.py.