tiny-gpu/arch.md

#	Artifact	What it is	Made by
1	README.md	Design intent — architecture, ISA, thread model	Human (author)
2	src/*.sv	SystemVerilog RTL — the actual design	Human (author)
3	build/rtl_v/*.v	Plain Verilog, same design	sv2v
4	docs/schematics/*.svg	RTL schematics — adders, muxes, registers	yosys + netlistsvg
5	(not kept)	Gate-level netlist — mapped to sky130 cells	yosys synthesis
6	gds/*/gpu.gds	Physical layout — polygons on 17 mask layers	OpenLane place & route
7	3D view in browser	glTF/GLB mesh, layers extruded to real heights	GDS2glTF (in the web viewer)
Side branch off #3, for testing rather than building:

#	Artifact	What it is	Made by
3a	build/sim.vvp	Compiled simulation binary	iverilog
3b	test/ results	Kernel tests (matadd, matmul) run against the sim	cocotb