Zero-page thinking on the 6502 maps to recognizing invariants and memory cost in C and C++.

Notes from six merged Copperline patches covering WasmBoard faults, filesystem caching, video timing, debugger behavior, disk labels, and M68000 disassembly.

Why I built wordlist_sort, how C++26 is used, and the practical challenges of maintaining a zero-dependency codebase.

Replacing per-block bitmap updates with bulk fill operations in FileSystem::format. On 524288 blocks, format time drops from 205 ms to 0.25 ms.