4fd56a12fd
Records where each number came from, which are derived rather than measured, and which were corrected by hand against reality. Covers the eight sources and what each does and does not give; the kilometre datum and why it is not official KP; the two methods used to position structures (sequence alignment on length, watercourse crossings as anchors) and where each is unreliable; the 250 m reverse-geocode sweep that produces the district bands. Two sections matter most for anyone picking this up later. "Human in the loop" lists every correction that came from signs, satellite imagery or knowledge held by no dataset — the 十三里 plate, the ホルカクルキ Ainu gloss, モトツ橋 as a sheltered span, the 登川 community shift, and the ten entries found by hand that OpenStreetMap lacks entirely. "Errors found and fixed" records the pipeline's own failure modes, including the duplicate-name coordinate bug and the 穂高トンネル 1991 m / 1991 collision. Named 274-method.md for now; intended to become 274-dev.md once the current roster file is renamed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01S6MpcBisZYhX45oDGRRJoz
WIP songs
Unless explicitly noticed in the file, the 'WIP' status applies to the whole song as a musical capsule.
This means however it might not seem like, a song has its lyrics completed if the file doesn't say otherwise. Yes.