The structure it will open into

The shape is already specified and the build already follows half of it: one index, one folder per pack, a pack.json manifest with hashes, and compiled files rather than one file per record — because the published performance cliffs punish thousands of small objects, and a cold open of 2,375 objects was measured at over three minutes.

  /dev-packs/
    index.html          this page — the list of packs, with date, count and state
    pack.json           the manifest, machine-readable      ← published today
    llms.txt            per the estate convention
    llms-full.txt       the quotation set, the gaps, the open questions
    /store/             this pack — held

Two things are already decided and neither is a formatting question. A published pack is frozen, not maintained: a dated document with hashes is a promise about a moment, and a pack that gets quietly updated breaks that promise — so new versions are added beside, never over. And whether packs from other days and other subjects follow this one is a separate decision with a much larger surface, not an extension of this instruction.