Three things that were all one shape: a value known in one half of the system and asked for in the other. `?nolabel=true` was read by boot, which reads `location`, and ignored by the piece, which reads `parsed.search` — and `parse` is handed the piece slug alone, the query having been split off long before. So the corner label kept drawing inside Slab's preview cards, whose entire request is to be rid of it. Boot now hands the slug the three flags the piece layer actually reads, taken from the already-sanitised set so an auth `code` in the same query has no way through. `socket.mjs` parsed the `code` channel's content unconditionally, while the `reload` and `left` branches either side of it both test for an object first. Parsing an object stringifies it to "[object Object]", which is precisely the `Unexpected identifier "object"` that fired on every Easel save. And the marker wrote `subject: "aesthetic code"`, a name retired weeks ago, so every Easel session announced itself to the fleet under it. The preview card now loads aesthetic.computer rather than prompt.ac. The rock keeps the short name because a QR's payload is measured in bytes and eleven of them decide whether the symbol needs a bigger grid; nothing is scanning the card, so it can use the name the work lives under. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>