onlyworlds 0.44.1

• Schema repinned to schema-dist v0.33.0-dist.56 (from dist.55; same canonical 00.33.00, no schema file moved). The one serial settles five readings of profiles/spine.md that the first reader found ambiguous, and the fixture grows to 40 cases.
• SpineRead.dropped entries are {"key", "value"} dicts (were "<key>: <JSON>" strings), the value exactly as the element held it, a copy. The page now compares dropped as JSON values, never as text, because Python and JavaScript write JSON differently. A caller that read the strings changes; a SpineRead that dropped something is no longer hashable.
• A non-string x_spine_truth or x_spine_probe is named in dropped (it was left out silently). The order is the page's: address, truth, access, status, layer, audience, depends_on, probe, verified.
• Already so in 0.44.0, and now on the page: probe verbs are syntax (case-sensitive, single spaces), verified.at must be a real calendar day, and an empty depends_on is stated.
• Tests: the fixture is compared as canonical JSON, because Python's == holds True == 1; a dropped boolean stays a boolean; the page's key order; the probe form's syntax. Two mutants watched failing (a boolean written as 1, a non-string probe not named).