Stryker survivors on 426c956a..fa266e58, each now a behaviour test:
- schemaIdentityOf's defaults (version "<name>.v1", compatible ids holding
only the own id) are asserted for a name-only definition.
- A lister bound twice is one lister: an unowned id it lists still
resolves to it rather than being refused as ambiguous.
- A snapshot filtered by an id a binding lists returns that binding's
records, on the typed and raw paths.
- The ambiguity refusal's record key and message tail are asserted, and a
raw snapshot record's payload encoding.
- A string-named store document reads the record under its id, and a
definition's own id wins over an id it lists wherever each record sits.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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