feat(app-showcase): ADR-0056 declarative private-OWD scenario + proof#2062
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…(ADR-0056) First execution increment of ADR-0056: demonstrate the declarative owner-private capability on the real showcase. `showcase_private_note` declares `sharingModel: 'private'` + an `owner_id` field and NOTHING else — no RLS, no predicate, no permission-set rule. The engine derives owner scoping from the OWD baseline + auto-stamped owner_id. Proof (`showcase-private-owd.dogfood.test.ts`, 5/5, real HTTP): two plain sign-ups each create notes; each lists only their own, cannot read/write another owner's by id, can write their own — owner_id auto-stamped, zero authored RLS. Full dogfood 11 files / 86 tests; showcase units 20. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XVdnfUAx85amkerym26vdx
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Sibling of the private-note scenario: showcase_announcement declares sharingModel: 'read' (everyone reads, only owner edits) — no RLS authored. Proof showcase-public-read-owd (3 tests) shows cross-owner READ allowed but cross-owner WRITE denied, contrasting the private note's hidden rows. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XVdnfUAx85amkerym26vdx
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June 20, 2026 07:26
This was referenced Jun 20, 2026
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What
First execution increment of ADR-0056 — demonstrate the headline declarative owner-private capability on the real showcase, with an end-to-end proof.
showcase_private_notedeclaressharingModel: 'private'+ anowner_idfield and nothing else — no RLS policy, no owner predicate, no permission-set rule. The engine derives owner scoping from the OWD baseline + the auto-stampedowner_id. This is the declarative counterpart to the invoice's hand-writtenowner = current_user.emailescape-hatch (PR #2054): for plain "my records are mine" ownership, an object declares one word and the platform enforces it.Proof (real HTTP stack)
showcase-private-owd.dogfood.test.ts— 5/5:owner_idis auto-stamped (no manual assignment, no predicate)Full dogfood 11 files / 86 tests; showcase units 20/20; showcase build clean.
Where this sits in ADR-0056
This is the demonstrable slice of the OWD work (the "declare
private, get isolation" thesis). It does not yet change any existing behavior — it adds a new object + proof. Remaining ADR-0056 decisions (D1public_read/public_read_writeenforcement + reject-unknown, D2 anonymous default-deny, D4 compiler authoring-validation, D7 default Profile, D8 experimental-tagging, D10 conformance matrix) follow as separate phased PRs, each with its own scenario + proof, per the ADR's "ratchet, not retrofit" mandate.🤖 Generated with Claude Code
Generated by Claude Code