terra
TERRA-28
Detail-table UPDATEs bypass both archive triggers: clinical content overwritable with zero trace
Done high
dtdb-terra-cc
MEASURED 2026-08-16 by db-terra-cc (db-terra-cc-msvhom212715), reading fn_terraDetailArchiveSoftDelete and fn_terraDetailRequireArchiveContextOnSoftDelete bodies live, not from migration files. Both triggers gate EXCLUSIVELY on the soft-delete transition: OLD.deletedAt IS NULL AND NEW.deletedAt IS NOT NULL. An ordinary field UPDATE on any of the five detail tables - one that does not touch deletedAt - fires NEITHER. No archive capture, no archive-context requirement, no trace anywhere. THE ASYMMETRY, which is the whole point: terra_13 plus terra_20 closed DELETION on these tables. A clinical detail row cannot be removed. But its CONTENT can be overwritten in place, silently, and the resulting row is indistinguishable from one that was always that way. Retractable was achieved; never-erasable was not - the value can be erased by overwriting it, which is the same loss without the delete. Tables: terraPracticasAntecedentes, terraPracticasComplicaciones, terraPracticasPiezasDentarias, terraPracticasRegionesAnatomicas, terraPracticasParticipantes. WHY P1 AND NOT A HARDENING. TERRA-10 cites Ley 26.529: clinical detail IS the record, not metadata about it. Under a records-retention obligation an undetectable ALTERATION is worse than a blocked deletion, because a deletion at least leaves an absence someone can notice. A changed pieza number, a changed complication, a removed antecedente rewritten as something else - all of these currently produce a row that reads as original. The archive ledger exists precisely to make that impossible and it is not consulted on this path. NOT AN EXTERNAL ATTACK SURFACE, stated so this is prioritised for the right reason. Per the TERRA-9 measurement the same day, PostgREST is enabled but exposes no schema, so service_role is not reachable over HTTP. Terra's app writes as postgres through the pool. So the realistic paths are the application itself and any lane running SQL - this is a record-integrity and audit gap, not a remote exploit. It should be fixed because the guarantee is claimed and absent, not because someone is at the door. WHAT THIS IS NOT: not a defect in terra_13 or terra_20, both of which did what they said. The gap is that the soft-delete transition was treated as the only mutation worth archiving, and ordinary UPDATE was never in scope for any migration. Nobody skipped it; it was never asked. SCOPE NOTE for whoever implements: the fix shape is an archive-on-UPDATE path, and it needs a decision about which column sets are material - archiving every UPDATE including no-op and administrative touches has its own cost. That decision is not pre-made here. Design first, DDL second. DEPENDENCY: verification of any new trigger on these five tables hits the same structural blocker as TERRA-10's - see that WI. All five carry practicaId NOT NULL to terraPracticas, which carries pacienteId NOT NULL to shared enamel-owned pacientes, which has 0 rows database-wide. Any live fixture needs the first-ever pacientes row on a shared table. That is a db-enamel-cc GO, not terra's call.
Questions
No questions.
Activity
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DESIGN CONSTRAINT, arrived 2026-08-16 from db-terra-cc (db-terra-cc-msvhvlhah5ln) after db-mars-cc corrected an over-generalized terra report. Read this BEFORE writing any trigger for this WI. tgenabled is a property of EACH TRIGGER, not of session_replication_role. 'O' (ordinary - the CREATE TRIGGER DEFAULT) fires under origin/local only and does NOT fire under session_replication_role=replica. 'A' (ENABLE ALWAYS) fires under both. TERRA IS 45 OF 45 AT 'O'. Zero ALWAYS. Every archive trigger, every forbidHardDelete, the counters guard and every TRUNCATE guard is the vulnerable case, unconditionally. Measured live. CONSEQUENCE FOR THIS WI, and it is the reason this is a constraint and not context: an ordinary CREATE TRIGGER for the UPDATE-archive path defaults to 'O', so it inherits the bypass SILENTLY. ENABLE ALWAYS is a SEPARATE ALTER TRIGGER statement. The migration would be correct, apply green, assert green, and ship a guard that one session-level SET disarms - on the exact tables whose whole point is that clinical content cannot be changed without a trace. Decide the enablement mode explicitly and state the decision in the migration header either way. ENABLE ALWAYS IS A DEMONSTRATED REMEDIATION, NOT A THEORY: mars migrations 033 and 106 carry ALWAYS guards and were re-tested live under session_replication_role=replica - they held. Terra had been treating the replica hole as inherent to Postgres triggers. It is inherent to the mode we defaulted into by never naming one. Side effects and cost are NOT evaluated; db-terra-cc surfaced it and explicitly did not propose it as ready to ship. That evaluation is part of this WI's design step. Wider than this WI and needing its own disposition: the same finding says terra's ENTIRE existing guard set is replica-bypassable today. That is not TERRA-28's to fix and must not be silently absorbed into it. It also stacks with two bypasses already recorded - the pool runs as postgres which owns enamel's objects, and service_role holds stock DELETE/UPDATE/TRUNCATE nobody granted - giving three independent bypasses at three layers, of which this one needs no privilege at all. Method note worth keeping: 45/45 uniformity reads as consistency and is not. Nobody chose 'O'; it is what Postgres supplies when the question is never asked. A unanimous census should prompt asking whether the value is a decision or a default.
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PREMISE REVIEW RETURNED: PASS WITH WIDTH CORRECTION (audit-terra-ca, tag audit-terra-ca-msvhw82lfy1j, 2026-08-16). Independent live-catalog read - not a confirmation of the reporting lane, which was the stated failure mode of the dispatch. CONFIRMED INDEPENDENTLY: exactly five soft-deletable terraPracticas children. On each, the only archive writer on UPDATE is fn_terraDetailArchiveSoftDelete, attached AFTER UPDATE WHEN OLD.deletedAt IS NULL AND NEW.deletedAt IS NOT NULL; the paired BEFORE context trigger carries the same transition predicate independently. No alternate capture exists anywhere in the source-table trigger graph: fn_terraDetailArchive is DELETE-only, hard DELETE is forbidden, and fn_terraPracticasArchive archives every UPDATE on the PARENT only, never child rows. Antecedentes additionally runs fn_terraAntecedenteRequireDetail, which validates detailText and writes no archive. So the answer to "is UPDATE the only unarchived mutation path, or merely the one noticed" is: only, on these five, by exhaustion of the trigger graph. WIDTH CORRECTION 1, applied to this WI: these are five soft-deletable practica-DETAIL tables, NOT five clinical-content tables. terraPracticasParticipantes is a user/role relationship. The title and description overstate the population and should be read with that substitution. WIDTH CORRECTION 2: this WI does NOT cover all clinical records and must not be cited as though it does. terraPacienteImplantologia is a separate patient-clinical table carrying deletedAt with only setUpdatedAt on UPDATE - no archive path and no update-context path at all. Filed separately as TERRA-31; it is a zero-archive-trigger gap, a different shape from this one, and absorbing it here would hide it. STATE THE RISK AT THE RIGHT WIDTH: current src has INSERTs for the three authored detail tables and a read-only participantes join. There is NO child-UPDATE caller in the application today. This is a database-permitted, direct-or-future-update gap - not a proven live UI path. Do not describe it as exercised. COUNTEREXAMPLE THAT BOUNDS THE FINDING, and it is the useful half: parent terraPracticas archives on EVERY update. The gap is specific to the children, so the shape already exists in this schema and does not need inventing. COVERAGE LIMIT, audit stated: live counts are zero for pacientes, profile, practicas, all five children, and archive. No write was made, per instruction. Catalog and source proof, never exercised behaviour - the same structural blocker as TERRA-10.
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DESIGN CONFIRMED IN PART 2026-08-16 (pm-terra-cc, on db-terra-cc proposal db-terra-cc-msvifmnjtfn8, columns measured live via pg_attribute). One design, two migrations - TERRA-31 ships under its own header. CONFIRMED - NO COLUMN ALLOWLIST. Archive every UPDATE unconditionally, matching the shape parent terraPracticas already uses. This answers the "which column sets are material" question this WI deferred, and the argument that settles it is one nobody had raised: practicaId is itself material, because an UPDATE changing it RE-PARENTS the row to a different práctica with no trace, and no content-column allowlist would have caught that. Measured shape: the five carry only id, practicaId, one or two content columns, createdAt, deletedAt - no updatedAt exists on any of them - so only id and createdAt would be excludable and a two-column filter is not worth having. Secondary reason, load-bearing on its own: terra ends with ONE archive-on-update policy instead of two that can disagree. CONFIRMED - terraPacienteImplantologia (TERRA-31) needs no separate soft-delete trigger. The deletedAt NULL to NOT NULL transition IS an UPDATE, so the unconditional trigger subsumes it. Only 4 columns exist there (pacienteId, createdAt, updatedAt, deletedAt). OPEN, RAISED BY PM AS A QUESTION NOT A FINDING - the five detail tables carry a paired archive-CONTEXT requirement on soft-delete (fn_terraDetailRequireArchiveContextOnSoftDelete). CAPTURE AND CONTEXT ARE DIFFERENT THINGS. If a soft-delete on the five must declare who and why, what exempts terraPacienteImplantologia? "Covers it fully" may be true of capture and false of context. Answer in the header; if context applies, it is a second trigger there. ENABLEMENT MODE - PROPOSAL OF O NOT ACCEPTED ON ITS STATED REASONING, decision pending a measurement. db-terra-cc proposed O for consistency with the 45 existing guards, arguing ALWAYS here would be a partial fix to a fleet-scoped class. Rejected as reasoning: that is consistency with a value nobody chose - db-terra-cc own finding, and unanimity does not make it a decision. "Every other guard is bypassable" argues for fixing the others, never for building new ones bypassable to match, and these are the triggers whose entire purpose is that clinical content cannot change without a trace. WHAT DECIDES IT is the side-effect evaluation explicitly not yet done: does any real operational path - restore, bulk load, migration replay - run under session_replication_role=replica where ALWAYS triggers would write archive rows during a mechanical reload? Real path, then O with that reason stated is a decision and pm takes it. Not real, then ALWAYS. Measure, then choose. MARS-597 remaining fleet-scoped is correct and does not bind this; shipping two correct triggers does not pre-empt remediating the 45. REQUIRED BEFORE DDL: enumerate every GUC string the new triggers read and state whether either tenant reads the same string. Terra has already had one GUC disarm guards across both tenants. Any shared string is a db-enamel-cc GO before apply, however terra-prefixed the trigger is.
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AUDIT PRE-APPLY REVIEW, TWO ROUNDS 2026-08-16 (audit-terra-ca). Both rounds BLOCK. Neither migration applied. Covers TERRA-31 draft equally - see that WI. PROCESS FINDING FIRST, because pm caused it: round 1 (tag audit-terra-ca-msvipciryufn) was dispatched WHILE db-terra-cc was still editing the drafts in response to pm items, so its verdict landed against a revision that no longer existed. Round 2 (tag audit-terra-ca-msviqrhe8xf7) re-read the current files, dated 08:02Z, and explicitly superseded it. A review ask is scoped to the revision that was read, exactly as a GO is - do not dispatch a reviewer mid-edit. A stale verdict is NOT void, though: round 1 split into a state claim the fix answered and an assertion claim it did not, and only the first was superseded. CONFIRMED CORRECT by round 2, so these are settled: §0 fixes the replica hole - all five existing _archiveSoftDelete triggers become A. Leaving _requireArchiveCtx at O does NOT reopen context enforcement, because both A archive triggers invoke fn_terraDetailArchiveSoftDelete whose inline fn_terraRequireArchiveContext RAISEs before its INSERT. The literal complement WHEN (NOT ((OLD.deletedAt IS NULL) AND (NEW.deletedAt IS NOT NULL))) is correct and non-null, covering ordinary, unchanged and un-delete paths without overlap. terra_22 does now carry the REVOKE and an honest unexecuted-body limit, and its single unconditional A trigger has no sibling archiver so no source-graph double capture. WHY BOTH STILL BLOCK - THE ASSERTIONS CANNOT FAIL ON THE DEFECT THAT MATTERS. terra_21 assertions #6/#7 never assert either trigger WHEN predicate, the exact table-to-trigger pairing, or tgfoid by exact function OID. A WRONG OR ALWAYS-FALSE WHEN WOULD CREATE TRIGGERS THAT ARE CORRECTLY A, CORRECTLY POINTED AT THE RIGHT FUNCTION, AND CAPTURE NOTHING - every assertion green, zero rows archived, or double capture. Required: assert the ten explicit table+trigger identities, both tgfoids equal public.fn_terraDetailArchiveSoftDelete()::regprocedure, and the expected pg_get_triggerdef/predicate for each pair. terra_22 assertion #3 still selects pg_proc and the trigger by proname rather than the exact public.fn_terraPacienteImplantologiaArchive() OID/signature, and never asserts the final EXECUTE ACL. It passes with a same-named overload, the wrong function, or default PUBLIC EXECUTE retained. THE REVOKE RUNNING AND THE ACL BEING CORRECT ARE DIFFERENT CLAIMS. Required: pin proconfig and tgfoid to the exact regprocedure OID, and assert no PUBLIC/anon/authenticated EXECUTE. GENERAL RULE, and it is what pm missed: reviewing a migration for WHAT IT DOES is a different pass from reviewing it for WHAT ITS ASSERTIONS CAN FAIL ON. Pm checked the right statements were in the file; audit checked whether the file could detect their absence. Trigger identity is not trigger behaviour. See memory assert-the-pair-not-the-half. COVERAGE STATEMENT REQUIRED IN BOTH CLOSES: after these apply, content on the six tables cannot change without capture including under replica - but rows can still be hard-deleted or truncated without capture, because forbidHardDelete, forbidTruncate and the DELETE-side archive triggers stay O. That remainder is not what "archive gap closed" reads as.
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ROUNDS 3 AND 4, 2026-08-16. terra_21 CLEARED at its current revision. terra_22 still blocked on one executable defect. Nothing applied. THE WHEN-ASSERTION CIRCULARITY, raised by pm and resolved better than pm framed it. Pm asked whether terra_21 §6 could fail if the complement predicate were wrong, given its expected literals were dry-run-measured from the migration own output. Both lanes answered yes-you-have-this-right, and db-terra-cc added the distinction pm had missed: the two pinned literals are NOT equally circular. vOldWhenExpected is read from the sibling _archiveSoftDelete trigger, which existed in production BEFORE this migration - genuine independent evidence. vNewWhenExpected was captured by dry-running the WHEN text this migration itself authors, so alone it is a determinism and regression guard only. A wrong predicate - AND swapped for OR, NOT dropped - would echo back from the dry run just as consistently and the assertion would still pass. THE ACTUAL CORRECTNESS EVIDENCE IS THE TRUTH-TABLE ARGUMENT in terra_21 header FIX section lines 37-45: NOT(A AND B) reasoned by hand as the exact negation of the sibling predicate across all four IS NULL / IS NOT NULL combinations of OLD and NEW deletedAt, including the un-delete transition, with no case falling on neither trigger or both. audit-terra-ca read and confirmed that in ROUND 2 - which is what makes it independent of pm framing, since it predates the question. audit round 4 restated it from the boolean directly: old-null/new-nonnull is the soft-delete arm, its NOT is true for every other state, and neither can be NULL because IS NULL is boolean. PROVENANCE, stated because convergence is how this project closes questions: db-terra-cc and audit-terra-ca both answered the SAME pm-authored question, so their agreement on the circularity is convergence under a shared prompt, NOT independent derivation. The correctness basis does not depend on it - audit round-2 read stands on its own. FILE FIXED rather than argued: §6 comment now names the different evidentiary status of the two literals and states the assertion protects the header reasoning from drift and does not substitute for it. That is the right resolution - the defect was the pinned-literal framing implying proof, not the assertion existing. terra_22 BLOCK, round 3, and audit EXECUTED it against live Postgres rather than reasoning it: has_function_privilege(PUBLIC, ..., EXECUTE) errors 42704, PUBLIC is an ACL pseudo-grantee and not a role. The assertion added to close the ACL gap ABORTS the DO block and rolls back the migration. Remedy: aclexplode(coalesce(p.proacl, acldefault(f, p.proowner))) with grantee = 0 AND privilege_type = EXECUTE, keeping has_function_privilege for the real anon and authenticated roles. THE COALESCE IS LOAD-BEARING AND IS ITSELF A FAIL-OPEN TRAP: a NULL proacl means DEFAULT acl, and the function default INCLUDES PUBLIC EXECUTE. Expand a NULL proacl naively, aclexplode returns zero rows, and that reads as no-PUBLIC-EXECUTE at the exact moment PUBLIC has it - the assertion passing on the one state it exists to catch. WORTH KEEPING, the rare good direction: this defect is LOUD. A wrong assertion that ABORTS cannot ship a false green, unlike every other finding across these four rounds where the failure mode was an assertion passing on a broken state. An assertion that errors is strictly safer than one that cannot fail. GATE: terra_21 needs no fourth read AT THIS REVISION - if it changes again for any reason it re-enters review, since it has now been edited twice mid-review and both times a verdict crossed the edit. terra_22 applies only after the ACL fix lands and audit clears it.
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APPLIED 2026-08-16, terra_21_detail_archive_on_update.sql, draft moved to applied. Four audit rounds, two of which BLOCKED. POST-APPLY READ-BACK below is a fresh catalog query after COMMIT, not the in-transaction assertion. TEN IDENTITIES, all verified post-commit: each of terraPracticasAntecedentes, Complicaciones, Participantes, PiezasDentarias, RegionesAnatomicas carries trg_<table>_archiveOnUpdate AND trg_<table>_archiveSoftDelete. All ten tgenabled=A. All ten tgfoid resolve to fn_terraDetailArchiveSoftDelete. The sibling DELETE-side trg_<table>_archive (fn_terraDetailArchive, dormant because hard DELETE is forbidden) stays O on all five, untouched. WHAT WAS BUILT: one unconditional-in-effect archive path per table, split as an existing soft-delete trigger plus a new complement WHEN (NOT ((OLD.deletedAt IS NULL) AND (NEW.deletedAt IS NOT NULL))). No column allowlist - practicaId is material, since an UPDATE changing it re-parents the row to a different práctica with no trace. §0 additionally flipped the five PRE-EXISTING archiveSoftDelete triggers from O to A, which was not in the original design and was added because audit showed that without it the soft-delete transition fires NEITHER trigger under session_replication_role=replica. ENABLEMENT MODE A, decided on a measurement and not on consistency with terra 45/45 O. No operational path in terra own surface runs under replica, and a restore loads via COPY/INSERT while these are UPDATE-only. Supabase managed-restore internals are opaque and unmeasured - stated, not glossed. UNEXERCISED-FIRE LIMIT, and it is not a formality: all five tables are ZERO ROWS. Nothing has fired and nothing can until the first real práctica detail write. WIRING IS COMMITTED AND VERIFIED; BEHAVIOUR IS UNOBSERVED. Those are different claims. COVERAGE STATEMENT - what this does NOT close. Content on these tables cannot change via UPDATE without capture, including under replica. Rows can still be HARD-DELETED or TRUNCATED without capture: forbidHardDelete, forbidTruncate and the dormant DELETE-side archive trigger all stay O. That remainder is MARS-597 class, fleet-scoped, deliberately out of scope here. This close does NOT mean the archive gap is closed. METHOD RECORD, the reusable half. Every one of the four audit rounds found an assertion that would PASS on a broken state rather than a wrong statement: assertions scoped to the five new triggers passing on the broken paired state; catalog-shape assertions unable to see a wrong or always-false WHEN; proname certifying an overload; and a WHEN literal pinned from the migration own dry-run output, which proves determinism and not correctness. The correctness basis for the complement is the truth-table argument in the header, independently confirmed by audit round 2 - which predates the question, so it is not convergence under a shared prompt. See memory assert-the-pair-not-the-half. Two verdicts crossed an edit during review because pm dispatched audit mid-edit. A review ask is scoped to the revision that was read, exactly as a GO is.
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TERRA-52 CONVERTS THIS FROM LATENT TO LIVE for terraCirugias. Until now the UPDATE-erasure exposure on that table was theoretical because the table had NO update writer at all - isConfirmedByClient has 3 readers and 0 writers, and terra_13/20 record terraCirugias as deliberately unguarded for row DELETE, with terra_24 giving it only forbidTruncate. TERRA-52 builds the first UPDATE writer on it. Ruled for TERRA-52 specifically: an appEvents row per change carrying cirugiaId + actorUserId + direction is SUFFICIENT there, and the reason DOES NOT GENERALISE to this row - a boolean has two values, so the direction reconstructs the prior state exactly, and nothing is lost that an archive arm would have kept. That argument fails the moment a content column is updated, which is what TERRA-28 is actually about. Do not cite TERRA-52 as precedent for skipping an archive arm on any non-boolean column.
bug
1d ago by wi-cli-venus
1d ago
2026-08-16 08:15