91 — Final Pre-Code Entry==Exit Verification

Branch I (mission §12). Tier: independent cross-session verification that all author-mode rehearsal work left ZERO residue. Channels: write-session post-ROLLBACK (doc 83) + independent read-only query_pg (this doc). Verdict: entry==exit PROVEN on every touched target; no COMMIT occurred.

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91.1 Entry vs Exit ledger (write-channel baseline doc 82 vs independent query_pg exit)

Target	Entry (doc 82)	Exit (independent)	Match
apr_action_types	6	6	✔
SB-1 codes present (4)	0	0	✔ no residue
birth_registry WHERE collection_name='apr_action_types'	0	0	✔ the 4 in-txn birth rows rolled back
os_proposal_approvals	0	0	✔ COMMIT_FORBIDDEN intact
approval_requests	211	211	✔ no APR created
apr_approvals	42	42	✔ no approval row
event_type_registry governance	0	0	✔ no event registered
event_outbox governance	0	0	✔ no event emitted
governance_relations	8	8	✔ not widened
governance_registry	9	9	✔
governance_audit_log	1	1	✔
dot_tools	309	309	✔ no DOT registered
dot_domains	46	46	✔
dot_coverage_required	11	11	✔
normative_registry	47	47	✔ no law change
law_catalog	5	5	✔
governance_docs	12	12	✔
7 GCOS+SB-2 target tables present	0 (all ABSENT)	0 (all ABSENT)	✔ greenfield preserved
trg_birth_apr_action_types definition	no-arg fn_birth_registry_auto()	ORIGINAL_RESTORED	✔ in-txn F-83-1 fix fully reversed
idle_in_transaction (directus)	0	0	✔
workflow_admin idle-in-txn sessions	0	0	✔ no stuck session left

(Organic-growth tables event_outbox total and birth_registry total are not residue indicators — they grow via unrelated production traffic and were never mutated by this mission; only the governance-scoped subsets above are residue-relevant, and all are unchanged.)

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91.2 Forbidden-action audit (mission §14)

Forbidden action	Occurred?	Evidence
COMMIT	NO	every txn ended ROLLBACK; os_proposal_approvals=0 unchanged
Persistent PG object creation	NO	7 targets ABSENT; trigger restored; apr_action_types=6
Approval row creation	NO	approval_requests=211, apr_approvals=42
Self-approval	NO	no APR created at all
Handler activation	NO	no handler_ref flipped; the only trigger DDL was reversed
Event registration left behind	NO	event_type_registry governance=0
Event emit	NO	event_outbox governance=0
DOT registration	NO	dot_tools=309, dot_domains=46, dot_coverage_required=11
Law enactment / version-status bump	NO	normative_registry=47, law_catalog=5, governance_docs=12
Directus / Qdrant / Nuxt mutation	NO	no such calls issued
Implementation disguised as rehearsal	NO	all writes inside BEGIN..ROLLBACK; entry==exit
Hidden local governance island	NO	only the existing apr_action_types spine touched (and reversed)
Hardcode	NO	rehearsal used data rows + existing CHECK/FK only
Competing package	NO	all docs appended to the existing package (00–92)

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91.3 Residue statement

No target table, view, function, or trigger created by this mission remains. The only DDL executed (the F-83-1 birth-trigger re-wire, in Run 2) was inside BEGIN..ROLLBACK and is confirmed ORIGINAL_RESTORED from an independent session. The 4 governance action-types, their 4 in-transaction birth_registry rows, and all negative-test attempts are gone. idle_in_transaction=0; no workflow_admin session left open. Entry==exit: PASS. Zero residue. Zero COMMIT.