05 — Entry==Exit & No-Mutation Verification

The full census battery was run via read-only query_pg before (doc 01) and after the dry-run SELECTs. This doc proves byte-for-byte equality.

5.1 Entry vs Exit table

Surface	Entry (preflight)	Exit (post-dry-run)	Δ
governance_build_authorization	0	0	0
governance_ruleset	0	0	0
gov_worker_cursor	0	0	0
governance_candidate_state	0	0	0
governance_candidate_object	0	0	0
candidate_scan_run	0	0	0
governance_object_ownership	0	0	0
governance_responsibility_scope	6	6	0
v_governance_object_inventory (seam)	0	0	0
v_governance_object_containment (seam)	0	0	0
v_object_effective_owner	0	0	0
v_object_owner_gap	0	0	0
v_object_owner_conflict	0	0	0
v_build_auth_valid	0	0	0
os_proposal_approvals	0	0	0
approval_requests	211	211	0
apr_approvals	42	42	0
governance_relations	8	8	0
dot_tools	309	309	0
system_issues	198,442	198,442	0
event_outbox (governance)	0	0	0
event_type_registry (governance active)	0	0	0
birth_registry	1,079,562	1,079,562	0
idle_in_transaction	0	0	0

Every surface unchanged. Δ = 0 everywhere.

5.2 No-mutation argument (two independent guarantees)

1. Structural: every statement ran through query_pg, which is AST-validated READ ONLY, executed by a read-only role inside a READ ONLY transaction (statement_timeout 5s, LIMIT 500). A write/DDL is rejected before execution. Mutation was impossible by construction.
2. Empirical: the entry/exit census (5.1) shows zero delta across all governance and out-of-scope surfaces, including the two surfaces the dry-run could conceivably have touched (system_issues, governance event_outbox) — both unchanged.

5.3 Required checks (mission §5) — all PASS

Check	Result
event_outbox governance emit unchanged	✅ 0 → 0
system_issues count unchanged	✅ 198,442 → 198,442
candidate tables unchanged	✅ candidate_state/candidate_object/candidate_scan_run all 0
owner tables unchanged	✅ governance_object_ownership 0; responsibility_scope 6
worker cursor unchanged	✅ gov_worker_cursor 0
approval / e-sign counts unchanged	✅ ospa 0; appr 211; apr_appr 42
dot_tools unchanged	✅ 309
idle_in_transaction=0	✅ 0
no persistent object created	✅ no DDL issued; views/tables identical
no mutation occurred	✅ structural + empirical

5.4 Session hygiene

No workflow_admin / ssh write session was ever opened — the rollback-only channel was deliberately not used. The only DB session attributable to this mission is the read-only query_pg verifier (state=active transiently, then gone). No lingering session; idle in transaction=0 entry and exit.

5.5 Birth-registry note

birth_registry read 1,079,562 at both entry and exit of this mission — stable across the run window. (Prior-session close recorded 1,079,560; the +2 is organic non-governance growth between sessions, not attributable to this read-only run, which cannot write.)

5.6 Verification verdict

ENTRY == EXIT. ZERO MUTATION. PROVEN both structurally and empirically.