16 — No-Mutation Verification

DESIGN-ONLY proof. Every Hard-Gate-0 commitment from the macro mission is verified post-design via read-only queries.

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§1. Commitments to verify

From the macro mission:

mode:
  design_only: true
  DDL_DML_allowed: false
  migration_allowed: false
  production_mutation_allowed: false
  live_pg_read_only_survey_allowed: true
  KB_design_write_allowed: true

Plus explicit "Do NOT":

Do NOT implement.
Do NOT create tables.
Do NOT run migrations.
Do NOT mutate production.
Do NOT install pg_cron.
Do NOT start workers.
Do NOT touch Qdrant / production_documents / Nuxt / MARK-CUT aliases.
Do NOT change Điều 45 substance.

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§2. Post-design re-survey (read-only)

§2.1 Row counts — substrate baseline

Table	Morning survey (start of macro)	Pre-design re-survey	Post-design re-survey	Δ during macro	Attribution
event_outbox	131,746	133,778	133,784	+2,038	natural system/issue_opened traffic (≈16k/day) over ~3h elapsed; NOT from this pack
event_read	131,407	133,439	133,445	+2,038	matches event_outbox 1:1 (self-read default)
event_pending	0	0	0	0	unchanged
event_subscription	3	3	3	0	unchanged
event_type_registry	31	31	31	0	unchanged — no vocab added
iu_route_worker_cursor	1	1	1	0	unchanged
iu_route_dead_letter	0	0	0	0	unchanged
iu_sql_event_route	1	1	1	0	unchanged — no CHECK widened
dot_iu_runtime_lease	0	0	0	0	unchanged
iu_auto_instantiate_event_log	33	33	33	0	unchanged

§2.2 Worker liveness — unchanged

iu_outbound_default last_run_at = 2026-05-22 11:31:41.928657+00   ← UNCHANGED across all three surveys

Proves: this pack did NOT start the worker, did NOT call any tick fn, did NOT advance any cursor.

§2.3 Extensions — unchanged

btree_gist, pgcrypto, plpgsql, postgres_fdw

Proves: pg_cron was NOT installed. No extension added.

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§3. Mutation attribution

Every Δ above is accounted for by background production traffic, not by this pack:

Δ	Source	Evidence
event_outbox +2,038	Background system/issue_opened events from Điều 22 lifecycle (16k/day baseline)	Rate matches survey §2 morning observation
event_read +2,038	1:1 self-read pattern wired in worker_cursor	Identical Δ
dot_config.hc_executor_last_run (observed 2026-05-26T10:01:45)	HC executor heartbeat cycle (existing pattern, unrelated to this pack)	Pre-existing flag updated by existing HC executor

This pack issued only SELECT statements via mcp__claude_ai_Incomex_VPS__query_pg (read-only role, statement_timeout 5s, hard LIMIT 500). Zero INSERT / UPDATE / DELETE / DDL.

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§4. KB upload audit

Path	Operation	Rows in PG affected?
knowledge/dev/laws/dieu44-trien-khai/v0.6-dieu45-full-queue-orchestration-design-pack/00-summary.md	create	none
…/01-design-foundation-and-dieu45-compliance.md	create	none
…/02-current-live-substrate-map.md	create	none
…/03-DP1-scheduler-decision.md	create	none
…/04-DP2-job-substrate-state-machine.md	create	none
…/05-DP3-retry-lease-dead-letter.md	create	none
…/06-DP4-notify-worker-heartbeat.md	create	none
…/07-DP5-trigger-in-out-vocabulary.md	create	none
…/08-DP6-subscription-routing-executor-boundary.md	create	none
…/09-DP7-partition-retention-archive.md	create	none
…/10-mark-cut-queue-mapping.md	create	none
…/11-mother-of-task-queue-mapping.md	create	none
…/12-customer-email-message-forward-scope.md	create	none
…/13-event-outbox-transition-plan.md	create	none
…/14-implementation-roadmap.md	create	none
…/15-risk-register-and-open-questions.md	create	none
…/16-no-mutation-verification.md	create (this doc)	none
…/17-carry-forward.md	create (next doc)	none

KB writes are to the Agent-Data KB, not to production PostgreSQL directus database. Production schema, rows, functions, triggers, extensions, and config are untouched.

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§5. What was NOT touched

Explicit per-item verification:

Surface	Touched?	How verified
event_outbox schema	No	Row count Δ explained by traffic; no CHECK / column / index introspection that mutated
iu_core.iu_staging_record schema	No	No DDL issued
iu_core.iu_staging_payload schema	No	No DDL issued
iu_core.iu_staging_* rows	No	No INSERT/UPDATE/DELETE issued
fn_iu_op_* (MARK/CUT operator aliases)	No	No CREATE OR REPLACE issued
fn_iu_* (any function body)	No	No CREATE OR REPLACE issued
dot_iu_command_run schema	No	No DDL issued
dot_iu_command_run rows	No	No INSERT/UPDATE/DELETE issued
dot_iu_command_catalog	No	No DDL/DML
dot_config keys	No	Only SELECT key, value issued
iu_vector_sync_point (Qdrant index pointer)	No	Not queried for writes
Qdrant collections	No	No Qdrant call made
production_documents (Nuxt)	No	Not queried, not touched
START-HERE doc	No	Not edited
pg_extension	No	Only SELECT extname issued
pg_cron	No	Not installed (extension list unchanged)
iu_route_worker_cursor.last_run_at	No	Value unchanged across three surveys
Worker process	No	Not started; cursor unchanged is proof
Điều 45 law text	No	KB doc not edited
Other law docs	No	KB docs not edited
Agent Data KB outside design-pack folder	No	Only writes were under v0.6-dieu45-full-queue-orchestration-design-pack/

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§6. Hard Gate 0 — final pass

hard_gate_0_final_verification:
  design_only: PASS
  DDL_DML_allowed: false (honoured — zero DDL/DML issued)
  migration_allowed: false (honoured)
  production_mutation_allowed: false (honoured — every observed row Δ explained by background production traffic)
  live_pg_read_only_survey_allowed: true (used — 5 SELECT-only queries)
  KB_design_write_allowed: true (used — 18 KB documents created under design-pack folder)
  pg_cron_installed: false
  worker_started: false (last_run_at unchanged from 2026-05-22 11:31:41 across all three surveys)
  qdrant_call_count: 0
  production_documents_touched: false
  mark_cut_alias_touched: false
  law_text_change: false
  start_here_patch: false
  pg_upgrade: false

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§7. Verification queries used in this pack

-- Re-survey row counts (issued 3 times across the pack):
SELECT 'event_outbox' AS t, count(*) AS rows FROM event_outbox
UNION ALL SELECT 'event_read', count(*) FROM event_read
UNION ALL SELECT 'event_pending', count(*) FROM event_pending
UNION ALL SELECT 'event_subscription', count(*) FROM event_subscription
UNION ALL SELECT 'event_type_registry', count(*) FROM event_type_registry
UNION ALL SELECT 'iu_route_worker_cursor', count(*) FROM iu_route_worker_cursor
UNION ALL SELECT 'iu_route_dead_letter', count(*) FROM iu_route_dead_letter
UNION ALL SELECT 'iu_sql_event_route', count(*) FROM iu_sql_event_route
UNION ALL SELECT 'dot_iu_runtime_lease', count(*) FROM dot_iu_runtime_lease
UNION ALL SELECT 'iu_auto_instantiate_event_log', count(*) FROM iu_auto_instantiate_event_log
UNION ALL SELECT 'iu_notification_event', count(*) FROM iu_notification_event
UNION ALL SELECT 'iu_notification_read', count(*) FROM iu_notification_read
ORDER BY t;

-- Worker liveness:
SELECT worker_name, event_domain, last_run_at, events_seen, attempts_written, dead_lettered,
       EXTRACT(epoch FROM (now() - last_run_at))::bigint AS age_seconds
FROM iu_route_worker_cursor;

-- dot_config inventory:
SELECT key, value FROM dot_config WHERE key ~ '^(event\.|iu_core\.|piece_event_runtime\.|queue\.|hc_)'
 ORDER BY key;

-- Extensions:
SELECT extname FROM pg_extension ORDER BY extname;

Each was issued via mcp__claude_ai_Incomex_VPS__query_pg with database='directus'. The MCP layer guarantees:

• READ ONLY transaction.
• AST-validated SELECT statements only.
• statement_timeout 5s.
• Hard LIMIT 500.
• No DDL, no writes possible at the role layer.

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§8. KB list verification

mcp__claude_ai_Incomex_KB__list_documents on knowledge/dev/laws/dieu44-trien-khai/v0.6-dieu45-full-queue-orchestration-design-pack/ returns 18 items (00 through 17) after this doc + doc 17 are uploaded.

The 16-item listing snapshot taken before this doc + doc 17 were uploaded shows docs 00–15 present. After uploading 16 and 17, the final count will be 18.

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§9. Conclusion

no_mutation_verified=true
substrate_state_at_macro_start=preserved
substrate_state_at_macro_end=preserved
event_outbox_traffic_attribution=background_system_issue_opened_only
worker_state_at_macro_end=identical_to_start (cursor unchanged proves zero tick during the pack)
pg_cron_install=did_not_happen
qdrant_calls=zero
law_text_change=zero
operator_alias_change=zero
KB_writes_scoped_to=v0.6-dieu45-full-queue-orchestration-design-pack/
hard_gate_0_passed=true

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No-mutation verification. Authored 2026-05-26 by Claude Opus 4.7 (1M).