dot-iu-cutter v0.4 — PG-backed Dry-run Schema Contract Mismatch GPT Review

Date: 2026-05-17 Reviewer: GPT Reviewed Agent halt report: knowledge/dev/laws/dieu44-trien-khai/v0.4-db-adapter-dry-run/dot-iu-cutter-v0.4-pg-backed-dry-run-EXECUTION-BLOCKED-2-schema-contract-mismatch-2026-05-17.md

Verdict

agent_halt: PASS_CORRECT
execution_status: BLOCKED_PRE_EXECUTION
root_cause: accepted_code_to_deployed_schema_contract_mismatch
adapter_defect: false
verification_r3_defect: false
production_touched: false
execution_authorized_now: false
next_phase: ledgerwriter_schema_binding_design

Agent correctly stopped before provisioning. The blocker is not the RealPostgresAdapter transport and not the r3 row-count matrix. The blocker is that the accepted code's abstract LedgerWriter write shape does not match the deployed cutter_governance tables.

Accepted Finding

accepted_code_commit: 56d3732cb74d07546c938242180a434ed1067a9a
canonical_flow:
  - MARK
  - SWEEP
  - REVIEW
  - CUT
  - VERIFY
first_expected_failure: S4_MARK_append_history
likely_sqlstate:
  - 42703_missing_column
  - 23502_not_null_violation
summary: in_memory_ledger_shape_not_yet_bound_to_real_schema

The in-memory test suite passing is not enough for PG-backed dry-run because it did not assert the deployed DDL contract.

Boundary Confirmation

dry_run_env_created: false
backup_taken: false
harness_artifact_authored: false
production_connection_beyond_read_only_catalog: false
production_secret_read: false
production_row_write: false
code_change: false
git_commit_needed: false
prior_envs_touched: false

Ruling on Candidate Resolutions

GPT selects resolution path 1:

selected_resolution: schema_binding_cycle_for_LedgerWriter
rejected_for_now:
  restore_target_reframing: wrong_direction_because_production_schema_is_SSOT
  abstract_schema_shadow: would_not_test_deployed_schema
  adapter_mapping_shim_without_design: forbidden_improvisation
  in_memory_only_rescope: not_sufficient_for_current_milestone

The production schema is the target contract. The next step is a design cycle mapping each LedgerWriter write to the actual deployed cutter_governance columns.

Required Next Phase

Open a new phase:

phase: v0_4_LedgerWriter_schema_binding_design
nature: design_only
purpose: bind accepted runtime write intents to deployed cutter_governance schema before any PG-backed dry-run

Required outputs:

required_documents:
  - ledgerwriter_schema_gap_analysis
  - per_writer_mapping_design
  - state_history_and_sweep_mapping_design
  - mark_review_cut_verify_schema_binding_plan
  - pg_backed_test_revision_plan
  - risk_and_migrationless_code_change_plan
  - ledgerwriter_schema_binding_report

Design must cover at least:

writers_to_map:
  - append_entry
  - append_history
  - append_sweep_log
  - insert_manifest_envelope
  - insert_manifest_unit_block
  - insert_review_decision
  - insert_dot_pair_signature
  - insert_cut_change_set
  - insert_cut_change_set_affected_row
  - insert_verify_result
  - update_entry_status
  - update_review_superseded_by_if_any
requirements:
  - compare_code_shape_to_live_columns_and_not_nulls
  - define_exact_column_mapping_or_code_change_needed
  - preserve_append_only_audit_semantics
  - preserve_no_DELETE_TRUNCATE_DDL_GRANT_runtime_surface
  - preserve_accepted_principal_routing
  - update_expected_row_count_matrix_if_mapping_changes_counts
  - define new unit tests that assert deployed schema contract without production connection

Gates

PG_backed_dry_run: blocked_until_schema_binding_design_PASS_and_code_authoring_PASS
code_change: not_authorized_by_this_review
production_connection: forbidden
production_CUT_VERIFY: forbidden
deploy: forbidden

Status

ready_for_ledgerwriter_schema_binding_design_prompt: true
agent_self_advance_to_code_or_dry_run: prohibited