docs+test: Missão 9 - conclude cascade diagnosis for all 4 real clients

Full 18-field diagnostic (local_completion.py) ran successfully for
Cliente A (CONSTRUCAO) and Cliente B (MMMODAS): zero AUTO_FILL_SAFE
cells in either, so there is nothing for the guarded write cascade to
apply - a correct engine result, not a blocker. Real Agent jobs
completed for all 4 clients (A/B/C/D), confirming the same pattern.
RINCAO/UNIAO snapshot stayed blocked by the session's auto-mode
classifier across two attempts; documented as a known gap instead of
worked around.

Fixed central/tests/test_field_contract.py: its ALLOWED fixture still
pointed at Banco/CONSTRUCAO.FDB from before this mission's allowlist
change to work_copies/; updated it and added the original path as an
explicit must-be-rejected case. Canonical suite: 1191 passed, 1
skipped.

Rewrote the stale "encerrado a pedido do operador" report in
MISSAO_9_LOG.md (written at a premature shutdown) with the real final
report, and updated PROJECT_STATE.md to reflect mission completion.

docs/runs/local_completion/CONSTRUCAO_dryrun_summary.json

@@ -18,9 +18,8 @@
    "MANUAL_INPUT_REQUIRED": 14
   },
   "IPI": {
-   "NOT_APPLICABLE": 1283,
-   "ALREADY_CORRECT": 1497,
-   "MANUAL_INPUT_REQUIRED": 932
+   "NOT_APPLICABLE": 3698,
+   "MANUAL_INPUT_REQUIRED": 14
   },
   "EX_TIPI": {
    "NOT_APPLICABLE": 3698,
@@ -100,13 +99,10 @@
  "reasons": {
   "CLASSIFICACAO_FISCAL": {
    "ALREADY_CORRECT|NCM_VALID_IN_DATASET": 3698,
-   "MANUAL_INPUT_REQUIRED|NCM_INVALID": 14
+   "MANUAL_INPUT_REQUIRED|NCM_OUT_OF_OFFICIAL_TABLE": 14
   },
   "IPI": {
-   "ALREADY_CORRECT|TIPI_NUMERIC_RATE": 1497,
-   "NOT_APPLICABLE|TIPI_RATE_BLANK_NEVER_ZERO": 1220,
-   "MANUAL_INPUT_REQUIRED|SEVERAL_TIPI_ROWS_FOR_NCM": 918,
-   "NOT_APPLICABLE|TIPI_NT_OR_NON_NUMERIC_NEVER_WRITTEN_TO_NUMERIC_FIELD": 63,
+   "NOT_APPLICABLE|COMPANY_IS_NOT_AN_IPI_TAXPAYER_C000004.CONTRIBUINTE_IPI": 3698,
    "MANUAL_INPUT_REQUIRED|BLOCKED_BY_NCM": 14
   },
   "EX_TIPI": {
@@ -198,7 +194,6 @@
  },
  "manual_inputs": {
   "COD_ORIGEM_MERCADORIA|origin": 3711,
-  "IPI|ex_tipi": 918,
   "SITUACAO_TRIBUTARIA|st_withheld": 867,
   "CEST|cest": 639,
   "CFOP_ENTRADA|entry_scope": 26,