fix(rectification): stop unwritten-evidence claims and same-cluster dasha false conflicts (BUG-635–640)

Host only says 记下了 after a real write; Mastra schema rejections fail closed. Ledger year keys no longer drop quality probes, dual-dasha agreement is per cluster, width uses cluster span, and public house tables follow the inference minute.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/tests/rectification-host-fallback.test.ts

@@ -3,8 +3,14 @@ import { readFileSync } from "node:fs";
 import test from "node:test";
 
 import {
+  batchResultFromToolChunk,
   composeHostFallbackNarration,
+  DEFAULT_RETRY_CONSTRAINT,
+  isToolInputRejection,
   publicWriteToolCompleted,
+  retryConstraintForAttempt,
+  turnExpectsEvidenceWrite,
+  UNWRITTEN_EVIDENCE_RETRY_CONSTRAINT,
 } from "../src/lib/rectification-agentic/v9/host-fallback.ts";
 
 test("host fallback recap uses only batch return lines", () => {
@@ -45,6 +51,32 @@ test("write-tool completion is limited to batch, set-focus and compare", () => {
   assert.equal(publicWriteToolCompleted(failedBatch), false);
 });
 
+test("schema rejection envelopes are not treated as batch recaps or write completion", () => {
+  const envelope = {
+    error: true,
+    message: "Tool input validation failed",
+    validationErrors: { errors: [], fields: { kind: "debt" } },
+  };
+  assert.equal(isToolInputRejection(envelope), true);
+  assert.equal(composeHostFallbackNarration(envelope), null);
+  assert.equal(batchResultFromToolChunk({
+    type: "tool-result",
+    payload: { toolName: "rectification-record-evidence-batch", result: envelope },
+  }), null);
+  assert.equal(isToolInputRejection({ error: true, message: "no fields" }), false);
+});
+
+test("year fallback is gone; only explicit evidence expectedWrite triggers the guard", () => {
+  assert.equal(turnExpectsEvidenceWrite("opening", "evidence"), false);
+  assert.equal(turnExpectsEvidenceWrite("read_only", "none"), false);
+  assert.equal(turnExpectsEvidenceWrite("evidence", "evidence"), true);
+  assert.equal(turnExpectsEvidenceWrite("evidence", "none"), false);
+  assert.equal(turnExpectsEvidenceWrite("evidence", "unknown"), false);
+  assert.equal(turnExpectsEvidenceWrite("evidence", undefined), false);
+  assert.equal(retryConstraintForAttempt("evidence_not_written"), UNWRITTEN_EVIDENCE_RETRY_CONSTRAINT);
+  assert.equal(retryConstraintForAttempt("empty_stream"), DEFAULT_RETRY_CONSTRAINT);
+});
+
 test("case snapshot receipts expose host_fallback origin from the durable phase", () => {
   const route = readFileSync(
     new URL("../src/app/api/rectification/cases/[caseId]/route.ts", import.meta.url),