fix(evidence): enforce the combined record limit

src/application/EvidenceLedger.ts

@@ -62,7 +62,12 @@ export class EvidenceLedger {
         ? ok("duplicate")
         : err(new EvidenceIntegrityError("Conflicting evidence record"));
     }
-    if (this.#records.size >= this.limits.maxRecords)
+    if (
+      this.#exceedsRecordLimit(
+        this.#records.size + 1,
+        this.#unknownRevisions.size,
+      )
+    )
       return err(new EvidenceLimitError("records", this.limits.maxRecords));
     const bytes = serializedBytes(evidence);
     if (this.#bytes + bytes > this.limits.maxBytes)
@@ -344,7 +349,7 @@ export class EvidenceLedger {
     number,
     EvidenceIntegrityError | EvidenceLimitError | UnknownRegistryError
   > {
-    if (records.size + unknowns.size > this.limits.maxRecords)
+    if (this.#exceedsRecordLimit(records.size, unknowns.size))
       return err(new EvidenceLimitError("records", this.limits.maxRecords));
     const bytes =
       [...records.values()].reduce(
@@ -367,6 +372,10 @@ export class EvidenceLedger {
     return ok(bytes);
   }
 
+  #exceedsRecordLimit(recordCount: number, unknownCount: number): boolean {
+    return recordCount + unknownCount > this.limits.maxRecords;
+  }
+
   #commit(
     records: ReadonlyMap<string, Evidence>,
     unknowns: ReadonlyMap<string, ResidualUnknown>,

tests/evidence.test.ts

@@ -204,6 +204,47 @@ describe("analysis evidence", () => {
     expect(byteBound.export().records).toEqual([]);
   });
 
+  it("counts unknown revisions when enforcing direct record limits", () => {
+    const ledger = new EvidenceLedger({
+      maxRecords: 2,
+      maxBytes: 1_000_000,
+    });
+    const mutation = createEvidence(undefined, PROVIDER, {
+      predicateType: "rea.residual-unknown-mutation/v1",
+      operation: "record_unknown",
+      parameters: {},
+      result: { action: "record" },
+    });
+    const unknown = recordUnknownInputSchema.parse({
+      approved: true,
+      question: "What remains unresolved?",
+      severity: "high",
+      domain: "record-limit-test",
+      supporting_evidence_ids: [],
+      contradicting_evidence_ids: [],
+      required_authority: "shipped-artifact",
+      required_confidence: "observed",
+      required_environment: null,
+      recommended_probes: [],
+      relationships: [],
+    });
+    expect(ledger.recordUnknown(unknown, mutation).ok).toBe(true);
+
+    const direct = createEvidence(TARGET, PROVIDER, {
+      operation: "health",
+      parameters: {},
+      result: true,
+    });
+    expect(ledger.record(direct)).toMatchObject({
+      ok: false,
+      error: { _tag: "EvidenceLimitError", limit: "records", maximum: 2 },
+    });
+    expect(ledger.export()).toMatchObject({
+      records: [mutation],
+      unknowns: [expect.objectContaining({ domain: "record-limit-test" })],
+    });
+  });
+
   it("derives byte-stable manifests independent of record insertion order", () => {
     const artifactEvidence = createEvidence(TARGET, PROVIDER, {
       operation: "health",