refactor(rebirth): isolate vector and reroll gates

tests/vector-gate.mjs

@@ -0,0 +1,60 @@
+// ST-BME restrained rebirth — Phase 4 vector readiness boundary tests.
+
+import assert from "node:assert/strict";
+import { planVectorReadyCheck } from "../vector/vector-gate.js";
+
+assert.deepEqual(planVectorReadyCheck({ hasGraph: false }), {
+  action: "skip",
+  reason: "missing-graph",
+});
+
+assert.deepEqual(
+  planVectorReadyCheck({
+    hasGraph: true,
+    metadataWriteAllowed: false,
+    mutationContextAllowed: false,
+    repairAttempted: false,
+  }),
+  { action: "repair-identity", reason: "missing-mutation-context" },
+);
+
+assert.deepEqual(
+  planVectorReadyCheck({
+    hasGraph: true,
+    metadataWriteAllowed: false,
+    mutationContextAllowed: false,
+    repairAttempted: true,
+  }),
+  { action: "block", reason: "missing-mutation-context" },
+);
+
+assert.deepEqual(
+  planVectorReadyCheck({
+    hasGraph: true,
+    metadataWriteAllowed: true,
+    dirty: false,
+  }),
+  { action: "skip", reason: "vector-clean" },
+);
+
+assert.deepEqual(
+  planVectorReadyCheck({
+    hasGraph: true,
+    metadataWriteAllowed: true,
+    dirty: true,
+    configValid: false,
+  }),
+  { action: "skip", reason: "invalid-vector-config" },
+);
+
+assert.deepEqual(
+  planVectorReadyCheck({
+    hasGraph: true,
+    metadataWriteAllowed: true,
+    dirty: true,
+    configValid: true,
+  }),
+  { action: "sync", reason: "vector-dirty" },
+);
+
+console.log("vector-gate tests passed");