fix(evidence): validate curated runtime corpus

backend/src/workspaces/runtime-renderer.ts

@@ -174,7 +174,10 @@ function renderEvidence(
   }
 
   return {
-    evidence: { sources: [renderedSource] },
+    evidence: {
+      ...(workspace.evidence.schema_version === 2 ? { schema_version: 2 } : {}),
+      sources: [renderedSource],
+    },
     vector: {
       max_chunk_chars: workspace.evidence.policy.max_chunk_chars,
       retain_published_generations: workspace.evidence.policy.retain_published_generations,

backend/src/workspaces/schema.ts

@@ -341,11 +341,11 @@ const workspaceEvidenceSchema = z.object({
       path: ["source", "patterns"],
       message: "schema-versioned filesystem Evidence patterns cannot span source and curated",
     });
-  } else if (!patterns.every((pattern) => pattern === "curated" || pattern.startsWith("curated/"))) {
+  } else if (patterns.length !== 1 || patterns[0] !== "curated/**/*.md") {
     context.addIssue({
       code: "custom",
       path: ["source", "patterns"],
-      message: "schema-versioned filesystem Evidence patterns must acquire curated documents only",
+      message: "schema-versioned filesystem Evidence patterns must be exactly curated/**/*.md",
     });
   }
 }).transform((evidence) => ({

backend/test/workspace-runtime-renderer.test.ts

@@ -207,6 +207,7 @@ test("renders filesystem Evidence below the immutable revision content root with
 
   expect(rendered.runtime_identity.workspace_revision).toBe(evidenceRevision);
   expect(rendered.evidence).toEqual({
+    schema_version: 2,
     sources: [{
       type: "filesystem",
       root: `/srv/registry/snapshots/${evidenceRevision}/psd-clinical/evidence`,

backend/test/workspaces-schema.test.ts

@@ -442,6 +442,26 @@ test("rejects a schema-versioned Evidence layout that acquires source documents
   }, /curated/i);
 });
 
+test.each(["curated/**/*.yaml", "curated/**"])(
+  "rejects a schema-versioned Evidence layout that uses the non-canonical curated pattern %s",
+  (pattern) => {
+    expectSafeEvidenceError({
+      ...withEvidence({
+        type: "filesystem",
+        uri: "psd-clinical/evidence",
+      }),
+      evidence: {
+        schema_version: 2,
+        source: {
+          type: "filesystem",
+          uri: "psd-clinical/evidence",
+          patterns: [pattern],
+        },
+      },
+    }, /curated\/\*\*\/\*\.md/i);
+  },
+);
+
 test("keeps evidence optional on schema v3", () => {
   expect(validateWorkspaceDescriptor(validWorkspaceObject())).not.toHaveProperty("evidence");
 });