fix: carry analyzer name+version on the neo4j :Application node

schema.neo4j.json

@@ -14,7 +14,9 @@
         "schema_version": "string",
         "language": "string",
         "max_level": "integer",
-        "k_limit": "integer"
+        "k_limit": "integer",
+        "analyzer_name": "string",
+        "analyzer_version": "string"
       }
     },
     {

src/build/neo4j/project.ts

@@ -51,6 +51,12 @@ export function project(app: V2Application, _appName?: string): GraphRows {
     language: app.language,
     max_level: app.max_level,
     k_limit: app.k_limit ?? null,
+    // Same analyzer{name,version} the JSON envelope carries (emit.ts) — the two co-primary
+    // projections must never diverge on analyzer identity (issue #43). Namespaced as
+    // analyzer_name/analyzer_version (not bare name/version) to avoid colliding with the
+    // app-name param (project()'s _appName) and every other CanNode's bare `name`.
+    analyzer_name: app.analyzer.name,
+    analyzer_version: app.analyzer.version,
   }));
 
   for (const mod of Object.values(root.symbol_table)) {

src/build/neo4j/schema.ts

@@ -56,7 +56,13 @@ export const NODE_LABELS: NodeLabel[] = [
     label: "Application",
     mergeLabel: "Application",
     key: "id",
-    properties: { id: "string", schema_version: "string", language: "string", max_level: "integer", k_limit: "integer" },
+    properties: {
+      id: "string", schema_version: "string", language: "string", max_level: "integer", k_limit: "integer",
+      // Analyzer identity — mirrors the JSON envelope's `analyzer{name,version}` (issue #43),
+      // namespaced (not bare name/version) to avoid colliding with the app-name param / every
+      // other CanNode's bare `name`.
+      analyzer_name: "string", analyzer_version: "string",
+    },
   },
   {
     label: "Module",

test/neo4j-schema.test.ts

@@ -9,6 +9,7 @@ import { describe, expect, test } from "bun:test";
 import * as fs from "node:fs";
 import * as os from "node:os";
 import * as path from "node:path";
+import pkg from "../package.json";
 import {
   MARKER_LABELS,
   NODE_LABELS,
@@ -92,6 +93,19 @@ describe("neo4j schema conformance", () => {
   });
 });
 
+// ---- :Application analyzer identity (issue #43) ------------------------------------------------
+// The JSON envelope advertises `analyzer{name,version}` (#29); the Neo4j :Application node is the
+// co-primary projection of the same envelope and must not diverge on analyzer identity.
+
+describe(":Application node carries analyzer identity (issue #43)", () => {
+  test("version matches package.json (the same source the JSON envelope's analyzer.version uses)", () => {
+    const appNode = rows.nodes.find((n) => n.labels.includes("Application"));
+    expect(appNode, "no :Application node projected").toBeDefined();
+    expect(appNode!.props.analyzer_version).toBe(pkg.version);
+    expect(appNode!.props.analyzer_name).toBe("codeanalyzer-typescript");
+  });
+});
+
 // ---- Class inheritance: EXTENDS/IMPLEMENTS (issue #33) ------------------------------------------
 // dataflow-app's src/hierarchy.ts is a minimal, first-party heritage fixture: `Rectangle implements
 // Shape`, `Square extends Rectangle implements Labeled`.