Initial commit: Memind H5 portal with MindSpace, Plaza, and agent jobs.

Track application source and tests; exclude local env, user workspaces, and runtime data via .gitignore.

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

plaza-algorithm.test.mjs

@@ -0,0 +1,49 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { algorithmInternals, computeHotScore } from './plaza-algorithm.mjs';
+
+const { DEFAULT_CONFIG } = algorithmInternals;
+
+test('computeHotScore matches documented 3-hour example', () => {
+  const publishedAt = Date.now() - 3 * 3_600_000;
+  const score = computeHotScore(
+    {
+      view_count: 500,
+      like_count: 20,
+      comment_count: 3,
+      collect_count: 5,
+      published_at: publishedAt,
+    },
+    DEFAULT_CONFIG,
+  );
+  assert.ok(Math.abs(score - 12.97) < 0.05);
+});
+
+test('computeHotScore decays for older posts with same stats', () => {
+  const stats = {
+    view_count: 500,
+    like_count: 20,
+    comment_count: 3,
+    collect_count: 5,
+  };
+  const recent = computeHotScore(
+    { ...stats, published_at: Date.now() - 3 * 3_600_000 },
+    DEFAULT_CONFIG,
+  );
+  const older = computeHotScore(
+    { ...stats, published_at: Date.now() - 24 * 3_600_000 },
+    DEFAULT_CONFIG,
+  );
+  assert.ok(recent > older);
+  assert.ok(Math.abs(older - 1.09) < 0.05);
+});
+
+test('computeHotScore never returns negative values', () => {
+  assert.equal(
+    computeHotScore(
+      { view_count: 0, like_count: 0, comment_count: 0, collect_count: 0, published_at: Date.now() },
+      DEFAULT_CONFIG,
+    ),
+    0,
+  );
+});