trivial turn patch

test/trivial-turn.test.js

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+// Trivial-turn guard — tests the REAL isTrivialTurn from @nexusai/shared, which
+// gates whether a turn skips retrieval + entity extraction. The critical property
+// is high precision: greetings/pleasantries are caught, but real short queries
+// must NOT be (a false positive would suppress retrieval on a genuine question).
+const { test } = require('node:test');
+const assert = require('node:assert');
+const { isTrivialTurn } = require('@nexusai/shared');
+
+test('plain greetings and pleasantries are trivial', () => {
+  for (const m of ['good morning', 'Good morning!', 'hello', 'hey there', 'hi',
+                    'thanks', 'thank you so much', 'bye', 'ok', 'sounds good',
+                    'just dropping in', 'just checking in', 'cheers']) {
+    assert.strictEqual(isTrivialTurn(m), true, `"${m}" should be trivial`);
+  }
+});
+
+test('trailing filler collapses to a base greeting', () => {
+  assert.strictEqual(isTrivialTurn('good morning again'), true);
+  assert.strictEqual(isTrivialTurn('thanks everyone'), true);
+  assert.strictEqual(isTrivialTurn('hello there'), true);
+});
+
+test('empty or punctuation-only input is trivial', () => {
+  assert.strictEqual(isTrivialTurn(''), true);
+  assert.strictEqual(isTrivialTurn('   '), true);
+  assert.strictEqual(isTrivialTurn('!!!'), true);
+  assert.strictEqual(isTrivialTurn(null), true);
+});
+
+test('real queries are NOT trivial — even short ones (the precision guarantee)', () => {
+  for (const m of ['what is the capital of France', 'France capital', 'capital of France?',
+                    'how do I configure Qdrant', 'One Piece', 'help me debug this',
+                    'what did we decide about the schema', 'morning routine ideas']) {
+    assert.strictEqual(isTrivialTurn(m), false, `"${m}" should be substantive`);
+  }
+});
+
+test('a greeting prefix does not make a substantive message trivial', () => {
+  // "good morning, can you help with X" carries a real request — must not be skipped
+  assert.strictEqual(isTrivialTurn('good morning, can you help me with the migration'), false);
+  assert.strictEqual(isTrivialTurn('hey, what is the One Piece'), false);
+});