test: cut low-value tests, rewrite the rest around behavior, parallelize lanes (#285)

src/main/character-dictionary-runtime/cache.test.ts

@@ -121,18 +121,3 @@ test('readSnapshot ignores snapshots written with an older format version', asyn
 
   assert.equal(await readSnapshot(snapshotPath), null);
 });
-
-test('readSnapshot ignores v15 snapshots with stale romanized character-name entries', async () => {
-  const outputDir = makeTempDir();
-  const snapshotPath = getSnapshotPath(outputDir, 130298);
-  const staleSnapshot = {
-    ...createSnapshot(),
-    formatVersion: 15,
-    termEntries: [['Vanir', 'ばにる', 'name primary', '', 75, ['Vanir'], 0, '']],
-  };
-
-  fs.mkdirSync(path.dirname(snapshotPath), { recursive: true });
-  fs.writeFileSync(snapshotPath, JSON.stringify(staleSnapshot), 'utf8');
-
-  assert.equal(await readSnapshot(snapshotPath), null);
-});