fix(dictionary): pin Hachidori extension ID with a static manifest key

Electron derives an unpacked extension's ID from its directory, so a changed
userData path gave Hachidori a new storage origin and an empty library. The
staged copy now carries a fixed key, like the bundled Yomitan.

scripts/build-hachidori.mjs

@@ -57,6 +57,11 @@ for (const [file, replacements] of Object.entries(hostConfiguration)) {
   fs.writeFileSync(filePath, text);
 }
 manifest.permissions = manifest.permissions.filter((permission) => permission !== 'userScripts');
+// A fixed key pins the extension ID, so Hachidori's storage origin (dictionaries,
+// settings, setup state) survives userData path changes. Electron otherwise
+// derives the ID from the unpacked directory path.
+manifest.key =
+  'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA40zTTbhCbrKnDOqj17tosDChP60VXuuMjR0tFFR/kAet21jrYn0JKPzqqNpXMGaJsx1chnuMOgaP0zuOT+gv9DNVV83wGLhQL7cC4LCoGN648WqnE2jYqBPj6hdD5A/N3uPeKFRAHkiC9HKoj2Et6sYZFTqag79QqQkkUz17X2VpjuTGmTP3lvhyEwhJWQKzOU0k6dTn6fKB2ZSqTebpw/JS2G8jf58vHlQOcfLhIiolKCG9DfMuo11aoG1s3AsFmQmw9VVyp4wgyQ80UI4lyBdqboanJxEiZ211+HKWPEgtG6VML1+Uo59qWS3uBU1apxE1+7E51UBEHaTsxajFIQIDAQAB';
 fs.writeFileSync(path.join(output, 'manifest.json'), JSON.stringify(manifest, null, 2) + '\n');
 for (const file of ['LICENSE', 'SOURCE.json', 'README.md']) {
   fs.copyFileSync(path.join(source, file), path.join(output, file));

scripts/build-hachidori.test.ts

@@ -1,5 +1,6 @@
 import assert from 'node:assert/strict';
 import { execFileSync } from 'node:child_process';
+import { createHash } from 'node:crypto';
 import { readFileSync } from 'node:fs';
 import { fileURLToPath } from 'node:url';
 import test from 'node:test';
@@ -41,5 +42,12 @@ test('Hachidori staging configures Electron without changing the fork source', a
     permissions: originalManifest.permissions.filter(
       (permission: string) => permission !== 'userScripts',
     ),
+    key: manifest.key,
   });
+  // The ID keys Hachidori's stored dictionaries and settings; changing the key orphans them.
+  const digest = createHash('sha256').update(Buffer.from(manifest.key, 'base64')).digest('hex');
+  const extensionId = [...digest.slice(0, 32)]
+    .map((digit) => String.fromCharCode(97 + parseInt(digit, 16)))
+    .join('');
+  assert.equal(extensionId, 'jpfgmfknblendgepdejlfhocdcnjjelj');
 });