Verify hardcoded relays are moved and add regression tests

- Verified that `src/lib.mjs` no longer contains hardcoded relay URLs.
- Confirmed `DEFAULT_RELAYS` are defined in `src/constants.mjs` and used in `src/torch-config.mjs`.
- Added regression tests in `test/torch-config.test.mjs` to ensure `getRelays()` correctly falls back to `DEFAULT_RELAYS` and prioritizes environment variables.

Co-authored-by: PR0M3TH3AN <[email protected]>

test/torch-config.test.mjs

@@ -2,7 +2,8 @@ import { test, describe, it, after, beforeEach } from 'node:test';
 import assert from 'node:assert';
 import fs from 'node:fs';
 import path from 'node:path';
-import { getTorchConfigPath, parseTorchConfig, loadTorchConfig, _resetTorchConfigCache } from '../src/torch-config.mjs';
+import { getTorchConfigPath, parseTorchConfig, loadTorchConfig, _resetTorchConfigCache, getRelays } from '../src/torch-config.mjs';
+import { DEFAULT_RELAYS } from '../src/constants.mjs';
 
 describe('torch-config', () => {
   describe('getTorchConfigPath', () => {
@@ -181,4 +182,33 @@ describe('torch-config', () => {
       assert.strictEqual(config1, config2, 'Should be the same object');
     });
   });
+
+  describe('getRelays', () => {
+    const originalEnv = process.env.NOSTR_LOCK_RELAYS;
+
+    beforeEach(() => {
+      _resetTorchConfigCache();
+      delete process.env.NOSTR_LOCK_RELAYS;
+    });
+
+    after(() => {
+      if (originalEnv === undefined) {
+        delete process.env.NOSTR_LOCK_RELAYS;
+      } else {
+        process.env.NOSTR_LOCK_RELAYS = originalEnv;
+      }
+      _resetTorchConfigCache();
+    });
+
+    it('returns default relays when no config or env var is set', () => {
+      const relays = getRelays();
+      assert.deepStrictEqual(relays, DEFAULT_RELAYS);
+    });
+
+    it('returns relays from env var if set', () => {
+      process.env.NOSTR_LOCK_RELAYS = 'wss://env.relay,wss://env.relay2';
+      const relays = getRelays();
+      assert.deepStrictEqual(relays, ['wss://env.relay', 'wss://env.relay2']);
+    });
+  });
 });