Merge origin/main into deferred OpenCode restart branch.

Resolve ProvidersPage and lifecycle conflicts with custom providers and
AppImage ARGV0 stripping. Address review follow-ups: OAuth index helper +
tests, single auth-methods load trigger, shared Google env-alias module with
VS Code parity coverage, and deferred restart for custom provider upsert.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/vscode/src/provider-env-aliases.parity.test.ts

@@ -0,0 +1,33 @@
+import assert from 'node:assert/strict';
+import { describe, test } from 'node:test';
+import { applyProviderEnvAliases as fromVscode } from './provider-env-aliases';
+import { applyProviderEnvAliases as fromWeb } from '../../web/server/lib/opencode/provider-env-aliases.js';
+
+describe('provider env alias parity (vscode ↔ web)', () => {
+  test('mirrors GEMINI_API_KEY onto Google Generative AI env names', () => {
+    const input = {
+      GEMINI_API_KEY: 'AIza-demo',
+      PATH: '/usr/bin',
+    };
+    assert.deepEqual(fromVscode(input), fromWeb(input));
+    assert.deepEqual(fromVscode(input), {
+      GEMINI_API_KEY: 'AIza-demo',
+      GOOGLE_API_KEY: 'AIza-demo',
+      GOOGLE_GENERATIVE_AI_API_KEY: 'AIza-demo',
+      PATH: '/usr/bin',
+    });
+  });
+
+  test('does not overwrite an already-set preferred Google key', () => {
+    const input = {
+      GEMINI_API_KEY: 'from-gemini',
+      GOOGLE_GENERATIVE_AI_API_KEY: 'from-google',
+    };
+    assert.deepEqual(fromVscode(input), fromWeb(input));
+  });
+
+  test('returns empty object for invalid input', () => {
+    assert.deepEqual(fromVscode(null as unknown as NodeJS.ProcessEnv), fromWeb(null));
+    assert.deepEqual(fromVscode(undefined as unknown as NodeJS.ProcessEnv), fromWeb(undefined));
+  });
+});