fix: prevent bundled OpenCode self-upgrades (#2525)

* fix: prevent bundled OpenCode self-upgrades

* feat(vscode): support OpenCode upgrades

* fix: refresh OpenCode update status on runtime switch

---------

Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>

packages/ui/src/components/update/__tests__/openCodeUpdateDedup.test.ts

@@ -181,6 +181,7 @@ describe('resolveOpenCodeUpgradeStatusVersion', () => {
             resolveOpenCodeUpgradeStatusVersion({
                 available: true,
                 latestVersion: '1.16.0',
+                upgrade: { supported: true },
             }),
         ).toBe('1.16.0');
     });
@@ -190,6 +191,7 @@ describe('resolveOpenCodeUpgradeStatusVersion', () => {
             resolveOpenCodeUpgradeStatusVersion({
                 available: true,
                 latestVersion: '  1.16.0  ',
+                upgrade: { supported: true },
             }),
         ).toBe('1.16.0');
     });
@@ -211,6 +213,22 @@ describe('resolveOpenCodeUpgradeStatusVersion', () => {
         ).toBe('');
     });
 
+    test('fails closed when the server does not explicitly support upgrades', () => {
+        expect(
+            resolveOpenCodeUpgradeStatusVersion({
+                available: true,
+                latestVersion: '1.16.0',
+            }),
+        ).toBe('');
+        expect(
+            resolveOpenCodeUpgradeStatusVersion({
+                available: true,
+                latestVersion: '1.16.0',
+                upgrade: { supported: false },
+            }),
+        ).toBe('');
+    });
+
     test('returns empty string when available is missing or null', () => {
         expect(
             resolveOpenCodeUpgradeStatusVersion({