Submit initial OpenCode 2.0.12 prompts through the native startup plugin (#25428)

* fix(opencode): submit initial prompts for reviewed 2.0.12

Route the reported release through the existing native startup intent.
Retain conservative behavior for other unreviewed versions.

* Wait for OpenCode startup fixture file reads in the hydration test

---------

Co-authored-by: nwparker <nwparker@users.noreply.github.com>

src/shared/opencode-cli-version.test.ts

@@ -1,9 +1,12 @@
 import { expect, it } from 'vitest'
 import { getOpenCodeCliCapabilities, parseOpenCodeCliVersion } from './opencode-cli-version'
 
-it.each(['1.1.23', 'opencode v2.0.16', '2.0.0-beta.1+build'])('parses CLI output %s', (output) => {
-  expect(parseOpenCodeCliVersion(output)).toBe(output.replace(/^opencode v/, ''))
-})
+it.each(['1.1.23', 'opencode v2.0.12', 'opencode v2.0.16', '2.0.0-beta.1+build'])(
+  'parses CLI output %s',
+  (output) => {
+    expect(parseOpenCodeCliVersion(output)).toBe(output.replace(/^opencode v/, ''))
+  }
+)
 it.each([null, '', 'Error 2.0.16', '1.1', '2.0.16\nwarning'])(
   'does not mistake other output for a version',
   (output) => {
@@ -21,6 +24,11 @@ it('keeps future versions unknown instead of assuming a plugin loader or prompt
     pluginApi: 'v1',
     promptMode: 'submit'
   })
+  expect(getOpenCodeCliCapabilities('opencode v2.0.12')).toEqual({
+    version: '2.0.12',
+    pluginApi: 'v2',
+    promptMode: 'prefill'
+  })
   expect(getOpenCodeCliCapabilities('opencode v2.0.16')).toEqual({
     version: '2.0.16',
     pluginApi: 'v2',
@@ -29,6 +37,7 @@ it('keeps future versions unknown instead of assuming a plugin loader or prompt
 })
 
 it('does not opt unverified v2 builds into an extra prompt submission', () => {
-  expect(getOpenCodeCliCapabilities('2.0.17').promptMode).toBe('unknown')
-  expect(getOpenCodeCliCapabilities('2.0.16-beta').promptMode).toBe('unknown')
+  for (const version of ['2.0.13', '2.0.15', '2.0.17', '2.0.21', '2.0.12-beta', '2.0.16-beta']) {
+    expect(getOpenCodeCliCapabilities(version).promptMode).toBe('unknown')
+  }
 })