fix(opencode): submit admitted native startup briefs without overwriting input (#24762)

* fix: wait for OpenCode worker composer before first dispatch

Reuse captured composer readiness on local and paired execution hosts and revoke launching-shell paste anchors.

Co-authored-by: Brennan Benson <79079362+brennanb2025@users.noreply.github.com>

* feat(opencode): probe execution-host CLI capabilities

* fix(opencode): select plugin default for execution host loader

* fix(opencode): limit prompt prefill capability to verified release

* feat(opencode): probe launch capabilities on the execution host

* fix(opencode): select plugin loader for the launched host binary

* fix(opencode): match WSL probe cwd and declared guest environment

* fix(opencode): preserve launch environment deletion boundaries

* wip(opencode): authorize native startup prompt intent at execution owner

* fix(opencode): atomically replace status plugin entrypoints

* fix(opencode): retain plugin permissions across restrictive umasks

* test(opencode): resolve permission fixture from primary cwd

* feat(opencode): install startup prompt plugin independently of status hooks

* fix(opencode): wait for admitted startup intent and preserve failed-launch briefs

* fix(opencode): unsubscribe hook settings during async host shutdown

* STRICT launch CI contract correction

* CAPS launch CI contract correction

* INTENT launch CI contract correction

* test: initialize Claude prompt state in output retention fixture

* Wait for OpenCode location hydration in intent startup

* Bind OpenCode startup readiness to the current location in intent startup

* Retry interrupted OpenCode startup prompt claims

---------

Co-authored-by: Brennan Benson <79079362+brennanb2025@users.noreply.github.com>
Co-authored-by: Ahmed Nagy <ahmednagy25t@gmail.com>
Co-authored-by: Orca startup hydration review <agents@stably.ai>
Co-authored-by: Orca <dev@stably.ai>

src/shared/opencode-headless-command.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it } from 'vitest'
+import { tokenizeStartupCommand } from './tui-agent-startup-shell'
 import { tokenizeCommandLine } from './agent-command-line-entrypoint'
 import { isOpenCodeRunCommand } from './opencode-headless-command'
 
@@ -24,3 +25,66 @@ describe('isOpenCodeRunCommand', () => {
     expect(matches('opencode --log-level run')).toBe(false)
   })
 })
+
+describe('wrapped OpenCode run command position', () => {
+  it.each([
+    'CUSTOM_CONFIG=private opencode --log-level debug run --standalone',
+    'env CUSTOM_CONFIG=private opencode run --standalone',
+    'CUSTOM_CONFIG=private /usr/bin/env -- EXTRA_CONFIG=kept opencode run --standalone'
+  ])('recognizes only the executable behind supported POSIX prefixes: %s', (command) => {
+    expect(matches(command)).toBe(true)
+  })
+
+  it('recognizes a PowerShell call operator before a quoted executable', () => {
+    const parsed = tokenizeStartupCommand(
+      '& "C:\\Program Files\\opencode\\opencode.exe" run --standalone',
+      'powershell'
+    )
+    expect(parsed.ok).toBe(true)
+    if (!parsed.ok) {
+      throw new Error(parsed.error)
+    }
+    expect(isOpenCodeRunCommand(parsed.tokens, 'powershell')).toBe(true)
+    expect(isOpenCodeRunCommand(parsed.tokens, 'cmd')).toBe(false)
+  })
+
+  it.each([
+    'env -u FOO opencode run',
+    'env -uFOO opencode run',
+    'env --unset FOO opencode run',
+    'env --unset=FOO opencode run',
+    'env -i PRIVATE_CONFIG=kept opencode run',
+    'env --ignore-environment PRIVATE_CONFIG=kept opencode run',
+    'env - PRIVATE_CONFIG=kept opencode run',
+    'env -C /workspace opencode run',
+    'env -C/workspace opencode run',
+    'env --chdir /workspace opencode run',
+    'env --chdir=/workspace opencode run',
+    'env -P /private/bin opencode run',
+    'env -P/private/bin opencode run',
+    'CONFIG=kept /usr/bin/env -i -u FOO -C /workspace -- OTHER=kept opencode run'
+  ])('recognizes an executable after env options: %s', (command) => {
+    expect(matches(command)).toBe(true)
+  })
+
+  it.each([
+    'env -u',
+    'env -C',
+    'env -u opencode run',
+    'env -C opencode run',
+    'env -u FOO echo opencode run',
+    'env --unset=FOO echo run',
+    'env -S "opencode run"',
+    'env --unknown opencode run'
+  ])('does not mistake env option arguments for the executable: %s', (command) => {
+    expect(matches(command)).toBe(false)
+  })
+
+  it('does not find executable names inside other commands or prompt arguments', () => {
+    expect(matches('env CUSTOM_CONFIG=private echo opencode run')).toBe(false)
+    expect(matches('env CUSTOM_CONFIG=private echo run')).toBe(false)
+    expect(matches('CUSTOM_CONFIG=private opencode --prompt "opencode run"')).toBe(false)
+    expect(matches('env -- opencode serve --title run')).toBe(false)
+    expect(matches('opencode attach http://host/run')).toBe(false)
+  })
+})