Environment: Linux; real T3 dev servers; isolated fresh databases; synthetic fixture only.
Fixture commit (identical on both sides): 9734563eefe465dcd04951d7e67f91456cc96b41
Capture: Chromium web client, dark theme, 1280x800 CSS viewport.

BEFORE d756fed7aaac06134bc68cbe0047e6f14b0e9aa2
Actual askpass helper output:
ASKPASS invoked; waiting indefinitely
ASKPASS invoked; waiting indefinitely
(Two invocations: initial CLI reconnaissance and the recorded UI reproduction.)
Recorded UI run: still Check out files 100% at 23 seconds; /side submission showed Side chat not started / Available once the thread's worktree is set up.

AFTER fc9e8e1027a8b71f011c0295c941c1d7cceefefa
Askpass log absent: helper was not invoked.
Actual server log excerpts (local filesystem paths redacted):
[20:54:32.690] WARN (#8782) http.span=344ms: worktree submodule checkout failed; submodules may be incomplete
  {
    worktreePath: '<isolated-worktree>',
    cause: {
      _tag: 'GitCommandError',
      operation: 'GitVcsDriver.createWorktree.updateSubmodules',
      command: 'git',
      cwd: '<isolated-worktree>',
      argumentCount: 4,
      exitCode: 1,
      stdoutLength: 0,
      stderrLength: 965,
      reason: 'authentication_failed',
      detail: 'Git command exited with a non-zero status.'
    }
  }
[20:54:33.932] INFO (#9206) http.span=476ms: Sent HTTP response
  http.method: POST
  http.url: /api/observability/v1/traces

[20:56:22.716] WARN (#18907) http.span=96016ms: worktree submodule checkout failed; submodules may be incomplete
  {
    worktreePath: '<isolated-worktree>',
    cause: {
      _tag: 'GitCommandError',
      operation: 'GitVcsDriver.createWorktree.updateSubmodules',
      command: 'git',
      cwd: '<isolated-worktree>',
      argumentCount: 4,
      exitCode: 1,
      stdoutLength: 0,
      stderrLength: 941,
      reason: 'authentication_failed',
      detail: 'Git command exited with a non-zero status.'
    }
  }
[20:56:23.676] INFO (#19429) http.span=307ms: Sent HTTP response
  http.method: POST
  http.url: /api/observability/v1/traces

Recorded UI run: primary replay turn completed (Worked for 5.7s); side chat opened and completed (Worked for 5.2s).
The replay response content is a fixture, not a claim that application tests were run. No tests were used as evidence.
AI-assisted; verified with the tests and tools listed above.