[Release] QA account deletion end to end

[jjoonleo]

Backlog ID: ISSUE-026
Source: plans/release_app_todos.md

Goal

Verify deletion behavior in the released app and backend.

Parallelization

Status: blocked

Prerequisites

• [Release] Verify in-app account deletion flow #438 - In-app deletion flow must be verified first.
• [Release] Verify backend account and data deletion behavior #439 - Backend deletion behavior must be confirmed.
• [Release] Build a signed release Android App Bundle #452 - Requires a release build or release-equivalent install path.

Acceptance criteria

• Account deletion succeeds for a test user.
• User cannot continue using deleted credentials/session.
• Associated schedule/user data is removed or retained according to documented policy.
• Failure handling does not leave the app in a broken state.
• Test result is recorded.

Codex thread guidance

• Work only on this issue's scope.
• Do not modify unrelated release issues.
• If this issue is blocked by external access or human approval, prepare the needed checklist/text and leave the issue open.
• Do not implement final closure until the prerequisites above are complete; prepare only unblocker notes if started early.