Recover mobile sign-in continuation after process restart
An emulator restart during local sign-in loses the requested destination. Persist minimal, expiring continuation state.
- Focused work estimate
- 4h + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Persistence · Security
Estimated field mix
- Mobile60%
- Security40%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
Fictional team-planning app Finch opens invitations and shared work items. All users and sessions are synthetic; implement the app in an emulator without external identity credentials.
Setup prerequisites
- Create a local session adapter with expiry and revocation.
- Define synthetic invitation and work-item links.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Valid continuation resumes once
- Expired continuation is discarded
- Unknown schema versions fail closed
Implementation constraints
- Persist no session secrets in navigation storage.
Verification to include
- Restart before continuation
- Tamper with saved destination
Deliverables
- Versioned continuation store and restart checks
Rollout and recovery
Delete continuation metadata and return home.
Value of the work
For the engineer: Practice navigation state, capability checks and session boundaries.
For the team: Inspect whether links remain useful without bypassing authorization.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.