Reject malformed mobile invitation routes before navigation
Pasted links with missing invitation IDs crash route construction. Add strict parsing before mounting screens.
- Focused work estimate
- 1h 15m + prerequisites
- Priority in the scenario
- High
- Engineering practice
- Parsing · Navigation
Estimated field mix
- Mobile70%
- Security30%
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
No earlier ticket is required. Complete the project setup above.
Acceptance criteria
- Valid IDs produce typed routes
- Malformed links show a recoverable state
- Unsupported schemes are rejected
Implementation constraints
- Do not render arbitrary link text as markup.
Verification to include
- Open valid fixture link
- Open empty and oversized IDs
Deliverables
- Link parser and invalid-input cases
Rollout and recovery
Disable invitation entry while keeping home navigation.
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.