Parse workspace manifests without executing package scripts
The planner must inspect an unfamiliar checkout without triggering install hooks or repository commands.
- Focused work estimate
- 2h 30m + prerequisites
- Priority in the scenario
- High
- Engineering practice
- TypeScript · Input validation
Estimated field mix
- Developer tooling70%
- 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
A fictional internal tools team maintains eighteen packages. Engineers currently run everything because the affected-package script occasionally misses downstream consumers.
Setup prerequisites
- Create a local six-package fixture with a dependency cycle, shared compiler configuration, and two example changes.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Resolve workspace package names and paths from manifests.
- Reject duplicate names and paths outside the checkout.
- Report malformed JSON with file and safe location.
Implementation constraints
- Treat manifests as data; never evaluate imported configuration.
Verification to include
- Load valid nested workspace fixtures.
- Reject traversal, duplicate identity, and invalid JSON fixtures.
Deliverables
- Manifest parser and fixture tests.
Rollout and recovery
Use read-only inventory mode first; fall back to full CI on parser errors.
Value of the work
For the engineer: Practice graph analysis, reproducible commands, and safe developer-tool failure modes.
For the team: Produce an inspectable CI selection plan that avoids unnecessary work without silently skipping consumers.
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.