AEG-V16-016 — Vendor boundary fitness

Scope

WBS / Requirement / UI / Test: AEG-V16-016 / REQ-V16-UI4-08 / UI-V16-UI4-08 / T-V16-UI4-08
Classification: behavior-preserving validation-tool refactoring. No application provider, API, schema, or component semantics change.

Source: docs/CURRENT/CATALOGS/WBS_MASTER.csv, contracts/ui/ui-adapter.v4.json, tools/validate_v16.py, and frontend/src/shared/ui/adapter/.
Assumption: WBS Master is an extensible source-of-truth catalog; adding approved WBS rows must not make a vendor-boundary validator fail.
Unknown: the acceptance evidence for AEG-V16-009 through AEG-V16-015 is absent from the progress tracker. This slice does not recreate or approve it.
Decision Required: reconcile the Master and tracker before recording AEG-V16-016 as COMPLETED; dependency AEG-V16-015 has no attached acceptance evidence.

Acceptance requirement	Evidence
Feature direct vendor import is zero	`tools/validate_v16.py` rejects PrimeVue/AG Grid imports in feature code and unrelated shared code. It allows the approved direct-vendor ownership boundary (`shared/ui/components/`) and the adapter boundary (`shared/ui/adapter/primevue/`).
Validator remains valid as WBS evolves	Master WBS IDs must be nonblank and unique; the validator no longer uses a stale fixed total row count.
Reproducible evidence	`python tools/validate_v16.py` result is recorded in the WBS tracker after execution.

python tools/validate_v16.py: PASS=1 WARN=2 FAIL=0. Warnings explicitly do not claim a full source archive or external-runtime evidence.
frontend: pnpm test -- --run src/shared/ui/adapter/tests/uiAdapter.contract.spec.ts src/shared/ui/tests/adapterCompatibility.spec.ts: 2 files / 4 tests passed.
frontend: pnpm typecheck: passed.
An initial test invocation from repository root failed because that directory has no package.json; it is not used as evidence. The frontend-directory invocation above is the preserved result.