test: deepen provider authority scenarios (stack 1/12)

[vishaltandale00]

Stack

1 of 12. Base: main. This PR is the foundation of the test-depth reduction stack. Draft only; do not merge before the complete stack is presented.

Scope and checkpoints

Test-only change. Production seams observed: ProviderDefinitionService, ModelCatalogService, the Adapter registry, provider composition, and the real product app-server flow. No production behavior changes.

This preserves the PRD boundaries for provider authentication and discovery, capability admission, atomic definition/credential/runtime/catalog lifecycle, zero-eligible connected state, refresh authorization/cancellation/shutdown, static imports, and packaging.

Reduction

• Provider portfolio registrations: 108 -> 62
• Full Vitest registrations: 1,829 -> 1,783
• Portfolio LOC: 2,989 -> 2,802

The replacements use scenario matrices and aggregate completion while retaining distinct failure and authority boundaries.

Verification plan

• Run the seven-file focused provider portfolio.
• Run npm run build.
• Run npm run check; preserve any unrelated failure explicitly.
• Require adversarial subsumption review of every retired test boundary.

Verification actually run

• Focused provider portfolio: PASS, 7 files / 62 tests.
• npm run build: PASS.
• npm run check: repository gate remains RED only at test/provider-electron-evidence.test.mjs, timing out while waiting for same-turn retry submission; 147 Vitest files and 1,782 tests passed, 1 file/1 test failed, 1 skipped. The same unrelated timeout was reproduced before this final snapshot.
• git diff --check: PASS.

Adversarial review

Reviewer /root/certify_pr1_provider; workspace diff SHA-256 f12b4bb6da2f7bb6e25ec5d4c5b87070104f044e638fcca98bdf182311f3bff2; reviewed the seven-file provider authority/catalog portfolio, exact 108->62 replacement manifest, fixture isolation, aggregate completion, stable labels, hook semantics, and mutation-visible authority/failure boundaries; verdict APPROVE with no unresolved subsumption findings; focused portfolio 62/62 passing and portfolio LOC 2,989->2,802.

Known gate

This draft does not claim a fully green repository check. The existing Electron evidence timeout remains visible for the stack review.