TenantAtlas/specs/427-exchange-teams-verified-source-contract-enablement/implementation-report.md

Implementation Report: Spec 427 - Exchange / Teams Verified Source Contract Enablement

Branch: 427-exchange-teams-verified-source-contract-enablement
HEAD: f7d06621 feat: implement Exchange Teams evidence identity readiness (#493)
Implementation date: 2026-07-03
Result: PASS - exact source-contract blocker enablement, no evidence/readiness promotion

Preflight

• Initial dirty state before implementation: untracked active spec package specs/427-exchange-teams-verified-source-contract-enablement/.
• Dirty state after implementation: expected runtime/test/spec report changes only.
• Completed Specs 414, 415, 417, 419, 420, and 426 were read-only context. Their spec/plan/tasks/implementation reports were not modified.
• Active gates used: Spec Kit implementation loop, Spec Readiness Gate, TCM cutover guard, provider freshness semantics, evidence anchor contract, workspace scope safety, and Pest testing.
• Hard-gate result: no stop condition met. No UI, route, navigation, Filament provider, OperationRun start UX, real provider capture, evidence promotion, compare/render promotion, certification, restore, customer output, tenant_id, legacy adapter, fallback reader, or dual write was required.

Implementation Summary

• Added bounded source-contract state constants to CoverageSourceContractDecision.
• Added a separate sourceContractState field so source-contract truth is explicit without changing the capture outcome enum family.
• Left already enabled non-target source contracts unchanged to avoid broad relabeling outside Spec 427.
• Mapped exactly transportRule, acceptedDomain, appPermissionPolicy, and meetingPolicy to contract_blocked_repo_adapter_missing.
• Kept all four target types non-capturable: no contract key, no source endpoint, no provider call, no resource row, no evidence row.
• Kept dlpCompliancePolicy and other non-target missing contracts on the existing generic missing-source path.

Source Contract Matrix

Type	Workload	Source class	Final state	Capture outcome	Provider call	Evidence promotion
transportRule	Exchange	tcm	contract_blocked_repo_adapter_missing	capture_blocked_missing_contract	no	no
acceptedDomain	Exchange	tcm	contract_blocked_repo_adapter_missing	capture_blocked_missing_contract	no	no
appPermissionPolicy	Teams	tcm	contract_blocked_repo_adapter_missing	capture_blocked_missing_contract	no	no
meetingPolicy	Teams	tcm	contract_blocked_repo_adapter_missing	capture_blocked_missing_contract	no	no

No endpoint guessing, direct HTTP, runtime documentation fetch, provider bypass, Graph contract entry, or provider OAuth/scope widening was added.

Safety Matrices

Permission

• Permission model for all four types is not_productized.
• Required application permissions and delegated permissions remain empty in Spec 427 metadata.
• Failure mode is block_without_provider_call.
• Permission context remains redacted and is not default output.

Response Shape

• Response shape remains provider_collection_candidate.
• Empty collection, permission denied, unsupported, source unavailable, and malformed response are distinct future-adapter meanings.
• State remains blocked until a repo adapter can distinguish those cases.

Identity

• Identity handoff is stable_candidate.
• Preferred/fallback identity fields are type-specific and do not include displayName, DisplayName, name, Name, or Identity.
• Display-only payloads still resolve to missing_external_id.

Redaction

• Raw payload and permission context are not default-visible.
• Metadata forbids raw provider payloads, provider responses, authorization headers, tokens, credentials, mail content, and Teams chat/message/file/recording/transcript content in default output.
• Existing Exchange/Teams helper redaction remains covered by tests.

No-Promotion Matrix

Guard	Result
No resource/evidence rows	passed
No content-backed/comparable/renderable/certified promotion	passed
No customer or restore claim	passed
No tenant_id ownership truth	passed
No Exchange/Teams mini-platform	passed
Spec 426 fail-safe behavior	passed with exact blocker reason
Spec 417 identity registry regression	passed
Spec 420 generic evidence regression	passed

Product Surface / Filament / Deployment

• Product Surface result: N/A - no rendered UI surface changed.
• Browser proof: N/A - no rendered UI surface changed.
• Human Product Sanity: N/A - no product surface changed.
• Product Surface exceptions: none.
• Visible complexity outcome: neutral.
• Livewire v4 compliance: unchanged; Filament v5 remains on Livewire v4.1.4.
• Provider registration location: unchanged; Laravel providers remain in apps/platform/bootstrap/providers.php.
• Global search posture: unchanged; no Filament Resource/global search behavior changed.
• Destructive/high-impact actions: none added.
• Asset strategy: no assets; no new filament:assets deployment requirement.
• Deployment impact: no migrations, env vars, queue/cron changes, storage changes, assets, or runtime provider permission changes.

Validation

Passed:

• cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Unit/Support/TenantConfiguration/Spec427ExchangeTeamsSourceContractStateTest.php tests/Unit/Support/TenantConfiguration/Spec427ExchangeTransportRuleContractTest.php tests/Unit/Support/TenantConfiguration/Spec427ExchangeAcceptedDomainContractTest.php tests/Unit/Support/TenantConfiguration/Spec427TeamsAppPermissionPolicyContractTest.php tests/Unit/Support/TenantConfiguration/Spec427TeamsMeetingPolicyContractTest.php tests/Unit/Support/TenantConfiguration/Spec427SourceContractPermissionMetadataTest.php tests/Unit/Support/TenantConfiguration/Spec427SourceContractResponseShapeTest.php tests/Unit/Support/TenantConfiguration/Spec427SourceContractIdentityHandoffTest.php tests/Unit/Support/TenantConfiguration/Spec427SourceContractRedactionTest.php
  • Initial run: 32 passed, 282 assertions.
  • Post-analysis rerun after non-target relabeling fix: 33 passed, 287 assertions.
• cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Feature/TenantConfiguration/Spec427ExchangeTeamsNoEvidencePromotionTest.php tests/Feature/TenantConfiguration/Spec427ExchangeTeamsNoCompareRenderCertificationTest.php tests/Feature/TenantConfiguration/Spec427ExchangeTeamsNoCustomerRestoreClaimTest.php tests/Feature/TenantConfiguration/Spec427ExchangeTeamsNoTenantIdTest.php tests/Feature/TenantConfiguration/Spec427ExchangeTeamsNoMiniPlatformTest.php
  • Initial pre-fix run hit Signal 9 because the no-mini-platform guard loaded all app PHP files into memory.
  • After narrowing that guard to path-level checks: 5 passed, 104 assertions.
• cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Unit/Support/TenantConfiguration/Spec426ExchangeTeamsSourceContractResolverTest.php tests/Feature/TenantConfiguration/Spec426ExchangeTeamsCoreEvidenceReadinessTest.php
  • 8 passed, 91 assertions.
• cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Unit/Support/TenantConfiguration/Spec417CoverageIdentityStrategyRegistryTest.php tests/Unit/Support/TenantConfiguration/Spec420M365CaptureSourceContractResolverTest.php tests/Feature/TenantConfiguration/Spec420M365GenericEvidenceCaptureTest.php
  • 8 passed, 192 assertions.
• cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Unit/Support/TenantConfiguration/Spec420M365CaptureSourceContractResolverTest.php tests/Feature/TenantConfiguration/Spec420M365GenericEvidenceCaptureTest.php
  • Post-analysis rerun for non-target explicit contract behavior: 6 passed, 90 assertions.
• cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Unit/Support/TenantConfiguration/Spec420M365CaptureEligibilityTest.php
  • 6 passed, 33 assertions.
• cd apps/platform && ./vendor/bin/sail bin pint --dirty --format agent
  • passed.
• git diff --check.
  • passed.

Deferred Work

• Spec 428: Exchange/Teams content-backed evidence promotion after a real source adapter/contract exists.
• Spec 429: Exchange/Teams comparable/renderable promotion after source-backed evidence exists.
• Later certified compare pack, customer reporting claims, restore/apply, provider permission productization, and optional resource expansion.

Post-Implementation Analysis

• Analysis/fix iterations: 1.
• Finding fixed: assigning contract_verified_pending_capture to already-enabled non-target contracts could have created misleading source-contract metadata outside Spec 427. Remediation: leave existing enabled contracts unchanged and add a regression proving conditionalAccessPolicy is not relabeled.
• Final manual review fix: generic blocked resolver outcomes no longer receive sourceContractState; only the four Spec 427 reviewed target types receive the explicit source-contract blocker state. Added regression proof for a non-target unsupported type.
• Merge-state fix: active Spec 427 spec artifacts and new Spec 427 tests are intended branch contents and must be tracked with the runtime/test changes.
• Remaining confirmed in-scope findings: none.
• Residual risks: none inside active scope. Future verified contracts remain separate-spec work.

Merge Readiness Notes

• No confirmed in-scope implementation findings remain at this report stage.
• Browser Smoke Test Gate: passed as not applicable because no rendered UI changed.
• Merge Readiness Gate: passed.