Proof: dynamic OSS contract gate

This MR changes only the live gitlab-org/cli OSS contract manifest. CompatGuard should dynamically compare this source branch against main, find the changed manifest from the MR diff, use the nearest Orbit fixture, and post a HIGH compatibility gate with dynamic replay and repository memory.

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🛡️ CompatGuard Gate Status: ❌ BLOCK MERGE — Risk Score 97/100

Auto-updated by CompatGuard MR Gatekeeper · Pipeline #2623964361

Blocking issues (must resolve before merge)

Priority	Issue	Contract	Owner(s)
🔴 P0	#44 — UserResponse.email removed — add deprecated alias	UserResponse.email (REST/TS)	@api-platform, @frontend-team, @billing-platform
🔴 P0	#45 — GraphQL User.email removed — add @deprecated alias	GraphQL.User.email	@api-platform, @mobile-team, @frontend-team
🟠 P1	#46 — Env.SENDGRID_API_KEY removed — coordinate migration	Env.SENDGRID_API_KEY	@notifications, @platform

Probe summary

Probe	Consumer	Result
1-A	frontend/Profile.tsx	❌ FAIL
1-B	billing/customerSync.ts	❌ FAIL — repeat of issue #184
2-A	frontend/ProfileQuery.graphql	❌ FAIL
2-B	mobile/UserSettings.graphql	❌ FAIL — MR !91 precedent violated
3-A	api/emailService.ts	❌ FAIL
3-B	.gitlab-ci.yml	❌ FAIL — repeat of pipeline #5521

See the full gate comment for evidence, required actions, and the pre-merge check script.