CONF-1947: Add Solana Pay rollout diagnostics in Core

[pedronfigueiredo]

Summary

• Keep Solana Pay admission fail-closed inside Core at first executable-quote creation while allowing already-admitted submission, observation, and recovery after rollback.
• Align diagnostics with the transaction-owned metamaskPay.solanaExecution checkpoint introduced by the rebased parent branch.
• Persist stable categorical error codes and expose privacy-safe support/lifecycle projections containing statuses and identifier-presence booleans, never raw identifiers or free-form errors.
• Emit deduplicated lifecycle transitions for external Solana source, Relay, notification, follow-up, and recovery states; unknown Relay statuses remain fail-closed.

Commits

• 6d31740aa0 — adapt Solana rollout diagnostics to the narrowed transaction-owned execution contract.
• 5728f2cb3c — verify admission-only gating and continued execution after rollback.
• bb42d2630d — compare every mutable emitted lifecycle field and cover categorical transitions.

Standards alignment

• Feature-flag admission follows the existing internal Core remote-feature-flag pattern; client visibility remains client-owned rather than going through a public controller flag middleman.
• Analytics transport follows existing EVM/client patterns. Clients enrich the categorical payload using their existing transaction and confirmation correlation.
• The dedicated categorical event exists only for non-EVM intermediate and recovery states that ordinary EVM transaction lifecycle events do not represent.
• The custom durable analytics UUID and its validation/generation contract were removed.
• Rollout/analytics prose was removed from ARCHITECTURE.md; that document retains only the execution and lifecycle architecture inherited from CONF-1944: Run the one-attempt Solana Pay path and recovery loop #10273.

Validation

• yarn workspace @metamask/transaction-pay-controller run test — passed with 100% statements, lines, and functions; 99.47% branches.
• yarn workspace @metamask/transaction-controller run test — passed.
• yarn build — passed.
• Targeted ESLint and Prettier checks — passed.
• yarn changelog:validate — passed.
• TransactionPayController messenger action-type check — passed.
• git diff --check — passed.

Solana Pay ticket and PR index

• CONF-1943 — Persist the Solana Pay intent model in TransactionPayController

  • MetaMask/core — #10272 — CONF-1943: Persist chain-agnostic Solana Pay intents
    • Branched from main

• CONF-1944 — Run the one-attempt Solana source path and recovery loop in Core

  • MetaMask/core — #10273 — CONF-1944: Run the one-attempt Solana Pay path and recovery loop
    • Branched from MetaMask/core#10272

• CONF-1945 — Ship the Solana Pay source picker and confirmation flow in Extension

  • MetaMask/metamask-extension — #46396 — CONF-1945: Ship the Solana Pay flow in Extension
    • Branched from main

• CONF-1946 — Ship the Solana Pay source picker and confirmation flow in Mobile

  • MetaMask/metamask-mobile — #36361 — CONF-1946: Ship the Solana Pay flow in Mobile
    • Branched from main

• CONF-1947 — Wire rollout flags, analytics, and support diagnostics for Solana Pay

  • MetaMask/core — #10274 — CONF-1947: Add Solana Pay rollout diagnostics in Core
    • Branched from MetaMask/core#10273
  • MetaMask/metamask-extension — #46397 — CONF-1947: Add Solana Pay rollout diagnostics in Extension
    • Branched from MetaMask/metamask-extension#46396
  • MetaMask/metamask-mobile — #36362 — CONF-1947: Add Solana Pay rollout diagnostics in Mobile
    • Branched from MetaMask/metamask-mobile#36361