Summary

Priority: High

Track the backchannel log replay infrastructure added in #14512 to support the rich TUI monitor experience planned for 13.3.

Context

PR #14512 adds foundational server-side plumbing in 13.2:

• Circular replay buffer (1000 entries) in BackchannelLoggerProvider for late-connecting clients
• Pub-sub subscriber model with independent snapshot + live stream per client
• New GetAppHostLogEntriesAsync() RPC method on AppHostRpcTarget and AuxiliaryBackchannelRpcTarget
• DI forwarding pattern for BackchannelLoggerProvider resolution

This is foundational plumbing required by the aspire monitor TUI command being developed in #14402. The APIs added here in 13.2 will be consumed by the TUI client in 13.3.

Related

• Add backchannel log replay for TUI support #14512 — Add backchannel log replay for TUI support (implementation PR)
• [PoC] Add aspire monitor TUI command #14402 — [PoC] Add aspire monitor TUI command (consumer in 13.3)