Architecture Decisions Confirmation List [CONFIRM WITH DEVELOPER]

The following design decisions and operational assumptions were deduced from the codebase and should be confirmed by the primary engineer:

Item #	Topic	Deduced Design Choice	Location in Codebase	Rationale to Confirm
C1	Storage Tiering	Defaulting to in-memory MemoryStore with flat segment DiskStore fallback instead of Redis.	src/cache/store.ts	Selected to achieve true sub-millisecond lookups (< 0.1ms) without external network hops.
C2	Coalescing Policy	In-flight leader-follower stream fanout instead of queuing in Redis/RabbitMQ.	src/proxy/coalesce.ts	Eliminates distributed locking overhead; maximizes local proxy throughput.
C3	Purge Strategy	Synchronous purge for < 50 items; asynchronous worker queue for > 50 items.	src/purge/api.ts:25	Prevents event loop blocking during massive tenant or tag purge operations.
C4	AIML Tier Role	Tier A/B models strictly advisory; zero AI models placed on critical latency path.	aiml/MODEL_CARD.md	Ensures strict deterministic RFC 9111 correctness and avoids latency jitter.
C5	Compression Cap	Brotli compression level capped at 6 instead of 11.	src/compression/codecs.ts	Balances CPU consumption against byte savings during high-throughput edge proxying.