Queued IB startup trades can arrive after samplerd has advanced
the current 1s bar. Writing them into that bar creates a false
price and volume spike. Compare each stamped trade with the
current bar before updating either SHM buffer. Warn whenever a
next-slot trade must wait for samplerd; skip other mismatches
and leave untimestamped feeds on the receive-time path.
Add focused tests for epoch units, queued trades, and warning
before the next-slot wait. Note that incomplete provider bars
still need a correction path for late trades.
Prompt-IO: ai/prompt-io/codex/20260925T190523Z_c0dae89a_prompt_io.md
(this patch was generated in some part by `codex` using `gpt-6` (`openai`))
Gud Boi
a26e060c3a