docs(track-a): promote P2 f50090 downstream target - #489
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Coordinator promotion for researcher Draft #488 /
OTC-20260817-track-a-p2-f50090-downstream.Decision:
ACCEPT_WITH_EDITS.Trusted base:
main@696db6ce34acd23a3d0081b9b1b94e1eabbe1cbe.Source final head:
76460840d583218dde1b268f4e46e17a074f0abf.Independent primary review accepts the bounded exact-client path:
canonical same message -> 0xf50090 -> field decomposition -> writer +0x58 guard == 0xcb2960 -> payload pointer from message+0x10 + length from message+0x18 -> underlying receiver writer+0x18 -> exact target 0x4dd250.Exact wrapper
0xcb2960independently cross-checks the same payload-pointer/length and underlying-receiver forwarding contract. Constructor0x1960340is promoted only as supporting structural ownership evidence (vptr 0x2f69d48, nested member +0x18, owner/control +0x20), not as proof of the current writer dynamic type.Still UNKNOWN: writer and underlying receiver exact dynamic types; semantic role of
0x4dd250; final binary/socket write, final socket ownership, framing, sequence, compression, encryption.Source exact-head validation: Track A governance
32037873578 = SUCCESS; CI32037873878;CI / Requiredjob95411808828 = SUCCESS; source final diff exactly 3 durable P2 files; reviews/threads 0/0; one-shot workflow/script removed. E2ENOT_APPLICABLEbecause this is static exact-file/disassembly evidence only.This PR archives #488 and removes its active task. It deliberately does not create another research task in this invocation. A later invocation may continue at exact target
0x4dd250.Merge only after exact-head promotion governance/CI, review hygiene and current-main freshness pass.