Every reply paid one extra Discord API round trip: the text send path,
the voice send path, and the edit path each called fetch_message() just
to obtain a reference or an editable handle. Discord resolves
message_reference payloads from ids alone, and PartialMessage.edit()
works without a fetch — so build MessageReference directly (with
fail_if_not_exists=False, preserving the deleted-target behavior the
existing send-side 10008 retry already covered) and use
channel.get_partial_message() for edits. Overflow continuations keep
threading via an ids-built reference fallback for PartialMessage.
Measured by call count (deterministic): reply sends and edits now make
ZERO fetch_message calls where they made 1 per reply and 1 per edit
(including every streaming edit tick).
Tests: pin that first-mode replies construct the reference without any
fetch, deleted-target retry test updated to assert fetch await_count==0
(retry now happens purely send-side), overflow/edit mocks retargeted
from fetch_message to get_partial_message (any fetch regression breaks
all five). Note: 4 discord-suite failures are pre-existing ordering
flakes — identical with the change stashed on clean main.
01ca8be207