Reimplements core Discord fixes from #25277 #25523 #25575 #25588 #25731 with expanded tests. - thread proxy-aware fetch into inbound attachment/sticker downloads - fetch /gateway/bot via proxy dispatcher before ws connect - wire statusReactions emojis/timing overrides into controller - compact model-picker custom_id keys with backward-compatible parsing Co-authored-by: openperf <[email protected]> Co-authored-by: chilu18 <[email protected]> Co-authored-by: Yipsh <[email protected]> Co-authored-by: lbo728 <[email protected]> Co-authored-by: s1korrrr <[email protected]>