Trade: Add “Trade” button to open the official trade site pre‑filtered for the selected item (Whisper is obsolete after Merchant Chest) #9429
Description
Problem / Context
With the new Merchant Chest, the classic “whisper to buy” flow is effectively obsolete. The current PoB Trader UI still relies on Whisper, and finding the exact item on the official trade site is cumbersome because the generated query is not precise or does not match the selected item well.
Goal
Provide a direct way to open the official GGG trade site with filters that match the selected item as closely as possible, to quickly locate the exact listing or a near‑exact match.
What I implemented
Added a “Trade” button next to the Whisper button in the Trader results row.
When clicked, it opens the official trade site using a query URL built from the selected item.
The query is built using:
item base/type and rarity
exact numeric values for mods
mod type preference (Implicit/Explicit/Scourge/Eater/Exarch/Synthesis) to avoid wrong mappings
inversion handling (increased/reduced, more/less, faster/slower)
enchant & crucible mods
corrupted state
engine="new" for proper rendering
Why this helps
This makes trade searching practical again: instead of copying a whisper, you can open the trade search already filtered to the selected item and jump directly to the listing.