KoHs Inventory Tweaks

Performance and input

• Moves first-open class, recipe-book, texture, and custom-surface preparation to a once-per-world warmup. The warmup never opens a screen, moves the cursor, changes a slot, or sends a packet.
• A sole physical Inventory press can open the ordinary local player inventory at the end of the current GLFW input batch instead of waiting for the next 20 TPS client tick.
• If offhand, hotbar, attack, use, drop, pick, or another non-movement action shares the batch, KoHs leaves the complete queue to Vanilla. No action is deferred, retried, duplicated, or reordered.
• Adds a visible readout explaining whether the last open was immediate or fell back because another binding shared the batch.

Cursor Landing

• Adds item-following landing for the player main inventory and hotbar, selected from the main-hand item.
• Excludes offhand, armor, crafting, and result slots.
• Resolves the target before the screen is visible, with one cursor placement and no interpolation, verification loop, or continuous pull.

Interface and validation

• Removes obsolete Profiles and Smart Highlighter entry points while safely migrating older configuration files.
• Keeps the 200% default inventory scale and Affect All Containers enabled on new installations.
• Verified every 26.1.2 mixin target and injection point against the real client JAR.
• Offline singleplayer aggressive stress: 212/212 successful opens, 0 misses, 0 assertion failures, 0 repeated cursor writes, and 0 fast-path mismatches.

Client-only. No custom networking channel, inventory packet, slot click, swap, cooldown, or server state is added by the fast-open controller.