Release Pack & Sort v0.8.9

[dbilici]

Summary

• redesign the F8 sort settings panel with a cleaner, more compact layout
• replace the red slot-lock badge with a transparent lock glyph aligned to the slot's upper-right corner
• fix the Vanilla 15 inventory background and hide inactive HUD controls in that mode
• simplify the Mods configuration screen by removing settings already managed in game
• migrate HUD preferences to dedicated client-local storage
• bump the release to v0.8.9 and standardize the author field as k0za1ak

Why

The previous controls duplicated in-game settings and made the configuration screen intimidating. The lock indicator and Vanilla HUD also needed visual alignment fixes before the public Workshop update.

Validation

• tested the lock indicator, Vanilla 15 inventory, 2 x 12 HUD, F8 settings panel, and simplified Mods configuration screen in game
• public Steam Workshop item updated with v0.8.9
• clean Workshop package built and all 13 runtime files passed checksum verification
• git diff --check passed

User impact

Existing client HUD preferences are migrated. Server-authoritative sorting and the multiplayer protocol are unchanged.