A handfull of ui bug fixes:

Duplicate HP level-up cards. +10 Max HP and +15 Max HP could appear on the same level-up screen. Now deduped by category (also covers +2/+3 Weapon), so only one variant of a stat shows.

Shop appearing over the level-up screen. Input is now held locked through the whole boss-reward, level-up, and shop sequence, plus a short tap-settle window on overlay buttons so a stray tap can’t land on a screen that just appeared. (Timing-related; safe but wants a device playtest to fully confirm.)

Bombs damaging the boss from anywhere. Boss now only takes bomb damage when it’s actually within a blast radius (one 10% chunk per bomb that reaches it).

Confusing “+3 Starting Block”. Renamed to “+3 Starting Armor” (“Begin each floor with 3 armor (shields)”), matching the HUD’s “Armor” label. Also fixed the meta-shop “+2 Starting Block”.

Sage’s Crystal / maxed items still offered. Maxed and one-time-owned items are now filtered out of the shop roll.

Necronomicon reappearing after purchase. Owned one-time relics excluded from the shop roll.

Missed level-up at 78/78. Many XP sources (skull/bomb kills, Chain Reaction, Cursed Knowledge, scrolls) never re-checked the threshold. The turn now always re-derives owed level-ups and drains all of them.

Boss “Blight” (potion rot) did nothing. The loop scanned for a skull-type boss tile that never exists (the boss lives in “boss” grid cells). Rewrote it to scan the boss footprint and rot adjacent potions, with a “Potions rot into skulls!” message for feedback. Removed the dead duplicate block.

Bombs not chaining. A bomb caught in another bomb’s blast now detonates too (flood-fill).