Dungeon fishing spots

[stphung]

Intent

Fishing spots inside dungeons — dungeon-exclusive fishing nodes with unique fish/loot, blending the dungeon and fishing systems.

Open questions

• Do spots appear as a room type in procedural dungeon generation?
• Dungeon-only fish species/ranks, or shared with the main fishing table?
• Does fishing consume the dungeon run's time/turns?
• Rewards: dungeon loot, fishing XP, or a mix?

Status: direction chosen, mechanics undesigned. Related: #232 (fish market).