Simplify annotation vote to yes/no/can't-tell (ladder UI preserved on branch ladder-voting)

Annotation mode: seeded depth-click voting, bucket-synced storage

Decoded hierarchy ladders: click a code to read its path in plain English

Swap to multitask-2ep + depth/completion modes (app.py)

Decode composite (colon) Iconclass codes part-by-part

Evolve smoke into full demo: gradio.Server + Tufte frontend + iconclass decoding + examples

minimal ZeroGPU smoke test for the 9B