sensor: historical_figure() - the legends read (P1)

[alexanderolvera]

citizen only works on living units, so a dwarf becomes unreachable the moment they die — and this genre is mostly about the dead.

Returns

Name (Dwarven + English), race/caste, birth and death (year, cause, slayer), entity affiliations and positions held, kills, notable relationships, worshipped deities, site links.

Also makes siege generals, visiting bards, and monster hunters writable — figures site_history already names but cannot drill into.

Notes

Caps + *_truncated flags per house convention; an old world's figure can have hundreds of kills.

Depends on #103 for a discoverable hf_id input.