feat(simulation): add YAML content loader with hot-reload (#326)
LinePool system parses dialogue.yaml and monologue.yaml into indexed
BTreeMap structures. Supports 4-layer query filtering (access >
situation > trust > topic+mood) per D-028. Hot-reload via timestamp
polling every 20 ticks (dev-only). Graceful failure preserves
previous content on reload error.
30+ tests covering enum parsing, index building, query filtering,
monologue fallback, and content watching.
Ref: D-028, D-032, D-035, D-041
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.6
91d6b1b1cb