Extend content loader to read and instantiate real YAML content into
ECS entities. 2-phase spawn pipeline: Phase 1 creates entities with
core components (Want, Tolerance, Contentment, Personality, Tells,
Skills), Phase 2 resolves cross-references (Relationships, Secrets,
Information via KnowledgeGraph, DailyRoutine).
Loads enums, entity attributes, pools, templates, triangles, and NPC
profiles. Handles stub files gracefully. 7 integration tests against
real content files plus edge case tests for invalid data.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements tickets #237 and #238 for Sprint 3:
- Add pathfinding crate dependency for A* algorithm
- PathRequest component triggers compute_paths system which uses
cardinal-neighbor A* with manhattan distance heuristic
- ComputedPath component with step navigation (next_step, advance,
is_complete) and PathBlocked marker for no-route cases
- MovementSpeed component throttles NPC movement (ticks_per_step)
- follow_paths system advances NPCs along computed paths, creating
MoveIntent per step; cleanup_path_blocked removes markers after
one tick
- System ordering: input → compute_paths → follow_paths →
validate_movement → cleanup_path_blocked → advance_tick
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>