feat(meta): add project.yaml as version source of truth

Technical project descriptor with game architecture, simulation
parameters, and content model. Version field (0.1.9) is now the
canonical version — Cargo.toml synced, CLAUDE.md and start-sprint
skill updated to reference it during release workflow.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

project.yaml

@@ -0,0 +1,37 @@
+name: The Settled Reach
+version: 0.1.9
+repository: settled-reach
+codename: commonwealth
+
+description: >
+  Top-down immersive sim with occlusion-based detection mechanics and
+  combat elements. Single-character perspective where asymmetric information
+  is the core gameplay mechanic. A Rimworld-style storyteller drives
+  emergent narrative across a detective-smuggler dual-lens campaign.
+
+setting: >
+  Original science fiction universe — the Settled Reach, a network of
+  star systems connected by Founder Gates. Neural lattice technology
+  enables soft immortality, forking, and re-embodiment. The v0.1
+  vertical slice takes place in Sova Transit District, Krenn System.
+
+architecture:
+  client: Godot 4 (GDScript)
+  server: Rust with bevy_ecs (simulation server)
+  transport: subprocess/IPC via TCP with MessagePack serialization
+  protocol: length-prefixed MessagePack frames (4-byte big-endian)
+  determinism: ChaCha20 seeded RNG, deterministic tick processing
+
+simulation:
+  tick_rate: 10 ticks per game-minute
+  time_model: 4 day phases (Morning, Afternoon, Evening, Night)
+  grid: dual-scale (0.5m simulation tiles, 1m visual tiles)
+  visibility: symmetric shadowcasting + forward/peripheral/blind vision cone
+  knowledge: per-entity knowledge graphs with confidence decay
+
+content:
+  format: YAML with JSON Schema validation
+  structure: campaigns/systems/stations/districts hierarchy
+  npcs: 10-axis model (7 essential + 3 supporting) with CombatCapability
+  dialogue: tagged line pools with 4-layer relational filtering
+  population: 30% flat / 50% mundane triangles / 20% intrigue-entangled