feat: implement storybook DSL with template composition and validation

Add complete domain-specific language for authoring narrative content for
agent simulations.

Features:
- Complete parser using LALRPOP + logos lexer
- Template composition (includes + multiple inheritance)
- Strict mode validation for templates
- Reserved keyword protection
- Semantic validators (trait ranges, schedule overlaps, life arcs, behaviors)
- Name resolution and cross-reference tracking
- CLI tool (validate, inspect, query commands)
- Query API with filtering
- 260 comprehensive tests (unit, integration, property-based)

Implementation phases:
- Phase 1 (Parser): Complete
- Phase 2 (Resolution + Validation): Complete
- Phase 3 (Public API + CLI): Complete

BREAKING CHANGE: Initial implementation

tests/examples/name_resolution.sb

@@ -0,0 +1,76 @@
+// Test name resolution and duplicate detection
+
+// These are all unique names - should register successfully
+character Alice {
+    age: 30
+    name: "Alice Smith"
+}
+
+character Bob {
+    age: 35
+    name: "Bob Jones"
+}
+
+template PersonTemplate {
+    age: 18..80
+    health: 0.0..1.0
+}
+
+enum Status {
+    active,
+    inactive,
+    pending
+}
+
+life_arc AgeProgression {
+    state young {
+        on age > 18 -> adult
+    }
+    state adult {
+        on age > 65 -> senior
+    }
+    state senior {}
+}
+
+schedule DailyRoutine {
+    06:00 -> 08:00: wake_up
+    08:00 -> 17:00: work
+    17:00 -> 22:00: evening
+    22:00 -> 06:00: sleep
+}
+
+behavior SimpleBehavior {
+    walk_around
+}
+
+institution Library {
+    name: "City Library"
+    capacity: 100
+}
+
+relationship Friendship {
+    Alice
+    Bob
+    bond: 0.8
+}
+
+location Park {
+    name: "Central Park"
+}
+
+species Human {
+    lifespan: 80
+}
+
+// All names above are unique and should be registered in the name table
+// The name table can be queried by kind:
+// - Characters: Alice, Bob
+// - Templates: PersonTemplate
+// - Enums: Status
+// - LifeArcs: AgeProgression
+// - Schedules: DailyRoutine
+// - Behaviors: SimpleBehavior
+// - Institutions: Library
+// - Relationships: Friendship
+// - Locations: Park
+// - Species: Human