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/compiler_errors/run_examples.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+# Script to run all compiler error examples and see the error messages
+
+cd "$(dirname "$0")/../.."
+
+echo "════════════════════════════════════════════════════════════════"
+echo "STORYBOOK COMPILER ERRORS - EXAMPLES"
+echo "════════════════════════════════════════════════════════════════"
+echo ""
+
+for file in tests/compiler_errors/*.sb; do
+    if [ -f "$file" ]; then
+        echo "═══════════════════════════════════════════════════════════════════"
+        echo "File: $(basename "$file")"
+        echo "═══════════════════════════════════════════════════════════════════"
+        cat "$file" | head -3 | tail -2  # Show the comment lines
+        echo ""
+        cargo run --quiet --bin sb -- validate "$file" 2>&1 || true
+        echo ""
+        echo ""
+    fi
+done
+
+echo "════════════════════════════════════════════════════════════════"
+echo "ALL EXAMPLES COMPLETE"
+echo "════════════════════════════════════════════════════════════════"