fix: Reduce package size from 16.6MiB to 22.6KiB for crates.io

- Add exclude field to Cargo.toml (more reliable than .cargoignore)
- Exclude target/, examples/, and documentation files
- Package now 22.6KiB compressed (was 16.6MiB)
- Well under 10MiB crates.io limit

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: SuperInstance

crates/constraint-theory-core/.cargoignore

@@ -1,5 +1,11 @@
 # Ignore build artifacts
-/target/
+target
+
+# Ignore examples (reduce package size)
+examples
+
+# Ignore test artifacts
+Cargo.lock
 
 # Ignore documentation files (not needed in crate)
 CHANGELOG.md
@@ -13,8 +19,8 @@ ROUND_*.md
 TUTORIAL_ROUND_8.md
 
 # Ignore development files
-/.github/
-/.git/
+.github/
+.git/
 .gitignore
 .cargo/
 

crates/constraint-theory-core/Cargo.toml

@@ -8,6 +8,25 @@ license = "MIT"
 repository = "https://github.com/SuperInstance/Constraint-Theory"
 documentation = "https://docs.rs/constraint-theory-core"
 homepage = "https://constraint-theory.superinstance.ai"
+exclude = [
+    "target/*",
+    "examples/*",
+    "CHANGELOG.md",
+    "OPTIMIZATION_ROADMAP.md",
+    "PERFORMANCE_ANALYSIS_SUMMARY.md",
+    "PERFORMANCE_REPORT_ROUND_8.md",
+    "PROFILING_GUIDE.md",
+    "QUICK_REFERENCE.md",
+    "RELEASE_NOTES_v1.0.0.md",
+    "ROUND_*.md",
+    "TUTORIAL_ROUND_8.md",
+    ".github/*",
+    ".git/*",
+    ".gitignore",
+    ".cargo/*",
+    ".vscode/*",
+    ".idea/*",
+]
 
 [dependencies]