chore: enable ohh feature by default (#272)

Author: elliottneilclark

CLAUDE.md

@@ -49,12 +49,12 @@ rs-poker is a Rust poker library
 ### Feature Flags
 
 ```toml
-default = ["arena", "serde", "omaha"]
+default = ["arena", "serde", "omaha", "open-hand-history"]
 arena                      # Multi-agent simulation
 serde                      # JSON serialization
 omaha                      # Omaha (PLO4/PLO5/PLO6/PLO7) hand evaluation
-arena-test-util            # Testing helpers with approx comparisons
 open-hand-history          # OHH format support
+arena-test-util            # Testing helpers with approx comparisons
 open-hand-history-test-util  # OHH testing helpers
 ```
 

Cargo.toml

@@ -54,7 +54,7 @@ tikv-jemallocator = { version = "~0.6.0", optional = true, features = [
 ] }
 
 [features]
-default = ["arena", "serde", "omaha"]
+default = ["arena", "serde", "omaha", "open-hand-history"]
 omaha = []
 serde = ["dep:serde", "dep:serde_json"]
 arena = [

README.md

@@ -283,8 +283,8 @@ Avoids the O(N!) complexity of traditional ICM by simulating all-in confrontatio
 | `arena` | Yes | Multi-agent simulation framework, CFR solver |
 | `serde` | Yes | JSON serialization for hands, game states, configs |
 | `omaha` | Yes | Omaha (PLO4/PLO5/PLO6/PLO7) hand evaluation |
+| `open-hand-history` | Yes | Open Hand History format import/export |
 | `rsp` | No | CLI binary with all features enabled |
-| `open-hand-history` | No | Open Hand History format import/export |
 | `arena-test-util` | No | Approximate comparison helpers for tests |
 | `open-hand-history-test-util` | No | OHH format testing helpers |