Assisted-by: Claude Opus 4.6 via pi

diff --git a/Cargo.toml b/Cargo.toml
index e7b209e..2d02624 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "serde-kdl2"
 version = "0.1.0"
 edition = "2024"
 description = "Serde integration for KDL (KDL Document Language)"
-license = "MIT OR Apache-2.0"
+license = "MIT"
 repository = "https://github.com/kdl-org/kdl-rs"
 keywords = ["kdl", "serde", "serialization", "config"]
 categories = ["config", "encoding"]
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..397e34a
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Alpha Chen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
index e70da98..bf4b0f9 100644
--- a/README.md
+++ b/README.md
@@ -161,6 +161,13 @@ let s: String = serde_kdl2::to_string_pretty(&config)?;
 let doc: kdl::KdlDocument = serde_kdl2::to_doc(&config)?;
 ```
 
+## AI Usage
+
+I built this crate with substantial help from Claude (Anthropic). The AI
+wrote most of the initial serializer, deserializer, and test code. I directed
+the design, reviewed every change, and iterated on the mapping rules. Commit
+messages note AI assistance with `Assisted-by` footers.
+
 ## License
 
-MIT OR Apache-2.0
+MIT