Update LICENSE and NOTICE file

LICENSE

@@ -200,3 +200,32 @@
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
+
+================================================================================
+Contributions from other Apache Software Foundation projects
+================================================================================
+
+This product incorporates project-agnostic code contributed from
+other Apache Software Foundation projects:
+
+- Apache Airflow (https://airflow.apache.org/) — the framework that
+  became this project was first developed and proven within Apache
+  Airflow, already structured under Apache License 2.0 for reuse
+  inside and outside the ASF.
+- Apache Groovy (https://groovy.apache.org/) — contributions from
+  the Groovy PMC at the early stage of this project.
+
+Apache Airflow
+Copyright 2016-2026 The Apache Software Foundation
+
+Apache Groovy
+Copyright 2003-2026 The Apache Software Foundation
+
+================================================================================
+Third-party content
+================================================================================
+
+This product includes substantially-modified content adapted from the
+"skill-creator" skill in the awesome-claude-skills repository by
+Julius Brussee (https://github.com/JuliusBrussee/awesome-claude-skills),
+licensed under the Apache License, Version 2.0.

NOTICE

@@ -3,30 +3,3 @@ Copyright 2026 The Apache Software Foundation
 
 This product includes software developed at
 The Apache Software Foundation (https://www.apache.org/).
-
-================================================================================
-Contributions from other Apache Software Foundation projects
-================================================================================
-
-This product incorporates project-agnostic code contributed from
-other Apache Software Foundation projects:
-
-- Apache Airflow (https://airflow.apache.org/) — the framework that
-  became this project was first developed and proven within Apache
-  Airflow, already structured under Apache License 2.0 for reuse
-  inside and outside the ASF.
-- Apache Groovy (https://groovy.apache.org/) — contributions from
-  the Groovy PMC at the early stage of this project.
-
-================================================================================
-Third-party content
-================================================================================
-
-This product includes substantially-modified content adapted from the
-"skill-creator" skill in the awesome-claude-skills repository by
-Julius Brussee (https://github.com/JuliusBrussee/awesome-claude-skills),
-licensed under the Apache License, Version 2.0. See
-.claude/skills/write-skill/LICENSE.txt for the full upstream license
-text and .claude/skills/write-skill/SKILL.md § "Provenance" for the
-specific upstream commit and the scope of the framework's
-modifications.

skills/write-skill/SKILL.md

@@ -43,10 +43,6 @@ This skill is adapted from the **`skill-creator`** skill in the
 repository, distributed under the Apache License 2.0. The
 upstream commit at the time of adoption is
 [`5380239`](https://github.com/JuliusBrussee/awesome-claude-skills/tree/5380239b724883543db9e9e2de56c4dd8796090d/skill-creator).
-See [`LICENSE.txt`](LICENSE.txt) for the full upstream licence
-text and the project root [`NOTICE`](../../NOTICE) for the
-attribution under the *"Third-party content"* section, per
-[ASF licensing-howto guidance](https://infra.apache.org/licensing-howto.html).
 
 The framework's adaptations of the upstream content are
 substantial. They are summarised in the bullets below, in