Add some missing feature commits

- 9f7d5b3 - Add load_skill_from_dir() method → [Tools]
- bcbfeba - Pass trace context in MCP tool call's _meta field with OpenTelemetry propagator → [Tools]
- 34da2d5 - Enable dependency injection for agent loader in FastAPI app gen → [Web]

Author: xuanyang15

CHANGELOG.md

@@ -19,9 +19,11 @@
   * Expand LiteLlm supported models and add registry tests ([d5332f4](https://github.com/google/adk-python/commit/d5332f44347f44d60360e14205a2342a0c990d66))
 
 * **[Tools]**
+  * Add `load_skill_from_dir()` method ([9f7d5b3](https://github.com/google/adk-python/commit/9f7d5b3f1476234e552b783415527cc4bac55b39))
   * Agent Skills spec compliance — validation, aliases, scripts, and auto-injection ([223d9a7](https://github.com/google/adk-python/commit/223d9a7ff52d8da702f1f436bd22e94ad78bd5da))
   * BigQuery ADK support for search catalog tool ([bef3f11](https://github.com/google/adk-python/commit/bef3f117b4842ce62760328304484cd26a1ec30a))
   * Make skill instruction optimizable and can adapt to user tasks ([21be6ad](https://github.com/google/adk-python/commit/21be6adcb86722a585b26f600c45c85e593b4ee0))
+  * Pass trace context in MCP tool call's `_meta` field with OpenTelemetry propagator ([bcbfeba](https://github.com/google/adk-python/commit/bcbfeba953d46fca731b11542a00103cef374e57))
 
 * **[Evals]**
   * Introduce User Personas to the ADK evaluation framework ([6a808c6](https://github.com/google/adk-python/commit/6a808c60b38ad7140ddeb222887c6accc63edce9))
@@ -43,6 +45,9 @@
   * Change default BigQuery table ID and update docstring ([7557a92](https://github.com/google/adk-python/commit/7557a929398ec2a1f946500d906cef5a4f86b5d1))
   * Update Agent Registry to create AgentCard from info in get agents endpoint ([c33d614](https://github.com/google/adk-python/commit/c33d614004a47d1a74951dd13628fd2300aeb9ef))
 
+* **[Web]**
+  * Enable dependency injection for agent loader in FastAPI app gen ([34da2d5](https://github.com/google/adk-python/commit/34da2d5b26e82f96f1951334fe974a0444843720))
+
 
 ### Bug Fixes