chore: bump version to 0.19.0-alpha.10

Version-increment gate for the NatNet server PR (base optitrack-autonomy alpha.9).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: JohnYanxinLiu

.env

@@ -12,7 +12,7 @@ PROJECT_NAME="airstack"
 # If you've run ./airstack.sh setup, then this will auto-generate from the git commit hash every time a change is made 
 # to a Dockerfile or docker-compose.yaml file. Otherwise this can also be set explicitly to make a release version.
 # auto-generated from git commit hash
-VERSION="0.19.0-alpha.9"
+VERSION="0.19.0-alpha.10"
 # Choose "dev" or "prebuilt". "dev" is for mounted code that must be built live. "prebuilt" is for built ros_ws baked into the image
 DOCKER_IMAGE_BUILD_MODE="dev"  
 # Where to push and pull images from. Can replace with your docker hub username if using docker hub.

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `overrides/l4t-px4-realrobot.env` — site-agnostic deployment override for a single real PX4 robot on a Jetson (aarch64/l4t)
 - `integration` test tier (`tests/integration/`, `integration` mark) with a shared `robot_autonomy_stack` fixture (robot container, no sim/GPU)
 - Real-robot PX4 external-vision fusion in `natnet_ros2` (OptiTrack mocap → EKF2): `mavros_gp_origin` (geoid-corrected synthetic GPS origin so `local_position.z` == OptiTrack z, fixing the ~36 m boot offset), `vision_pose_converter`, and a PX4 param **checker** (`px4_param_setter`, `auto_set` off by default; `on_mismatch` warn/halt) — setup guide at `docs/robot/px4_external_vision.md`
+- NatNet server emulator (`optitrack.natnet.emulator`, protocol core) — pure-Python OptiTrack Motive server emulation so `natnet_ros2` can be driven without hardware; host integration tests (`tests/integration/natnet/`) wire it to the robot client
 
 ### Changed