Add release notes for KeyPilot 0.1.0

Author: codeafridi

CHANGELOG.md

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+# Changelog
+
+## 0.1.0
+
+Initial public packaging release.
+
+- Added Debian package build support
+- Added package-friendly systemd user service
+- Added public default config and example config
+- Moved custom launcher entries into JSON command arrays
+- Removed machine-specific hard-coded file paths
+- Added MIT license
+- Updated README with source and `.deb` installation instructions

RELEASE.md

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+# KeyPilot 0.1.0 Release Checklist
+
+## Build
+
+```bash
+packaging/deb/build-deb.sh 0.1.0
+```
+
+Output:
+
+```text
+dist/keypilot_0.1.0_all.deb
+```
+
+## Test
+
+```bash
+sudo apt install ./dist/keypilot_0.1.0_all.deb
+sudo usermod -aG input "$USER"
+```
+
+Log out and log back in.
+
+```bash
+mkdir -p ~/.config/keypilot
+cp /etc/keypilot/config.json ~/.config/keypilot/config.json
+systemctl --user daemon-reload
+systemctl --user enable --now keypilot
+systemctl --user status keypilot
+```
+
+Press the Copilot/F23 key and verify that the launcher opens.
+
+## Git
+
+```bash
+git add .
+git commit -m "Prepare KeyPilot 0.1.0 release"
+git tag v0.1.0
+git push
+git push origin v0.1.0
+```
+
+## GitHub Release Notes
+
+Title:
+
+```text
+KeyPilot 0.1.0
+```
+
+Description:
+
+```text
+Initial public release of KeyPilot.
+
+KeyPilot turns the Copilot/F23 key into a customizable launcher on Linux.
+
+Install on Ubuntu/Debian:
+
+sudo apt install ./keypilot_0.1.0_all.deb
+sudo usermod -aG input "$USER"
+
+Then log out and log back in, enable the user service, and press the Copilot key.
+```
+
+Upload:
+
+```text
+dist/keypilot_0.1.0_all.deb
+```