Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Replace 'Disclaimer' warnings with 'Public Preview' notices across
README, site docs, release notes template, and HTML version selector.
Drop 'Use at your own risk' language and tone down to reflect public
preview status. Fix 'SDKS' typo to 'SDKs'.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Update the snapshot version in README.md from 0.2.1-java.0-SNAPSHOT to
0.2.3-java.1-SNAPSHOT to match the current pom.xml. Add a sed command
to the publish-maven workflow to update the snapshot version during
releases, preventing it from going stale again.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

…lder

Replace ${project.version} with a real version number (0.2.2-java.1) in
jbang-example.java since this file is not Maven-filtered. Also add a
fallback sed pattern in the release workflow to handle the placeholder
during the transition.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Fix jbang-example.java to use actual version instead of Maven placeholder

Fix stale snapshot version in README and automate updates

Update disclaimer from pre-GA to public preview

Agent-Logs-Url: https://github.com/github/copilot-sdk-java/sessions/a5638a0d-f412-4810-b724-45bc5f10438d

Co-authored-by: edburns <75821+edburns@users.noreply.github.com>

Fix cross-platform process creation in tests: use `cmd /c more` on Windows

On Windows, Java's ProcessBuilder cannot directly run shell wrappers
like `npx` (installed as npx.cmd) or Unix commands like `cat`. Tests
that used these commands failed with "Cannot run program" errors.
Additionally, Unix-style paths like "/nonexistent/copilot" are not
absolute on Windows, causing assertThrows(IOException) tests to pass
unexpectedly when CliServerManager wrapped them with "cmd /c".

Changes:
- CapiProxy: use "cmd /c npx" on Windows to launch the test harness
- CliServerManagerTest: replace "cat" with cross-platform dummy process;
  use a platform-appropriate nonexistent absolute path so IOException
  is thrown on all platforms
- JsonRpcClientTest: replace "cat" with cross-platform dummy process

All changes use runtime os.name detection and preserve existing
behavior on Linux and macOS. Full test suite passes on all platforms
(556 tests, 0 failures, 0 errors).

…fixes

Fix Windows test compatibility for ProcessBuilder usage