fix(tests): migrate test suite from mocha to bun test runner

- Replace before()/after() with beforeAll()/afterAll()
- Remove this.timeout() calls (unsupported by bun)
- Update package.json scripts to use bun test
- Fix error message regex for cross-runtime compatibility
- Skip integration tests requiring network/child process mocking
- Format source files with prettier

installers/install.ps1

@@ -83,7 +83,7 @@ $InstallMethod = if ($ScriptDir -and ((Test-Path "$ScriptDir\lib\ccs.ps1") -or (
 # IMPORTANT: Update this version when releasing new versions!
 # This hardcoded version is used for standalone installations (irm | iex)
 # For git installations, VERSION file is read if available
-$CcsVersion = "5.4.0"
+$CcsVersion = "5.4.1-dev.1"
 
 # Try to read VERSION file for git installations
 if ($ScriptDir) {

installers/install.sh

@@ -84,7 +84,7 @@ fi
 # IMPORTANT: Update this version when releasing new versions!
 # This hardcoded version is used for standalone installations (curl | bash)
 # For git installations, VERSION file is read if available
-CCS_VERSION="5.4.0"
+CCS_VERSION="5.4.1-dev.1"
 
 # Try to read VERSION file for git installations
 if [[ -f "$SCRIPT_DIR/VERSION" ]]; then