v0.6.16

Process and Electron cleanup corrections, Windows launcher/path handling, config CLI startup and diagnostic credential redaction. Includes current Pi compatibility automation and consumer-facing exit-code documentation.

Qualified against official Pi 0.86.1 and the maintained fork. Windows qualification is explicitly waived for this rollout; known intermittent policy-coordination and Electron limitations remain tracked in #191. Pi 0.87.0 is a subsequent compatibility candidate.

Published the exact checked npm archive without repacking. SHA256: 75a5c0be00d5307c63fc0b22e790ae2b8fdd7b200820a9b82094dfb86e742815.