Reliability and maintenance update.
- Prevent shell-client pipe stalls, partial-response hangs, and failed-start process leaks.
- Release mouse buttons when clicks are cancelled, and fail scoped screenshots without capturing the whole desktop.
- Reject invalid template search regions and improve save-result verification.
- Preserve configuration files atomically, recover malformed cached state, and redact quoted JSON credentials.
- Correct stale documentation, permission guidance, and window-position bookkeeping.
Validation: 90 portable regressions passed across supported MCP generations; the four-job CI matrix, package metadata/privacy checks, and installed-package MCP discovery passed. Additional native click/capture/save acceptance is deferred to follow-up testing.