test(shell): add fish regressions

fix(shell): capture full bash commands

test(db): add sqlite busy detection coverage

docs(readme): document Ctrl+R repeat behavior

chore: improve release changelog formatting

docs(readme): guard manual init snippets

chore(lint): tune golangci configuration

Enable additional checks and formatter settings, and update exclusions
for known false positives in this codebase.

Add mnd ignore entries for 0o-prefixed file mode literals used in Go
1.13+ style.

docs(readme): add prebuilt binaries section

chore: set changelog sorting to newest first