Adds a read-only contacts dedupe preview command with JSON/table output, generated command docs, README/spec docs, and changelog credit for the extracted idea from #116.\n\nCo-authored-by: Rohan Patnaik <rohan-patnaik@users.noreply.github.com>
Adds Google Sheets conditional formatting and alternating color banding commands, with force-guarded clears, docs, regression tests, and live Google smoke verification.\n\nCo-authored-by: gobang <50824182+codBang@users.noreply.github.com>
Adds header-safe table data row clearing for Google Sheets tables, including --force enforcement, footer-skip range calculation, docs, tests, and live Google smoke verification.
Adds Google Sheets table list/get/create/delete commands, local table column type validation, generated command docs, and a dedicated Sheets tables docs page.\n\nCo-authored-by: Pedro Henrique Gomes Venturott <27008096+Pedrohgv@users.noreply.github.com>
