.codex/config.toml already has a [hooks] table

init --harnesses codex writes its registration to .codex/hooks.json. If your repo already declares a [hooks] table in .codex/config.toml, the installer refuses to write. Codex treats both locations as authoritative, and a non-destructive TOML merge would lose your comments and ordering.

Fix. Append our four entries to your existing [hooks] table, then delete .codex/hooks.json so there is one source of truth.

[[hooks.Stop]]
[[hooks.Stop.hooks]]
type = "command"
command = "node ./.codex/hooks/kk-capture.mjs"
timeout = 30

[[hooks.Stop]]
[[hooks.Stop.hooks]]
type = "command"
command = "node ./.codex/hooks/kk-lint-tick.mjs"
timeout = 30

[[hooks.SessionStart]]
[[hooks.SessionStart.hooks]]
type = "command"
command = "node ./.codex/hooks/kk-session-start.mjs"
timeout = 30

[[hooks.SessionStart]]
[[hooks.SessionStart.hooks]]
type = "command"
command = "node ./.codex/hooks/kk-proposal-drain.mjs"
timeout = 30

init --upgrade keeps refreshing the hook scripts under .codex/hooks/; only the registration location is yours to maintain. To uninstall later, drop any line whose command starts with node ./.codex/hooks/kk-.