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#!/usr/bin/env bash
set -Eeuo pipefail
# SessionStart-hook wrapper around the bin/ implementation memory-status.sh --
# surfaces the project's Claude memory status to the user. Wired in the user-level
# settings.json (hooks.SessionStart).
# - reads the hook payload as JSON on stdin (.cwd) and runs the util with it.
# - the util prints the memory status block (the CLAUDE.md memory rows); this
# wrapper wraps it in a single systemMessage.
# - when cwd is $HOME, appends a warning: $HOME is not treated as a project, so
# home skills (~/.claude/skills) only load with --add-dir $HOME. The hook can't
# tell whether that flag was passed (no payload exposes it), so it always warns.
# - ANSI-colours the message: memory rows cyan, a "(missing)" row red with an ❌,
# the $HOME warning yellow with ⚠️. jq encodes the ESC byte as an escape in the
# JSON; the harness turns it back into a real ESC when it prints the message.
# Colours wrap each line around its already-computed padding, so the util's
# column alignment stays intact (ANSI bytes never count toward printf's width).
# - leads the message with a newline so the harness's "SessionStart:... says:"
# header sits on its own line and the table starts at column 0.
# - never blocks the session: a util failure yields an empty message.
self=$(realpath -- "${BASH_SOURCE[0]}")
util="$(dirname -- "$(dirname -- "$self")")/bin/memory-status.sh"
input=$(cat)
cwd=$(jq --raw-output '.cwd // empty' <<<"$input" 2>/dev/null) || cwd=""
[ -n "$cwd" ] || cwd=$PWD
esc=$'\033'
cyan="${esc}[36m" red="${esc}[31m" yellow="${esc}[33m" reset="${esc}[0m"
out=$(bash "$util" "$cwd") || out=""
# Colour the memory block line by line: a "(missing)" row red with an ❌ error
# sign, every other row cyan.
if [ -n "$out" ]; then
block=""
while IFS= read -r line; do
[ -n "$block" ] && block+=$'\n'
case $line in
*'(missing)'*) block+="${red}❌ ${line}${reset}" ;;
*) block+="${cyan}${line}${reset}" ;;
esac
done <<<"$out"
out=$block
fi
if [ "$cwd" = "$HOME" ]; then
warn="⚠️ Started from \$HOME: home skills (~/.claude/skills) don't auto-load here."
warn+=$'\n'"⚠️ Did you think to --add-dir \$HOME? Restart with it to surface them."
[ -n "$out" ] && out+=$'\n\n'
out+="${yellow}${warn}${reset}"
fi
[ -n "$out" ] && out=$'\n'$out
jq --null-input --arg msg "$out" '{systemMessage: $msg}'
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