[Sync] llm stuff

common/.config/git/hooks/prepare-commit-msg

@@ -0,0 +1,36 @@
+#!/bin/sh
+# Prefill the commit editor from pending Claude commit messages (one-shot).
+#
+# Claude sessions save suggestions with `~/.config/git/claude-commit-msg save` -- one file per
+# message under $(git rev-parse --git-path CLAUDE_COMMIT_MSG.d)/, tagged with the paths it
+# describes. On the next `git commit` / lazygit `C` this pastes the message(s) whose paths are
+# part of the commit above git's comment block, then consumes them (moved to used/). Several
+# sessions can hand off in parallel without overwriting each other.
+#
+# Falls back to the legacy single file $(git rev-parse --git-path CLAUDE_COMMIT_MSG) when the
+# CLI is not deployed on this host (not re-stowed yet). Never exits non-zero: a helper problem
+# must not abort a commit.
+msg_file=$1
+source=$2
+
+# Only prefill a fresh editor session -- skip -m/-F (message), merge, squash, amend (commit).
+case "$source" in
+    ""|template) ;;
+    *) exit 0 ;;
+esac
+
+cli="$HOME/.config/git/claude-commit-msg"
+if [ -f "$cli" ] && command -v python3 >/dev/null 2>&1; then
+    python3 "$cli" prefill "$msg_file" "$source"
+    exit 0
+fi
+
+# --- legacy fallback: the single one-shot file ---
+suggestion=$(git rev-parse --git-path CLAUDE_COMMIT_MSG)
+[ -s "$suggestion" ] || exit 0
+
+tmp=$(mktemp) || exit 0
+{ cat "$suggestion"; printf '\n'; cat "$msg_file"; } > "$tmp" &&
+    mv "$tmp" "$msg_file" &&
+    mv "$suggestion" "$suggestion.last"
+exit 0