feat: add setup skill with scripted steps (#258)

Replace inline SKILL.md instructions with executable shell scripts
for each setup phase (environment check, deps, container, auth,
groups, channels, mounts, service, verify). Scripts emit structured
status blocks for reliable parsing.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.claude/skills/setup/scripts/06-register-channel.sh

@@ -0,0 +1,97 @@
+#!/bin/bash
+set -euo pipefail
+
+# 06-register-channel.sh — Write channel registration config, create group folders
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(cd "$SCRIPT_DIR/../../../.." && pwd)"
+LOG_FILE="$PROJECT_ROOT/logs/setup.log"
+
+mkdir -p "$PROJECT_ROOT/logs"
+
+log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] [register-channel] $*" >> "$LOG_FILE"; }
+
+cd "$PROJECT_ROOT"
+
+# Parse args
+JID=""
+NAME=""
+TRIGGER=""
+FOLDER=""
+REQUIRES_TRIGGER="true"
+ASSISTANT_NAME="Andy"
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --jid)              JID="$2"; shift 2 ;;
+    --name)             NAME="$2"; shift 2 ;;
+    --trigger)          TRIGGER="$2"; shift 2 ;;
+    --folder)           FOLDER="$2"; shift 2 ;;
+    --no-trigger-required) REQUIRES_TRIGGER="false"; shift ;;
+    --assistant-name)   ASSISTANT_NAME="$2"; shift 2 ;;
+    *) shift ;;
+  esac
+done
+
+# Validate required args
+if [ -z "$JID" ] || [ -z "$NAME" ] || [ -z "$TRIGGER" ] || [ -z "$FOLDER" ]; then
+  log "ERROR: Missing required args (--jid, --name, --trigger, --folder)"
+  cat <<EOF
+=== NANOCLAW SETUP: REGISTER_CHANNEL ===
+STATUS: failed
+ERROR: missing_required_args
+LOG: logs/setup.log
+=== END ===
+EOF
+  exit 4
+fi
+
+log "Registering channel: jid=$JID name=$NAME trigger=$TRIGGER folder=$FOLDER requiresTrigger=$REQUIRES_TRIGGER"
+
+# Create data directory
+mkdir -p "$PROJECT_ROOT/data"
+
+# Write directly to SQLite (the DB and schema exist from the sync-groups step)
+TIMESTAMP=$(date -u '+%Y-%m-%dT%H:%M:%S.000Z')
+DB_PATH="$PROJECT_ROOT/store/messages.db"
+REQUIRES_TRIGGER_INT=$( [ "$REQUIRES_TRIGGER" = "true" ] && echo 1 || echo 0 )
+
+sqlite3 "$DB_PATH" "INSERT OR REPLACE INTO registered_groups (jid, name, folder, trigger_pattern, added_at, container_config, requires_trigger) VALUES ('$JID', '$NAME', '$FOLDER', '$TRIGGER', '$TIMESTAMP', NULL, $REQUIRES_TRIGGER_INT);"
+
+log "Wrote registration to SQLite"
+
+# Create group folders
+mkdir -p "$PROJECT_ROOT/groups/$FOLDER/logs"
+log "Created groups/$FOLDER/logs/"
+
+# Update assistant name in CLAUDE.md files if different from default
+NAME_UPDATED="false"
+if [ "$ASSISTANT_NAME" != "Andy" ]; then
+  log "Updating assistant name from Andy to $ASSISTANT_NAME"
+
+  for md_file in groups/global/CLAUDE.md groups/main/CLAUDE.md; do
+    if [ -f "$PROJECT_ROOT/$md_file" ]; then
+      sed -i '' "s/^# Andy$/# $ASSISTANT_NAME/" "$PROJECT_ROOT/$md_file"
+      sed -i '' "s/You are Andy/You are $ASSISTANT_NAME/g" "$PROJECT_ROOT/$md_file"
+      log "Updated $md_file"
+    else
+      log "WARNING: $md_file not found, skipping name update"
+    fi
+  done
+
+  NAME_UPDATED="true"
+fi
+
+cat <<EOF
+=== NANOCLAW SETUP: REGISTER_CHANNEL ===
+JID: $JID
+NAME: $NAME
+FOLDER: $FOLDER
+TRIGGER: $TRIGGER
+REQUIRES_TRIGGER: $REQUIRES_TRIGGER
+ASSISTANT_NAME: $ASSISTANT_NAME
+NAME_UPDATED: $NAME_UPDATED
+STATUS: success
+LOG: logs/setup.log
+=== END ===
+EOF