refactor: migrate runtime console.log calls to structured logger (#397)

scripts/no-console.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+# Fail if runtime source code uses console.* directly.
+# Runtime code should use createLogger() from src/logger.ts instead.
+#
+# Excluded:
+#   - CLI commands (src/cli*, onboard, setup) -- user-facing terminal output
+#   - Test files (*.test.ts, mock-*) -- test output
+#   - banner.ts -- ASCII art display
+#   - whatsapp/session.ts installConsoleFilters() -- intentional console interception (Baileys noise filter)
+#   - JSDoc examples (lines starting with ' *')
+
+set -euo pipefail
+
+hits=$(grep -rn 'console\.\(log\|error\|warn\|info\)(' src/ --include='*.ts' \
+  | grep -v '/cli' \
+  | grep -v '\.test\.' \
+  | grep -v 'mock-channel' \
+  | grep -v 'banner\.ts' \
+  | grep -v 'session\.ts.*\(originalLog\|originalError\|originalWarn\|console\.\(log\|error\|warn\) =\)' \
+  | grep -v 'setup\.ts' \
+  | grep -v 'onboard\.ts' \
+  | grep -v 'slack-wizard\.ts' \
+  | grep -v 'cron/cli\.ts' \
+  | grep -v ' \* ' \
+  || true)
+
+if [ -n "$hits" ]; then
+  echo "ERROR: Found console.* calls in runtime code (use createLogger instead):"
+  echo "$hits"
+  exit 1
+fi
+
+echo "OK: No console.* in runtime code."