feat: role-code-mapper script + updated install.sh

- scripts/role-code-mapper: echoes role-code for a given role name
- install.sh now:
  1. Copies ClawRoles to ~/.openclaw/ClawRoles
  2. Copies role-code-mapper to ~/.openclaw/bin
  3. Installs routers to PrismFacet (if present)
  4. Registers rules in PrismFacet rules.json

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/role-code-mapper

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROLES_DIR="${HOME}/.openclaw/ClawRoles/roles"
+
+if [[ $# -lt 1 ]]; then
+  echo "Usage: role-code-mapper <role>" >&2
+  exit 1
+fi
+
+ROLE="$1"
+ROLE_FILE="${ROLES_DIR}/${ROLE}/ROLE.md"
+
+if [[ ! -f "$ROLE_FILE" ]]; then
+  echo "Error: ROLE.md not found for role '${ROLE}'" >&2
+  exit 1
+fi
+
+# Extract role-code from YAML frontmatter
+CODE=$(sed -n '/^---$/,/^---$/{ /^role-code:/{ s/^role-code:[[:space:]]*//; p; q; } }' "$ROLE_FILE")
+
+if [[ -z "$CODE" ]]; then
+  echo "Error: role-code not found in ${ROLE_FILE}" >&2
+  exit 1
+fi
+
+echo "$CODE"