Share the target filter, fix cd-status branch, record deploy status

- enabled_targets/names_for: one implementation of 'a host acts only on its
  own targets'; --host s5 and --host s5.fisher.hu now select the same targets
- shell_value: JSON booleans reach shell consumers as true/false
- cd-status: capture before eval, so the unconfigured-host branch is reachable
- cd-deploy writes a .status record; cd-status reads it instead of grepping
  the log's prose
- cd-render-hooks --list-urls replaces two inline JSON readers

install/install.sh

@@ -119,15 +119,9 @@ printf '    %-28s %s\n' "Trigger On" "Push Events"
 printf '    %-28s %s\n' "Secret" "the matching value from ${SECRETS_FILE}"
 echo
 
-"${REPO_ROOT}/bin/cd-render-hooks" --redact >/dev/null 2>&1 || true
-python3 - "$HOOKS_FILE" "$CD_BIND" "$CD_PORT" <<'PY'
-import json, sys
-hooks_file, bind, port = sys.argv[1], sys.argv[2], sys.argv[3]
-with open(hooks_file) as fh:
-    hooks = json.load(fh)
-for hook in hooks:
-    print(f"    http://{bind}:{port}/hooks/{hook['id']}")
-PY
+"${REPO_ROOT}/bin/cd-render-hooks" --list-urls \
+    --output "$HOOKS_FILE" --base-url "http://${CD_BIND}:${CD_PORT}" \
+    | sed 's/^/    /'
 
 echo
 echo "    Logs:   journalctl --user -u ${UNIT_NAME} -f"