{"record":{"id":"c94795adaacdcc32","repo":"nexu-io/open-design","slug":"unsupported-nicknamemode-config-nicknamemode","errorCode":null,"errorMessage":"Unsupported nicknameMode: {config['nicknameMode']}","messagePattern":"Unsupported nicknameMode: (.+?)","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"skills/chat-motion-overlay/scripts/build_chat_overlay_spec.py","lineNumber":129,"sourceCode":"    config = json.loads(json.dumps(DEFAULT_CONFIG))\n    if not path:\n        validate_config(config)\n        return config\n    user = json.loads(Path(path).read_text(encoding=\"utf-8\"))\n    config.update(user)\n    validate_config(config)\n    return config\n\n\ndef validate_config(config: dict) -> None:\n    if config[\"container\"] not in ALLOWED_CONTAINERS:\n        raise ValueError(f\"Unsupported container: {config['container']}\")\n    if config[\"avatarMode\"] not in ALLOWED_AVATAR_MODES:\n        raise ValueError(f\"Unsupported avatarMode: {config['avatarMode']}\")\n    if config[\"deviceFrame\"] not in ALLOWED_DEVICE_FRAMES:\n        raise ValueError(f\"Unsupported deviceFrame: {config['deviceFrame']}\")\n    if config[\"nicknameMode\"] not in ALLOWED_NICKNAME_MODES:\n        raise ValueError(f\"Unsupported nicknameMode: {config['nicknameMode']}\")\n    if config[\"deliveryFormat\"] not in ALLOWED_DELIVERY_FORMATS:\n        raise ValueError(f\"Unsupported deliveryFormat: {config['deliveryFormat']}\")\n    if config[\"container\"] == \"none\" and config[\"deviceFrame\"] == \"iphone-dynamic-island\":\n        raise ValueError(\"container=none does not support deviceFrame=iphone-dynamic-island; use deviceFrame=none or choose an app container\")\n\n    for speaker, participant in config.get(\"participants\", {}).items():\n        side = participant.get(\"side\")\n        if side and side not in {\"left\", \"right\"}:\n            raise ValueError(f\"Unsupported side for participant {speaker}: {side}\")\n        preset_key = participant.get(\"preset\")\n        if preset_key and preset_key not in PRESET_KEYS:\n            raise ValueError(f\"Unsupported preset for participant {speaker}: {preset_key}\")\n        upload_path = participant.get(\"uploadPath\")\n        if participant.get(\"uploadAsset\"):\n            raise ValueError(f\"Participant {speaker} config must use uploadPath, not uploadAsset\")\n        if config[\"avatarMode\"] == \"preset\" and upload_path:\n            raise ValueError(f\"avatarMode=preset does not allow uploadPath for participant {speaker}\")\n        if config[\"avatarMode\"] == \"upload\" and not upload_path:","sourceCodeStart":111,"sourceCodeEnd":147,"githubUrl":"https://github.com/nexu-io/open-design/blob/5be4028344c2eb4c667c5a97bda8f750c5597ef7/skills/chat-motion-overlay/scripts/build_chat_overlay_spec.py#L111-L147","documentation":"Raised by validate_config when config['nicknameMode'] is not in ALLOWED_NICKNAME_MODES = {\"hidden\",\"first-message-only\",\"always\"}. Default is 'hidden'. Controls how often a speaker's nickname appears in the rendered chat.","triggerScenarios":"User sets `\"nicknameMode\": \"once\"`, `\"nicknameMode\": \"every\"`, `\"nicknameMode\": \"never\"`, or `\"nicknameMode\": \"on\"`. None of these are recognized tokens.","commonSituations":"Natural-language guesses that don't match the enum; wanting 'show once' and trying 'once' instead of 'first-message-only'; wanting 'always visible' and trying 'always-show'; stale or copied config.","solutions":["Set nicknameMode to one of: hidden, first-message-only, always.","Map intent: 'never show' -> hidden; 'show once at first message' -> first-message-only; 'show on every message' -> always.","Use lowercase exact tokens.","Pre-validate: `assert c['nicknameMode'] in {'hidden','first-message-only','always'}`."],"exampleFix":"// before\n{\"nicknameMode\": \"once\"}\n# -> ValueError: Unsupported nicknameMode: once\n\n// after\n{\"nicknameMode\": \"first-message-only\"}","handlingStrategy":"validation","validationCode":"ALLOWED_NICKNAME_MODES = {\"hidden\", \"first-message-only\", \"always\"}\n\nif config[\"nicknameMode\"] not in ALLOWED_NICKNAME_MODES:\n    raise SystemExit(\n        f\"nicknameMode must be one of {sorted(ALLOWED_NICKNAME_MODES)}; \"\n        f\"got {config['nicknameMode']!r}\"\n    )","typeGuard":"def is_nickname_mode(value) -> bool:\n    return value in {\"hidden\", \"first-message-only\", \"always\"}","tryCatchPattern":"try:\n    validate_config(config)\nexcept ValueError as exc:\n    raise SystemExit(f\"Config error: {exc}\") from exc","preventionTips":["Map intent to token up front: never -> hidden, once -> first-message-only, every -> always.","Use jsonschema enum constraints.","Keep the enum list in shared docs so writers don't guess.","Validate before render to surface all config errors at once."],"tags":["config","validation","chat-overlay","nickname"],"backgroundTag":null,"analyzedSha":"5be4028344c2eb4c667c5a97bda8f750c5597ef7","analyzedAt":"2026-08-12T12:03:58.812Z","schemaVersion":2},"datasetVersion":"2026-08-12T18:17:37.767Z"}