Check vault integrity and tool health

Usage: temper check [OPTIONS]

Options:
      --quiet              
      --vault <VAULT>      Path to vault (overrides TEMPER_VAULT and auto-detection)
      --format <FORMAT>    Output format: json | toon (default: toon on a TTY, json otherwise). Precedence: --format → TEMPER_FORMAT → cli.format config → TTY default
      --embed-threads <N>  ONNX intra-op threads for embedding. `0` = let ONNX Runtime decide. Default: this machine's performance-core count (NOT its total core count — efficiency cores measurably slow the batch down). Precedence: --embed-threads → TEMPER_ONNX_INTRA_THREADS → detected → 1
      --color <COLOR>      Color output: auto | always | never (default: auto). Precedence: --color → TEMPER_COLOR → cli.color config → NO_COLOR → auto
  -h, --help               Print help