Initial commit

src/PowderCoating.Core/Entities/CompanyBlastSetup.cs

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+using System.ComponentModel.DataAnnotations;
+using PowderCoating.Core.Enums;
+
+namespace PowderCoating.Core.Entities;
+
+/// <summary>
+/// A named blast setup for a company (e.g. "Siphon Cabinet", "Pressure Pot #1", "Blast Room").
+/// Companies can have multiple setups; one is flagged as the default used for AI quoting when
+/// the user doesn't pick a specific one.
+/// </summary>
+public class CompanyBlastSetup : BaseEntity
+{
+    /// <summary>Friendly name shown in dropdowns, e.g. "Main Cabinet" or "Outdoor Blast Pot".</summary>
+    [Required]
+    [StringLength(100)]
+    public string Name { get; set; } = string.Empty;
+
+    public BlastSetupType SetupType { get; set; } = BlastSetupType.PressurePot;
+
+    /// <summary>Compressor CFM available at the blast nozzle.</summary>
+    [Range(0, 9999)]
+    public decimal CompressorCfm { get; set; }
+
+    /// <summary>Nozzle orifice number (2–8).</summary>
+    [Range(2, 8)]
+    public int BlastNozzleSize { get; set; } = 5;
+
+    public BlastSubstrateType PrimarySubstrate { get; set; } = BlastSubstrateType.Mixed;
+
+    /// <summary>
+    /// When set, bypasses the derived formula and uses this exact rate (sqft/hr).
+    /// Useful for shops that have measured their own throughput.
+    /// </summary>
+    [Range(0, 99999)]
+    public decimal? BlastRateSqFtPerHourOverride { get; set; }
+
+    /// <summary>Used as the default rate when no setup is explicitly selected in the wizard.</summary>
+    public bool IsDefault { get; set; }
+
+    public bool IsActive { get; set; } = true;
+
+    public int DisplayOrder { get; set; }
+
+    // Navigation
+    public virtual Company Company { get; set; } = null!;
+}