Add TCPA-compliant SMS consent tracking for prospect quotes

- Quote entity: ProspectSmsConsent (bool) + ProspectSmsConsentedAt (DateTime?) fields
- QuoteDtos: consent fields on Create/Update/Convert DTOs with TCPA guidance text
- Quote Create/Edit views: SMS consent checkbox shown when mobile number is entered
- Quote ConvertToCustomer view: staff must re-confirm consent carries over to customer record
- QuoteApproval: consent state exposed in ViewModel and ApprovalPage for transparency
- Consent timestamp cleared when prospect quote is linked to an existing customer
- Migration: AddProspectSmsConsent

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Application/DTOs/Quote/QuoteDtos.cs

@@ -59,6 +59,8 @@ public class QuoteDto
     public string? ProspectCity { get; set; }
     public string? ProspectState { get; set; }
     public string? ProspectZipCode { get; set; }
+    public bool ProspectSmsConsent { get; set; }
+    public DateTime? ProspectSmsConsentedAt { get; set; }
 
     public string? PreparedById { get; set; }
     public string? PreparedByName { get; set; }
@@ -186,6 +188,9 @@ public class CreateQuoteDto
     [StringLength(10)]
     public string? ProspectZipCode { get; set; }
 
+    [Display(Name = "SMS Consent")]
+    public bool ProspectSmsConsent { get; set; } = false;
+
     // Oven Selection
     [Display(Name = "Oven")]
     public int? OvenCostId { get; set; }
@@ -322,6 +327,9 @@ public class UpdateQuoteDto
     [StringLength(10)]
     public string? ProspectZipCode { get; set; }
 
+    [Display(Name = "SMS Consent")]
+    public bool ProspectSmsConsent { get; set; } = false;
+
     // Oven Selection
     [Display(Name = "Oven")]
     public int? OvenCostId { get; set; }
@@ -685,6 +693,16 @@ public class ConvertQuoteToCustomerDto
     [Display(Name = "Notes")]
     [DataType(DataType.MultilineText)]
     public string? Notes { get; set; }
+
+    /// <summary>
+    /// Staff must explicitly confirm verbal SMS consent before it carries over to the new customer record.
+    /// Pre-checked when ProspectSmsConsent was true on the source quote.
+    /// </summary>
+    [Display(Name = "Customer has given verbal consent to receive SMS notifications")]
+    public bool SmsConsent { get; set; }
+
+    /// <summary>Timestamp from the source quote — preserved so the consent record reflects when consent was originally given.</summary>
+    public DateTime? ProspectSmsConsentedAt { get; set; }
 }
 
 // ============================================================================
@@ -745,6 +763,16 @@ public class CreateQuoteItemCoatDto
     /// When true, the additional layer labor charge is not applied even if this is not the first coat.
     /// </summary>
     public bool NoExtraLayerCharge { get; set; }
+
+    /// <summary>Platform powder catalog item ID selected via the Custom tab lookup.</summary>
+    public int? CatalogItemId { get; set; }
+
+    /// <summary>
+    /// When true (and CatalogItemId is set), the server creates a 0-balance IsIncoming inventory
+    /// item from the catalog entry so QR codes can be printed while the powder is in transit.
+    /// The coat is then linked to that new inventory record.
+    /// </summary>
+    public bool AddAsIncoming { get; set; }
 }
 
 /// <summary>