refactor(types): eliminate explicit any casts across components (F3.3)

Extend ComponentModelPiece/Product with optional typePiece/typeProduct
nested objects. Replace 12 'as any' casts in assignment node, convert
Promise<any> to Promise<unknown>, use Record<string, unknown> at API
boundaries. ~15 casts eliminated.

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

app/shared/types/inventory.ts

@@ -17,6 +17,7 @@ export interface ComponentModelCustomField {
 export interface ComponentModelPiece {
   typePieceId?: string
   typePieceLabel?: string
+  typePiece?: { id?: string; name?: string; code?: string } | null
   reference?: string
   familyCode?: string
   role?: string
@@ -25,6 +26,7 @@ export interface ComponentModelPiece {
 export interface ComponentModelProduct {
   typeProductId?: string
   typeProductLabel?: string
+  typeProduct?: { id?: string; name?: string; code?: string } | null
   reference?: string
   familyCode?: string
   role?: string
@@ -33,6 +35,7 @@ export interface ComponentModelProduct {
 export interface ComponentModelStructureNode {
   typeComposantId?: string
   typeComposantLabel?: string
+  typeComposant?: { id?: string; name?: string }
   modelId?: string
   familyCode?: string
   alias?: string
@@ -151,8 +154,8 @@ const validatePiece = (
   const typePieceId = ensureString(value.typePieceId)
   const typePieceLabel = ensureString(value.typePieceLabel)
   const reference = ensureString(value.reference)
-  const familyCode = ensureString((value as any).familyCode)
-  const role = ensureString((value as any).role)
+  const familyCode = ensureString(value.familyCode)
+  const role = ensureString(value.role)
 
   if (!typePieceId && !typePieceLabel && !reference && !familyCode) {
     issues.push(`${path}: au moins un identifiant, une famille ou une référence de pièce est requis`)
@@ -184,8 +187,8 @@ const validateStructureNode = (
   const familyCode = ensureString(value.familyCode)
   const alias = ensureString(value.alias)
 
-  const rawSubcomponents = Array.isArray((value as any).subcomponents)
-    ? (value as any).subcomponents
+  const rawSubcomponents = Array.isArray(value.subcomponents)
+    ? value.subcomponents
     : []
 
   const subcomponents: ComponentModelStructureNode[] = []