feat: remove FM feature from Vector

FMs move to a separate application. Drops Fm/FmPart tables + Repair.fmId
column, deletes FM_OPENED/FM_CLOSED PartEvent rows, strips FM enums +
webhook events + shared contracts, removes FM routes/services/pages/UI,
and collapses dashboard admin ops to Repairs 7d/30d + trend + custody
backlog.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

packages/db/prisma/schema.prisma

@@ -138,7 +138,6 @@ model Part {
   updatedAt          DateTime     @updatedAt
   events             PartEvent[]
   tags               PartTag[]
-  problemInFms       FmPart[]
   brokenRepairs      Repair[]     @relation("BrokenRepairs")
   replacementRepairs Repair[]     @relation("ReplacementRepairs")
 
@@ -197,7 +196,6 @@ model Host {
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
   parts     Part[]
-  fms       Fm[]
   repairs   Repair[]
   events    HostEvent[]
 
@@ -221,37 +219,6 @@ model HostEvent {
   @@index([userId])
 }
 
-model Fm {
-  id           String    @id @default(uuid())
-  hostId       String
-  host         Host      @relation(fields: [hostId], references: [id], onDelete: Restrict)
-  status       String    @default("OPEN")
-  problem      String
-  openedAt     DateTime  @default(now())
-  closedAt     DateTime?
-  createdAt    DateTime  @default(now())
-  updatedAt    DateTime  @updatedAt
-  problemParts FmPart[]
-  repairs      Repair[]
-
-  @@index([status])
-  @@index([hostId])
-  @@index([status, openedAt(sort: Desc)])
-  @@map("fms")
-}
-
-model FmPart {
-  fmId      String
-  partId    String
-  fm        Fm       @relation(fields: [fmId], references: [id], onDelete: Cascade)
-  part      Part     @relation(fields: [partId], references: [id], onDelete: Restrict)
-  createdAt DateTime @default(now())
-
-  @@id([fmId, partId])
-  @@index([partId])
-  @@map("fm_parts")
-}
-
 model Repair {
   id                String   @id @default(uuid())
   hostId            String
@@ -263,13 +230,10 @@ model Repair {
   performedById     String
   performedBy       User     @relation(fields: [performedById], references: [id], onDelete: Restrict)
   performedAt       DateTime @default(now())
-  fmId              String?
-  fm                Fm?      @relation(fields: [fmId], references: [id], onDelete: SetNull)
   createdAt         DateTime @default(now())
   updatedAt         DateTime @updatedAt
 
   @@index([hostId, performedAt(sort: Desc)])
-  @@index([fmId])
   @@index([performedById, performedAt(sort: Desc)])
   @@index([brokenPartId])
   @@index([replacementPartId])