feat: rework EOL, repairs, and hosts for real workflow

Four domain-model changes driven by exercising the deployed 2.0 build:

- EOL moves from manufacturer to MPN via new PartModel catalog table,
  so alerts fire on the thing that actually ages.
- Repairs re-home to Host (required hostId + problem text) with an
  optional RepairJobPart join for affected parts; drop Part.replacementPartId.
- New /repairs/:id detail page with editable problem, part list, and
  a RepairComment thread (REPAIR_COMMENTED events fan out to each
  problem part's timeline).
- Host.assetId (required, unique) surfaces prominently on the repair
  page so techs can confirm they're touching the right box.

Single destructive migration reshapes existing dev data. All 7 packages
typecheck clean; 30 API tests pass (9 new covering host membership,
upsertByMpn idempotency + race, assetId 409, comment userId stamping).

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

packages/shared/src/repairs.ts

@@ -3,8 +3,9 @@ import { RepairStatus } from './enums.js';
 import { PaginationQuery } from './pagination.js';
 
 export const CreateRepairJobRequest = z.object({
-  partId: z.string().uuid(),
-  hostId: z.string().uuid().optional().nullable(),
+  hostId: z.string().uuid(),
+  problem: z.string().trim().min(1, 'Problem is required').max(2000),
+  problemPartIds: z.array(z.string().uuid()).max(100).optional(),
   assigneeId: z.string().uuid().optional().nullable(),
   notes: z.string().max(4096).optional().nullable(),
 });
@@ -13,7 +14,8 @@ export type CreateRepairJobRequest = z.infer<typeof CreateRepairJobRequest>;
 export const UpdateRepairJobRequest = z
   .object({
     status: RepairStatus.optional(),
-    hostId: z.string().uuid().nullable().optional(),
+    problem: z.string().trim().min(1).max(2000).optional(),
+    problemPartIds: z.array(z.string().uuid()).max(100).optional(),
     assigneeId: z.string().uuid().nullable().optional(),
     notes: z.string().max(4096).nullable().optional(),
   })
@@ -22,8 +24,8 @@ export type UpdateRepairJobRequest = z.infer<typeof UpdateRepairJobRequest>;
 
 export const RepairJobListQuery = PaginationQuery.extend({
   status: RepairStatus.optional(),
-  partId: z.string().uuid().optional(),
   hostId: z.string().uuid().optional(),
+  problemPartId: z.string().uuid().optional(),
   assigneeId: z.string().uuid().optional(),
   openOnly: z
     .union([z.literal('true'), z.literal('false'), z.boolean()])
@@ -31,3 +33,11 @@ export const RepairJobListQuery = PaginationQuery.extend({
     .optional(),
 });
 export type RepairJobListQuery = z.infer<typeof RepairJobListQuery>;
+
+export const CreateRepairCommentRequest = z.object({
+  content: z.string().trim().min(1, 'Comment cannot be empty').max(4000),
+});
+export type CreateRepairCommentRequest = z.infer<typeof CreateRepairCommentRequest>;
+
+export const RepairCommentListQuery = PaginationQuery;
+export type RepairCommentListQuery = z.infer<typeof RepairCommentListQuery>;