Phase 1a: shared schemas, service layer, server tooling

- shared/schemas/: move Zod schemas out of routes so client + server share them
- shared/types.ts: inferred types and enums for cross-package use
- server tsconfig rootDir raised to ".." so shared/ compiles in-tree
- server/src/services/: ticket, comment, cti, user, auth, notification (stub), search (stub)
- Routes thinned to validate-delegate-return; business logic now testable in isolation
- server/src/lib/httpError.ts: typed HttpError replaces ad-hoc throw shapes
- server/src/lib/logger.ts: pino structured logging replaces console.log
- autoClose job delegates to ticketService.closeStale()
- express-rate-limit on /api/auth/login (10 / 15min / IP)
- vitest + vitest-mock-extended; 20 service-level tests cover auth, ticket, comment, user flows
- CI: lint + test jobs before docker builds

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

shared/types.ts

@@ -0,0 +1,78 @@
+import type { Role, TicketStatus } from './schemas/enums';
+
+export type { Role, TicketStatus };
+
+export interface UserSummary {
+  id: string;
+  username: string;
+  displayName: string;
+}
+
+export interface User extends UserSummary {
+  email: string;
+  role: Role;
+  apiKey?: string | null;
+  createdAt?: string;
+}
+
+export interface Category {
+  id: string;
+  name: string;
+}
+
+export interface CTIType {
+  id: string;
+  name: string;
+  categoryId: string;
+  category?: Category;
+}
+
+export interface Item {
+  id: string;
+  name: string;
+  typeId: string;
+  type?: CTIType & { category?: Category };
+}
+
+export interface Comment {
+  id: string;
+  body: string;
+  ticketId: string;
+  authorId: string;
+  author: UserSummary;
+  createdAt: string;
+}
+
+export interface AuditLog {
+  id: string;
+  ticketId: string;
+  userId: string;
+  action: string;
+  detail: string | null;
+  createdAt: string;
+  user: UserSummary;
+}
+
+export interface Ticket {
+  id: string;
+  displayId: string;
+  title: string;
+  overview: string;
+  severity: number;
+  status: TicketStatus;
+  categoryId: string;
+  typeId: string;
+  itemId: string;
+  assigneeId: string | null;
+  createdById: string;
+  resolvedAt: string | null;
+  createdAt: string;
+  updatedAt: string;
+  category: Category;
+  type: CTIType;
+  item: Item;
+  assignee: UserSummary | null;
+  createdBy: UserSummary;
+  comments?: Comment[];
+  _count?: { comments: number };
+}