fix(audit-tier-1): timeouts, lifecycle, per-port Documenso, FK constraints

Closes the second wave of HIGH-priority audit findings:

* fetchWithTimeout helper (new src/lib/fetch-with-timeout.ts) wraps
  Documenso, OCR, currency, Umami, IMAP, etc. — a hung upstream can
  no longer pin a worker concurrency slot indefinitely.  OpenAI client
  passes timeout: 30_000.  ImapFlow gets socket / greeting / connection
  timeouts.
* SIGTERM / SIGINT handler in src/server.ts drains in-flight HTTP,
  closes Socket.io, and disconnects Redis before exit; compose
  stop_grace_period bumped to 30s.  Adds closeSocketServer() helper.
* env.ts gains zod-validated PORT and MULTI_NODE_DEPLOYMENT, and
  filesystem.ts now reads from env (a typo can no longer silently
  disable the multi-node guard).
* Per-port Documenso template + recipient IDs land in system_settings
  with env fallback (PortDocumensoConfig now exposes eoiTemplateId,
  clientRecipientId, developerRecipientId, approvalRecipientId).
  document-templates.ts uses the per-port config and threads portId
  into documensoGenerateFromTemplate().
* Migration 0042 wires the eleven HIGH-tier missing FK constraints
  (documents/files/interests/reminders/berth_waiting_list/
  form_submissions) plus polymorphic CHECK round 2
  (yacht_ownership_history.owner_type, document_sends.document_kind),
  invoices.billing_entity_id NOT EMPTY, and clients.merged_into self-FK.
  Drizzle schema columns updated to .references(...) where possible
  so the misleading "FK wired in relations.ts" comments are gone.

Test status: 1168/1168 vitest, tsc clean.

Refs: docs/audit-comprehensive-2026-05-05.md HIGH §§5,6,7,8,9,10 +
MED §§14,15,16,18.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/lib/db/schema/operations.ts

@@ -1,21 +1,17 @@
-import {
-  pgTable,
-  text,
-  boolean,
-  timestamp,
-  jsonb,
-  index,
-  uniqueIndex,
-} from 'drizzle-orm/pg-core';
+import { pgTable, text, boolean, timestamp, jsonb, index, uniqueIndex } from 'drizzle-orm/pg-core';
 import { sql } from 'drizzle-orm';
 import { ports } from './ports';
 import { clients } from './clients';
 import { files } from './documents';
+import { interests } from './interests';
+import { berths } from './berths';
 
 export const reminders = pgTable(
   'reminders',
   {
-    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
     portId: text('port_id')
       .notNull()
       .references(() => ports.id),
@@ -27,8 +23,8 @@ export const reminders = pgTable(
     assignedTo: text('assigned_to'), // user ID
     createdBy: text('created_by').notNull(),
     clientId: text('client_id').references(() => clients.id),
-    interestId: text('interest_id'), // references interests.id
-    berthId: text('berth_id'), // references berths.id
+    interestId: text('interest_id').references(() => interests.id, { onDelete: 'set null' }),
+    berthId: text('berth_id').references(() => berths.id, { onDelete: 'set null' }),
     autoGenerated: boolean('auto_generated').notNull().default(false),
     googleCalendarEventId: text('google_calendar_event_id'),
     googleCalendarSynced: boolean('google_calendar_synced').notNull().default(false),
@@ -40,16 +36,18 @@ export const reminders = pgTable(
   (table) => [
     index('idx_reminders_port').on(table.portId),
     index('idx_reminders_assigned').on(table.assignedTo, table.status),
-    index('idx_reminders_due').on(table.portId, table.dueAt).where(
-      sql`${table.status} IN ('pending', 'snoozed')`
-    ),
+    index('idx_reminders_due')
+      .on(table.portId, table.dueAt)
+      .where(sql`${table.status} IN ('pending', 'snoozed')`),
   ],
 );
 
 export const googleCalendarTokens = pgTable(
   'google_calendar_tokens',
   {
-    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
     userId: text('user_id').notNull().unique(),
     accessToken: text('access_token').notNull(), // encrypted
     refreshToken: text('refresh_token').notNull(), // encrypted
@@ -67,7 +65,9 @@ export const googleCalendarTokens = pgTable(
 export const googleCalendarCache = pgTable(
   'google_calendar_cache',
   {
-    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
     userId: text('user_id').notNull(),
     eventId: text('event_id').notNull(), // Google Calendar event ID
     title: text('title').notNull(),
@@ -88,7 +88,9 @@ export const googleCalendarCache = pgTable(
 export const notifications = pgTable(
   'notifications',
   {
-    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
     portId: text('port_id')
       .notNull()
       .references(() => ports.id),
@@ -114,7 +116,9 @@ export const notifications = pgTable(
 export const scheduledReports = pgTable(
   'scheduled_reports',
   {
-    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
     portId: text('port_id')
       .notNull()
       .references(() => ports.id),
@@ -135,7 +139,9 @@ export const scheduledReports = pgTable(
 export const reportRecipients = pgTable(
   'report_recipients',
   {
-    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
     reportId: text('report_id')
       .notNull()
       .references(() => scheduledReports.id, { onDelete: 'cascade' }),
@@ -151,7 +157,9 @@ export const reportRecipients = pgTable(
 export const generatedReports = pgTable(
   'generated_reports',
   {
-    id: text('id').primaryKey().$defaultFn(() => crypto.randomUUID()),
+    id: text('id')
+      .primaryKey()
+      .$defaultFn(() => crypto.randomUUID()),
     portId: text('port_id')
       .notNull()
       .references(() => ports.id),
@@ -171,9 +179,9 @@ export const generatedReports = pgTable(
   (table) => [
     index('idx_gr_port_created').on(table.portId, table.createdAt),
     index('idx_gr_port_status').on(table.portId, table.status),
-    index('idx_gr_scheduled').on(table.scheduledReportId).where(
-      sql`${table.scheduledReportId} IS NOT NULL`
-    ),
+    index('idx_gr_scheduled')
+      .on(table.scheduledReportId)
+      .where(sql`${table.scheduledReportId} IS NOT NULL`),
   ],
 );