feat(errors): platform-wide request ids + error codes + admin inspector

End-to-end error-handling overhaul. A user hitting any failure now sees
a plain-text message + stable error code + reference id. A super admin
can paste the id into /admin/errors/<id> for the full request shape,
sanitized body, error stack, and a heuristic likely-cause hint.

REQUEST CONTEXT (AsyncLocalStorage)
- src/lib/request-context.ts mints a per-request frame carrying
  requestId + portId + userId + method + path + start timestamp.
- withAuth wraps every authenticated handler in runWithRequestContext
  and accepts an upstream X-Request-Id header (validated shape) or
  generates a fresh UUID. The id ALWAYS leaves on the X-Request-Id
  response header, including early-return 401/403/4xx paths.
- Pino logger reads from the same context via mixin — every log
  line emitted during the request automatically carries the ids
  with no per-call threading.

ERROR CODE REGISTRY
- src/lib/error-codes.ts defines stable DOMAIN_REASON codes with
  HTTP status + plain-text user-facing message (no jargon, written
  for the rep on the phone with a customer).
- New CodedError class wraps a registered code + optional
  internalMessage (admin-only — never sent to client).
- Existing AppError subclasses got plain-text default rewrites so
  legacy throw sites improve immediately without migration.
- High-impact services migrated to specific codes:
  expenses (RECEIPT_REQUIRED, INVOICE_LINKED), interest-berths
  (CROSS_PORT_LINK_REJECTED), berth-pdf (PDF_MAGIC_BYTE / PDF_EMPTY /
  PDF_TOO_LARGE / VERSION_ALREADY_CURRENT), recommender
  (INTEREST_PORT_MISMATCH).

ERROR ENVELOPE
- errorResponse always sets X-Request-Id header + requestId field.
- 5xx responses include a "Quote error ID …" friendly line.
- 4xx kept clean (validation, permission, not-found don't pollute
  the inspector — they're already in audit log).

PERSISTENCE (error_events table, migration 0040)
- One row per 5xx, keyed on requestId, with method/path/status/error
  name+message/stack head (4KB cap)/sanitized body excerpt (1KB cap;
  password/token/secret/etc keys redacted)/duration/IP/UA/metadata.
- captureErrorEvent extracts Postgres SQLSTATE/severity/cause.code
  so the classifier can recognize FK / unique / NOT NULL / schema-
  drift violations.
- Failure to persist is logged-not-thrown.

LIKELY-CULPRIT CLASSIFIER (src/lib/error-classifier.ts)
- 4-pass heuristic (first match wins):
  1. Postgres SQLSTATE → human reason (23503 FK, 23505 unique,
     42703 schema drift, 53300 connection limit, …)
  2. Error class name (AbortError, TimeoutError, FetchError,
     ZodError)
  3. Stack-path patterns (/lib/storage/, /lib/email/, documenso,
     openai|claude, /queue/workers/)
  4. Free-text message keywords (econnrefused, rate limit, timeout,
     unauthorized|invalid api key)
- Returns { label, hint, subsystem } for the inspector badge.

CLIENT SIDE
- apiFetch throws structured ApiError with message + code + requestId
  + details + retryAfter.
- toastError() helper renders the standard 3-line toast:
  plain message / Error code: X / Reference ID: Y [Copy ID].

ADMIN INSPECTOR
- /<port>/admin/errors lists captured 5xx with status badge + path +
  likely-culprit badge + truncated message + reference id. Filter by
  status code; auto-refresh via TanStack Query.
- /<port>/admin/errors/<requestId> deep-dive: request shape, full
  error name+message+stack, sanitized body excerpt, raw metadata,
  registered-code lookup (so admin can compare to what user saw),
  likely-culprit hint with subsystem tag.
- /<port>/admin/errors/codes is the in-app code reference page —
  every registered code grouped by domain prefix, searchable, with
  HTTP status + user message inline. Linked from inspector header
  so admins can flip to it while triaging.
- Permission: admin.view_audit_log. Super admins see all ports;
  regular admins port-scoped.
- system-monitoring dashboard now surfaces error_events alongside
  permission_denied audit + queue failed jobs (RecentError gains
  source: 'request' variant).

DOCS
- docs/error-handling.md walks through coded errors, plain-text
  message guidelines, client toasting, admin inspector usage,
  persistence rules, classifier internals, pruning, and the
  legacy → CodedError migration path.

MIGRATION SAFETY
- Audit confirmed all 41 migrations (0000-0040) apply cleanly in
  journal order against an empty DB. 0040 references ports(id)
  which exists from 0000. 0035/0038 don't deadlock under sequential
  psql -f. Removed redundant idx_ds_sent_by from 0038 (created in
  0037).

Tests: 1168/1168 vitest passing. tsc clean.
- security-error-responses tests updated for plain-text messages
  + new optional response keys (code/requestId/message).
- berth-pdf-versions tests assert stable error codes via
  toMatchObject({ code }) rather than message regex.

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

src/lib/services/berth-pdf.service.ts

@@ -18,7 +18,7 @@ import { and, desc, eq, isNull, max, sql } from 'drizzle-orm';
 import { db } from '@/lib/db';
 import { berths, berthPdfVersions } from '@/lib/db/schema/berths';
 import { systemSettings } from '@/lib/db/schema/system';
-import { ConflictError, NotFoundError, ValidationError } from '@/lib/errors';
+import { CodedError, ConflictError, NotFoundError, ValidationError } from '@/lib/errors';
 import { logger } from '@/lib/logger';
 import { getStorageBackend } from '@/lib/storage';
 
@@ -218,15 +218,13 @@ export async function uploadBerthPdf(args: UploadBerthPdfArgs): Promise<UploadBe
     if (!isPdfMagic(buffer)) {
       // Best-effort cleanup if the storage already has a partial.
       if (args.storageKey) await backend.delete(args.storageKey).catch(() => undefined);
-      throw new ValidationError(
-        'Uploaded file failed PDF magic-byte check (does not start with %PDF-).',
-      );
+      throw new CodedError('BERTHS_PDF_MAGIC_BYTE');
     }
-    if (buffer.length === 0) throw new ValidationError('Uploaded PDF is empty (0 bytes).');
+    if (buffer.length === 0) throw new CodedError('BERTHS_PDF_EMPTY');
     if (buffer.length > maxBytes) {
-      throw new ValidationError(
-        `PDF exceeds ${maxMb} MB upload cap (got ${(buffer.length / 1024 / 1024).toFixed(1)} MB).`,
-      );
+      throw new CodedError('BERTHS_PDF_TOO_LARGE', {
+        internalMessage: `PDF exceeds ${maxMb} MB upload cap (got ${(buffer.length / 1024 / 1024).toFixed(1)} MB).`,
+      });
     }
     const written = await backend.put(storageKey, buffer, { contentType: 'application/pdf' });
     storageKey = written.key;
@@ -240,13 +238,13 @@ export async function uploadBerthPdf(args: UploadBerthPdfArgs): Promise<UploadBe
     }
     if (head.sizeBytes === 0) {
       await backend.delete(args.storageKey).catch(() => undefined);
-      throw new ValidationError('Uploaded PDF is empty (0 bytes).');
+      throw new CodedError('BERTHS_PDF_EMPTY');
     }
     if (head.sizeBytes > maxBytes) {
       await backend.delete(args.storageKey).catch(() => undefined);
-      throw new ValidationError(
-        `PDF exceeds ${maxMb} MB upload cap (got ${(head.sizeBytes / 1024 / 1024).toFixed(1)} MB).`,
-      );
+      throw new CodedError('BERTHS_PDF_TOO_LARGE', {
+        internalMessage: `PDF exceeds ${maxMb} MB upload cap (got ${(head.sizeBytes / 1024 / 1024).toFixed(1)} MB).`,
+      });
     }
     if (head.contentType !== 'application/pdf' && head.contentType !== 'application/octet-stream') {
       await backend.delete(args.storageKey).catch(() => undefined);
@@ -607,7 +605,7 @@ export async function rollbackToVersion(
   if (!berthRow) throw new NotFoundError('Berth');
 
   if (berthRow.currentPdfVersionId === versionId) {
-    throw new ConflictError('That version is already current; rollback is a no-op.');
+    throw new CodedError('BERTHS_VERSION_ALREADY_CURRENT');
   }
 
   await db