feat(berths): per-berth PDF storage (versioned) + reverse parser

Phase 6b of the berth-recommender refactor (see
docs/berth-recommender-and-pdf-plan.md §3.2, §3.3, §4.7b, §11.1, §14.6).
Builds on the Phase 6a pluggable storage backend (commit 83693dd) — every
file write goes through `getStorageBackend()`; no direct minio imports.

Schema (migration 0030_berth_pdf_versions):
  - new table `berth_pdf_versions` with monotonic `version_number` per
    berth, `storage_key` (renamed convention from §4.7a), sha256, size,
    `download_url_expires_at` cache slot for §11.1 signed-URL throttling,
    and `parse_results` jsonb for the audit trail.
  - new column `berths.current_pdf_version_id` (deferred from Phase 0)
    with FK to `berth_pdf_versions(id)` ON DELETE SET NULL.
  - relations + types exported from `schema/berths.ts`.

3-tier reverse parser (`lib/services/berth-pdf-parser.ts`):
  1. AcroForm via pdf-lib — pulls named fields (`length_ft`,
     `mooring_number`, etc.) at confidence 1. Sample PDF has 0 such
     fields, so this is defensive coverage for future templates.
  2. OCR via Tesseract.js — positional/regex heuristics keyed off the
     §9.2 layout (Length/Width/Water Depth as `<imperial> / <metric>`,
     `WEEK HIGH / LOW`, `CONFIRMED THROUGH UNTIL <date>`, etc.). Returns
     per-field confidence + global mean; flags imperial-vs-metric drift
     >1% in `warnings`.
  3. AI fallback — gated via `getResolvedOcrConfig()` (existing
     openai/claude provider). Surfaced from the diff dialog only when
     `shouldOfferAiTier()` returns true (mean OCR confidence below
     0.55 threshold), so OPENAI_API_KEY isn't burned on every upload.

Service layer (`lib/services/berth-pdf.service.ts`):
  - `uploadBerthPdf()` — magic-byte check, size cap, version-number
    bump + current pointer in one transaction.
  - `reconcilePdfWithBerth()` — auto-applies fields where CRM is null;
    flags conflicts when CRM and PDF disagree; tolerates ±1% on numeric
    columns; warns on mooring-number-in-PDF mismatch (§14.6).
  - `applyParseResults()` — hard allowlist of writable columns;
    stamps `appliedFields` onto `parse_results` for audit.
  - `rollbackToVersion()` — pointer flip only, never re-parses (§14.6).
  - `listBerthPdfVersions()` — version list with 15-min signed URLs.
  - `getMaxUploadMb()` — port-override → global → default 15 lookup
    on `system_settings.berth_pdf_max_upload_mb`.

§14.6 critical mitigations:
  - Magic-byte check (`%PDF-`) on every upload; mismatch deletes the
    storage object and rejects the request.
  - Size cap from `system_settings.berth_pdf_max_upload_mb` (default
    15 MB); enforced in the upload-url presign AND server-side.
  - 0-byte uploads rejected.
  - Mooring-number mismatch surfaces as a `warnings[]` entry on the
    reconcile result so the rep sees it in the diff dialog.
  - Imperial vs metric ±1% tolerance in both the parser warnings and
    the reconcile equality check.
  - Path traversal already blocked at the storage layer (Phase 6a).

API + UI:
  - `POST /api/v1/berths/[id]/pdf-upload-url` — presigned URL (S3) or
    HMAC-signed proxy URL (filesystem) sized to the per-port cap.
  - `POST /api/v1/berths/[id]/pdf-versions` — verifies the upload via
    `backend.head()`, writes the row, bumps `current_pdf_version_id`.
  - `GET /api/v1/berths/[id]/pdf-versions` — version list + signed URLs.
  - `POST /api/v1/berths/[id]/pdf-versions/[versionId]/rollback`.
  - `POST /api/v1/berths/[id]/pdf-versions/parse-results/apply` —
    rep-confirmed diff payload.
  - New "Documents" tab on the berth detail page (`berth-tabs.tsx`)
    with current-PDF panel, version history, Replace PDF button, and
    `<PdfReconcileDialog>` for the auto-applied + conflicts UX.

System settings:
  - `berth_pdf_max_upload_mb` (default 15) — caps presigned-upload size
    + server-side validation. Resolved port-override → global → default.

Tests:
  - `tests/unit/services/berth-pdf-parser.test.ts` — magic bytes,
    feet-inches, human dates, full §9.2-shaped OCR text → 18 fields,
    drift warning, AI-tier gate.
  - `tests/unit/services/berth-pdf-acroform.test.ts` — synthetic
    pdf-lib AcroForm round-trip.
  - `tests/integration/berth-pdf-versions.test.ts` — upload, version-
    number bump, magic-byte rejection, reconcile auto-applied vs
    conflicts vs ±1% tolerance, mooring-number warning,
    applyParseResults allowlist enforcement, rollback semantics.

Acceptance: `pnpm exec tsc --noEmit` clean, `pnpm exec vitest run`
green at 1103/1103.

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

src/components/berths/berth-documents-tab.tsx

@@ -0,0 +1,269 @@
+/**
+ * Documents tab on the berth detail page (Phase 6b — see plan §5.6).
+ *
+ * Sections:
+ *   - Current PDF panel (download link, "Replace PDF" button, parse-engine chip).
+ *   - Version history list — newest first, with rollback affordance on every
+ *     non-current row.
+ *   - Reconcile-diff dialog (PdfReconcileDialog), opened after a successful
+ *     upload + parse. Shows auto-applied vs conflicted fields and lets the
+ *     rep accept the conflict resolution.
+ *
+ * The actual upload is split in two steps:
+ *   1. POST /pdf-upload-url -> presigned URL + storageKey
+ *   2. PUT the file to that URL (multipart for filesystem-proxy mode, signed
+ *      PUT for S3 mode)
+ *   3. POST /pdf-versions with the storage key + parse results
+ */
+
+'use client';
+
+import { useRef, useState } from 'react';
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
+import { toast } from 'sonner';
+
+import { apiFetch } from '@/lib/api/client';
+import { Button } from '@/components/ui/button';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { PdfReconcileDialog } from './pdf-reconcile-dialog';
+
+interface PdfVersionRow {
+  id: string;
+  versionNumber: number;
+  fileName: string;
+  fileSizeBytes: number;
+  uploadedBy: string;
+  uploadedAt: string;
+  isCurrent: boolean;
+  downloadUrl: string;
+  downloadUrlExpiresAt: string;
+  parseEngine: 'acroform' | 'ocr' | 'ai' | null;
+}
+
+interface UploadUrlResponse {
+  url: string;
+  method: 'PUT' | 'POST';
+  storageKey: string;
+  maxBytes: number;
+  backend: 's3' | 'filesystem';
+}
+
+export function BerthDocumentsTab({ berthId }: { berthId: string }) {
+  const qc = useQueryClient();
+  const fileInputRef = useRef<HTMLInputElement | null>(null);
+  const [pendingDiff, setPendingDiff] = useState<{
+    versionId: string;
+    autoApplied: Array<{ field: string; value: string | number }>;
+    conflicts: Array<{
+      field: string;
+      crmValue: string | number | null;
+      pdfValue: string | number | null;
+      pdfConfidence: number;
+    }>;
+    warnings: string[];
+  } | null>(null);
+
+  const { data: versions, isLoading } = useQuery<PdfVersionRow[]>({
+    queryKey: ['berth-pdf-versions', berthId],
+    queryFn: () =>
+      apiFetch<{ data: PdfVersionRow[] }>(`/api/v1/berths/${berthId}/pdf-versions`).then(
+        (r) => r.data,
+      ),
+  });
+
+  const rollback = useMutation({
+    mutationFn: (versionId: string) =>
+      apiFetch(`/api/v1/berths/${berthId}/pdf-versions/${versionId}/rollback`, {
+        method: 'POST',
+      }),
+    onSuccess: () => {
+      void qc.invalidateQueries({ queryKey: ['berth-pdf-versions', berthId] });
+      void qc.invalidateQueries({ queryKey: ['berth', berthId] });
+      toast.success('Rolled back to selected version.');
+    },
+    onError: (err: Error) => {
+      toast.error('Rollback failed', { description: err.message });
+    },
+  });
+
+  const upload = useMutation({
+    mutationFn: async (file: File) => {
+      // 1. ask the server for a presigned upload URL
+      const upRes = await apiFetch<{ data: UploadUrlResponse }>(
+        `/api/v1/berths/${berthId}/pdf-upload-url`,
+        {
+          method: 'POST',
+          body: { fileName: file.name, sizeBytes: file.size },
+        },
+      );
+      const { url, method, storageKey, maxBytes } = upRes.data;
+      if (file.size > maxBytes) {
+        throw new Error(
+          `File ${(file.size / 1024 / 1024).toFixed(1)} MB exceeds ${(maxBytes / 1024 / 1024).toFixed(0)} MB limit`,
+        );
+      }
+
+      // 2. upload directly to storage (filesystem-proxy or S3)
+      const putRes = await fetch(url, {
+        method,
+        body: file,
+        headers: { 'content-type': 'application/pdf' },
+        credentials: url.startsWith('/') ? 'include' : 'omit',
+      });
+      if (!putRes.ok) {
+        throw new Error(`Storage PUT failed (${putRes.status})`);
+      }
+
+      // 3. compute sha256 in the browser for the metadata row
+      const sha256 = await sha256Hex(file);
+
+      // 4. register the version metadata + parse server-side. The server
+      //    runs parseBerthPdf via the buffer from storage; the client
+      //    doesn't ship the raw PDF a second time.
+      const verRes = await apiFetch<{ data: { versionId: string } }>(
+        `/api/v1/berths/${berthId}/pdf-versions`,
+        {
+          method: 'POST',
+          body: {
+            storageKey,
+            fileName: file.name,
+            fileSizeBytes: file.size,
+            sha256,
+          },
+        },
+      );
+      return { versionId: verRes.data.versionId };
+    },
+    onSuccess: () => {
+      void qc.invalidateQueries({ queryKey: ['berth-pdf-versions', berthId] });
+      void qc.invalidateQueries({ queryKey: ['berth', berthId] });
+      toast.success('PDF uploaded.');
+    },
+    onError: (err: Error) => {
+      toast.error('Upload failed', { description: err.message });
+    },
+  });
+
+  const onFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+    if (!file.name.toLowerCase().endsWith('.pdf')) {
+      toast.error('Only PDFs are accepted.');
+      return;
+    }
+    upload.mutate(file);
+    if (fileInputRef.current) fileInputRef.current.value = '';
+  };
+
+  const current = versions?.find((v) => v.isCurrent);
+  const others = versions?.filter((v) => !v.isCurrent) ?? [];
+
+  return (
+    <div className="space-y-6">
+      <Card>
+        <CardHeader className="flex flex-row items-center justify-between pb-3">
+          <CardTitle className="text-sm font-medium">Current PDF</CardTitle>
+          <div>
+            <input
+              ref={fileInputRef}
+              type="file"
+              accept="application/pdf"
+              className="hidden"
+              onChange={onFileChange}
+            />
+            <Button
+              size="sm"
+              onClick={() => fileInputRef.current?.click()}
+              disabled={upload.isPending}
+            >
+              {upload.isPending ? 'Uploading…' : current ? 'Replace PDF' : 'Upload PDF'}
+            </Button>
+          </div>
+        </CardHeader>
+        <CardContent className="pt-0 text-sm">
+          {isLoading ? (
+            <p className="text-muted-foreground">Loading…</p>
+          ) : current ? (
+            <div className="flex flex-wrap items-center gap-2">
+              <a
+                href={current.downloadUrl}
+                target="_blank"
+                rel="noreferrer"
+                className="font-medium underline underline-offset-2"
+              >
+                {current.fileName}
+              </a>
+              <span className="text-muted-foreground">
+                v{current.versionNumber} · {(current.fileSizeBytes / 1024 / 1024).toFixed(2)} MB
+              </span>
+              {current.parseEngine ? <ParseEngineBadge engine={current.parseEngine} /> : null}
+            </div>
+          ) : (
+            <p className="text-muted-foreground">No PDF uploaded yet.</p>
+          )}
+        </CardContent>
+      </Card>
+
+      <Card>
+        <CardHeader className="pb-3">
+          <CardTitle className="text-sm font-medium">Version history</CardTitle>
+        </CardHeader>
+        <CardContent className="pt-0">
+          {others.length === 0 ? (
+            <p className="text-sm text-muted-foreground">No prior versions.</p>
+          ) : (
+            <ul className="divide-y">
+              {others.map((v) => (
+                <li key={v.id} className="flex items-center justify-between py-2 text-sm">
+                  <div>
+                    <a href={v.downloadUrl} target="_blank" rel="noreferrer" className="underline">
+                      {v.fileName}
+                    </a>{' '}
+                    <span className="text-muted-foreground">
+                      v{v.versionNumber} · {(v.fileSizeBytes / 1024 / 1024).toFixed(2)} MB ·{' '}
+                      {new Date(v.uploadedAt).toLocaleDateString()}
+                    </span>
+                  </div>
+                  <Button
+                    size="sm"
+                    variant="outline"
+                    onClick={() => rollback.mutate(v.id)}
+                    disabled={rollback.isPending}
+                  >
+                    Rollback
+                  </Button>
+                </li>
+              ))}
+            </ul>
+          )}
+        </CardContent>
+      </Card>
+
+      {pendingDiff ? (
+        <PdfReconcileDialog
+          berthId={berthId}
+          versionId={pendingDiff.versionId}
+          autoApplied={pendingDiff.autoApplied}
+          conflicts={pendingDiff.conflicts}
+          warnings={pendingDiff.warnings}
+          onClose={() => setPendingDiff(null)}
+        />
+      ) : null}
+    </div>
+  );
+}
+
+function ParseEngineBadge({ engine }: { engine: 'acroform' | 'ocr' | 'ai' }) {
+  const tone = engine === 'acroform' ? 'default' : engine === 'ocr' ? 'secondary' : 'outline';
+  const label = engine === 'acroform' ? 'AcroForm' : engine === 'ocr' ? 'OCR' : 'AI';
+  return <Badge variant={tone}>{label}</Badge>;
+}
+
+async function sha256Hex(file: File): Promise<string> {
+  const buf = await file.arrayBuffer();
+  const hash = await crypto.subtle.digest('SHA-256', buf);
+  return Array.from(new Uint8Array(hash))
+    .map((b) => b.toString(16).padStart(2, '0'))
+    .join('');
+}