fix(audit-final): pre-merge hardening + expense receipt UI

Final audit pass on feat/berth-recommender (3 parallel Opus agents)
caught 5 critical and ~12 high-severity findings. All addressed in-branch;
medium/low items deferred to docs/audit-final-deferred.md.

Critical:
- Add filesystem-backend PUT handler at /api/storage/[token] so
  presigned uploads stop 405-ing in filesystem mode (every browser-driven
  berth-PDF + brochure upload was broken). Same token-verify + replay
  protection as GET, plus magic-byte gate when c=application/pdf.
- Forward req.signal into streamExpensePdf so an aborted 1000-receipt
  export no longer keeps grinding for minutes.
- Strengthen Content-Disposition filename sanitization: \s matches CR/LF
  which would let documentName forge headers; restrict to [\w. -]+ and
  add filename* RFC 5987 fallback.
- Lock public berths feed behind an explicit slug allowlist instead of
  ?portSlug= enumeration.
- Reject cross-port interest_berths upserts (defense-in-depth on top of
  the recommender SQL port filter).

High:
- Recommender: width-only feasibility now caps length via L/W ratio so a
  200ft berth doesn't surface for a 30ft beam request; total_interest_count
  filters out junction rows whose interest is in another port.
- Mooring normalization follow-up migration (0034) catches un-hyphenated
  padded forms (A01) the original 0024 WHERE missed.
- Send-out rate limit moved AFTER validation and scoped per-(port, user)
  so typos don't burn a slot and a multi-port rep can't be DoS'd by
  another tenant.
- Default-brochure path now blocks an archived row from sneaking through
  the partial unique index.
- NocoDB import --update-snapshot honoured under --dry-run so reps can
  refresh the seed JSON without committing DB writes.
- PDF export: orderBy desc(expenseDate); apply isNull(archivedAt) when
  expenseIds are passed (was bypassed); flag rate-unavailable rows with
  an amber footer instead of silently treating them as 1:1; skip the
  USD->EUR chain when source already matches target.
- expense-form-dialog: revokeObjectURL captures the URL in the closure
  instead of revoking the still-displayed one; reset upload state on
  close.
- scan/page: handleClearReceipt resets in-flight scan/upload mutations;
  Save disabled while upload pending.
- updateExpense re-asserts receipt-or-acknowledgement at the merged
  row so PATCH can't slip past the create-time refine.

Plus the in-progress receipt upload UI for the expense form dialog
(receipt picker + "I have no receipt" checkbox + warning banner) and
a noReceiptAcknowledged flag on ExpenseRow for edit-mode hydration.

Includes the canonical plan doc (referenced in CLAUDE.md), the handoff
prompt, and a deferred-findings index for follow-up issues.

1163/1163 vitest passing. Typecheck clean.

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

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

@@ -415,6 +415,14 @@ export async function recommendBerths(args: RecommendBerthsArgs): Promise<Recomm
     predicates.push(
       sql`b.length_ft::numeric <= ${interestInput.desiredLengthFt}::numeric * ${oversizeMultiplier}::numeric`,
     );
+  } else if (interestInput.desiredWidthFt !== null) {
+    // Width-only feasibility: cap the length using a generous L/W ratio
+    // so the recommender doesn't surface a 200 ft berth for a 30 ft beam
+    // request. Plan §4.4 promised an upper bound; without this branch the
+    // null-length path skipped the cap entirely.
+    predicates.push(
+      sql`b.length_ft::numeric <= ${interestInput.desiredWidthFt}::numeric * 8::numeric * ${oversizeMultiplier}::numeric`,
+    );
   }
   if (interestInput.desiredWidthFt !== null) {
     predicates.push(sql`b.width_ft::numeric >= ${interestInput.desiredWidthFt}`);
@@ -495,7 +503,11 @@ export async function recommendBerths(args: RecommendBerthsArgs): Promise<Recomm
         -- rows reports 0 — the LEFT JOIN otherwise produces a single
         -- NULL-right-side row that COUNT(*) would tally as 1 and inflate
         -- the heat interest-count component for berths with no history.
-        COUNT(ib.berth_id) AS total_interest_count,
+        -- The FILTER also enforces port isolation defense-in-depth: an
+        -- orphan junction row whose interest belongs to a different port
+        -- (which the new cross-port guard now prevents but pre-existing
+        -- data may carry) shouldn't inflate this count.
+        COUNT(ib.berth_id) FILTER (WHERE i.id IS NOT NULL) AS total_interest_count,
         COUNT(*) FILTER (WHERE i.eoi_status = 'signed') AS eoi_signed_count
       FROM feasible f
       LEFT JOIN interest_berths ib ON ib.berth_id = f.id