Fix all ESLint errors: remove unused imports, replace any types

- Remove ~60 unused imports and variables across 88 files
- Replace ~80 `any` type annotations with proper types (unknown,
  Record<string, unknown>, or specific types)
- Prefix unused callback args with underscore
- Fix unescaped JSX entities
- Lint now passes cleanly (0 errors, 2 intentional img warnings)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/lib/services/recommendations.ts

@@ -1,4 +1,4 @@
-import { and, eq, isNull } from 'drizzle-orm';
+import { and, eq } from 'drizzle-orm';
 
 import { db } from '@/lib/db';
 import { interests } from '@/lib/db/schema/interests';
@@ -28,7 +28,6 @@ function scoreBerth(
   if (yachtLengthFt && berth.lengthFt) {
     const berthLen = parseFloat(berth.lengthFt);
     if (berthLen >= yachtLengthFt) {
-      const fit = Math.min(100, (berthLen / yachtLengthFt) * 100);
       // Prefer berths that are not too oversized (within 20% extra is ideal)
       const score = berthLen <= yachtLengthFt * 1.2 ? 100 : Math.max(50, 100 - (berthLen / yachtLengthFt - 1.2) * 100);
       reasons['length_fit'] = Math.round(score);
@@ -148,7 +147,7 @@ export async function generateRecommendations(
 
 // ─── List Recommendations ─────────────────────────────────────────────────────
 
-export async function listRecommendations(interestId: string, portId: string) {
+export async function listRecommendations(interestId: string, _portId: string) {
   const rows = await db
     .select({
       id: berthRecommendations.id,