fix(docker): prevent backend crash loop caused by pdf-parse native deps

pdf-parse@2.4.5 pulls in @napi-rs/canvas (native Skia binary) which
crashes on import in Alpine containers. Moved to lazy require() so the
app starts normally and pdf-parse loads only when PDF conversion is
actually requested.
- Lazy-load pdf-parse in pdfToStatement to avoid startup crash
- Add libc6-compat, fontconfig, freetype to Alpine runner stage
- Increase npm fetch timeouts in both Dockerfiles for slow networks
- Add connectionTimeoutMillis to pg Pool for faster failure detection

Dockerfile.backend

@@ -5,6 +5,11 @@ COPY package.json package-lock.json* ./
 COPY shared ./shared
 COPY backend ./backend
 
+# Увеличенные таймауты для нестабильной сети
+RUN npm config set fetch-retry-mintimeout 20000 && \
+    npm config set fetch-retry-maxtimeout 120000 && \
+    npm config set fetch-timeout 300000
+
 RUN npm install
 
 FROM node:20-alpine AS build
@@ -22,6 +27,10 @@ FROM node:20-alpine AS runner
 WORKDIR /app
 ENV NODE_ENV=production
 
+# @napi-rs/canvas (dep of pdf-parse) ships a musl pre-built binary that
+# needs these compatibility / font libraries at runtime.
+RUN apk add --no-cache libc6-compat fontconfig freetype
+
 COPY --from=build /app/backend/dist ./dist
 COPY --from=build /app/backend/package.json ./package.json
 COPY --from=build /app/node_modules ./node_modules

Dockerfile.frontend

@@ -9,6 +9,11 @@ COPY package.json package-lock.json* tsconfig.json* ./
 COPY shared ./shared
 COPY frontend ./frontend
 
+# Увеличиваем таймауты и повторы для нестабильной сети
+RUN npm config set fetch-retry-mintimeout 20000 && \
+    npm config set fetch-retry-maxtimeout 120000 && \
+    npm config set fetch-timeout 300000
+
 # Устанавливаем зависимости из корня
 RUN npm install
 

backend/src/db/pool.ts

@@ -7,4 +7,5 @@ export const pool = new Pool({
   database: config.db.database,
   user: config.db.user,
   password: config.db.password,
+  connectionTimeoutMillis: 5000,
 });

backend/src/services/pdfToStatement.ts

@@ -1,4 +1,3 @@
-import { PDFParse } from 'pdf-parse';
 import OpenAI from 'openai';
 import { config } from '../config';
 import type { StatementFile } from '@family-budget/shared';
@@ -64,6 +63,18 @@ export function isPdfConversionError(r: unknown): r is PdfConversionError {
   );
 }
 
+// Lazy-loaded to avoid crashing the app at startup — pdf-parse pulls in
+// @napi-rs/canvas (native Skia binary) which may fail on Alpine.
+let _PDFParse: typeof import('pdf-parse')['PDFParse'] | undefined;
+function loadPDFParse() {
+  if (!_PDFParse) {
+    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    const mod = require('pdf-parse') as typeof import('pdf-parse');
+    _PDFParse = mod.PDFParse;
+  }
+  return _PDFParse;
+}
+
 export async function convertPdfToStatement(
   buffer: Buffer,
 ): Promise<StatementFile | PdfConversionError> {
@@ -77,6 +88,7 @@ export async function convertPdfToStatement(
 
   let text: string;
   try {
+    const PDFParse = loadPDFParse();
     const parser = new PDFParse({ data: buffer });
     const result = await parser.getText();
     text = result.text || '';

frontend/src/components/ImportModal.tsx

@@ -89,7 +89,7 @@ export function ImportModal({ onClose, onDone }: Props) {
 
           {result && (
             <div className="import-result">
-              <div className="import-result-icon">&check;</div>
+              <div className="import-result-icon" aria-hidden="true">✓</div>
               <h3>Импорт завершён</h3>
               <table className="import-stats">
                 <tbody>