perf: preserve Docker npm cache - version bumps only touch version.txt, not package.json

update-version.js

@@ -5,24 +5,19 @@
 const fs   = require('fs');
 const path = require('path');
 
-const versionFile  = path.join(__dirname, 'dental-server', 'version.txt');
-const packageFile  = path.join(__dirname, 'dental-server', 'package.json');
-const indexFile    = path.join(__dirname, 'dental-server', 'public', 'index.html');
+const versionFile = path.join(__dirname, 'dental-server', 'version.txt');
+const indexFile   = path.join(__dirname, 'dental-server', 'public', 'index.html');
 
 const current = fs.readFileSync(versionFile, 'utf8').trim();
 const parts   = current.split('.').map(Number);
 parts[2]++;                         // bump PATCH
 const next = parts.join('.');
 
-// version.txt
+// version.txt — fonte de verdade do número de versão
 fs.writeFileSync(versionFile, next + '\n');
 
-// package.json
-const pkg = JSON.parse(fs.readFileSync(packageFile, 'utf8'));
-pkg.version = next;
-fs.writeFileSync(packageFile, JSON.stringify(pkg, null, 2) + '\n');
-
-// index.html — substitui qualquer v{X.Y.Z} dentro do <span> da sidebar
+// index.html — substitui v{X.Y.Z} dentro do <span> da sidebar
+// (package.json NÃO é alterado para preservar o cache de npm install no Docker)
 let html = fs.readFileSync(indexFile, 'utf8');
 html = html.replace(
   /(RF Dental.*?<span[^>]*>)\s*v[\d.]+\s*(<\/span>)/s,