feat: smistamento file non-CAD, rinomina cartelle speciali, guida utente

- Aggiunge cartella __SALTATI: i file non-CAD vengono ora copiati in
  __SALTATI invece di essere ignorati (folderProcessor, zipProcessor)
- Rinomina cartella duplicati in __DUPLICATI per coerenza con le altre
  cartelle speciali (__NON_SMISTATI, __SALTATI)
- Aggiunge pulsante "Anteprima saltati" in UI con anteprima e pulizia
- Aggiunge guida utente HTML/CSS in renderer/docs/ con sidebar navigabile
- Aggiunge menu Help > Documentazione che apre la guida in una finestra
- Imposta DEFAULT_DESTINATION a X:\

services/unrouted.js

@@ -5,8 +5,10 @@ const { getCadInfo } = require('./router');
 
 const PRIMARY_UNROUTED_DIR = '/cadroute/__NON_SMISTATI';
 const HOME_UNROUTED_DIR = path.join(os.homedir(), '.cadroute', '__NON_SMISTATI');
-const PRIMARY_DUPLICATES_DIR = '/cadroute/duplicati';
-const HOME_DUPLICATES_DIR = path.join(os.homedir(), '.cadroute', 'duplicati');
+const PRIMARY_DUPLICATES_DIR = '/cadroute/__DUPLICATI';
+const HOME_DUPLICATES_DIR = path.join(os.homedir(), '.cadroute', '__DUPLICATI');
+const PRIMARY_SKIPPED_DIR = '/cadroute/__SALTATI';
+const HOME_SKIPPED_DIR = path.join(os.homedir(), '.cadroute', '__SALTATI');
 
 const SPECIAL_TARGETS = {
   unrouted: {
@@ -17,6 +19,10 @@ const SPECIAL_TARGETS = {
     primary: PRIMARY_DUPLICATES_DIR,
     fallback: HOME_DUPLICATES_DIR,
   },
+  skipped: {
+    primary: PRIMARY_SKIPPED_DIR,
+    fallback: HOME_SKIPPED_DIR,
+  },
 };
 
 const resolvedDirs = new Map();
@@ -178,6 +184,22 @@ async function prepareDuplicateTarget(fileName) {
   return prepareSpecialTarget('duplicates', fileName);
 }
 
+async function resolveSkippedDir() {
+  return resolveTargetDir('skipped');
+}
+
+async function getSkippedTarget(fileName) {
+  return getTarget('skipped', fileName);
+}
+
+async function listSkippedFiles() {
+  return listTargetFiles('skipped');
+}
+
+async function clearSkippedFiles() {
+  return clearTargetFiles('skipped');
+}
+
 async function listFilesRecursively(rootDir) {
   const files = [];
 
@@ -251,16 +273,22 @@ async function clearDuplicateFiles() {
 module.exports = {
   getUnroutedTarget,
   getDuplicateTarget,
+  getSkippedTarget,
   prepareUnroutedTarget,
   prepareDuplicateTarget,
   resolveUnroutedDir,
   resolveDuplicatesDir,
+  resolveSkippedDir,
   listUnroutedFiles,
   listDuplicateFiles,
+  listSkippedFiles,
   clearUnroutedFiles,
   clearDuplicateFiles,
+  clearSkippedFiles,
   PRIMARY_UNROUTED_DIR,
   HOME_UNROUTED_DIR,
   PRIMARY_DUPLICATES_DIR,
   HOME_DUPLICATES_DIR,
+  PRIMARY_SKIPPED_DIR,
+  HOME_SKIPPED_DIR,
 };