fix: CSV import bugs and dashboard category filtering

- Fix column display for Desjardins-style quoted CSVs (apply preprocessQuotedCSV in header loading)
- Fix column mapping disappearing on back-navigation (generate synthetic headers when hasHeader is false)
- Fix auto-detect picking account number as amount (exclude constant-value columns, treat 0 as empty in debit/credit detection)
- Use category type instead of amount sign for dashboard pie chart and recent transactions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Simpl Résultat",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "identifier": "com.simpl.resultat",
   "build": {
     "beforeDevCommand": "npm run dev",

src/hooks/useImportWizard.ts

@@ -338,7 +338,8 @@ export function useImportWizard() {
           encoding,
           maxLines: skipLines + 5,
         });
-        const parsed = Papa.parse(preview, { delimiter, skipEmptyLines: true });
+        const preprocessed = preprocessQuotedCSV(preview);
+        const parsed = Papa.parse(preprocessed, { delimiter, skipEmptyLines: true });
         const data = parsed.data as string[][];
         const headerRow = hasHeader && data.length > skipLines ? skipLines : -1;
         if (headerRow >= 0 && data[headerRow]) {
@@ -445,6 +446,9 @@ export function useImportWizard() {
 
         if (config.hasHeader && data.length > config.skipLines) {
           headers = data[config.skipLines].map((h) => h.trim());
+        } else if (!config.hasHeader && headers.length === 0 && data.length > config.skipLines) {
+          const firstDataRow = data[config.skipLines];
+          headers = firstDataRow.map((_, i) => `Col ${i}`);
         }
 
         for (let i = startIdx; i < data.length; i++) {

src/services/dashboardService.ts

@@ -56,7 +56,7 @@ export async function getExpensesByCategory(
 ): Promise<CategoryBreakdownItem[]> {
   const db = await getDb();
 
-  const whereClauses: string[] = ["t.amount < 0"];
+  const whereClauses: string[] = ["COALESCE(c.type, 'expense') = 'expense'"];
   const params: unknown[] = [];
   let paramIndex = 1;
 
@@ -99,7 +99,7 @@ export async function getRecentTransactions(
        c.name AS category_name, c.color AS category_color
      FROM transactions t
      LEFT JOIN categories c ON t.category_id = c.id
-     WHERE t.amount < 0
+     WHERE COALESCE(c.type, 'expense') = 'expense'
      ORDER BY t.date DESC, t.id DESC
      LIMIT $1`,
     [limit]

src/utils/csvAutoDetect.ts

@@ -220,17 +220,22 @@ function detectNumericColumns(rows: string[][], colCount: number): number[] {
   for (let col = 0; col < colCount; col++) {
     let numericCount = 0;
     let nonEmpty = 0;
+    const distinctValues = new Set<number>();
 
     for (const row of rows) {
       const cell = row[col]?.trim();
       if (!cell) continue;
       nonEmpty++;
-      if (!isNaN(parseFrenchAmount(cell))) {
+      const val = parseFrenchAmount(cell);
+      if (!isNaN(val)) {
         numericCount++;
+        distinctValues.add(val);
       }
     }
 
     if (nonEmpty > 0 && numericCount / nonEmpty >= 0.5) {
+      // Exclude constant-value columns (e.g., account numbers, transit numbers)
+      if (distinctValues.size <= 1 && nonEmpty > 2) continue;
       result.push(col);
     }
   }
@@ -444,8 +449,10 @@ function isSparseComplementary(
   for (const row of rows) {
     const cellA = row[colA]?.trim();
     const cellB = row[colB]?.trim();
-    const hasA = cellA !== "" && cellA != null && !isNaN(parseFrenchAmount(cellA));
-    const hasB = cellB !== "" && cellB != null && !isNaN(parseFrenchAmount(cellB));
+    const valA = cellA ? parseFrenchAmount(cellA) : NaN;
+    const valB = cellB ? parseFrenchAmount(cellB) : NaN;
+    const hasA = !isNaN(valA) && valA !== 0;
+    const hasB = !isNaN(valB) && valB !== 0;
 
     if (!hasA && !hasB) continue;
     total++;