Update matching logic: AI scores all candidates, lower threshold, absolute amount, prompt improvements

.cursorrules.md

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+# PROJECT OVERVIEW
+The AI Bookkeeper app helps businesses (especially small businesses and accounting firms) streamline the financial reconciliation process by using AI to match receipts with transactions. It reduces manual bookkeeping work by:
+- Automatically importing receipts and transaction data
+- Using AI to match corresponding records
+- Allowing users to review, approve, and sync reconciled data to QuickBooks
+
+#  PERSONLITY
+Teach me like a senior developer would
+
+#  TECH STACK
+Python
+
+#  ERROR FIXING PROCESS
+Step 1: Explain the error in simple terms
+Step 2: Explain the solution in simple terms
+Step 3: Show how to fix the error in simple terms.
+
+#  BUILDING PROCESS
+Step 1: Explain the build process in simple terms
+Step 2: Explain the solution in simple terms
+Step 3: Show how to build the project
+
+
+#  GITHUB PUSH PROCESS
+git add .
+git commit -m "message"
+Step 3: Show how to build the project
+
+#  IMPORTANT
+Do not try to add extra features. Let your codes be straight to the point
+