add-bank-support

name	add-bank-support
description	Use this skill when the user provides one or more SMS samples and asks to add support for a bank or a new message format from an already supported bank.

Add Bank Support

Use this skill when the user provides SMS samples and asks for bank support.

Rule

Support only the exact sender ID and exact message body pattern provided. Do not guess extra formats.

Workflow

1. Check whether the sender is already supported in lib/src/utils/sms_helpers.dart.
2. Inspect the current extractor style in lib/src/bank_support/extractors/ and the wiring in lib/src/shared/providers/sms_providers.dart.
3. Compare the new sample with the closest existing parser.

New sender

Add a new sender key, create a new extractor, wire it into sms_providers.dart, and add focused tests for the sample.

Existing sender

Update the existing extractor only. Keep older message formats working and add a regression test for the new sample.

Implementation rules

• Keep parsing narrow and explicit.
• Do not invent missing fields.
• Fail safely by skipping messages that do not match the provided sample.
• Always update README.md: if the samples are bank/debit messages, add the bank under Supported Banks; if the samples are credit card messages, add the bank under Supported Credit Cards.
• Sanitize all test data in test/test_data.dart before committing: replace real phone numbers, UPI reference/transaction IDs, payee/person names, and tracking URLs with obvious placeholders (e.g. 9999999999, 123456789012, MERCHANT, XXXXXXXXXX). Keep amounts, dates, card/account numbers, and available balances as-is since tests assert against them.