fix: resolve critical bugs in receipt processing flow

[sezallagwal]

Closes #29

Changes

Critical

• Infinite loop: Added check in ReceiptProcessorApp.ts to skip processing messages from the bot itself.

Logic & Data Integrity

• Duplicate saves: Removed premature save call in imageHandler.ts; now only saves on user confirmation.
• Updates creating duplicates: Fixed lookup in receiptRepository.ts to exclude date from associations (date change was causing lookup miss).
• NaN prices: Added safeParseNumber() in userInterfaceHandler.ts that falls back to original value on invalid input.

UI & Parsing

• Broken Edit/Delete buttons: Added lazy init for uiHandler in ReceiptProcessorApp.ts.
• Date parsing: Rewrote date.ts to handle all formats: 28/08/22, 18th Aug, Aug 18, 2022, ISO, etc.

Files changed

• app/ReceiptProcessorApp.ts
• app/src/commands/UserCommandHandler.ts
• app/src/handler/imageHandler.ts
• app/src/handler/receiptHandler.ts
• app/src/handler/userInterfaceHandler.ts
• app/src/prompt_library/client.ts
• app/src/repository/receiptRepository.ts
• app/src/utils/date.ts

DEMO

Recording.2026-01-21.074137.mp4