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tiennm99
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- Expand README with full setup instructions, file structure, and testing notes - Add lesson modules for 3.1–3.5 covering What is GSD through Verify & Beyond - Add course-structure.json, PROJECT_BRIEF.md, and .claude/ commands Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
29 lines
1.0 KiB
Markdown
29 lines
1.0 KiB
Markdown
# Expense Splitter - Project Brief
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## What it does
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Split a restaurant bill fairly among friends, handling the messy reality of shared appetizers, different tip preferences, and tax calculations.
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## Core Features (v1)
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- Add people to the bill (names)
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- Add items with prices
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- Assign items to people (including "shared" for things like appetizers)
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- Tip calculation
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- Choose tip percentage (15%, 18%, 20%, custom)
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- Split method: equal across everyone OR proportional to what they ordered
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- Tax calculation
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- Enter tax amount or percentage
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- Same split options as tip
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- Final summary: "Sarah owes $34.50, Mike owes $28.20..."
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## Nice-to-have (v2)
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- Receipt photo upload with OCR to auto-populate items
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- Venmo/payment request deep links
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- Save and share splits
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- History of past splits
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## Why this is complex
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- Multiple interacting components (people, items, assignments)
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- Real math with edge cases (rounding, shared items, proportional splits)
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- State management across the UI
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- The kind of project where AI quality degradation mid-build causes problems
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