From 3f1f6eb6b9e86a0da4b3992bd1d64aabd35d9b9a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sat, 14 Feb 2026 17:08:08 +0000
Subject: [PATCH 01/11] Initial plan


From fdc970724259e00732c5c997be969131d0da9f5b Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sat, 14 Feb 2026 17:12:48 +0000
Subject: [PATCH 02/11] feat: Add Copilot agent configuration and contributing
 guidelines

- Create .github/agents.md with agent personas (test, docs, build, code agents)
- Add CI workflow for automated testing on PRs
- Create CONTRIBUTING.md with development guidelines
- Update README.md with contributing section

Co-authored-by: frouaix <876178+frouaix@users.noreply.github.com>
---
 .github/agents.md        | 265 +++++++++++++++++++++++++++++++++
 .github/workflows/ci.yml |  86 +++++++++++
 CONTRIBUTING.md          | 308 +++++++++++++++++++++++++++++++++++++++
 README.md                |  24 +++
 4 files changed, 683 insertions(+)
 create mode 100644 .github/agents.md
 create mode 100644 .github/workflows/ci.yml
 create mode 100644 CONTRIBUTING.md

diff --git a/.github/agents.md b/.github/agents.md
new file mode 100644
index 0000000..cb69e37
--- /dev/null
+++ b/.github/agents.md
@@ -0,0 +1,265 @@
+# GitHub Copilot Agent Personas
+
+This file defines specialized agent personas for the Espargne retirement planning application. These agents have specific roles, boundaries, and capabilities tailored to this project.
+
+---
+
+## Test Agent
+
+**Name**: `test-agent`  
+**Description**: Writes and maintains comprehensive test suites for the TypeScript/React retirement planning application.
+
+### Responsibilities
+- Write new unit tests using Vitest framework
+- Update existing tests when code changes
+- Ensure test coverage for financial calculations
+- Validate Big.js precision in tests
+- Test React component behavior
+
+### Technology Stack
+- **Test Framework**: Vitest 3.0.2
+- **React Testing**: @testing-library/react 16.1.0
+- **Assertion Library**: Vitest built-in matchers
+- **Coverage Tool**: v8 (via Vitest)
+
+### Commands
+```bash
+pnpm test run              # Run all tests once
+pnpm test                  # Watch mode
+pnpm test:ui               # Interactive UI
+pnpm test:coverage         # Generate coverage report
+```
+
+### Boundaries & Constraints
+- ✅ **DO**: Write tests in `src/tests/` directory
+- ✅ **DO**: Use Big.js helpers for financial assertions
+- ✅ **DO**: Follow existing test patterns and naming conventions
+- ✅ **DO**: Ensure tests are deterministic and isolated
+- ❌ **DO NOT**: Modify production code in `src/lib/` without explicit request
+- ❌ **DO NOT**: Remove or skip existing tests
+- ❌ **DO NOT**: Use floating-point numbers for currency assertions
+- ❌ **DO NOT**: Commit test artifacts or coverage files
+
+### Test Patterns
+```typescript
+// Good: Using Big.js for financial assertions
+import { toBig, multiply } from '../lib/bigHelpers';
+
+test('calculates correct balance growth', () => {
+  const balance = toBig(100000);
+  const growth = multiply(balance, 0.05);
+  expect(growth.toString()).toBe('5000.00');
+});
+
+// Bad: Using raw numbers for currency
+test('calculates balance growth', () => {
+  const balance = 100000;
+  const growth = balance * 0.05;  // ❌ Floating-point errors
+  expect(growth).toBe(5000);
+});
+```
+
+### Coverage Targets
+- **Overall**: 80%+ coverage maintained
+- **Critical Paths**: 100% coverage for:
+  - Tax calculations (`taxCalculator.ts`)
+  - RMD calculations (`rmdCalculator.ts`)
+  - Withdrawal coordinator (`withdrawalCoordinator.ts`)
+  - Big.js helpers (`bigHelpers.ts`)
+
+---
+
+## Documentation Agent
+
+**Name**: `docs-agent`  
+**Description**: Maintains and improves documentation for the retirement planning application.
+
+### Responsibilities
+- Update README.md and documentation files
+- Keep inline code comments current
+- Update API documentation when interfaces change
+- Maintain architectural decision records
+- Update copilot-instructions.md when patterns change
+
+### Technology Stack
+- **Format**: Markdown
+- **Code Docs**: TSDoc comments
+- **Architecture Docs**: ADR format (optional)
+
+### Commands
+```bash
+pnpm build       # Verify TypeScript compiles
+pnpm dev         # Test documentation examples work
+```
+
+### Boundaries & Constraints
+- ✅ **DO**: Update documentation when code changes
+- ✅ **DO**: Keep examples accurate and tested
+- ✅ **DO**: Use clear, concise language
+- ✅ **DO**: Include code examples with proper syntax highlighting
+- ❌ **DO NOT**: Make breaking changes to public APIs
+- ❌ **DO NOT**: Remove or significantly alter existing documentation without discussion
+- ❌ **DO NOT**: Include sensitive information or credentials
+- ❌ **DO NOT**: Modify `.github/copilot-instructions.md` without clear justification
+
+### Documentation Files
+- `README.md` - Project overview, setup, features
+- `.github/copilot-instructions.md` - Coding patterns and conventions
+- `.github/instructions/CodingConventions.instructions.md` - Code style rules
+- `VISUALIZATION_PORT.md` - Chart implementation details
+- `WITHDRAWAL_COORDINATOR.md` - Withdrawal strategy documentation
+
+---
+
+## Build Agent
+
+**Name**: `build-agent`  
+**Description**: Handles build configuration, dependencies, and deployment setup.
+
+### Responsibilities
+- Update build configuration when needed
+- Manage dependency updates (with security checks)
+- Optimize build performance
+- Configure deployment pipelines
+- Maintain GitHub Actions workflows
+
+### Technology Stack
+- **Build Tool**: Vite 7.3.1
+- **Package Manager**: pnpm 10.x
+- **CI/CD**: GitHub Actions
+- **Deployment**: GitHub Pages (static site)
+
+### Commands
+```bash
+pnpm install     # Install dependencies
+pnpm build       # Production build
+pnpm preview     # Test production build locally
+```
+
+### Boundaries & Constraints
+- ✅ **DO**: Test build changes locally before committing
+- ✅ **DO**: Check security advisories before updating dependencies
+- ✅ **DO**: Maintain Node.js version compatibility (20.19+, 22.12+)
+- ✅ **DO**: Preserve build output size (~686KB target)
+- ❌ **DO NOT**: Update major versions without testing
+- ❌ **DO NOT**: Add unnecessary dependencies
+- ❌ **DO NOT**: Change deployment configuration without approval
+- ❌ **DO NOT**: Commit `node_modules/`, `dist/`, or lock files unnecessarily
+
+### Critical Dependencies
+- `big.js@7.0.1` - Must maintain version for financial precision
+- `react@19.2.0` - Core framework
+- `vite@7.3.1` - Build tool (requires Node 20.19+/22.12+)
+- `recharts@2.12.7` - Visualization library
+
+---
+
+## Code Agent (Default)
+
+**Name**: `code-agent`  
+**Description**: General-purpose coding agent for feature development and bug fixes.
+
+### Responsibilities
+- Implement new features
+- Fix bugs and issues
+- Refactor code for maintainability
+- Optimize performance
+- Ensure code quality and type safety
+
+### Technology Stack
+- **Language**: TypeScript 5.9.3 (strict mode)
+- **Framework**: React 19.2.0
+- **State Management**: React hooks + localStorage
+- **Styling**: CSS Modules
+- **Financial Math**: Big.js 7.0.1
+
+### Commands
+```bash
+pnpm dev         # Start dev server
+pnpm build       # Build and type check
+pnpm test        # Run tests
+```
+
+### Boundaries & Constraints
+- ✅ **DO**: Use Big.js for all financial calculations
+- ✅ **DO**: Follow existing code patterns and conventions
+- ✅ **DO**: Write tests for new features
+- ✅ **DO**: Use TypeScript strict mode
+- ✅ **DO**: Follow form visibility toggle pattern
+- ❌ **DO NOT**: Use JavaScript number type for currency
+- ❌ **DO NOT**: Inline CSS styles in JSX
+- ❌ **DO NOT**: Add console.log statements in production code
+- ❌ **DO NOT**: Modify financial calculation logic without extensive testing
+- ❌ **DO NOT**: Change localStorage keys without migration path
+
+### Critical Code Patterns
+See `.github/copilot-instructions.md` for detailed patterns including:
+- Big.js for financial calculations
+- Account type discrimination
+- localStorage persistence
+- Form callback pattern
+- Component organization
+
+---
+
+## General Guidelines for All Agents
+
+### Security & Privacy
+- Never commit secrets, API keys, or credentials
+- Validate all user inputs
+- Use Big.js to avoid floating-point security issues
+- Keep dependencies updated for security patches
+
+### Quality Standards
+- Maintain TypeScript strict mode compliance
+- Write deterministic, testable code
+- Follow existing architectural patterns
+- Keep functions small and focused
+- Use explicit return types
+
+### Collaboration
+- Create clear, focused PRs
+- Write descriptive commit messages
+- Request review for significant changes
+- Update documentation with code changes
+- Run tests before committing
+
+### Temporary Files
+**Always use `/tmp/espargne-web/` for temporary files:**
+```bash
+mkdir -p /tmp/espargne-web
+# Use for: logs, test artifacts, debug output, temporary scripts
+# Clean up when finished
+```
+
+---
+
+## Agent Selection Guide
+
+**For testing tasks**: Use `@test-agent`
+- Writing new tests
+- Fixing failing tests
+- Improving test coverage
+- Test refactoring
+
+**For documentation**: Use `@docs-agent`
+- README updates
+- API documentation
+- Architecture docs
+- Comment updates
+
+**For build/deploy**: Use `@build-agent`
+- Dependency updates
+- Build configuration
+- CI/CD workflows
+- Performance optimization
+
+**For feature work**: Use `@code-agent` (default)
+- New features
+- Bug fixes
+- Code refactoring
+- UI improvements
+
+**For complex tasks**: Combine agents
+- Feature + tests: `@code-agent` then `@test-agent`
+- Build change + docs: `@build-agent` then `@docs-agent`
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..6d93f20
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,86 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    
+    strategy:
+      matrix:
+        node-version: [20.19.x, 22.12.x]
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
+      
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v4
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'pnpm'
+      
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+      
+      - name: Run linter
+        run: pnpm lint || true
+        continue-on-error: true
+      
+      - name: Run type check
+        run: pnpm exec tsc --noEmit
+      
+      - name: Run tests (if tests exist)
+        run: pnpm test run || echo "No tests found - skipping"
+        continue-on-error: true
+      
+      - name: Build
+        run: pnpm build
+      
+      - name: Generate coverage report (if tests exist)
+        if: matrix.node-version == '22.12.x'
+        run: pnpm test:coverage || echo "No tests found - skipping coverage"
+        continue-on-error: true
+      
+      - name: Upload coverage to GitHub
+        if: matrix.node-version == '22.12.x'
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage/
+          retention-days: 7
+
+  lint:
+    name: Lint Code
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 10
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22.12.x
+          cache: 'pnpm'
+      
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+      
+      - name: Run ESLint
+        run: pnpm lint
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..9fd1b25
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,308 @@
+# Contributing to Espargne
+
+Thank you for your interest in contributing to Espargne! This document provides guidelines for contributing to the project.
+
+## Table of Contents
+
+- [Code of Conduct](#code-of-conduct)
+- [Getting Started](#getting-started)
+- [Development Workflow](#development-workflow)
+- [Coding Standards](#coding-standards)
+- [Testing Guidelines](#testing-guidelines)
+- [Pull Request Process](#pull-request-process)
+- [Working with Copilot Agent](#working-with-copilot-agent)
+
+## Code of Conduct
+
+This project follows standard open-source community guidelines:
+- Be respectful and inclusive
+- Focus on constructive feedback
+- Prioritize collaboration over ego
+- Help others learn and grow
+
+## Getting Started
+
+### Prerequisites
+
+- Node.js 20.19+ or 22.12+
+- pnpm package manager (10.x)
+- Git for version control
+
+### Initial Setup
+
+```bash
+# Clone the repository
+git clone https://github.com/frouaix/espargne-web.git
+cd espargne-web
+
+# Install dependencies
+pnpm install
+
+# Start development server
+pnpm dev
+
+# Run tests
+pnpm test
+```
+
+The development server will be available at `http://localhost:5174`.
+
+## Development Workflow
+
+### 1. Create a Branch
+
+```bash
+git checkout -b feature/your-feature-name
+# or
+git checkout -b fix/bug-description
+```
+
+Branch naming conventions:
+- `feature/` - New features
+- `fix/` - Bug fixes
+- `docs/` - Documentation changes
+- `refactor/` - Code refactoring
+- `test/` - Test additions or updates
+
+### 2. Make Changes
+
+- Follow the coding standards (see below)
+- Write tests for new functionality
+- Update documentation as needed
+- Keep commits small and focused
+
+### 3. Test Your Changes
+
+```bash
+# Run linter
+pnpm lint
+
+# Run type check
+pnpm build  # Includes type checking
+
+# Run tests
+pnpm test run
+
+# Generate coverage report
+pnpm test:coverage
+```
+
+### 4. Commit Your Changes
+
+Write clear, descriptive commit messages:
+
+```bash
+git add .
+git commit -m "feat: Add Monte Carlo simulation variance control"
+# or
+git commit -m "fix: Correct RMD calculation for age 73-75"
+# or
+git commit -m "docs: Update withdrawal strategy documentation"
+```
+
+Commit message prefixes:
+- `feat:` - New feature
+- `fix:` - Bug fix
+- `docs:` - Documentation only
+- `style:` - Code style/formatting
+- `refactor:` - Code refactoring
+- `test:` - Test changes
+- `chore:` - Build/tooling changes
+
+### 5. Push and Create PR
+
+```bash
+git push origin your-branch-name
+```
+
+Then create a Pull Request on GitHub.
+
+## Coding Standards
+
+### TypeScript Conventions
+
+See `.github/instructions/CodingConventions.instructions.md` for detailed rules. Key points:
+
+- **Always use semicolons** (`;`)
+- **Use explicit return types** for functions
+- **Prefer destructuring** over direct property access
+- **No console.log** in production code
+- **No inline CSS** - use CSS Modules or styled components
+
+### Financial Calculations
+
+**CRITICAL**: Always use Big.js for monetary values:
+
+```typescript
+// ✅ Correct
+import { toBig, multiply } from '../lib/bigHelpers';
+const balance = toBig(100000);
+const growth = multiply(balance, 0.05);
+
+// ❌ Wrong - Floating-point errors
+const balance = 100000;
+const growth = balance * 0.05;
+```
+
+### Component Patterns
+
+Follow established patterns (see `.github/copilot-instructions.md`):
+- Form visibility toggle pattern
+- localStorage persistence pattern
+- Account type discrimination
+- Form callback pattern
+
+## Testing Guidelines
+
+### Test Coverage Requirements
+
+- **Minimum 80% overall coverage**
+- **100% coverage for critical paths**:
+  - Tax calculations
+  - RMD calculations
+  - Withdrawal coordination
+  - Big.js helpers
+
+### Writing Tests
+
+```typescript
+import { describe, it, expect } from 'vitest';
+import { toBig, multiply } from '../lib/bigHelpers';
+
+describe('Financial Calculation', () => {
+  it('should calculate correct balance growth', () => {
+    const balance = toBig(100000);
+    const rate = toBig(0.05);
+    const growth = multiply(balance, rate);
+    
+    expect(growth.toString()).toBe('5000.00');
+  });
+});
+```
+
+### Running Tests
+
+```bash
+# Run all tests
+pnpm test run
+
+# Watch mode
+pnpm test
+
+# UI mode
+pnpm test:ui
+
+# Coverage report
+pnpm test:coverage
+```
+
+## Pull Request Process
+
+### Before Submitting
+
+1. ✅ All tests pass (`pnpm test run`)
+2. ✅ Linter passes (`pnpm lint`)
+3. ✅ Build succeeds (`pnpm build`)
+4. ✅ Coverage maintained or improved
+5. ✅ Documentation updated if needed
+6. ✅ No console.log statements in code
+7. ✅ Git history is clean (squash if needed)
+
+### PR Template
+
+When creating a PR, include:
+
+```markdown
+## Description
+Brief description of changes
+
+## Type of Change
+- [ ] Bug fix
+- [ ] New feature
+- [ ] Documentation update
+- [ ] Refactoring
+- [ ] Testing
+
+## Testing
+- [ ] All existing tests pass
+- [ ] New tests added for new functionality
+- [ ] Manual testing completed
+
+## Checklist
+- [ ] Code follows project conventions
+- [ ] No console.log statements
+- [ ] Big.js used for all financial calculations
+- [ ] Documentation updated
+- [ ] Tests pass
+- [ ] Build succeeds
+```
+
+### Review Process
+
+1. **Automated Checks**: CI workflow runs automatically
+2. **Code Review**: Maintainer reviews code quality and approach
+3. **Feedback**: Address any requested changes
+4. **Approval**: Once approved, PR will be merged
+5. **Deployment**: Changes deploy automatically via GitHub Pages
+
+### Review Expectations
+
+- Respond to feedback within 48 hours
+- Be open to suggestions and improvements
+- Explain your approach if asked
+- Update PR based on feedback
+
+## Working with Copilot Agent
+
+This repository is configured for GitHub Copilot coding agent. See `.github/agents.md` for agent-specific guidelines.
+
+### Agent Personas
+
+- `@test-agent` - Testing tasks
+- `@docs-agent` - Documentation updates
+- `@build-agent` - Build/deployment configuration
+- `@code-agent` - General development (default)
+
+### Assigning Issues to Copilot
+
+When creating issues for Copilot agent:
+
+1. **Be specific**: Clear goal, acceptance criteria, affected files
+2. **Set boundaries**: What should/shouldn't be changed
+3. **Provide context**: Link to related issues or docs
+4. **Start small**: Well-scoped tasks work best
+
+Example:
+```markdown
+## Task
+Add validation for Social Security claiming age
+
+## Acceptance Criteria
+- Validate age is between 62-70
+- Show error message for invalid ages
+- Update tests to cover validation
+
+## Files to Modify
+- src/components/SSAIncomeForm.tsx
+- src/tests/integration/SSAIncomeForm.test.tsx
+
+## Constraints
+- Use existing form validation pattern
+- Don't modify SSA calculation logic
+- Include unit tests
+```
+
+## Getting Help
+
+- **Documentation**: See `.github/copilot-instructions.md`
+- **Issues**: Open a GitHub issue for bugs or feature requests
+- **Questions**: Start a GitHub Discussion
+- **Security**: Email security concerns privately
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the MIT License.
+
+---
+
+Thank you for contributing to Espargne! 🎉
diff --git a/README.md b/README.md
index 352511c..b6e2cc4 100644
--- a/README.md
+++ b/README.md
@@ -216,6 +216,30 @@ This software is provided "AS IS" under the MIT License, WITHOUT WARRANTY OF ANY
 
 **By using this application, you acknowledge that you understand these limitations and accept full responsibility for your financial decisions.**
 
+## Contributing
+
+Contributions are welcome! This project is set up to work with GitHub Copilot coding agent.
+
+- See [CONTRIBUTING.md](CONTRIBUTING.md) for development guidelines and workflow
+- See [.github/agents.md](.github/agents.md) for Copilot agent personas and boundaries
+- See [.github/copilot-instructions.md](.github/copilot-instructions.md) for detailed coding patterns
+
+### Quick Start for Contributors
+
+```bash
+git clone https://github.com/frouaix/espargne-web.git
+cd espargne-web
+pnpm install
+pnpm dev
+pnpm test
+```
+
+Before submitting a PR:
+- ✅ Run tests: `pnpm test run`
+- ✅ Run linter: `pnpm lint`
+- ✅ Run build: `pnpm build`
+- ✅ Update documentation if needed
+
 ## License
 
 MIT License - see [LICENSE](LICENSE) file for details.

From eb6332e2c76f9a3b2da267c7f96eab666747f450 Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 11:47:44 -0800
Subject: [PATCH 03/11] Update .github/workflows/ci.yml

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/workflows/ci.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6d93f20..892bfbd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -58,6 +58,7 @@ jobs:
         with:
           name: coverage-report
           path: coverage/
+          if-no-files-found: ignore
           retention-days: 7
 
   lint:

From 92b8a5dccd7c565368c036041ea872fdd5be4d2a Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 11:47:56 -0800
Subject: [PATCH 04/11] Update .github/agents.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/agents.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/agents.md b/.github/agents.md
index cb69e37..de2aaa3 100644
--- a/.github/agents.md
+++ b/.github/agents.md
@@ -17,7 +17,7 @@ This file defines specialized agent personas for the Espargne retirement plannin
 - Test React component behavior
 
 ### Technology Stack
-- **Test Framework**: Vitest 3.0.2
+- **Test Framework**: Vitest 4.0.18
 - **React Testing**: @testing-library/react 16.1.0
 - **Assertion Library**: Vitest built-in matchers
 - **Coverage Tool**: v8 (via Vitest)

From bb84908e7dc5a1361adcad9b360bc7a0724ef3a4 Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 11:48:07 -0800
Subject: [PATCH 05/11] Update .github/agents.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/agents.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/agents.md b/.github/agents.md
index de2aaa3..2bc33a7 100644
--- a/.github/agents.md
+++ b/.github/agents.md
@@ -18,7 +18,7 @@ This file defines specialized agent personas for the Espargne retirement plannin
 
 ### Technology Stack
 - **Test Framework**: Vitest 4.0.18
-- **React Testing**: @testing-library/react 16.1.0
+- **React Testing**: @testing-library/react 16.3.2
 - **Assertion Library**: Vitest built-in matchers
 - **Coverage Tool**: v8 (via Vitest)
 

From 4f546c5ed9509cbc554b1b70a6c60dd9fd7c0888 Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 11:48:19 -0800
Subject: [PATCH 06/11] Update .github/agents.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/agents.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/agents.md b/.github/agents.md
index 2bc33a7..34ea1c4 100644
--- a/.github/agents.md
+++ b/.github/agents.md
@@ -124,7 +124,7 @@ pnpm dev         # Test documentation examples work
 - Maintain GitHub Actions workflows
 
 ### Technology Stack
-- **Build Tool**: Vite 7.3.1
+- **Build Tool**: Vite 7.2.4
 - **Package Manager**: pnpm 10.x
 - **CI/CD**: GitHub Actions
 - **Deployment**: GitHub Pages (static site)

From 0d518627454a06f89e7e85802631c15410b531c9 Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 11:48:31 -0800
Subject: [PATCH 07/11] Update .github/agents.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/agents.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/agents.md b/.github/agents.md
index 34ea1c4..954eedb 100644
--- a/.github/agents.md
+++ b/.github/agents.md
@@ -149,7 +149,7 @@ pnpm preview     # Test production build locally
 ### Critical Dependencies
 - `big.js@7.0.1` - Must maintain version for financial precision
 - `react@19.2.0` - Core framework
-- `vite@7.3.1` - Build tool (requires Node 20.19+/22.12+)
+- `vite@7.2.4` - Build tool (requires Node 20.19+/22.12+)
 - `recharts@2.12.7` - Visualization library
 
 ---

From 554c4ec634091be1af28b0aaac6dd42f4ac3ddc9 Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 11:48:44 -0800
Subject: [PATCH 08/11] Update .github/workflows/ci.yml

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/workflows/ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 892bfbd..398eaaf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
         run: pnpm install --frozen-lockfile
       
       - name: Run linter
-        run: pnpm lint || true
+        run: pnpm lint
         continue-on-error: true
       
       - name: Run type check

From 3235c08813e60a5e0b0f9bc0e8e6aa9eae802341 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sat, 14 Feb 2026 19:50:42 +0000
Subject: [PATCH 09/11] fix: Remove duplicate linting from test job in CI
 workflow

Keep only the dedicated lint job to avoid confusion about whether linting failures should block merges. The test job now focuses on type checking, testing, and building, while the lint job provides a clear, mandatory quality gate for code style.

Co-authored-by: frouaix <876178+frouaix@users.noreply.github.com>
---
 .github/workflows/ci.yml | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 398eaaf..ca73dce 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,10 +33,6 @@ jobs:
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
       
-      - name: Run linter
-        run: pnpm lint
-        continue-on-error: true
-      
       - name: Run type check
         run: pnpm exec tsc --noEmit
       

From 803d5aeb750257b313bbc96485939207f0655e2e Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 12:05:38 -0800
Subject: [PATCH 10/11] Update .github/workflows/ci.yml

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/workflows/ci.yml | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca73dce..c92a5a8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,18 +43,21 @@ jobs:
       - name: Build
         run: pnpm build
       
-      - name: Generate coverage report (if tests exist)
+      - name: Clean coverage directory
         if: matrix.node-version == '22.12.x'
-        run: pnpm test:coverage || echo "No tests found - skipping coverage"
-        continue-on-error: true
+        run: rm -rf coverage
       
-      - name: Upload coverage to GitHub
+      - name: Generate coverage report
         if: matrix.node-version == '22.12.x'
+        run: pnpm test:coverage
+      
+      - name: Upload coverage to GitHub
+        if: matrix.node-version == '22.12.x' && hashFiles('coverage/coverage-final.json') != ''
         uses: actions/upload-artifact@v4
         with:
           name: coverage-report
           path: coverage/
-          if-no-files-found: ignore
+          if-no-files-found: error
           retention-days: 7
 
   lint:

From 23cf8c99336178c7952cbabfc227071b6d518053 Mon Sep 17 00:00:00 2001
From: Francois Rouaix <876178+frouaix@users.noreply.github.com>
Date: Sat, 14 Feb 2026 12:06:00 -0800
Subject: [PATCH 11/11] Update .github/workflows/ci.yml

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Francois Rouaix <876178+frouaix@users.noreply.github.com>
---
 .github/workflows/ci.yml | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c92a5a8..3339480 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,9 +33,6 @@ jobs:
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
       
-      - name: Run type check
-        run: pnpm exec tsc --noEmit
-      
       - name: Run tests (if tests exist)
         run: pnpm test run || echo "No tests found - skipping"
         continue-on-error: true