chore: Add project configuration and documentation

- Kilocode AI agent rules and guidelines
- Setup and implementation guides
- Architecture documentation
- Build and verification references

.kilocode/rules/file_boundaries.md

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+# File Modification Boundaries
+
+You are implementing the OMS (Order Management System) for the NT8 SDK project.
+
+## Allowed Modifications
+
+You MAY create and modify files in these directories ONLY:
+
+### Core OMS Implementation
+- `src/NT8.Core/OMS/*.cs` - All OMS implementation files
+- `src/NT8.Core/OMS/**/*.cs` - Any subdirectories under OMS
+
+### Testing
+- `tests/NT8.Core.Tests/OMS/*.cs` - OMS unit tests
+- `tests/NT8.Core.Tests/OMS/**/*.cs` - OMS test subdirectories
+- `tests/NT8.Core.Tests/Mocks/*.cs` - Mock implementations (MockNT8OrderAdapter)
+
+## Strictly Forbidden Modifications
+
+You MUST NOT modify any existing files in these locations:
+
+### Core Interfaces and Models
+- `src/NT8.Core/Common/**` - Existing interfaces and base models
+- `src/NT8.Core/Risk/**` - Risk management system (completed)
+- `src/NT8.Core/Sizing/**` - Position sizing system (completed)
+- `src/NT8.Core/Logging/**` - Logging infrastructure
+
+### Build Configuration
+- `Directory.Build.props` - Global build properties
+- `*.csproj` files - Project files (unless adding new files to OMS project)
+- `.gitignore`
+
+### Documentation (Read-Only)
+- `nt8_phasing_plan.md`
+- `nt8_dev_spec.md`
+- `NT8_Integration_Guidelines_for_AI_Agents.md`
+- `AI_Agent_Workflow_and_Code_Templates.md`
+
+### NT8 Adapters
+- `src/NT8.Adapters/**` - NT8 integration (future phase)
+
+## New File Creation Rules
+
+### When creating new files:
+1. Use proper namespace: `NT8.Core.OMS` for implementation, `NT8.Core.Tests.OMS` for tests
+2. Include XML documentation on all public members
+3. Follow existing file naming patterns (PascalCase, descriptive names)
+4. Add to appropriate project file if needed
+
+### File naming examples:
+✅ `BasicOrderManager.cs` - Implementation class
+✅ `OrderModels.cs` - Model classes
+✅ `IOrderManager.cs` - Interface
+✅ `BasicOrderManagerTests.cs` - Test class
+✅ `MockNT8OrderAdapter.cs` - Mock for testing
+
+## Verification
+Before any file operation, ask yourself:
+1. Is this file in an allowed directory?
+2. Am I modifying an existing Core interface? (FORBIDDEN)
+3. Am I creating a new file in the correct location?
+
+If unsure, DO NOT proceed - ask for clarification first.