添加Pdf读取mcp

pdf-reader-mcp/docs/principles.md

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+# Development Principles
+
+This project adheres to the following core principles, based on the provided TypeScript Project Development Guidelines:
+
+## 1. Impact-Driven
+
+The primary goal is to solve the real problem of AI agents needing access to PDF content securely and efficiently. Features are added to serve this core purpose.
+
+## 2. Simplicity & Minimalism
+
+We aim for the most direct approach:
+
+- A single, consolidated `read_pdf` tool instead of multiple specific tools.
+- Leveraging the robust `pdfjs-dist` library for core parsing.
+- Avoiding unnecessary abstractions.
+
+## 3. Functional Programming Style (Influences)
+
+While not strictly functional, the code emphasizes:
+
+- Pure helper functions where possible (like path resolution checks).
+- Minimizing side effects within core logic (parsing doesn't alter files).
+- Using standard asynchronous patterns (`async/await`) effectively.
+
+## 4. Minimal Dependencies
+
+- Core functionality relies on `@modelcontextprotocol/sdk` and `pdfjs-dist`.
+- Development dependencies are standard tools (TypeScript, ESLint, Prettier, Vitest).
+- Dependencies like `glob`, `zod`, `zod-to-json-schema` provide essential validation and utility.
+- Unused dependencies inherited from the template (`diff`, `detect-indent`) have been removed.
+
+## 5. Code Quality & Consistency
+
+- **Strict TypeScript:** Using the strictest compiler options (`strict: true`, etc.).
+- **Rigorous Linting:** Employing ESLint with recommended and strict type-checked rules.
+- **Consistent Formatting:** Enforced by Prettier.
+- **Comprehensive Testing:** Aiming for high test coverage (currently ~95%) using Vitest, with a 100% threshold configured.
+
+## 6. Security Focus
+
+- Path traversal prevention is critical. All file paths are resolved relative to the project root and validated.
+
+## 7. No Sponsorship
+
+This project does not accept financial contributions, and all related information has been removed.