feat(ipuaro): add PathValidator security utility (v0.13.0)

Add centralized path validation to prevent path traversal attacks.

- PathValidator class with sync/async validation methods
- Protects against '..' and '~' traversal patterns
- Validates paths are within project root
- Refactored all 7 file tools to use PathValidator
- 51 new tests for PathValidator

packages/ipuaro/tests/unit/infrastructure/tools/read/GetClassTool.test.ts

@@ -271,7 +271,7 @@ describe("GetClassTool", () => {
             const result = await tool.execute({ path: "../outside/file.ts", name: "MyClass" }, ctx)
 
             expect(result.success).toBe(false)
-            expect(result.error).toBe("Path must be within project root")
+            expect(result.error).toBe("Path contains traversal patterns")
         })
 
         it("should handle class with no extends", async () => {

packages/ipuaro/tests/unit/infrastructure/tools/read/GetFunctionTool.test.ts

@@ -229,7 +229,7 @@ describe("GetFunctionTool", () => {
             const result = await tool.execute({ path: "../outside/file.ts", name: "myFunc" }, ctx)
 
             expect(result.success).toBe(false)
-            expect(result.error).toBe("Path must be within project root")
+            expect(result.error).toBe("Path contains traversal patterns")
         })
 
         it("should pad line numbers correctly for large files", async () => {

packages/ipuaro/tests/unit/infrastructure/tools/read/GetLinesTool.test.ts

@@ -214,7 +214,7 @@ describe("GetLinesTool", () => {
             const result = await tool.execute({ path: "../outside/file.ts" }, ctx)
 
             expect(result.success).toBe(false)
-            expect(result.error).toBe("Path must be within project root")
+            expect(result.error).toBe("Path contains traversal patterns")
         })
 
         it("should return error when file not found", async () => {

packages/ipuaro/tests/unit/infrastructure/tools/read/GetStructureTool.test.ts

@@ -228,7 +228,7 @@ describe("GetStructureTool", () => {
             const result = await tool.execute({ path: "../outside" }, ctx)
 
             expect(result.success).toBe(false)
-            expect(result.error).toBe("Path must be within project root")
+            expect(result.error).toBe("Path contains traversal patterns")
         })
 
         it("should return error for non-directory path", async () => {