feat(ipuaro): add edit tools (v0.6.0)

Add file editing capabilities:
- EditLinesTool: replace lines with hash conflict detection
- CreateFileTool: create files with directory auto-creation
- DeleteFileTool: delete files from filesystem and storage

Total: 664 tests, 97.77% coverage

packages/ipuaro/src/infrastructure/tools/edit/CreateFileTool.ts

@@ -0,0 +1,140 @@
+import { promises as fs } from "node:fs"
+import * as path from "node:path"
+import type { ITool, ToolContext, ToolParameterSchema } from "../../../domain/services/ITool.js"
+import { createFileData } from "../../../domain/value-objects/FileData.js"
+import {
+    createErrorResult,
+    createSuccessResult,
+    type ToolResult,
+} from "../../../domain/value-objects/ToolResult.js"
+import { hashLines } from "../../../shared/utils/hash.js"
+
+/**
+ * Result data from create_file tool.
+ */
+export interface CreateFileResult {
+    path: string
+    lines: number
+    size: number
+}
+
+/**
+ * Tool for creating new files.
+ * Creates a new file with the specified content.
+ * Requires user confirmation before creating.
+ */
+export class CreateFileTool implements ITool {
+    readonly name = "create_file"
+    readonly description =
+        "Create a new file with the specified content. " +
+        "The file path must be within the project root. " +
+        "Requires confirmation before creating."
+    readonly parameters: ToolParameterSchema[] = [
+        {
+            name: "path",
+            type: "string",
+            description: "File path relative to project root",
+            required: true,
+        },
+        {
+            name: "content",
+            type: "string",
+            description: "File content",
+            required: true,
+        },
+    ]
+    readonly requiresConfirmation = true
+    readonly category = "edit" as const
+
+    validateParams(params: Record<string, unknown>): string | null {
+        if (typeof params.path !== "string" || params.path.trim() === "") {
+            return "Parameter 'path' is required and must be a non-empty string"
+        }
+
+        if (typeof params.content !== "string") {
+            return "Parameter 'content' is required and must be a string"
+        }
+
+        return null
+    }
+
+    async execute(params: Record<string, unknown>, ctx: ToolContext): Promise<ToolResult> {
+        const startTime = Date.now()
+        const callId = `${this.name}-${String(startTime)}`
+
+        const relativePath = params.path as string
+        const content = params.content as string
+
+        const absolutePath = path.resolve(ctx.projectRoot, relativePath)
+
+        if (!absolutePath.startsWith(ctx.projectRoot)) {
+            return createErrorResult(
+                callId,
+                "Path must be within project root",
+                Date.now() - startTime,
+            )
+        }
+
+        try {
+            const exists = await this.fileExists(absolutePath)
+            if (exists) {
+                return createErrorResult(
+                    callId,
+                    `File already exists: ${relativePath}`,
+                    Date.now() - startTime,
+                )
+            }
+
+            const lines = content.split("\n")
+
+            const confirmed = await ctx.requestConfirmation(
+                `Create new file: ${relativePath} (${String(lines.length)} lines)`,
+                {
+                    filePath: relativePath,
+                    oldLines: [],
+                    newLines: lines,
+                    startLine: 1,
+                },
+            )
+
+            if (!confirmed) {
+                return createErrorResult(
+                    callId,
+                    "File creation cancelled by user",
+                    Date.now() - startTime,
+                )
+            }
+
+            const dirPath = path.dirname(absolutePath)
+            await fs.mkdir(dirPath, { recursive: true })
+            await fs.writeFile(absolutePath, content, "utf-8")
+
+            const stats = await fs.stat(absolutePath)
+            const fileData = createFileData(lines, hashLines(lines), stats.size, stats.mtimeMs)
+            await ctx.storage.setFile(relativePath, fileData)
+
+            const result: CreateFileResult = {
+                path: relativePath,
+                lines: lines.length,
+                size: stats.size,
+            }
+
+            return createSuccessResult(callId, result, Date.now() - startTime)
+        } catch (error) {
+            const message = error instanceof Error ? error.message : String(error)
+            return createErrorResult(callId, message, Date.now() - startTime)
+        }
+    }
+
+    /**
+     * Check if file exists.
+     */
+    private async fileExists(filePath: string): Promise<boolean> {
+        try {
+            await fs.access(filePath)
+            return true
+        } catch {
+            return false
+        }
+    }
+}