feat(coding-agent): add pluggable operations for remote tool execution

Adds optional operations parameter to create*Tool functions enabling
delegation to remote systems (SSH, containers, etc.):

- ReadOperations: readFile, access, detectImageMimeType
- WriteOperations: writeFile, mkdir
- EditOperations: readFile, writeFile, access
- BashOperations: exec (with streaming, signal, timeout)

Add ssh.ts example demonstrating --ssh flag for remote execution.
Built-in renderers used automatically for overrides without custom renderers.

fixes #564

packages/coding-agent/src/index.ts

@@ -176,19 +176,31 @@ export {
 } from "./core/skills.js";
 // Tools
 export {
+	type BashOperations,
 	type BashToolDetails,
+	type BashToolOptions,
 	bashTool,
 	codingTools,
 	DEFAULT_MAX_BYTES,
 	DEFAULT_MAX_LINES,
+	type EditOperations,
+	type EditToolDetails,
+	type EditToolOptions,
 	editTool,
+	type FindOperations,
 	type FindToolDetails,
+	type FindToolOptions,
 	findTool,
 	formatSize,
+	type GrepOperations,
 	type GrepToolDetails,
+	type GrepToolOptions,
 	grepTool,
+	type LsOperations,
 	type LsToolDetails,
+	type LsToolOptions,
 	lsTool,
+	type ReadOperations,
 	type ReadToolDetails,
 	type ReadToolOptions,
 	readTool,
@@ -198,6 +210,8 @@ export {
 	truncateHead,
 	truncateLine,
 	truncateTail,
+	type WriteOperations,
+	type WriteToolOptions,
 	writeTool,
 } from "./core/tools/index.js";
 // Main entry point