refactor: sort interface/type properties alphabetically

Sort properties alphabetically in type/interface definitions for consistency:

**src/git.ts - GitDiffOptions:**
- absolute, asSet, cache, cwd, porcelain, [key: string]: unknown

**src/spawn.ts - PromiseSpawnOptions:**
- cwd, env, gid, shell, signal, stdio, stdioString, timeout, uid

**src/ipc.ts - IpcStub:**
- data, pid, timestamp

**src/ipc.ts - IpcOptions:**
- encoding, timeout

No functional changes, just organizational improvement.

Author: jdalton

src/git.ts

@@ -33,6 +33,12 @@ export interface GitDiffOptions {
    * @default false
    */
   absolute?: boolean | undefined
+  /**
+   * Return results as a `Set` instead of an array.
+   *
+   * @default false
+   */
+  asSet?: boolean | undefined
   /**
    * Cache git diff results to avoid repeated git subprocess calls.
    *
@@ -61,12 +67,6 @@ export interface GitDiffOptions {
    * @default false
    */
   porcelain?: boolean | undefined
-  /**
-   * Return results as a `Set` instead of an array.
-   *
-   * @default false
-   */
-  asSet?: boolean | undefined
   /**
    * Additional options passed to glob matcher.
    *

src/ipc.ts

@@ -138,22 +138,22 @@ export interface IpcHandshake
  * Represents the structure of stub files used for filesystem-based IPC.
  */
 export interface IpcStub {
+  /** The actual data payload. */
+  data: unknown
   /** Process ID that created the stub. */
   pid: number
   /** Creation timestamp for age validation. */
   timestamp: number
-  /** The actual data payload. */
-  data: unknown
 }
 
 /**
  * Options for IPC communication
  */
 export interface IpcOptions {
-  /** Timeout in milliseconds for async operations. */
-  timeout?: number
   /** Text encoding for message serialization. */
   encoding?: BufferEncoding
+  /** Timeout in milliseconds for async operations. */
+  timeout?: number
 }
 
 /**

src/spawn.ts

@@ -81,14 +81,14 @@ function getChildProcess() {
  */
 export type PromiseSpawnOptions = {
   cwd?: string | undefined
-  stdioString?: boolean | undefined
-  stdio?: StdioType | undefined
   env?: NodeJS.ProcessEnv | undefined
+  gid?: number | undefined
   shell?: boolean | string | undefined
   signal?: AbortSignal | undefined
+  stdio?: StdioType | undefined
+  stdioString?: boolean | undefined
   timeout?: number | undefined
   uid?: number | undefined
-  gid?: number | undefined
 }
 
 /**