refactor: replace magic number with GITHUB_ACTIONS_BOT_ID constant

- Create new constants file at src/github/constants.ts with GITHUB_ACTIONS_BOT_ID and GITHUB_ACTIONS_BOT_LOGIN
- Replace all occurrences of magic number 41898282 with the constant
- Update imports across source and test files to use the new constants
- Add comment in action.yml referencing the constants file for the default bot_id value

This improves code maintainability by centralizing the GitHub Actions bot ID definition.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

action.yml

@@ -76,7 +76,7 @@ inputs:
   bot_id:
     description: "GitHub user ID to use for git operations when authenticated user cannot be fetched (defaults to github-actions[bot] ID)"
     required: false
-    default: "41898282"
+    default: "41898282" # github-actions[bot] ID - see src/github/constants.ts
   track_progress:
     description: "Force tag mode with tracking comments for pull_request and issue events. Only applicable to pull_request (opened, synchronize, ready_for_review, reopened) and issue (opened, edited, labeled, assigned) events."
     required: false

src/github/constants.ts

@@ -0,0 +1,14 @@
+/**
+ * GitHub-related constants used throughout the application
+ */
+
+/**
+ * GitHub Actions bot user ID
+ * This is the official ID for github-actions[bot] used in GitHub repositories
+ */
+export const GITHUB_ACTIONS_BOT_ID = 41898282;
+
+/**
+ * GitHub Actions bot username
+ */
+export const GITHUB_ACTIONS_BOT_LOGIN = "github-actions[bot]";

src/github/context.ts

@@ -8,6 +8,7 @@ import type {
   PullRequestReviewCommentEvent,
   WorkflowRunEvent,
 } from "@octokit/webhooks-types";
+import { GITHUB_ACTIONS_BOT_ID } from "./constants";
 // Custom types for GitHub Actions events that aren't webhooks
 export type WorkflowDispatchEvent = {
   action?: never;
@@ -123,7 +124,7 @@ export function parseGitHubContext(): GitHubContext {
       branchPrefix: process.env.BRANCH_PREFIX ?? "claude/",
       useStickyComment: process.env.USE_STICKY_COMMENT === "true",
       useCommitSigning: process.env.USE_COMMIT_SIGNING === "true",
-      botId: process.env.BOT_ID ?? "41898282",
+      botId: process.env.BOT_ID ?? String(GITHUB_ACTIONS_BOT_ID),
       allowedBots: process.env.ALLOWED_BOTS ?? "",
       trackProgress: process.env.TRACK_PROGRESS === "true",
     },

src/github/operations/git-config.ts

@@ -8,6 +8,7 @@
 import { $ } from "bun";
 import type { GitHubContext } from "../context";
 import { GITHUB_SERVER_URL } from "../api/config";
+import { GITHUB_ACTIONS_BOT_ID, GITHUB_ACTIONS_BOT_LOGIN } from "../constants";
 
 type GitUser = {
   login: string;
@@ -39,8 +40,8 @@ export async function configureGitAuth(
     console.log(`✓ Set git user as ${botName}`);
   } else {
     console.log("No user data in comment, using default bot user");
-    await $`git config user.name "github-actions[bot]"`;
+    await $`git config user.name "${GITHUB_ACTIONS_BOT_LOGIN}"`;
-    await $`git config user.email "41898282+github-actions[bot]@${noreplyDomain}"`;
+    await $`git config user.email "${GITHUB_ACTIONS_BOT_ID}+${GITHUB_ACTIONS_BOT_LOGIN}@${noreplyDomain}"`;
   }
 
   // Remove the authorization header that actions/checkout sets

src/modes/agent/index.ts

@@ -7,6 +7,7 @@ import { parseAllowedTools } from "./parse-tools";
 import { configureGitAuth } from "../../github/operations/git-config";
 import type { GitHubContext } from "../../github/context";
 import { isEntityContext } from "../../github/context";
+import { GITHUB_ACTIONS_BOT_ID } from "../../github/constants";
 
 /**
  * Extract GitHub context as environment variables for agent mode
@@ -88,7 +89,7 @@ export const agentMode: Mode = {
 
       // Check if bot_id is provided
       const botId = context.inputs.botId;
-      if (botId && botId !== "41898282") {
+      if (botId && botId !== String(GITHUB_ACTIONS_BOT_ID)) {
         // Use custom bot_id - try to fetch user info
         try {
           const { data: userData } = await octokit.rest.users.getByUsername({

test/install-mcp-server.test.ts

@@ -2,6 +2,7 @@ import { describe, test, expect, beforeEach, afterEach, spyOn } from "bun:test";
 import { prepareMcpConfig } from "../src/mcp/install-mcp-server";
 import * as core from "@actions/core";
 import type { ParsedGitHubContext } from "../src/github/context";
+import { GITHUB_ACTIONS_BOT_ID } from "../src/github/constants";
 
 describe("prepareMcpConfig", () => {
   let consoleInfoSpy: any;
@@ -31,7 +32,7 @@ describe("prepareMcpConfig", () => {
       branchPrefix: "",
       useStickyComment: false,
       useCommitSigning: false,
-      botId: "41898282",
+      botId: String(GITHUB_ACTIONS_BOT_ID),
       allowedBots: "",
       trackProgress: false,
     },

test/mockContext.ts

@@ -9,6 +9,7 @@ import type {
   PullRequestReviewEvent,
   PullRequestReviewCommentEvent,
 } from "@octokit/webhooks-types";
+import { GITHUB_ACTIONS_BOT_ID } from "../src/github/constants";
 
 const defaultInputs = {
   prompt: "",
@@ -18,7 +19,7 @@ const defaultInputs = {
   branchPrefix: "claude/",
   useStickyComment: false,
   useCommitSigning: false,
-  botId: "41898282",
+  botId: String(GITHUB_ACTIONS_BOT_ID),
   allowedBots: "",
   trackProgress: false,
 };

test/permissions.test.ts

@@ -2,6 +2,7 @@ import { describe, expect, test, spyOn, beforeEach, afterEach } from "bun:test";
 import * as core from "@actions/core";
 import { checkWritePermissions } from "../src/github/validation/permissions";
 import type { ParsedGitHubContext } from "../src/github/context";
+import { GITHUB_ACTIONS_BOT_ID } from "../src/github/constants";
 
 describe("checkWritePermissions", () => {
   let coreInfoSpy: any;
@@ -67,7 +68,7 @@ describe("checkWritePermissions", () => {
       branchPrefix: "claude/",
       useStickyComment: false,
       useCommitSigning: false,
-      botId: "41898282",
+      botId: String(GITHUB_ACTIONS_BOT_ID),
       allowedBots: "",
       trackProgress: false,
     },