add schedule & workflow dispatch paths. Also make prepare logic conditional (#353)

* feat: add agent mode for automation scenarios

- Add agent mode that always triggers without checking for mentions
- Implement Mode interface with support for mode-specific tool configuration
- Add getAllowedTools() and getDisallowedTools() methods to Mode interface
- Simplify tests by combining related test cases
- Update documentation and examples to include agent mode
- Fix TypeScript imports to prevent circular dependencies

Agent mode is designed for automation and workflow_dispatch scenarios
where Claude should always run without requiring trigger phrases.

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

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

* Minor update to readme (from @main to @beta)

* Since workflow_dispatch isn't in the base action, update the examples accordingly

* minor formatting issue

* Update to say beta instead of main

* Fix missed tracking comment to be false

* add schedule & workflow dispatch paths. Also make prepare logic conditional

* tests

* Add test workflow for workflow_dispatch functionality

* Update workflow to use correct branch reference

* remove test workflow dispatch file

* minor lint update

* update workflow dispatch agent example

* minor lint update

* refactor: simplify prepare logic with mode-specific implementations

* ensure tag mode can't work with workflow dispatch and schedule tasks

* simplify: remove workflow_dispatch/schedule from create-prompt

- Remove workflow_dispatch and schedule event handling from create-prompt
  since agent mode doesn't use the standard prompt generation flow
- Enforce mode compatibility at selection time in the registry instead
  of runtime validation in tag mode
- Add explanatory comment in agent mode about why prompt file is needed
- Update tests to reflect simplified event handling

This reduces code duplication and makes the separation between tag mode
(entity-based events) and agent mode (automation events) clearer.

* simplify PR by making agent mode only work with workflow dispatch and schedule events

* remove unnecessary changes

* remove unnecessary changes from PR

- Revert update-comment-link.ts changes (agent mode doesn't use this)
- Revert create-initial.ts changes (agent mode doesn't create comments)
- Remove unused default-branch.ts file
- Revert install-mcp-server.ts changes (agent mode uses minimal MCP)

These files are only used by tag mode for entity-based events, not needed
for workflow_dispatch/schedule support via agent mode.

* fix: handle optional entityNumber for TypeScript

- Add runtime checks in files that require entityNumber
- These files are only used by tag mode which always has entityNumber
- Agent mode (workflow_dispatch/schedule) doesn't use these files

* linting update

---------

Co-authored-by: km-anthropic <km-anthropic@users.noreply.github.com>
Co-authored-by: Claude <noreply@anthropic.com>

src/prepare/index.ts

@@ -0,0 +1,20 @@
+/**
+ * Main prepare module that delegates to the mode's prepare method
+ */
+
+import type { PrepareOptions, PrepareResult } from "./types";
+
+export async function prepare(options: PrepareOptions): Promise<PrepareResult> {
+  const { mode, context, octokit, githubToken } = options;
+
+  console.log(
+    `Preparing with mode: ${mode.name} for event: ${context.eventName}`,
+  );
+
+  // Delegate to the mode's prepare method
+  return mode.prepare({
+    context,
+    octokit,
+    githubToken,
+  });
+}

src/prepare/types.ts

@@ -0,0 +1,20 @@
+import type { ParsedGitHubContext } from "../github/context";
+import type { Octokits } from "../github/api/client";
+import type { Mode } from "../modes/types";
+
+export type PrepareResult = {
+  commentId?: number;
+  branchInfo: {
+    baseBranch: string;
+    claudeBranch?: string;
+    currentBranch: string;
+  };
+  mcpConfig: string;
+};
+
+export type PrepareOptions = {
+  context: ParsedGitHubContext;
+  octokit: Octokits;
+  mode: Mode;
+  githubToken: string;
+};