refactor: complete action testing system overhaul

- Removed /scratch directory, now cloning pullfrogai/scratch as needed
- Implemented new play.ts testing system with local and Docker/act modes
- Added environment variable propagation to cloned test repositories
- Created minimal .act-dist approach to avoid pnpm symlink issues with Docker
- Migrated from dist/index.js to entry.cjs bundled output
- Added TypeScript fixture support with MainParams type safety
- Organized all test fixtures in fixtures/ directory
- Updated publish workflow to trigger on package.json changes
- Removed unnecessary INPUT_ANTHROPIC_API_KEY references
- Added comprehensive documentation for new testing system
- Fixed pre-commit hook to use entry.cjs instead of dist/

entry.ts

@@ -0,0 +1,55 @@
+#!/usr/bin/env node
+
+/**
+ * Entry point for GitHub Action
+ * This file is bundled to entry.cjs and called directly by GitHub Actions
+ */
+
+import * as core from "@actions/core";
+import { main } from "./main";
+
+async function run(): Promise<void> {
+  try {
+    // Get inputs from GitHub Actions
+    const prompt = core.getInput("prompt", { required: true });
+    const anthropicApiKey = core.getInput("anthropic_api_key", {
+      required: true,
+    });
+
+    if (!anthropicApiKey) {
+      throw new Error("anthropic_api_key is required");
+    }
+
+    if (!prompt) {
+      throw new Error("prompt is required");
+    }
+
+    // Create params object
+    const params = {
+      prompt,
+      anthropicApiKey,
+    };
+
+    // Run the main function
+    const result = await main(params);
+
+    // Set outputs
+    core.setOutput("status", result.success ? "success" : "failed");
+    core.setOutput("prompt", prompt);
+    core.setOutput("output", result.output || "");
+
+    if (!result.success) {
+      throw new Error(result.error || "Agent execution failed");
+    }
+  } catch (error) {
+    const errorMessage =
+      error instanceof Error ? error.message : "Unknown error occurred";
+    core.setFailed(`Action failed: ${errorMessage}`);
+  }
+}
+
+// Run the action
+run().catch((error) => {
+  console.error("Action failed:", error);
+  process.exit(1);
+});