Initial commit: AutoBlogger v0.1.0

WordPress plugin that auto-researches topics from Reddit, generates
SEO-optimized articles via OpenRouter LLMs, runs them through a chief
editor agent, and publishes on a daily schedule.

Includes:
- Full generation pipeline (collect → analyze → score → generate → review → publish)
- Cost tracking and budget enforcement
- Admin UI: settings, review queue, metrics, activity log
- CI/CD pipeline (GitHub Actions → WordPress REST deploy)
- Unit test suite (PHPUnit + Brain Monkey)
- Structured logging with configurable verbosity

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

includes/admin/class-metrics-page.php

@@ -0,0 +1,46 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * Admin page displaying cost dashboard, content scores, and generation history.
+ *
+ * Shows: monthly spend, daily cost chart, spend by pipeline stage, budget
+ * utilization, top/bottom performing posts, and recent generation logs.
+ *
+ * Triggered by: Autoblogger::register_admin_hooks() on `admin_menu`.
+ * Dependencies: Autoblogger_Cost_Tracker.
+ *
+ * @see class-autoblogger.php       — Registers the hook.
+ * @see core/class-cost-tracker.php  — Provides cost data.
+ */
+class Autoblogger_Metrics_Page {
+
+	/**
+	 * Register the metrics submenu page under AutoBlogger.
+	 *
+	 * @return void
+	 */
+	public function on_register_menu(): void {
+		add_submenu_page(
+			'autoblogger-settings',
+			__( 'Metrics & Costs', 'autoblogger' ),
+			__( 'Metrics & Costs', 'autoblogger' ),
+			'manage_options',
+			'autoblogger-metrics',
+			[ $this, 'render_page' ]
+		);
+	}
+
+	/**
+	 * Render the metrics page.
+	 *
+	 * @return void
+	 */
+	public function render_page(): void {
+		if ( ! current_user_can( 'manage_options' ) ) {
+			return;
+		}
+
+		include AUTOBLOGGER_PLUGIN_DIR . 'templates/admin/metrics-page.php';
+	}
+}