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feat: add LLM cost tracking with budget enforcement and admin dashboard

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- New Cost_Tracker class: logs every API call (model, tokens, cost), enforces
  monthly budgets with hard-stop mode, provides aggregated reporting
- New llm_costs database table with indexes on created_at, model, operation
- Modified LLM class: call_openrouter_with_usage() extracts token usage from
  OpenRouter responses; budget gate checks before each API call
- Admin settings: monthly budget (USD), enforcement mode (disabled/warn/hard-stop),
  cost log retention period
- Admin cost dashboard: budget progress bar, daily cost chart (Chart.js),
  per-model and per-operation breakdowns, recent API call log
- PHPUnit tests: 16 tests covering cost calculation, pricing lookups,
  budget enforcement logic, and model validation
- Updated ARCHITECTURE.md with new table schema, data flow, and key decisions
- Updated CONVENTIONS.md with "how to add cost tracking for a new operation"
- Version bump to 2.4.0

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Terence
2026-04-13 04:18:30 +07:00
parent 6796121003
commit b7da4f42b9
47 changed files with 2192 additions and 164 deletions
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22
includes/class-peptide-news.php Normal file → Executable file
View File

@@ -1,4 +1,5 @@
<?php
declare( strict_types=1 );
/**
* The core plugin class.
*
@@ -31,16 +32,18 @@ class Peptide_News {
/**
* Load all required files.
*/
private function load_dependencies() {
private function load_dependencies(): void {
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-loader.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-activator.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-deactivator.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-encryption.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-fetcher.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-analytics.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-rest-api.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-llm.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-logger.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-content-filter.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'includes/class-peptide-news-cost-tracker.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'admin/class-peptide-news-admin.php';
require_once PEPTIDE_NEWS_PLUGIN_DIR . 'public/class-peptide-news-public.php';
@@ -50,7 +53,7 @@ class Peptide_News {
/**
* Register admin-side hooks.
*/
private function define_admin_hooks() {
private function define_admin_hooks(): void {
$admin = new Peptide_News_Admin( $this->plugin_name, $this->version );
$this->loader->add_action( 'admin_enqueue_scripts', $admin, 'enqueue_styles' );
@@ -62,7 +65,7 @@ class Peptide_News {
/**
* Register public-facing hooks.
*/
private function define_public_hooks() {
private function define_public_hooks(): void {
$public = new Peptide_News_Public( $this->plugin_name, $this->version );
$this->loader->add_action( 'wp_enqueue_scripts', $public, 'enqueue_styles' );
@@ -76,7 +79,7 @@ class Peptide_News {
/**
* Register WP-Cron hooks for scheduled fetching.
*/
private function define_cron_hooks() {
private function define_cron_hooks(): void {
$fetcher = new Peptide_News_Fetcher();
$this->loader->add_action( 'peptide_news_cron_fetch', $fetcher, 'fetch_all_sources' );
@@ -86,12 +89,13 @@ class Peptide_News {
$this->loader->add_action( 'wp_ajax_peptide_news_get_logs', 'Peptide_News_Logger', 'ajax_get_logs' );
$this->loader->add_action( 'wp_ajax_peptide_news_clear_logs', 'Peptide_News_Logger', 'ajax_clear_logs' );
$this->loader->add_action( 'wp_ajax_peptide_news_delete_articles', 'Peptide_News_Rest_API', 'ajax_delete_articles' );
$this->loader->add_action( 'wp_ajax_peptide_news_get_cost_data', 'Peptide_News_Cost_Tracker', 'ajax_get_cost_data' );
}
/**
* Register REST API hooks.
*/
private function define_rest_hooks() {
private function define_rest_hooks(): void {
$rest = new Peptide_News_Rest_API();
$this->loader->add_action( 'rest_api_init', $rest, 'register_routes' );
@@ -100,19 +104,19 @@ class Peptide_News {
/**
* Run the loader to execute all registered hooks.
*/
public function run() {
public function run(): void {
$this->loader->run();
}
public function get_plugin_name() {
public function get_plugin_name(): string {
return $this->plugin_name;
}
public function get_version() {
public function get_version(): string {
return $this->version;
}
public function get_loader() {
public function get_loader(): Peptide_News_Loader {
return $this->loader;
}
}