fix: add services/opik/ to autoloader — v0.12.3

class-autoloader.php listed services/ as a scan directory but not
services/opik/, where all four Opik classes live. Composer's classmap
covers includes/ recursively so PHPUnit passed; the WP runtime autoloader
fatals on first Opik class reference in production.

Root cause: the subdirectory was not added to the explicit $directories
array when the opik/ subdirectory was created in Wave 1.

Adds services/opik/ to the scan list. Bumps to v0.12.3.

CHANGELOG.md

@@ -5,6 +5,29 @@ All notable changes to PRAutoBlogger will be documented in this file.
 Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project uses [Semantic Versioning](https://semver.org/).
 
+## [0.12.3] — 2026-04-24
+
+### Fixed
+- **Opik autoloader gap** — `class-autoloader.php` listed `services/` as a scan directory but not `services/opik/`, where all four Opik classes live (`Opik_Client`, `Opik_Trace_Context`, `Opik_Span_Queue`, `Opik_Dispatcher`). Composer's classmap (used in PHPUnit) covers `includes/` recursively so tests passed, but the WordPress runtime autoloader would fatal on first Opik class reference in production. Added `services/opik/` to the scan list.
+
+
+## [0.12.2] — 2026-04-24
+
+### Fixed
+- **Image style suffix empty-string bypass** — `get_option()` for `prautoblogger_image_style_suffix` only returns the default constant when the key is absent from `wp_options`; an empty string stored in the DB returns `''`, bypassing fallback entirely. Root cause of post #675 rendering photorealistically instead of as a newspaper comic. Fixed all three call sites in `class-image-prompt-builder.php` (lines 85, 107, 272) by extracting a private helper `get_style_suffix()` that treats both absent AND empty string as "use default".
+
+- **Image cost logged under wrong run_id** — `class-image-pipeline.php` created a fresh cost tracker when invoked without an argument, so image costs were logged under a different `run_id` than the article's other stages. Cost breakdowns aggregating by `run_id` silently excluded the image line item. Fixed by threading the article worker's cost tracker through `PRAutoBlogger_Publisher` and `PRAutoBlogger_Post_Assembler::attach_generated_images()` to the image pipeline constructor. Image costs now share the same `run_id` as analysis, draft, review, and llm_research stages.
+
+
+## [0.12.1] — 2026-04-23
+
+### Fixed
+- **Opik UUID v7 bug** — `PRAutoBlogger_Opik_Trace_Context` was generating trace and
+  span IDs with `wp_generate_uuid4()` (UUID v4). Opik's REST API requires UUID v7 and
+  rejects v4 with HTTP 400 "Trace id must be a version 7 UUID". Added a private static
+  `generate_uuid7()` method using `microtime()` + `random_bytes()` and replaced both
+  call sites. All trace and span submissions now succeed.
+
 ## [0.12.0] — 2026-04-23
 
 ### Added

includes/class-autoloader.php

@@ -30,6 +30,7 @@ class PRAutoBlogger_Autoloader {
 		'models/',
 		'frontend/',
 		'services/',
+		'services/opik/',
 		'ajax/',
 	);
 

includes/core/class-article-worker.php

@@ -138,13 +138,13 @@ class PRAutoBlogger_Article_Worker {
 				: $content;
 
 			if ( $auto_publish ) {
-				$publisher->publish( $final, $idea, $review, $run_id );
+				$publisher->publish( $final, $idea, $review, $run_id, $this->cost_tracker );
 				++$result['published'];
 			} else {
-				$publisher->save_as_draft( $final, $idea, $review, $run_id );
+				$publisher->save_as_draft( $final, $idea, $review, $run_id, $this->cost_tracker );
 			}
 		} else {
-			$publisher->save_as_draft( $content, $idea, $review, $run_id );
+			$publisher->save_as_draft( $content, $idea, $review, $run_id, $this->cost_tracker );
 			++$result['rejected'];
 			PRAutoBlogger_Logger::instance()->info(
 				'Article rejected by editor: ' . $idea->get_topic(),

includes/core/class-image-prompt-builder.php

@@ -82,7 +82,7 @@ PROMPT;
 
 		$parsed = $this->rewrite_via_llm( $title, $first_para );
 
-		$style_suffix = get_option( 'prautoblogger_image_style_suffix', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX );
+		$style_suffix = $this->get_style_suffix();
 
 		return array(
 			'prompt'  => trim( $parsed['scene'] . ' ' . $style_suffix ),
@@ -104,7 +104,7 @@ PROMPT;
 
 		$parsed = $this->rewrite_via_llm( $title, $context );
 
-		$style_suffix = get_option( 'prautoblogger_image_style_suffix', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX );
+		$style_suffix = $this->get_style_suffix();
 
 		return array(
 			'prompt'  => trim( $parsed['scene'] . ' ' . $style_suffix ),
@@ -269,7 +269,7 @@ PROMPT;
 	 */
 	public function build_fallback_prompt( string $title ): array {
 		$parsed       = $this->synthesize_visual_concepts_fallback( $title, '' );
-		$style_suffix = get_option( 'prautoblogger_image_style_suffix', PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX );
+		$style_suffix = $this->get_style_suffix();
 		return array(
 			'prompt'  => trim( $parsed['scene'] . ' ' . $style_suffix ),
 			'caption' => $parsed['caption'],
@@ -311,4 +311,20 @@ PROMPT;
 		$override = (string) get_option( 'prautoblogger_image_prompt_instructions', '' );
 		return '' !== trim( $override ) ? $override : self::REWRITER_SYSTEM_PROMPT;
 	}
+
+	/**
+	 * Get image style suffix with empty-string safeguard.
+	 *
+	 * Treats both absent and empty string as "use default" to prevent
+	 * silent style loss if the admin settings field is saved empty.
+	 *
+	 * @return string The style suffix with safe fallback.
+	 */
+	private function get_style_suffix(): string {
+		$style_suffix = (string) get_option( 'prautoblogger_image_style_suffix', '' );
+		if ( '' === trim( $style_suffix ) ) {
+			$style_suffix = PRAUTOBLOGGER_DEFAULT_IMAGE_STYLE_SUFFIX;
+		}
+		return $style_suffix;
+	}
 }

includes/core/class-post-assembler.php

@@ -235,8 +235,9 @@ class PRAutoBlogger_Post_Assembler {
 	 * @param int                        $post_id      Post ID.
 	 * @param PRAutoBlogger_Article_Idea $idea         Article idea (contains source IDs).
 	 * @param array                      $post_data    Post data array (for article content).
+	 * @param ?PRAutoBlogger_Cost_Tracker $cost_tracker Optional cost tracker for image generation cost logging.
 	 */
-	public static function attach_generated_images( int $post_id, PRAutoBlogger_Article_Idea $idea, array $post_data ): void {
+	public static function attach_generated_images( int $post_id, PRAutoBlogger_Article_Idea $idea, array $post_data, ?PRAutoBlogger_Cost_Tracker $cost_tracker = null ): void {
 		// Fetch the original Reddit source data for Image B's source-driven prompt.
 		// The idea's source_ids point to rows in the source_data table collected
 		// during the pipeline's collection step.
@@ -247,7 +248,7 @@ class PRAutoBlogger_Post_Assembler {
 			// internally, immediately after each image generates. This
 			// ensures attachment persists even if the process times out
 			// before this method returns.
-			$result = ( new PRAutoBlogger_Image_Pipeline() )->generate_and_attach_images( $post_id, $post_data, $source_data );
+			$result = ( new PRAutoBlogger_Image_Pipeline( null, $cost_tracker ) )->generate_and_attach_images( $post_id, $post_data, $source_data );
 
 			if ( ! empty( $result['errors'] ) ) {
 				foreach ( $result['errors'] as $error ) {

includes/core/class-publisher.php

@@ -28,6 +28,7 @@ class PRAutoBlogger_Publisher {
 	 * @param PRAutoBlogger_Article_Idea      $idea    The original article idea.
 	 * @param PRAutoBlogger_Editorial_Review  $review  The editor's review.
 	 * @param string|null                   $run_id  Pipeline run ID for log linking.
+	 * @param ?PRAutoBlogger_Cost_Tracker $cost_tracker Optional cost tracker for image generation cost logging.
 	 * @return int The created post ID.
 	 * @throws \RuntimeException If post creation fails.
 	 */
@@ -35,9 +36,10 @@ class PRAutoBlogger_Publisher {
 		string $content,
 		PRAutoBlogger_Article_Idea $idea,
 		PRAutoBlogger_Editorial_Review $review,
-		?string $run_id = null
+		?string $run_id = null,
+		?PRAutoBlogger_Cost_Tracker $cost_tracker = null
 	): int {
-		return $this->create_post( $content, $idea, $review, 'publish', $run_id );
+		return $this->create_post( $content, $idea, $review, 'publish', $run_id, $cost_tracker );
 	}
 
 	/**
@@ -47,6 +49,7 @@ class PRAutoBlogger_Publisher {
 	 * @param PRAutoBlogger_Article_Idea      $idea    The original article idea.
 	 * @param PRAutoBlogger_Editorial_Review  $review  The editor's review with rejection notes.
 	 * @param string|null                   $run_id  Pipeline run ID for log linking.
+	 * @param ?PRAutoBlogger_Cost_Tracker $cost_tracker Optional cost tracker for image generation cost logging.
 	 * @return int The created post ID.
 	 * @throws \RuntimeException If post creation fails.
 	 */
@@ -54,9 +57,10 @@ class PRAutoBlogger_Publisher {
 		string $content,
 		PRAutoBlogger_Article_Idea $idea,
 		PRAutoBlogger_Editorial_Review $review,
-		?string $run_id = null
+		?string $run_id = null,
+		?PRAutoBlogger_Cost_Tracker $cost_tracker = null
 	): int {
-		return $this->create_post( $content, $idea, $review, 'draft', $run_id );
+		return $this->create_post( $content, $idea, $review, 'draft', $run_id, $cost_tracker );
 	}
 
 	/**
@@ -75,7 +79,8 @@ class PRAutoBlogger_Publisher {
 		PRAutoBlogger_Article_Idea $idea,
 		PRAutoBlogger_Editorial_Review $review,
 		string $post_status,
-		?string $run_id = null
+		?string $run_id = null,
+		?PRAutoBlogger_Cost_Tracker $cost_tracker = null
 	): int {
 		// Clean LLM artifacts, then inject peptide hyperlinks deterministically
 		// before the content enters WordPress. Peptide linker no-ops gracefully
@@ -106,7 +111,7 @@ class PRAutoBlogger_Publisher {
 		PRAutoBlogger_Post_Assembler::link_generation_logs( $post_id, $run_id );
 
 		if ( 'publish' === $post_status ) {
-			PRAutoBlogger_Post_Assembler::attach_generated_images( $post_id, $idea, $post_data );
+			PRAutoBlogger_Post_Assembler::attach_generated_images( $post_id, $idea, $post_data, $cost_tracker );
 		}
 
 		PRAutoBlogger_Logger::instance()->info(

includes/services/opik/class-opik-trace-context.php

@@ -57,7 +57,7 @@ class PRAutoBlogger_Opik_Trace_Context {
 	 * @return string The trace ID (UUID).
 	 */
 	public function init_trace(): string {
-		$this->trace_id    = wp_generate_uuid4();
+		$this->trace_id    = self::generate_uuid7();
 		$this->trace_start = microtime( true );
 		return $this->trace_id;
 	}
@@ -86,7 +86,7 @@ class PRAutoBlogger_Opik_Trace_Context {
 	 * @return string Generated span ID (UUID).
 	 */
 	public function start_span( array $span_data ): string {
-		$span_id = wp_generate_uuid4();
+		$span_id = self::generate_uuid7();
 
 		$span = array(
 			'id'             => $span_id,
@@ -193,4 +193,44 @@ class PRAutoBlogger_Opik_Trace_Context {
 	public static function teardown(): void {
 		self::$instance = null;
 	}
+
+	/**
+	 * Generate a UUID version 7 (time-ordered, random).
+	 *
+	 * Opik requires v7 UUIDs for trace and span IDs. WordPress only provides
+	 * wp_generate_uuid4() so we implement v7 here.
+	 *
+	 * UUID v7 structure (128 bits):
+	 *   - Bits  0-47 : Unix timestamp in milliseconds (big-endian)
+	 *   - Bits 48-51 : Version nibble (0x7)
+	 *   - Bits 52-63 : rand_a (12 random bits)
+	 *   - Bits 64-65 : Variant (0b10)
+	 *   - Bits 66-127: rand_b (62 random bits)
+	 *
+	 * @return string UUID v7 in standard 8-4-4-4-12 hex format.
+	 */
+	private static function generate_uuid7(): string {
+		$ms     = (int) ( microtime( true ) * 1000 );
+		$ts_hex = str_pad( dechex( $ms ), 12, '0', STR_PAD_LEFT ); // 48-bit ts -> 12 hex
+		$rand   = bin2hex( random_bytes( 10 ) );                    // 80 random bits -> 20 hex
+
+		// Group 3: version nibble '7' + 12 random bits (3 hex chars).
+		$g3 = '7' . substr( $rand, 0, 3 );
+
+		// Group 4: variant byte (top 2 bits = 10) + 2 random hex chars.
+		$var_byte = ( hexdec( substr( $rand, 4, 2 ) ) & 0x3f ) | 0x80;
+		$g4       = sprintf( '%02x', $var_byte ) . substr( $rand, 6, 2 );
+
+		// Group 5: 12 remaining random hex chars.
+		$g5 = substr( $rand, 8, 12 );
+
+		return sprintf(
+			'%s-%s-%s-%s-%s',
+			substr( $ts_hex, 0, 8 ), // time_high (32 bits)
+			substr( $ts_hex, 8, 4 ), // time_low  (16 bits)
+			$g3,
+			$g4,
+			$g5
+		);
+	}
 }

prautoblogger.php

@@ -9,7 +9,7 @@
  * Plugin Name:       PRAutoBlogger
  * Plugin URI:        https://peptiderepo.com/prautoblogger
  * Description:       Monitors social media for trending topics, generates SEO-friendly blog posts using AI, and publishes them on a daily schedule with full cost tracking and self-improvement metrics.
- * Version:           0.12.0
+ * Version:           0.12.3
  * Requires at least: 6.0
  * Requires PHP:      7.4
  * Author:            PeptideRepo
@@ -35,7 +35,7 @@ if ( ! defined( 'ABSPATH' ) ) {
 | Defined here so every file in the plugin can reference paths, versions,
 | and limits without magic strings.
 */
-define( 'PRAUTOBLOGGER_VERSION', '0.12.0' );
+define( 'PRAUTOBLOGGER_VERSION', '0.12.3' );
 define( 'PRAUTOBLOGGER_DB_VERSION', '1.1.0' );
 define( 'PRAUTOBLOGGER_PLUGIN_FILE', __FILE__ );
 define( 'PRAUTOBLOGGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );