fix: address QA failures in PR #134 — AJAX nesting, hook typo, test coverage

- Fix: Nested AJAX handler method (on_ajax_sync_runware_models_now) moved to proper class scope in class-ajax-handlers.php
- Fix: Removed stray 't' character before add_action hook registration in class-prautoblogger.php line 184
- Test: Added happy-path unit test for successful Runware model catalog sync in RunwareModelCatalogTest.php
- All files pass PHP lint validation

ARCHITECTURE.md

@@ -476,7 +476,7 @@ Stored on every PRAutoBlogger-generated post:
 | Reddit RSS | Primary Reddit data source — Atom feeds for subreddit hot posts | None (unauthenticated) | No known rate limit; reliable from datacenter IPs | `providers/class-reddit-json-client.php` |
 | Reddit .json | Fallback for posts + only source for comments | None (unauthenticated) | ~10 req/min (datacenter IPs often blocked) | `providers/class-reddit-json-client.php` |
 | Google Analytics 4 | Post performance metrics | OAuth2 service account | Standard GA4 limits | `core/class-ga4-client.php`, `core/class-metrics-collector.php` |
-| Runware (FLUX.1 via runware.ai) | **Default** image backend (v0.9.0+): schnell ~$0.0006/image, dev ~$0.02/image. True parallel generation via curl_multi. | API key (encrypted in wp_options) | Account-level quotas | `providers/class-runware-image-provider.php`, `providers/class-runware-image-pricing.php`, `providers/class-runware-image-support.php`, `providers/class-runware-image-batch.php` |
+| Runware (FLUX.1 via runware.ai) | **Default** image backend (v0.9.0+): schnell ~$0.0006/image, dev ~$0.02/image. True parallel generation via curl_multi. **v0.15.0: live model catalog sync** from `/v1/models` endpoint (task-based API); normalized to Image_Model_Registry shape; cached with 24h TTL; on-demand refresh via AJAX. | API key (encrypted in wp_options) | Account-level quotas | `providers/class-runware-image-provider.php`, `providers/class-runware-image-pricing.php`, `providers/class-runware-image-support.php`, `providers/class-runware-image-batch.php`, `providers/class-runware-model-catalog.php` |
 
 ---
 

CHANGELOG.md

@@ -1,5 +1,84 @@
 # Changelog
 
+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/).
+
+## [0.14.0] - 2026-04-26
+## [0.15.0] - 2026-04-26
+
+### Added
+- **Live Runware Model Catalog Sync**: New `class-runware-model-catalog.php`
+  fetches the live Runware model list via their `/v1` endpoint (task-based API),
+  filters to `taskType=imageInference` (text-to-image only, excluding inpainting),
+  normalizes to the Image_Model_Registry shape, and caches in `prautoblogger_runware_model_cache`
+  with a 24-hour TTL. Fixes the pattern from v0.13.8 and v0.14.0 where the
+  hardcoded Runware model list was a maintenance burden and gaps (missing models,
+  wrong prices) went unnoticed until customer images generation broke.
+- Daily WP-Cron sync (`prautoblogger_sync_runware_models`) scheduled on activation
+  and unscheduled on deactivation.
+- On-demand "Sync now" AJAX button in PRAdmin (Images settings section) with
+  nonce protection and `manage_options` cap check. Refreshes model count and
+  last-synced timestamp in the UI without full page reload.
+- Smart caching + fallback strategy: if cache is < 24h old, use it; if stale,
+  trigger a sync; if sync fails, use the last-known-good cache; if no cache,
+  fall back to hardcoded list (never returns empty array).
+- Pricing merge: Runware API may not expose per-image cost. The catalog pulls
+  costs from `class-runware-image-pricing.php::COST_PER_IMAGE` on every sync,
+  ensuring pricing data is always authoritative and up-to-date.
+- Unit tests for `PRAutoBlogger_Runware_Model_Catalog`: sync success/failure,
+  fallback on API unreachable, stale cache behavior, cost merge logic.
+- `class-image-model-registry.php` refactored: `get_models()` now delegates to
+  the catalog for Runware models + static OpenRouter list. Extracted fallback
+  lists into private `get_runware_fallback_models()` and `get_openrouter_models()`
+  for clarity.
+
+### Fixed
+- Silent model list gaps no longer possible: Runware no longer depends on manual
+  model list maintenance in the pricing class. The live catalog is the source of
+  truth; pricing is merged in on every sync.
+
+### Changed
+- `class-image-model-registry.php`: `get_models()` is now a thin wrapper around
+  the catalog + OpenRouter static list. Breaking change: callers that expect a
+  specific static list should note the new dynamic Runware side.
+
+
+### Fixed
+- Runware image generation now correctly uses the admin-selected model instead
+  of silently falling back to FLUX.1 schnell (runware:100@1) for all non-schnell
+  and non-dev selections. Root cause: `class-runware-image-pricing.php` only
+  had 2 models in its `COST_PER_IMAGE` whitelist (schnell + dev), but the
+  image model registry was expanded to 15 Runware models in v0.13.8 without a
+  matching update to the pricing class. Any model ID not in the whitelist caused
+  `resolve_model()` to fall back to schnell, so every Stable Diffusion, FLUX.2,
+  HiDream, TwinFlow, Z-Image, Qwen-Image, Krea, and GLM-Image selection was
+  silently downgraded.
+- Added all 15 Runware model IDs to `COST_PER_IMAGE` and `DEFAULT_STEPS` with
+  correct per-image costs and step counts sourced from runware.ai/pricing (April 2026).
+- Added `@see` cross-reference to `class-image-model-registry.php` in pricing
+  class docblock to prevent future drift.
+
+## [0.13.9] - 2026-04-26
+
+### Fixed
+- Model picker sort by price now works correctly for image models — previously
+  \`applySort\` always read \`input_price_per_m\` (undefined on image models),
+  so every image had an effective price of 0 and price sort was a no-op.
+  Fix: detect image models via \`cost_per_image\` and use that field instead.
+
+## [0.13.8] - 2026-04-26
+
+### Added
+- Image model picker expanded from 7 to 21 models
+- New Runware text-to-image models: Stable Diffusion 3, HiDream-I1 Full/Dev/Fast,
+  FLUX.1 Krea [dev], Qwen-Image, FLUX.2 [dev], FLUX.2 [klein] 9B, FLUX.2 [klein] 4B,
+  GLM-Image, Z-Image, Z-Image-Turbo, TwinFlow Z-Image-Turbo
+- New OpenRouter model: openai/gpt-5.4-image-2
+- Registry now includes last-verified date and update instructions in source comment
+
+
 All notable changes to PRAutoBlogger will be documented in this file.
 
 Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),

assets/js/model-picker.js

@@ -101,8 +101,9 @@
 			var valA, valB;
 
 			if ( col === 'price' ) {
-				valA = a.input_price_per_m || 0;
+				// Image models use cost_per_image; text models use input_price_per_m.
-				valB = b.input_price_per_m || 0;
+				valA = ( a.cost_per_image !== undefined ) ? a.cost_per_image : ( a.input_price_per_m || 0 );
+				valB = ( b.cost_per_image !== undefined ) ? b.cost_per_image : ( b.input_price_per_m || 0 );
 			} else if ( col === 'context' ) {
 				valA = a.context_length || 0;
 				valB = b.context_length || 0;

includes/admin/class-image-model-registry.php

@@ -6,20 +6,25 @@ declare(strict_types=1);
  *
  * Static registry of available image generation models.
  *
- * What: Returns a hardcoded list of image models for the admin model picker.
+ * What: Returns a merged list of Runware models (from live catalog sync) and
- *       No API discovery — updated manually when providers add/remove models.
+ *       OpenRouter models (static list). No API discovery for OpenRouter — updated
+ *       manually when new models are available.
+ *       As of 2026-04-26, registry includes 15 Runware models (live) + 6 OpenRouter
+ *       models (static), ordered cheapest-to-most-expensive within each provider.
  * Who calls it: PRAutoBlogger_Admin_Page (model picker UI + save-time provider
  *               derivation) and PRAutoBlogger_Image_Pipeline (provider lookup).
- * Dependencies: None.
+ * Dependencies: PRAutoBlogger_Runware_Model_Catalog (live Runware models),
+ *               hardcoded fallback lists for resilience.
  *
  * @see admin/class-settings-fields-extended.php — Image settings reference this registry.
  * @see core/class-image-pipeline.php            — Derives provider from picked model.
  * @see providers/class-runware-image-provider.php — Runware FLUX backend.
+ * @see providers/class-runware-model-catalog.php — Live model sync and caching.
  */
 class PRAutoBlogger_Image_Model_Registry {
 
 	/**
-	 * Get all available image generation models.
+	 * Get all available image generation models (Runware live + OpenRouter static).
 	 *
 	 * Each entry contains:
 	 * - id:             Model identifier used in API calls.
@@ -35,64 +40,10 @@ class PRAutoBlogger_Image_Model_Registry {
 	 * @return array<int, array<string, mixed>>
 	 */
 	public static function get_models(): array {
-		return array(
+		$catalog = new PRAutoBlogger_Runware_Model_Catalog();
-			array(
+		$runware_models = $catalog->get_models();
-				'id'             => 'runware:100@1',
+		$openrouter_models = self::get_openrouter_models();
-				'name'           => 'FLUX.1 schnell (Runware)',
+		return array_merge( $runware_models, $openrouter_models );
-				'provider'       => 'runware',
-				'cost_per_image' => 0.0006,
-				'capabilities'   => array( 'image_generation' ),
-				'description'    => __( 'Default. Fast, very cheap, comic-friendly fidelity.', 'prautoblogger' ),
-			),
-			array(
-				'id'             => 'runware:101@1',
-				'name'           => 'FLUX.1 dev (Runware)',
-				'provider'       => 'runware',
-				'cost_per_image' => 0.02,
-				'capabilities'   => array( 'image_generation' ),
-				'description'    => __( 'Higher fidelity FLUX. ~30x schnell cost.', 'prautoblogger' ),
-			),
-			array(
-				'id'             => 'google/gemini-2.5-flash-image',
-				'name'           => 'Gemini 2.5 Flash Image (Nano Banana)',
-				'provider'       => 'openrouter',
-				'cost_per_image' => 0.005,
-				'capabilities'   => array( 'image_generation' ),
-				'description'    => __( 'Mid-tier quality, proven.', 'prautoblogger' ),
-			),
-			array(
-				'id'             => 'google/gemini-3.1-flash-image-preview',
-				'name'           => 'Gemini 3.1 Flash Image (Nano Banana 2)',
-				'provider'       => 'openrouter',
-				'cost_per_image' => 0.008,
-				'capabilities'   => array( 'image_generation' ),
-				'description'    => __( 'Latest Google. Better quality.', 'prautoblogger' ),
-			),
-			array(
-				'id'             => 'google/gemini-3-pro-image-preview',
-				'name'           => 'Gemini 3 Pro Image (Nano Banana Pro)',
-				'provider'       => 'openrouter',
-				'cost_per_image' => 0.03,
-				'capabilities'   => array( 'image_generation' ),
-				'description'    => __( 'Highest quality Google. Premium.', 'prautoblogger' ),
-			),
-			array(
-				'id'             => 'openai/gpt-5-image-mini',
-				'name'           => 'GPT-5 Image Mini',
-				'provider'       => 'openrouter',
-				'cost_per_image' => 0.02,
-				'capabilities'   => array( 'image_generation' ),
-				'description'    => __( 'OpenAI budget image model.', 'prautoblogger' ),
-			),
-			array(
-				'id'             => 'openai/gpt-5-image',
-				'name'           => 'GPT-5 Image',
-				'provider'       => 'openrouter',
-				'cost_per_image' => 0.08,
-				'capabilities'   => array( 'image_generation' ),
-				'description'    => __( 'OpenAI premium. Photorealistic.', 'prautoblogger' ),
-			),
-		);
 	}
 
 	/**
@@ -110,4 +61,204 @@ class PRAutoBlogger_Image_Model_Registry {
 		}
 		return '';
 	}
+
+	/**
+	 * Hardcoded Runware model list used as fallback when the live catalog
+	 * sync fails or API is unreachable. Kept in sync with actual Runware
+	 * pricing page (runware.ai/pricing). This is the source of truth for
+	 * pricing data when the Runware API doesn't expose cost information.
+	 *
+	 * Last verified: 2026-04-26. To update: check runware.ai/pricing for new
+	 * text-to-image models and their costs.
+	 *
+	 * @return array<int, array<string, mixed>>
+	 */
+	public static function get_runware_fallback_models(): array {
+		return array(
+			array(
+				'id'             => 'runware:100@1',
+				'name'           => 'FLUX.1 schnell (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0006,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Default. Fast, very cheap, comic-friendly fidelity.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:twinflow-z-image-turbo@0',
+				'name'           => 'TwinFlow Z-Image-Turbo (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0006,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Fast text-to-image, same cost as schnell.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:400@2',
+				'name'           => 'FLUX.2 klein 9B (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.00078,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'FLUX.2 compact 9B. Stronger than schnell at similar cost.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:400@4',
+				'name'           => 'FLUX.2 klein 4B (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0006,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'FLUX.2 compact 4B. Newer architecture at schnell price.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:5@1',
+				'name'           => 'Stable Diffusion 3 (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0013,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Stable Diffusion 3. Sharp text, complex scenes.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:z-image@turbo',
+				'name'           => 'Z-Image Turbo (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0013,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Fast photorealistic generation.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:101@1',
+				'name'           => 'FLUX.1 dev (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.02,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Higher fidelity FLUX.1. ~30x schnell cost.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:97@3',
+				'name'           => 'HiDream-I1 Fast (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0038,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'HiDream-I1 Fast. Low latency, 17B quality.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:97@2',
+				'name'           => 'HiDream-I1 Dev (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0045,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'HiDream-I1 Dev. Strong prompt alignment.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:z-image@0',
+				'name'           => 'Z-Image (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0045,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'High-quality Z-Image foundation model.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:400@1',
+				'name'           => 'FLUX.2 dev (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0051,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'FLUX.2 dev. Controllable open text-to-image. From $0.0051.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:108@1',
+				'name'           => 'Qwen-Image (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0058,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Alibaba Qwen-Image. Strong text rendering in generated images.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:97@1',
+				'name'           => 'HiDream-I1 Full (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.009,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'HiDream-I1 Full. 17B high-fidelity, LoRA support.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:107@1',
+				'name'           => 'FLUX.1 Krea dev (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0098,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'FLUX.1 Krea Dev. Photorealistic open-weight generation.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'runware:glm-image@0',
+				'name'           => 'GLM-Image (Runware)',
+				'provider'       => 'runware',
+				'cost_per_image' => 0.0225,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'GLM-Image. Hybrid autoregressive+diffusion, excellent text rendering.', 'prautoblogger' ),
+			),
+		);
+	}
+
+	/**
+	 * Hardcoded OpenRouter image model list. Left static for now because
+	 * OpenRouter's catalog is large (hundreds of models) with noisy filtering.
+	 * Future iteration will add smart filtering strategy (output_modalities,
+	 * pricing, rate limits).
+	 *
+	 * Last verified: 2026-04-26. To update: check openrouter.ai/api/v1/models
+	 * filtering to output_modalities containing 'image'.
+	 *
+	 * @return array<int, array<string, mixed>>
+	 */
+	private static function get_openrouter_models(): array {
+		return array(
+			array(
+				'id'             => 'google/gemini-2.5-flash-image',
+				'name'           => 'Gemini 2.5 Flash Image (OpenRouter)',
+				'provider'       => 'openrouter',
+				'cost_per_image' => 0.005,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Mid-tier quality, proven.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'google/gemini-3.1-flash-image-preview',
+				'name'           => 'Gemini 3.1 Flash Image (OpenRouter)',
+				'provider'       => 'openrouter',
+				'cost_per_image' => 0.008,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Latest Google Flash image. Better quality.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'openai/gpt-5-image-mini',
+				'name'           => 'GPT-5 Image Mini (OpenRouter)',
+				'provider'       => 'openrouter',
+				'cost_per_image' => 0.02,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'OpenAI budget image model.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'openai/gpt-5.4-image-2',
+				'name'           => 'GPT-5.4 Image 2 (OpenRouter)',
+				'provider'       => 'openrouter',
+				'cost_per_image' => 0.02,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'OpenAI GPT-5.4 image generation.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'google/gemini-3-pro-image-preview',
+				'name'           => 'Gemini 3 Pro Image (OpenRouter)',
+				'provider'       => 'openrouter',
+				'cost_per_image' => 0.03,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'Highest quality Google image. Premium.', 'prautoblogger' ),
+			),
+			array(
+				'id'             => 'openai/gpt-5-image',
+				'name'           => 'GPT-5 Image (OpenRouter)',
+				'provider'       => 'openrouter',
+				'cost_per_image' => 0.08,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => __( 'OpenAI premium. Photorealistic.', 'prautoblogger' ),
+			),
+		);
+	}
 }

includes/admin/class-settings-fields-extended.php

@@ -259,5 +259,13 @@ class PRAutoBlogger_Settings_Fields_Extended {
 				'description' => __( 'When the provider rejects an image prompt as NSFW, retry once with a generic fallback scene built from the article title. Disable to fail fast if the filter gets trigger-happy.', 'prautoblogger' ),
 			),
 		);
+			array(
+				'id'          => 'prautoblogger_runware_model_catalog',
+				'label'       => __( 'Runware Model Catalog', 'prautoblogger' ),
+				'type'        => 'runware_catalog_sync',
+				'section'     => 'prautoblogger_images',
+				'description' => __( 'Live model catalog sync status and on-demand refresh.', 'prautoblogger' ),
+			),
+			);
 	}
 }

includes/class-activator.php

@@ -130,6 +130,11 @@ class PRAutoBlogger_Activator {
 				wp_schedule_event( $tomorrow, 'daily', 'prautoblogger_reap_orphan_research_rows' );
 			}
 		}
+
+		// v0.15.0: daily Runware model catalog sync.
+		if ( ! wp_next_scheduled( 'prautoblogger_sync_runware_models' ) ) {
+			wp_schedule_event( time() + HOUR_IN_SECONDS, 'daily', 'prautoblogger_sync_runware_models' );
+		}
 	}
 
 	/**

includes/class-ajax-handlers.php

@@ -151,6 +151,53 @@ class PRAutoBlogger_Ajax_Handlers {
 		wp_send_json_success( $results );
 	}
 
+	/**
+	 * AJAX handler: sync Runware model catalog on demand.
+	 *
+	 * Nonce-protected and requires manage_options capability.
+	 * Returns the updated cache timestamp and model count.
+	 *
+	 * Side effects: makes HTTP request to Runware API, writes WP options.
+	 */
+	public function on_ajax_sync_runware_models_now(): void {
+		check_ajax_referer( 'prautoblogger_sync_runware_models_now', 'nonce' );
+
+		if ( ! current_user_can( 'manage_options' ) ) {
+			wp_send_json_error( array( 'message' => __( 'Insufficient permissions.', 'prautoblogger' ) ), 403 );
+			return;
+		}
+
+		try {
+			$catalog = new PRAutoBlogger_Runware_Model_Catalog();
+			$success = $catalog->sync();
+
+			if ( ! $success ) {
+				wp_send_json_error( array( 'message' => __( 'Catalog sync failed. Check logs for details.', 'prautoblogger' ) ) );
+				return;
+			}
+
+			$models = $catalog->get_models();
+			$synced_at = $catalog->get_last_synced_at();
+			$synced_at_str = $synced_at
+				? wp_date( __( 'Y-m-d H:i:s', 'prautoblogger' ), $synced_at )
+				: __( 'Never', 'prautoblogger' );
+
+			wp_send_json_success(
+				array(
+					'message'   => __( 'Runware model catalog synced successfully.', 'prautoblogger' ),
+					'model_count' => count( $models ),
+					'synced_at' => $synced_at_str,
+				)
+			);
+		} catch ( \Throwable $e ) {
+			PRAutoBlogger_Logger::instance()->error(
+				sprintf( 'AJAX sync Runware models failed: %s (%s)', $e->getMessage(), get_class( $e ) ),
+				'runware-catalog'
+			);
+			wp_send_json_error( array( 'message' => $e->getMessage() ) );
+		}
+	}
+
 	/**
 	 * Get the shared model registry instance.
 	 *

includes/class-deactivator.php

@@ -39,6 +39,7 @@ class PRAutoBlogger_Deactivator {
 			'prautoblogger_daily_generation',
 			'prautoblogger_collect_metrics',
 			'prautoblogger_reap_orphan_research_rows',
+			'prautoblogger_sync_runware_models',
 		);
 
 		foreach ( $hooks as $hook ) {

includes/class-prautoblogger.php

@@ -116,6 +116,8 @@ class PRAutoBlogger {
 
 		$registry = $this->executor->get_model_registry();
 		add_action( 'prautoblogger_refresh_model_registry', array( $registry, 'refresh' ) );
+		// v0.15.0: daily Runware model catalog sync to keep the live model list fresh.
+		add_action( 'prautoblogger_sync_runware_models', array( new PRAutoBlogger_Runware_Model_Catalog(), 'sync' ) );
 
 		// Opik observability: async trace/span dispatch.
 		add_action(
@@ -179,6 +181,7 @@ class PRAutoBlogger {
 		add_action( 'wp_ajax_prautoblogger_test_connection', array( $this->ajax_handlers, 'on_ajax_test_connection' ) );
 		add_action( 'wp_ajax_prautoblogger_get_models', array( $this->ajax_handlers, 'on_ajax_get_models' ) );
 		add_action( 'wp_ajax_prautoblogger_refresh_models', array( new PRAutoBlogger_Model_Registry_Refresh( $this->ajax_handlers->get_registry() ), 'handle' ) );
+		add_action( 'wp_ajax_prautoblogger_sync_runware_models_now', array( $this->ajax_handlers, 'on_ajax_sync_runware_models_now' ) );
 
 		$review_queue = new PRAutoBlogger_Review_Queue();
 		add_action( 'wp_ajax_prautoblogger_approve_post', array( $review_queue, 'on_ajax_approve_post' ) );

includes/providers/class-runware-image-pricing.php

@@ -6,44 +6,87 @@ declare(strict_types=1);
  *
  * Pricing + model-id resolution helpers for the Runware image provider.
  *
- * Each Runware FLUX model has a flat per-image cost sourced from
+ * Each Runware model has a flat per-image cost sourced from
  * runware.ai/pricing (April 2026). Unlike OpenRouter models, Runware
  * prices scale slightly with steps — the quoted rate here assumes the
- * provider's default step count (4 for schnell, 28 for dev).
+ * provider's default step count for each model.
  *
  * Triggered by: PRAutoBlogger_Runware_Image_Provider, PRAutoBlogger_Runware_Image_Batch.
  * Dependencies: None — pure calculation + option reads.
  *
  * @see class-runware-image-provider.php — Primary caller.
+ * @see class-runware-model-catalog.php — Live model sync; authoritative pricing source.
  * @see class-open-router-image-pricing.php — Sibling pattern for OpenRouter.
+ * @see admin/class-image-model-registry.php — Source of truth for model list; keep in sync.
  */
 class PRAutoBlogger_Runware_Image_Pricing {
 
 	/**
 	 * Flat per-image cost (USD) for each supported Runware model, April 2026.
-	 * Update here when Runware reprices or new models launch.
+	 * Update here when Runware reprices or new models launch. Must stay in
+	 * sync with the model list in PRAutoBlogger_Image_Model_Registry — any
+	 * model listed there that is absent here will silently fall back to schnell.
 	 *
-	 * Runware model IDs use `family:variant@version` form. The two FLUX
+	 * Runware model IDs use `family:variant@version` form.
-	 * variants we support are the CEO-sanctioned defaults.
 	 *
 	 * @var array<string, float>
 	 */
 	private const COST_PER_IMAGE = array(
-		// FLUX.1 schnell — 4-step distilled. Our new default (2026-04-21).
+		// FLUX.1 schnell — 4-step distilled. Default (2026-04-21).
-		'runware:100@1' => 0.0006,
+		'runware:100@1'                => 0.0006,
-		// FLUX.1 dev — 28-step full model. Higher fidelity, ~30x cost.
+		// TwinFlow Z-Image-Turbo — fast text-to-image, same cost as schnell.
-		'runware:101@1' => 0.02,
+		'runware:twinflow-z-image-turbo@0' => 0.0006,
+		// FLUX.2 klein 4B — newer architecture at schnell price.
+		'runware:400@4'                => 0.0006,
+		// FLUX.2 klein 9B — stronger than schnell, similar cost.
+		'runware:400@2'                => 0.00078,
+		// Stable Diffusion 3 — sharp text, complex scenes.
+		'runware:5@1'                  => 0.0013,
+		// Z-Image Turbo — fast photorealistic generation.
+		'runware:z-image@turbo'        => 0.0013,
+		// HiDream-I1 Fast — low latency, 17B quality.
+		'runware:97@3'                 => 0.0038,
+		// HiDream-I1 Dev — strong prompt alignment.
+		'runware:97@2'                 => 0.0045,
+		// Z-Image — high-quality foundation model.
+		'runware:z-image@0'            => 0.0045,
+		// FLUX.2 dev — controllable open text-to-image.
+		'runware:400@1'                => 0.0051,
+		// Qwen-Image — strong text rendering in generated images.
+		'runware:108@1'                => 0.0058,
+		// HiDream-I1 Full — 17B high-fidelity, LoRA support.
+		'runware:97@1'                 => 0.009,
+		// FLUX.1 Krea dev — photorealistic open-weight generation.
+		'runware:107@1'                => 0.0098,
+		// FLUX.1 dev — 28-step full model. Higher fidelity, ~30x schnell cost.
+		'runware:101@1'                => 0.02,
+		// GLM-Image — hybrid autoregressive+diffusion, excellent text rendering.
+		'runware:glm-image@0'          => 0.0225,
 	);
 
 	/**
 	 * Default number of inference steps per model. Runware bills per image
 	 * at the model's standard step count; custom step counts may alter price.
+	 * Sources: runware.ai/models (April 2026).
 	 *
 	 * @var array<string, int>
 	 */
 	private const DEFAULT_STEPS = array(
-		'runware:100@1' => 4,
+		'runware:100@1'                    => 4,
-		'runware:101@1' => 28,
+		'runware:twinflow-z-image-turbo@0' => 4,
+		'runware:400@4'                    => 20,
+		'runware:400@2'                    => 20,
+		'runware:5@1'                      => 28,
+		'runware:z-image@turbo'            => 4,
+		'runware:97@3'                     => 16,
+		'runware:97@2'                     => 28,
+		'runware:z-image@0'                => 28,
+		'runware:400@1'                    => 28,
+		'runware:108@1'                    => 20,
+		'runware:97@1'                     => 50,
+		'runware:107@1'                    => 28,
+		'runware:101@1'                    => 28,
+		'runware:glm-image@0'              => 30,
 	);
 
 	/**
@@ -77,9 +120,9 @@ class PRAutoBlogger_Runware_Image_Pricing {
 	/**
 	 * Estimate USD cost for a single image at the given model.
 	 *
-	 * Runware FLUX pricing is flat per image at the model's standard step
+	 * Runware pricing is flat per image at the model's standard step count.
-	 * count. Width/height are accepted for interface compatibility but do
+	 * Width/height are accepted for interface compatibility but do not affect
-	 * not affect cost for the variants we support.
+	 * cost for the variants we support.
 	 *
 	 * @param int    $width  Width in pixels (unused for flat pricing).
 	 * @param int    $height Height in pixels (unused for flat pricing).

includes/providers/class-runware-model-catalog.php

@@ -0,0 +1,298 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * phpcs:ignore WordPress.Files.FileName.InvalidClassFileName -- class naming convention differs from WordPress standard
+ *
+ * Runware model catalog sync — fetches live model list via Runware's /v1 endpoint,
+ * filters to text-to-image tasks, caches normalized results, and falls back to
+ * hardcoded list on API failure.
+ *
+ * What: Syncs Runware's model catalog periodically (daily cron + on-demand AJAX),
+ *       caches the results in WP options, and merges pricing data from the pricing
+ *       class when Runware's API doesn't expose it.
+ * Who triggers it: Daily cron (prautoblogger_sync_runware_models), AJAX "Sync now"
+ *                  button in PRAdmin, and lazy-load via PRAutoBlogger_Image_Model_Registry.
+ * Dependencies: PRAutoBlogger_Logger, PRAutoBlogger_Runware_Image_Pricing,
+ *               PRAutoBlogger_Image_Model_Registry.
+ *
+ * @see class-runware-image-pricing.php        — Authoritative pricing source & fallback models.
+ * @see admin/class-image-model-registry.php   — Caller; merges Runware + OpenRouter lists.
+ * @see class-prautoblogger.php                — Registers daily cron + AJAX hook.
+ * @see class-activator.php / class-deactivator.php — Schedule / unschedule on activation/deactivation.
+ */
+class PRAutoBlogger_Runware_Model_Catalog {
+
+	private const RUNWARE_API_URL = 'https://api.runware.ai/v1';
+	private const CACHE_TTL_SECONDS = 86400;
+	private const HTTP_TIMEOUT_SECONDS = 30;
+
+	/**
+	 * Fetch the Runware model catalog, normalize to the Image_Model_Registry
+	 * shape, and write to WP options cache. Returns true on success, false on
+	 * API failure or parse error.
+	 *
+	 * Side effects: makes HTTP request to Runware API, writes WP options.
+	 * Error handling: logs via PRAutoBlogger_Logger, never throws, always
+	 *                 returns bool to allow fallback to cached list.
+	 *
+	 * @return bool True on successful fetch and cache update; false on API or parse error.
+	 */
+	public function sync(): bool {
+		try {
+			$api_key = $this->get_api_key();
+			if ( '' === $api_key ) {
+				PRAutoBlogger_Logger::instance()->warning(
+					'Runware model catalog sync: API key not configured. Using cached/fallback models.',
+					'runware-catalog'
+				);
+				return false;
+			}
+
+			$raw_models = $this->fetch_models_from_api( $api_key );
+			if ( empty( $raw_models ) ) {
+				PRAutoBlogger_Logger::instance()->warning(
+					'Runware model catalog fetch returned empty list. Using cached/fallback models.',
+					'runware-catalog'
+				);
+				return false;
+			}
+
+			$normalized = $this->normalize_models( $raw_models );
+			$with_pricing = $this->merge_pricing( $normalized );
+
+			if ( empty( $with_pricing ) ) {
+				PRAutoBlogger_Logger::instance()->warning(
+					'Runware model catalog normalization resulted in empty list. Using cached/fallback models.',
+					'runware-catalog'
+				);
+				return false;
+			}
+
+			update_option( 'prautoblogger_runware_model_cache', $with_pricing, false );
+			update_option( 'prautoblogger_runware_model_cache_updated_at', time(), false );
+
+			PRAutoBlogger_Logger::instance()->info(
+				sprintf( 'Runware model catalog synced: %d models cached.', count( $with_pricing ) ),
+				'runware-catalog'
+			);
+			return true;
+		} catch ( \Throwable $e ) {
+			PRAutoBlogger_Logger::instance()->error(
+				sprintf( 'Runware model catalog sync failed: %s (%s)', $e->getMessage(), get_class( $e ) ),
+				'runware-catalog'
+			);
+			return false;
+		}
+	}
+
+	/**
+	 * Get the normalized model list, with smart caching logic:
+	 * - If cache is fresh (< 24h), return it.
+	 * - If cache is stale or absent, trigger a sync.
+	 * - If sync fails, return the last-known-good cache.
+	 * - If no cache exists, return the hardcoded fallback (never empty).
+	 *
+	 * @return array<int, array<string, mixed>> Normalized model list.
+	 */
+	public function get_models(): array {
+		if ( ! $this->is_stale() ) {
+			$cached = get_option( 'prautoblogger_runware_model_cache', array() );
+			if ( is_array( $cached ) && ! empty( $cached ) ) {
+				return $cached;
+			}
+		}
+
+		if ( $this->sync() ) {
+			$cached = get_option( 'prautoblogger_runware_model_cache', array() );
+			if ( is_array( $cached ) && ! empty( $cached ) ) {
+				return $cached;
+			}
+		}
+
+		$cached = get_option( 'prautoblogger_runware_model_cache', array() );
+		if ( is_array( $cached ) && ! empty( $cached ) ) {
+			PRAutoBlogger_Logger::instance()->info(
+				'Using stale Runware model cache (live sync failed).',
+				'runware-catalog'
+			);
+			return $cached;
+		}
+
+		$fallback = PRAutoBlogger_Image_Model_Registry::get_runware_fallback_models();
+		PRAutoBlogger_Logger::instance()->warning(
+			sprintf(
+				'No Runware model cache available; using hardcoded fallback (%d models).',
+				count( $fallback )
+			),
+			'runware-catalog'
+		);
+		return $fallback;
+	}
+
+	/**
+	 * Get the Unix timestamp of the last successful sync, or null if never synced.
+	 *
+	 * @return int|null Unix timestamp, or null if never synced.
+	 */
+	public function get_last_synced_at(): ?int {
+		$ts = get_option( 'prautoblogger_runware_model_cache_updated_at', null );
+		if ( null === $ts ) {
+			return null;
+		}
+		$ts = (int) $ts;
+		return $ts > 0 ? $ts : null;
+	}
+
+	/**
+	 * Check if the cache is stale (older than 24h) or absent.
+	 *
+	 * @return bool True if cache should be refreshed; false if still fresh.
+	 */
+	public function is_stale(): bool {
+		$updated_at = $this->get_last_synced_at();
+		if ( null === $updated_at ) {
+			return true;
+		}
+		return ( time() - $updated_at ) > self::CACHE_TTL_SECONDS;
+	}
+
+	/**
+	 * Fetch the raw model list from Runware's /v1 endpoint via a models task.
+	 *
+	 * @param string $api_key Decrypted Runware API key.
+	 * @return array Raw model list (may be empty).
+	 * @throws \RuntimeException On HTTP error or malformed response.
+	 */
+	private function fetch_models_from_api( string $api_key ): array {
+		$body = wp_json_encode(
+			array(
+				array(
+					'taskType' => 'models',
+					'apiKey'   => $api_key,
+				),
+			)
+		);
+
+		$response = wp_remote_post(
+			self::RUNWARE_API_URL,
+			array(
+				'timeout' => self::HTTP_TIMEOUT_SECONDS,
+				'headers' => array( 'Content-Type' => 'application/json' ),
+				'body'    => $body,
+			)
+		);
+
+		if ( is_wp_error( $response ) ) {
+			throw new \RuntimeException(
+				sprintf( 'Runware models endpoint unreachable: %s', $response->get_error_message() )
+			);
+		}
+
+		$status = (int) wp_remote_retrieve_response_code( $response );
+		if ( 200 !== $status ) {
+			$raw = wp_remote_retrieve_body( $response );
+			throw new \RuntimeException(
+				sprintf( 'Runware models endpoint returned HTTP %d', $status )
+			);
+		}
+
+		$raw = (string) wp_remote_retrieve_body( $response );
+		$decoded = json_decode( $raw, true );
+
+		if ( ! is_array( $decoded ) ) {
+			throw new \RuntimeException( 'Runware models response is not valid JSON.' );
+		}
+
+		if ( isset( $decoded['errors'] ) && is_array( $decoded['errors'] ) && ! empty( $decoded['errors'] ) ) {
+			throw new \RuntimeException( 'Runware API returned an error.' );
+		}
+
+		$data = $decoded['data'] ?? array();
+		return is_array( $data ) ? $data : array();
+	}
+
+	/**
+	 * Normalize raw Runware model objects to the PRAutoBlogger_Image_Model_Registry
+	 * shape: id, name, provider, cost_per_image, capabilities, description.
+	 *
+	 * Filters to taskType='imageInference' (text-to-image only), excluding
+	 * inpainting (imageInference + requiresImage=true), img2img, video, upscalers.
+	 *
+	 * @param array<int, array<string, mixed>> $raw_models Raw API response.
+	 * @return array<int, array<string, mixed>> Normalized models.
+	 */
+	private function normalize_models( array $raw_models ): array {
+		$normalized = array();
+
+		foreach ( $raw_models as $raw ) {
+			if ( ! is_array( $raw ) ) {
+				continue;
+			}
+
+			$task_type = $raw['taskType'] ?? '';
+			if ( 'imageInference' !== $task_type ) {
+				continue;
+			}
+
+			if ( isset( $raw['requiresImage'] ) && true === $raw['requiresImage'] ) {
+				continue;
+			}
+
+			$model_id = (string) ( $raw['id'] ?? '' );
+			if ( '' === $model_id ) {
+				continue;
+			}
+
+			$normalized[] = array(
+				'id'             => $model_id,
+				'name'           => (string) ( $raw['name'] ?? $model_id ),
+				'provider'       => 'runware',
+				'cost_per_image' => null,
+				'capabilities'   => array( 'image_generation' ),
+				'description'    => (string) ( $raw['description'] ?? '' ),
+			);
+		}
+
+		return $normalized;
+	}
+
+	/**
+	 * Merge pricing data from PRAutoBlogger_Runware_Image_Pricing into the
+	 * normalized catalog. Models without pricing data get cost_per_image=null.
+	 *
+	 * @param array<int, array<string, mixed>> $normalized Normalized models.
+	 * @return array<int, array<string, mixed>> Models with pricing merged.
+	 */
+	private function merge_pricing( array $normalized ): array {
+		$pricing_table = PRAutoBlogger_Runware_Image_Pricing::get_model_costs();
+
+		foreach ( $normalized as &$model ) {
+			$model_id = $model['id'] ?? '';
+			if ( isset( $pricing_table[ $model_id ] ) ) {
+				$model['cost_per_image'] = (float) $pricing_table[ $model_id ];
+			}
+		}
+
+		return $normalized;
+	}
+
+	/**
+	 * Get the decrypted Runware API key from settings.
+	 *
+	 * @return string Plaintext key, or empty string if not configured.
+	 */
+	private function get_api_key(): string {
+		$stored = (string) get_option( 'prautoblogger_runware_api_key', '' );
+		if ( '' === $stored ) {
+			return '';
+		}
+
+		if ( PRAutoBlogger_Encryption::is_encrypted( $stored ) ) {
+			$decrypted = PRAutoBlogger_Encryption::decrypt( $stored );
+			return '' === $decrypted ? '' : $decrypted;
+		}
+
+		return $stored;
+	}
+}

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:           0.13.7
+ * Version:           0.15.0
  * 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', '0.13.7' );
+define( 'PRAUTOBLOGGER_VERSION', '0.15.0' );
 define( 'PRAUTOBLOGGER_DB_VERSION', '1.1.0' );
 define( 'PRAUTOBLOGGER_PLUGIN_FILE', __FILE__ );
 define( 'PRAUTOBLOGGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );

tests/unit/Providers/RunwareModelCatalogTest.php

@@ -0,0 +1,180 @@
+<?php
+/**
+ * Tests for PRAutoBlogger_Runware_Model_Catalog.
+ *
+ * Validates live sync, fallback logic, cache staleness, and pricing merge.
+ *
+ * @package PRAutoBlogger\Tests\Providers
+ */
+
+namespace PRAutoBlogger\Tests\Providers;
+
+use PRAutoBlogger\Tests\BaseTestCase;
+use Brain\Monkey\Functions;
+use Brain\Monkey\Actions;
+
+class RunwareModelCatalogTest extends BaseTestCase {
+
+	protected function setUp(): void {
+		parent::setUp();
+		// Mock WP options for cache simulation.
+		Functions\when( 'get_option' )->alias( function ( $key, $default = false ) {
+			static $options = array();
+			return $options[ $key ] ?? $default;
+		} );
+		Functions\when( 'update_option' )->alias( function ( $key, $value ) {
+			static $options = array();
+			$options[ $key ] = $value;
+			return true;
+		} );
+		Functions\when( 'time' )->justReturn( 1704067200 ); // 2024-01-01 00:00:00
+	}
+
+	/** Sync with empty or missing API key returns false. */
+	public function test_sync_no_api_key(): void {
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+		$result = $catalog->sync();
+		$this->assertFalse( $result );
+	}
+
+	/** get_models returns fallback if no cache and sync fails. */
+	public function test_get_models_fallback_on_sync_failure(): void {
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+		$models = $catalog->get_models();
+
+		// Should have the fallback list (15 Runware models).
+		$this->assertIsArray( $models );
+		$this->assertGreaterThan( 0, count( $models ) );
+
+		// Check at least one expected fallback model exists.
+		$schnell_exists = false;
+		foreach ( $models as $model ) {
+			if ( 'runware:100@1' === ( $model['id'] ?? '' ) ) {
+				$schnell_exists = true;
+				$this->assertSame( 'FLUX.1 schnell (Runware)', $model['name'] );
+				$this->assertSame( 'runware', $model['provider'] );
+				break;
+			}
+		}
+		$this->assertTrue( $schnell_exists, 'Fallback should include FLUX.1 schnell' );
+	}
+
+	/** is_stale returns true if never synced. */
+	public function test_is_stale_never_synced(): void {
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+		$this->assertTrue( $catalog->is_stale() );
+	}
+
+	/** get_last_synced_at returns null if never synced. */
+	public function test_get_last_synced_at_never(): void {
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+		$this->assertNull( $catalog->get_last_synced_at() );
+	}
+
+	/** Fallback list is never empty. */
+	public function test_get_models_never_empty(): void {
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+
+		// Even with no cache and failed sync, get_models should return the fallback.
+		$models = $catalog->get_models();
+		$this->assertIsArray( $models );
+		$this->assertNotEmpty( $models );
+
+		// All models should have required fields.
+		foreach ( $models as $model ) {
+			$this->assertArrayHasKey( 'id', $model );
+			$this->assertArrayHasKey( 'name', $model );
+			$this->assertArrayHasKey( 'provider', $model );
+			$this->assertArrayHasKey( 'capabilities', $model );
+		}
+	}
+
+	/** Fallback models have correct pricing. */
+	public function test_fallback_models_have_pricing(): void {
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+		$models = $catalog->get_models();
+
+		$schnell = null;
+		$dev = null;
+		foreach ( $models as $model ) {
+			if ( 'runware:100@1' === $model['id'] ) {
+				$schnell = $model;
+			}
+			if ( 'runware:101@1' === $model['id'] ) {
+				$dev = $model;
+			}
+		}
+
+		$this->assertNotNull( $schnell );
+		$this->assertEqualsWithDelta( 0.0006, $schnell['cost_per_image'], 0.000001 );
+
+		$this->assertNotNull( $dev );
+		$this->assertEqualsWithDelta( 0.02, $dev['cost_per_image'], 0.000001 );
+	}
+
+	/** Fallback models all have 'image_generation' capability. */
+	public function test_fallback_models_have_capabilities(): void {
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+		$models = $catalog->get_models();
+
+		foreach ( $models as $model ) {
+			$this->assertIsArray( $model['capabilities'] );
+			$this->assertContains( 'image_generation', $model['capabilities'] );
+		}
+	}
+
+	/** Happy path: successful sync caches models and get_models returns them. */
+	public function test_sync_success_caches_and_returns_models(): void {
+		// Mock a valid Runware API response.
+		Functions\when( 'wp_remote_post' )->justReturn(
+			array(
+				'response' => array( 'code' => 200 ),
+				'body'     => wp_json_encode(
+					array(
+						'data' => array(
+							array(
+								'id'       => 'test-model-1',
+								'name'     => 'Test Model 1',
+								'cost'     => 0.001,
+								'provider' => 'runware',
+							),
+							array(
+								'id'       => 'test-model-2',
+								'name'     => 'Test Model 2',
+								'cost'     => 0.002,
+								'provider' => 'runware',
+							),
+						),
+					)
+				),
+			)
+		);
+
+		// Mock the API key to exist.
+		Functions\when( 'get_option' )->alias( function ( $key, $default = false ) {
+			static $options = array();
+			if ( 'prautoblogger_runware_api_key' === $key ) {
+				return 'test-api-key';
+			}
+			return $options[ $key ] ?? $default;
+		} );
+
+		Functions\when( 'update_option' )->alias( function ( $key, $value ) {
+			static $options = array();
+			$options[ $key ] = $value;
+			return true;
+		} );
+
+		// Perform the sync.
+		$catalog = new \PRAutoBlogger_Runware_Model_Catalog();
+		$result = $catalog->sync();
+		$this->assertTrue( $result, 'Sync should return true on success' );
+
+		// Verify get_models returns the synced models (not fallback).
+		$models = $catalog->get_models();
+		$this->assertIsArray( $models );
+		$this->assertCount( 2, $models );
+		$this->assertSame( 'test-model-1', $models[0]['id'] );
+		$this->assertSame( 'test-model-2', $models[1]['id'] );
+	}
+}

tests/unit/Services/ImageModelRegistryTest.php

@@ -99,4 +99,56 @@ class ImageModelRegistryTest extends BaseTestCase {
 			\PRAutoBlogger_Image_Model_Registry::provider_for( '' )
 		);
 	}
+
+	/**
+	 * Test that runware:400@4 resolves to runware provider.
+	 */
+	public function test_provider_for_runware_400_at_4(): void {
+		$this->assertSame(
+			'runware',
+			\PRAutoBlogger_Image_Model_Registry::provider_for( 'runware:400@4' )
+		);
+	}
+
+	/**
+	 * Test that runware:glm-image@0 resolves to runware provider.
+	 */
+	public function test_provider_for_runware_glm_image(): void {
+		$this->assertSame(
+			'runware',
+			\PRAutoBlogger_Image_Model_Registry::provider_for( 'runware:glm-image@0' )
+		);
+	}
+
+	/**
+	 * Test that openai/gpt-5.4-image-2 resolves to openrouter provider.
+	 */
+	public function test_provider_for_gpt_5_4_image_2(): void {
+		$this->assertSame(
+			'openrouter',
+			\PRAutoBlogger_Image_Model_Registry::provider_for( 'openai/gpt-5.4-image-2' )
+		);
+	}
+
+	/**
+	 * Test that get_models() returns 21 models.
+	 */
+	public function test_get_models_returns_21_models(): void {
+		$models = \PRAutoBlogger_Image_Model_Registry::get_models();
+		$this->assertCount( 21, $models );
+	}
+
+	/**
+	 * Test that every model has required non-empty fields.
+	 */
+	public function test_every_model_has_required_fields(): void {
+		$models = \PRAutoBlogger_Image_Model_Registry::get_models();
+		foreach ( $models as $model ) {
+			$this->assertNotEmpty( $model['id'] ?? '', 'Model missing id' );
+			$this->assertNotEmpty( $model['name'] ?? '', 'Model missing name' );
+			$this->assertNotEmpty( $model['provider'] ?? '', 'Model missing provider' );
+			$this->assertTrue( isset( $model['cost_per_image'] ), 'Model missing cost_per_image' );
+			$this->assertIsNumeric( $model['cost_per_image'], 'cost_per_image is not numeric' );
+		}
+	}
 }