fix(assembler): add prompt_version/agent_role to amortize SELECT; fix test mock

The amortize_research_costs() SELECT was missing prompt_version and agent_role —
the two fields added in the INSERT as part of the v0.19.4 pv/role fix. PHP 8.x
treats accessing an undefined property on stdClass as E_WARNING; PHPUnit
converts warnings to exceptions, which the reap() try/catch captures as
'DB error', leaving reaped=0 and breaking ResearchReaperTest on all 3 PHP versions.

Fix: extend the SELECT column list to include the two new fields so
$research_row has them populated. Update the ResearchReaperTest get_row mock
to return prompt_version and agent_role from fixtures (defaults null/'').

Agent-Session: engineer-prab-maint-fix-20260612

CHANGELOG.md

@@ -5,6 +5,41 @@ 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/).
 
+## [0.19.4] - 2026-06-12
+
+### Added
+- **GD-rung unit tests.** New `ImageComposerEditorTest.php` (7 tests) covering
+  `PRAutoBlogger_Image_Composer_Editor`: `wp_get_image_editor` WP_Error, resize WP_Error,
+  upscale-guard size mismatch, save WP_Error, zero-width target geometry guard, missing-role
+  guard, and successful OG resize happy path. Orchestrator ladder test
+  `test_gd_rung_emits_passthrough_featured_and_single_warning` added to `ImageComposerTest.php`,
+  asserting the Imagick renderer is never called on the `gd` rung and pass-through featured is
+  always first.
+  (Source: QA verdict `Peptide Repo CTO/qa-reviews/prautoblogger/2026-06-11-6f76df1.md` P2-1.)
+
+### Fixed
+- **Dead layout keys removed.** `caption_margin_right` (og) and `caption_side_padding` (square)
+  were defined in `Layout::defaults()` and exposed via the `prautoblogger_image_compose_layout`
+  filter but never consumed by the Imagick renderer. The og renderer positions text from
+  `logo_x + logo_w + caption_gap` (left-anchor); the square renderer uses centered `x` alignment.
+  Right-edge overflow is enforced via `caption_chars_per_line` on both variants. Keys removed;
+  filter users tuning these values had no effect and received no error.
+  (Source: QA verdict `Peptide Repo CTO/qa-reviews/prautoblogger/2026-06-11-6f76df1.md` P3-3.)
+- **Amortized research row now carries audit fields.** `Post_Assembler::amortize_research_costs()`
+  previously inserted per-article `llm_research` copies without `prompt_version` or `agent_role`,
+  leaving those columns NULL/empty while the original (correctly stamped) row was deleted.
+  SELECT now includes both columns; INSERT carries them forward from the original row.
+  (Source: phase-1 thread seq 49, seq 50 carried-list: "amortized llm_research rows pv=null/role
+  empty" — `convo/prautoblogger/threads/2026-06-pipeline-v2-phase1/`.)
+- **`fetch_page()` error body included in exception.** Non-200 responses from the Runware
+  modelSearch API now include up to 200 chars of the response body in the `RuntimeException`
+  message, making diagnosis from logs actionable without re-reproducing the request.
+  (Source: phase-1 thread seq 50 carried-list: "`fetch_page()` error-body logging".)
+
+### Notes
+- cto-review.yml isinstance guard (handoff item 5): the fix (`c.get("severity", "UNKNOWN")`)
+  is already applied at HEAD (line 454 of the workflow). No changes made.
+
 ## [0.19.3] - 2026-06-12
 
 ### Fixed

includes/core/class-image-composer-layout.php

@@ -38,6 +38,10 @@ class PRAutoBlogger_Image_Composer_Layout {
 	 * plugin; sizes are px. Values were tuned against rendered samples (see
 	 * PR #thread 2026-06-image-composer assets).
 	 *
+	 * Note: 'caption_margin_right' (og) and 'caption_side_padding' (square) were removed
+	 * in v0.19.4 — the Imagick renderer enforces right-edge geometry via caption_chars_per_line
+	 * and centered x positioning respectively, so those keys had no consumer.
+	 *
 	 * @return array<string, array<string, mixed>> Keyed by role: featured, og, square.
 	 */
 	public static function defaults(): array {
@@ -60,7 +64,6 @@ class PRAutoBlogger_Image_Composer_Layout {
 				'caption_size'          => 32,
 				'caption_color'         => '#FFFFFF',
 				'caption_gap'           => 24,
-				'caption_margin_right'  => 40,
 				'caption_max_lines'     => 2,
 				'caption_chars_per_line' => 52,
 				'caption_line_height'   => 1.3,
@@ -79,7 +82,6 @@ class PRAutoBlogger_Image_Composer_Layout {
 				'caption_color'         => self::COLOR_INK,
 				'caption_max_lines'     => 3,
 				'caption_chars_per_line' => 36,
-				'caption_side_padding'  => 64,
 				'caption_line_height'   => 1.3,
 			),
 		);

includes/core/class-post-assembler.php

@@ -91,7 +91,9 @@ class PRAutoBlogger_Post_Assembler {
 	 * are generated. Its cost is logged with the run_id but no post_id. After all
 	 * articles finish, this method divides the research cost evenly and inserts
 	 * one 'llm_research' row per article so the cost breakdown popover includes
-	 * the amortized research overhead.
+	 * the amortized research overhead. The audit fields prompt_version and
+	 * agent_role are carried from the original research row (v0.19.4 fix;
+	 * prior builds left them NULL/empty — see phase-1 thread seq 49).
 	 *
 	 * Side effects: database SELECT, INSERT, DELETE on generation_log.
 	 *
@@ -109,7 +111,7 @@ class PRAutoBlogger_Post_Assembler {
 		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
 		$research_row = $wpdb->get_row(
 			$wpdb->prepare( // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
-				"SELECT id, estimated_cost, provider, model, prompt_tokens, completion_tokens
+				"SELECT id, estimated_cost, provider, model, prompt_tokens, completion_tokens, prompt_version, agent_role
 				FROM {$table}
 				WHERE run_id = %s AND stage = 'llm_research' AND post_id IS NULL
 				LIMIT 1",
@@ -158,6 +160,8 @@ class PRAutoBlogger_Post_Assembler {
 					'estimated_cost'    => $amortized_cost,
 					'response_status'   => 'success',
 					'error_message'     => '',
+					'prompt_version'    => $research_row->prompt_version,
+					'agent_role'        => $research_row->agent_role ?? '',
 					'created_at'        => current_time( 'mysql' ),
 				)
 			);

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

@@ -138,7 +138,8 @@ class PRAutoBlogger_Runware_Catalog_Fetcher {
 	 * @param int    $offset  Pagination offset (0-based).
 	 * @param int    $limit   Page size.
 	 * @return array{results: array<int, array<string, mixed>>, totalResults: int}
-	 * @throws \RuntimeException On HTTP error or malformed response.
+	 * @throws \RuntimeException On HTTP error or malformed response (non-200 exceptions
+	 *               include up to 200 chars of the response body for diagnosis).
 	 */
 	private function fetch_page( string $api_key, int $offset, int $limit ): array {
 		$payload = array(
@@ -171,8 +172,10 @@ class PRAutoBlogger_Runware_Catalog_Fetcher {
 
 		$status = (int) wp_remote_retrieve_response_code( $response );
 		if ( 200 !== $status ) {
+			$raw_body   = (string) wp_remote_retrieve_body( $response );
+			$body_excerpt = '' !== $raw_body ? ' — body: ' . substr( $raw_body, 0, 200 ) : '';
 			throw new \RuntimeException(
-				sprintf( 'Runware modelSearch returned HTTP %d', $status )
+				sprintf( 'Runware modelSearch returned HTTP %d%s', $status, $body_excerpt )
 			);
 		}
 

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:           0.19.3
+ * Version:           0.19.4
  * 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', '0.19.3' );
+define( 'PRAUTOBLOGGER_VERSION', '0.19.4' );
 define( 'PRAUTOBLOGGER_DB_VERSION', '1.1.0' );
 define( 'PRAUTOBLOGGER_PLUGIN_FILE', __FILE__ );
 define( 'PRAUTOBLOGGER_PLUGIN_DIR', plugin_dir_path( __FILE__ ) );

tests/unit/Core/ImageComposerEditorTest.php

@@ -0,0 +1,246 @@
+<?php
+/**
+ * Tests for PRAutoBlogger_Image_Composer_Editor (GD/WP-editor rung).
+ *
+ * Validates the three main branches of cover_crop():
+ *   - wp_get_image_editor() returns WP_Error → null returned.
+ *   - Resize returns WP_Error → null returned.
+ *   - Exact size not reachable (would upscale) → null returned.
+ *   - Happy path: successful resize/save returns the expected shape.
+ * And compose_variants() iteration:
+ *   - Roles with bad geometry (0-width target) are skipped.
+ *   - Null cover_crop result for a role skips that role with a debug log.
+ *
+ * Brain Monkey stubs wp_get_image_editor, get_temp_dir so no filesystem or
+ * WP runtime is needed.
+ *
+ * @package PRAutoBlogger\Tests\Core
+ */
+
+namespace PRAutoBlogger\Tests\Core;
+
+use PRAutoBlogger\Tests\BaseTestCase;
+use Brain\Monkey\Functions;
+
+class ImageComposerEditorTest extends BaseTestCase {
+
+	/**
+	 * Stub get_option so PRAutoBlogger_Logger can construct without Brain Monkey
+	 * throwing on the prautoblogger_log_level option lookup. The logger is
+	 * instantiated whenever compose_variants() skips a role and fires a debug log.
+	 */
+	protected function setUp(): void {
+		parent::setUp();
+		$this->stub_get_option( [] ); // Logger reads prautoblogger_log_level; fall back to default.
+	}
+
+	/** Minimal layout geometry mirroring Layout::defaults() relevant keys. */
+	private function layout( int $og_w = 1200, int $og_h = 630, int $sq_w = 1080, int $sq_h = 1080 ): array {
+		return array(
+			'og'     => array( 'width' => $og_w, 'height' => $og_h ),
+			'square' => array( 'width' => $sq_w, 'height' => $sq_h ),
+		);
+	}
+
+	/** Helper: mock WP image editor whose resize returns a WP_Error. */
+	private function mock_editor_resize_error(): object {
+		$editor = $this->getMockBuilder( \stdClass::class )
+			->addMethods( array( 'resize', 'get_size', 'save' ) )
+			->getMock();
+		$editor->method( 'resize' )->willReturn( new \WP_Error( 'resize_fail', 'Mock resize failure' ) );
+
+		return $editor;
+	}
+
+	/** Helper: mock WP image editor whose save returns a WP_Error. */
+	private function mock_editor_save_error( int $w, int $h ): object {
+		$editor = $this->getMockBuilder( \stdClass::class )
+			->addMethods( array( 'resize', 'get_size', 'save' ) )
+			->getMock();
+		$editor->method( 'resize' )->willReturn( false ); // Not WP_Error = success.
+		$editor->method( 'get_size' )->willReturn( array( 'width' => $w, 'height' => $h ) );
+		$editor->method( 'save' )->willReturn( new \WP_Error( 'save_fail', 'Mock save failure' ) );
+
+		return $editor;
+	}
+
+	/** Helper: mock WP image editor that succeeds at the requested size. */
+	private function mock_editor_success( int $w, int $h ): object {
+		$editor = $this->getMockBuilder( \stdClass::class )
+			->addMethods( array( 'resize', 'get_size', 'save' ) )
+			->getMock();
+		$editor->method( 'resize' )->willReturn( false ); // Not WP_Error = success.
+		$editor->method( 'get_size' )->willReturn( array( 'width' => $w, 'height' => $h ) );
+		$editor->method( 'save' )->willReturn( array( 'path' => '/tmp/prab_ok.png' ) );
+
+		return $editor;
+	}
+
+	/** Helper: mock WP image editor that resizes but returns a different size (upscale guard). */
+	private function mock_editor_wrong_size( int $requested_w, int $requested_h, int $actual_w, int $actual_h ): object {
+		$editor = $this->getMockBuilder( \stdClass::class )
+			->addMethods( array( 'resize', 'get_size', 'save' ) )
+			->getMock();
+		$editor->method( 'resize' )->willReturn( false ); // Not WP_Error = success.
+		$editor->method( 'get_size' )->willReturn( array( 'width' => $actual_w, 'height' => $actual_h ) );
+
+		return $editor;
+	}
+
+	// ------------------------------------------------------------------
+	// cover_crop() failure paths (tested via compose_variants interface).
+	// ------------------------------------------------------------------
+
+	/**
+	 * wp_get_image_editor() returns WP_Error → role skipped,
+	 * no variants emitted.
+	 */
+	public function test_editor_wp_error_skips_role(): void {
+		Functions\when( 'get_temp_dir' )->justReturn( sys_get_temp_dir() . '/' );
+		Functions\when( 'wp_get_image_editor' )->justReturn(
+			new \WP_Error( 'no_editor', 'No image editor available' )
+		);
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$editor   = new \PRAutoBlogger_Image_Composer_Editor();
+		$variants = $editor->compose_variants( 'fake_bytes', array( 'og' ), $this->layout() );
+
+		$this->assertSame( array(), $variants, 'wp_get_image_editor WP_Error must yield no variants' );
+	}
+
+	/**
+	 * Resize step returns WP_Error → role skipped.
+	 */
+	public function test_resize_wp_error_skips_role(): void {
+		Functions\when( 'get_temp_dir' )->justReturn( sys_get_temp_dir() . '/' );
+		Functions\when( 'wp_get_image_editor' )->justReturn( $this->mock_editor_resize_error() );
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$editor   = new \PRAutoBlogger_Image_Composer_Editor();
+		$variants = $editor->compose_variants( 'fake_bytes', array( 'og' ), $this->layout() );
+
+		$this->assertSame( array(), $variants, 'Resize WP_Error must yield no variants' );
+	}
+
+	/**
+	 * Exact size not reachable (WP editor silently gives a different size
+	 * instead of upscaling) → role skipped via the size-mismatch guard.
+	 */
+	public function test_size_mismatch_skips_role(): void {
+		Functions\when( 'get_temp_dir' )->justReturn( sys_get_temp_dir() . '/' );
+		// Editor resizes to 900×473 when 1080×1080 square was requested (would upscale).
+		Functions\when( 'wp_get_image_editor' )->justReturn(
+			$this->mock_editor_wrong_size( 1080, 1080, 900, 473 )
+		);
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$editor   = new \PRAutoBlogger_Image_Composer_Editor();
+		$variants = $editor->compose_variants( 'fake_bytes', array( 'square' ), $this->layout() );
+
+		$this->assertSame( array(), $variants, 'Size mismatch (upscale guard) must yield no variants' );
+	}
+
+	/**
+	 * Save step returns WP_Error → role skipped.
+	 */
+	public function test_save_wp_error_skips_role(): void {
+		Functions\when( 'get_temp_dir' )->justReturn( sys_get_temp_dir() . '/' );
+		Functions\when( 'wp_get_image_editor' )->justReturn(
+			$this->mock_editor_save_error( 1200, 630 )
+		);
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$editor   = new \PRAutoBlogger_Image_Composer_Editor();
+		$variants = $editor->compose_variants( 'fake_bytes', array( 'og' ), $this->layout() );
+
+		$this->assertSame( array(), $variants, 'Save WP_Error must yield no variants' );
+	}
+
+	// ------------------------------------------------------------------
+	// Happy path — OG resizes successfully.
+	// ------------------------------------------------------------------
+
+	/**
+	 * Successful cover_crop for 'og': variant shape matches expectations.
+	 * file_put_contents and file_get_contents are exercised via temp file
+	 * in the test runner's writable temp dir; the editor mock does not
+	 * actually modify the file, but the class reads it back and returns its
+	 * bytes.
+	 */
+	public function test_successful_og_resize_returns_correct_shape(): void {
+		$temp_dir = sys_get_temp_dir() . '/';
+		Functions\when( 'get_temp_dir' )->justReturn( $temp_dir );
+
+		$og_w = 1200;
+		$og_h = 630;
+
+		Functions\when( 'wp_get_image_editor' )->alias(
+			function () use ( $og_w, $og_h ) {
+				return $this->mock_editor_success( $og_w, $og_h );
+			}
+		);
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$editor   = new \PRAutoBlogger_Image_Composer_Editor();
+		$variants = $editor->compose_variants( 'fake_source_bytes', array( 'og' ), $this->layout() );
+
+		$this->assertCount( 1, $variants, 'Successful resize must emit exactly one variant' );
+		$variant = $variants[0];
+		$this->assertSame( 'og', $variant['role'] );
+		$this->assertSame( 'image/png', $variant['mime_type'] );
+		$this->assertSame( $og_w, $variant['width'] );
+		$this->assertSame( $og_h, $variant['height'] );
+		$this->assertIsString( $variant['bytes'] );
+	}
+
+	// ------------------------------------------------------------------
+	// compose_variants() geometry guard.
+	// ------------------------------------------------------------------
+
+	/**
+	 * A role whose layout target has width=0 is skipped before any I/O —
+	 * no editor call, no variant emitted.
+	 */
+	public function test_zero_width_target_skips_role_before_editor(): void {
+		// Make the 'og' slot have zero width so the guard fires before any I/O.
+		$layout = array(
+			'og' => array( 'width' => 0, 'height' => 630 ),
+		);
+
+		// wp_get_image_editor must never be called.
+		Functions\expect( 'wp_get_image_editor' )->never();
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$editor   = new \PRAutoBlogger_Image_Composer_Editor();
+		$variants = $editor->compose_variants( 'fake_bytes', array( 'og' ), $layout );
+
+		$this->assertSame( array(), $variants );
+	}
+
+	/**
+	 * Role not present in layout skips cleanly.
+	 */
+	public function test_missing_role_in_layout_emits_no_variant(): void {
+		Functions\expect( 'wp_get_image_editor' )->never();
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$editor   = new \PRAutoBlogger_Image_Composer_Editor();
+		$variants = $editor->compose_variants( 'fake_bytes', array( 'nonexistent_role' ), array() );
+
+		$this->assertSame( array(), $variants );
+	}
+}

tests/unit/Core/ImageComposerTest.php

@@ -322,4 +322,43 @@ class ImageComposerTest extends BaseTestCase {
 			$this->assertStringStartsWith( 'prautoblogger_', $key );
 		}
 	}
+
+	/**
+	 * Ladder rung 2 forced via the override filter ('gd'): compose() emits the
+	 * pass-through featured variant as first element, and fires exactly one WARNING.
+	 * The Imagick renderer must never be called on this rung.
+	 *
+	 * Source: QA verdict 2026-06-11-6f76df1.md P2-1 and CTO handoff
+	 * convo/prautoblogger/threads/2026-06-maintenance-v0194/01-cto-maintenance-handoff.md item 1.
+	 */
+	public function test_gd_rung_emits_passthrough_featured_and_single_warning(): void {
+		Filters\expectApplied( 'prautoblogger_image_compose_capability' )->andReturn( 'gd' );
+
+		// Imagick renderer must not be invoked on the gd rung.
+		$renderer = $this->createMock( \PRAutoBlogger_Image_Composer_Imagick::class );
+		$renderer->expects( $this->never() )->method( 'compose_featured' );
+		$renderer->expects( $this->never() )->method( 'compose_og' );
+		$renderer->expects( $this->never() )->method( 'compose_square' );
+
+		// Stub the WP functions that cover_crop() calls inside the GD rung.
+		// get_temp_dir() is called first; wp_get_image_editor() returning WP_Error
+		// makes cover_crop() return null for every role → compose_variants() returns []
+		// → the GD rung emits only the pass-through featured (array_merge($passthrough, [])).
+		// This is the real degradation-to-passthrough path the test is designed to assert.
+		Functions\when( 'get_temp_dir' )->justReturn( sys_get_temp_dir() . '/' );
+		Functions\when( 'wp_get_image_editor' )->justReturn(
+			new \WP_Error( 'no_editor', 'Mock: no GD editor in test environment' )
+		);
+		Functions\when( 'is_wp_error' )->alias( static function ( $val ) {
+			return $val instanceof \WP_Error;
+		} );
+
+		$composer = new \PRAutoBlogger_Image_Composer( $renderer );
+		$variants = $composer->compose( $this->image_data, $this->context() );
+
+		// Pass-through featured variant is always first.
+		$this->assertNotEmpty( $variants );
+		$this->assertSame( 'featured', $variants[0]['role'] );
+		$this->assertSame( 'raw_base_bytes', $variants[0]['bytes'] );
+	}
 }

tests/unit/Core/ResearchReaperTest.php

@@ -110,6 +110,8 @@ class ResearchReaperTest extends BaseTestCase {
 							'model'             => $o->model ?? 'gemini-flash',
 							'prompt_tokens'     => $o->prompt_tokens ?? 1000,
 							'completion_tokens' => $o->completion_tokens ?? 500,
+							'prompt_version'    => $o->prompt_version ?? null,
+							'agent_role'        => $o->agent_role ?? '',
 						];
 					}
 				}