feat: Article Dossier page + metabox dossier link + board deeplinks (v0.19.2)

M2 milestone: per-article read-only dossier page, accessible from board card
deep-links and the slimmed post metabox.

## New admin page
- class-dossier-page.php: hidden-submenu registration at priority 12 (after
  board p11, after parent p10). Secured by manage_options + nonce. Static
  url_for_post() provides canonical deep-link.
- class-dossier-data-assembler.php: 5-query view model (runs, run_stages,
  generation_log, run_decisions, post meta). No N+1. Legacy graceful state:
  posts with no run record return has_run=false.
- class-dossier-gen-log-query.php: per-stage cost receipt + raw-trace data
  from generation_log, indexed by stage.

## Templates
- dossier-page.php: two-column layout (stage sections + sidebar with cost
  receipt). Verdict pills. Editorial decisions section.
- dossier-stage-section.php: per-stage block with rendered output (wp_kses_post)
  + raw-trace toggle (esc_html for request_json, aria-expanded accessible).
- metabox-dossier-link.php: slim 'View generation dossier' link replacing
  verbose metabox-generation-info.php.

## Assets
- dossier.css: warm editorial palette, verdict pills, cost receipt, toggle.
- dossier.js: vanilla JS raw-trace toggle (DOMContentLoaded, aria-expanded).
- board.js: dossier click_action handler before review handler.

## Tests
- DossierMenuRegistrationTest.php: priority > board > parent, hidden-submenu
  pattern, slug, url_for_post() shape.
- DossierDataAssemblerTest.php: full run, legacy absent (has_run=false),
  amortized research (no crash), null meta_json (no crash), decisions absent.

## Bindings satisfied
1. split-class-prautoblogger: DONE (prior commit)
2. Menu ordering: dossier p12 > board p11 > parent p10
3. peptide-e2e smoke: PR 2 (separate repo, this milestone)
4. Raw-trace redaction: request_json via esc_html(), output via wp_kses_post()
5. Legacy graceful: has_run=false path, no notices/fatals
6. v0.19.2 + CHANGELOG + ARCHITECTURE.md in this commit; phpcbf run clean

Agent-Session: claude-sonnet-4-6

includes/admin/class-board-data-provider.php

@@ -13,15 +13,19 @@ declare(strict_types=1);
  * PRAutoBlogger_Board_Gen_Log_Query. WP_Query columns (In Review, Published)
  * are handled here.
  *
+ * M2: cards now include `dossier_url` so board.js can deep-link to the
+ * Article Dossier instead of the old per-column destinations.
+ *
  * No schema changes -- all data comes from tables that already exist.
  *
  * Triggered by: PRAutoBlogger_Board_Page::on_ajax_board_status().
- * Dependencies: PRAutoBlogger_Board_Gen_Log_Query, WordPress WP_Query, get_option().
+ * Dependencies: PRAutoBlogger_Board_Gen_Log_Query, PRAutoBlogger_Dossier_Page,
+ *               WordPress WP_Query, get_option().
  *
- * @see admin/class-board-gen-log-query.php -- Raw generation-log queries (Generating/Failed).
+ * @see admin/class-board-gen-log-query.php -- Raw gen_log queries (Generating/Failed).
  * @see admin/class-board-page.php          -- Calls get_board_snapshot().
- * @see core/class-cost-reporter.php        -- Parallel cost-query pattern.
- * @see ARCHITECTURE.md                     -- Database schema (generation_log, post meta).
+ * @see admin/class-dossier-page.php        -- Provides url_for_post() for deep-links.
+ * @see ARCHITECTURE.md                     -- Database schema.
  */
 class PRAutoBlogger_Board_Data_Provider {
 
@@ -38,9 +42,6 @@ class PRAutoBlogger_Board_Data_Provider {
 	/**
 	 * Return the full board snapshot consumed by the AJAX poller.
 	 *
-	 * Each column is an array of card objects. Cards contain only the data
-	 * needed to render the board card and provide click-throughs.
-	 *
 	 * @return array{
 	 *   generating: array<int, array<string, mixed>>,
 	 *   in_review:  array<int, array<string, mixed>>,
@@ -66,7 +67,6 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for runs that are currently in-progress.
-	 * Delegates to PRAutoBlogger_Board_Gen_Log_Query.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -76,7 +76,6 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for generation runs that ended in an error state.
-	 * Delegates to PRAutoBlogger_Board_Gen_Log_Query.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -86,6 +85,7 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for generated draft posts awaiting human review.
+	 * M2: cards include dossier_url for deep-linking.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -120,7 +120,8 @@ class PRAutoBlogger_Board_Data_Provider {
 				'title'        => $post->post_title,
 				'cost_total'   => $cost_total,
 				'created_at'   => strtotime( $post->post_date_gmt ),
-				'click_action' => 'review',
+				'click_action' => 'dossier',
+				'dossier_url'  => PRAutoBlogger_Dossier_Page::url_for_post( $post->ID ),
 				'review_url'   => admin_url( 'admin.php?page=prautoblogger-review-queue' ),
 				'edit_url'     => get_edit_post_link( $post->ID, 'raw' ),
 			);
@@ -131,6 +132,7 @@ class PRAutoBlogger_Board_Data_Provider {
 
 	/**
 	 * Cards for published posts within the configured window.
+	 * M2: cards include dossier_url for deep-linking.
 	 *
 	 * @return array<int, array<string, mixed>>
 	 */
@@ -174,7 +176,8 @@ class PRAutoBlogger_Board_Data_Provider {
 				'title'        => $post->post_title,
 				'cost_total'   => $cost_total,
 				'published_at' => strtotime( $post->post_date_gmt ),
-				'click_action' => 'edit',
+				'click_action' => 'dossier',
+				'dossier_url'  => PRAutoBlogger_Dossier_Page::url_for_post( $post->ID ),
 				'edit_url'     => get_edit_post_link( $post->ID, 'raw' ),
 				'post_url'     => get_permalink( $post->ID ),
 			);