feat(phase2b): P2b.1 — Research_Fanout + Research_Judge (curate stage) (#178, v0.28.0)

Additive: parallel research fan-out (curl_multi, quorum, cost-reserve-before-dispatch) + curate judge (dedup/score/run_sources). Live Economy path untouched; Authority activates at P2b.4. QA APPROVE-WITH-P2 685c40b; CI green (PHPUnit verified on VPS runner).

Agent-Session: prab-phase2b-1-merge

includes/core/class-research-source-scorer.php

@@ -0,0 +1,82 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * phpcs:ignore WordPress.Files.FileName.InvalidClassFileName -- class naming convention differs from WordPress standard
+ *
+ * Source authority scorer for the Authority pipeline curate stage.
+ *
+ * What: Computes a quality_score for each research source by multiplying
+ *       its agent-assigned relevance by a source-type authority weight
+ *       derived from the URL scheme and hostname. Weight tiers:
+ *       peer-reviewed (DOI/PubMed/NCBI → 1.0), institutional (.gov /
+ *       .edu / WHO / FDA → 0.85), preprint (medRxiv/bioRxiv → 0.70),
+ *       general HTTPS (→ 0.60), HTTP or missing (→ 0.40).
+ * Who triggers it: PRAutoBlogger_Research_Judge (curate stage) only.
+ *       Not wired into the Economy path.
+ * Dependencies: none — pure computation.
+ *
+ * @see core/class-research-judge.php — Sole consumer.
+ * @see ARCHITECTURE.md              — Phase 2b curate stage.
+ */
+class PRAutoBlogger_Research_Source_Scorer {
+
+	/**
+	 * Add a quality_score field to a source array in place.
+	 *
+	 * @param array{url: string, title: string, excerpt: string, relevance: float, agent_role: string} $source Source from a research agent.
+	 * @return array{url: string, title: string, excerpt: string, relevance: float, agent_role: string, quality_score: float} Source with quality_score added.
+	 *
+	 * Side effects: none.
+	 */
+	public function score( array $source ): array {
+		$source['quality_score'] = round(
+			$source['relevance'] * $this->weight( $source['url'] ?? '' ),
+			4
+		);
+		return $source;
+	}
+
+	// ── Private helpers ─────────────────────────────────────────────────
+
+	/**
+	 * Authority weight for a source URL.
+	 *
+	 * @param string $url Source URL.
+	 * @return float Weight in [0.40, 1.0].
+	 */
+	private function weight( string $url ): float {
+		$u = strtolower( $url );
+
+		if (
+			false !== strpos( $u, 'doi.org' ) ||
+			false !== strpos( $u, 'pubmed.ncbi' ) ||
+			false !== strpos( $u, 'ncbi.nlm.nih' )
+		) {
+			return 1.0;
+		}
+
+		if (
+			false !== strpos( $u, '.gov' ) ||
+			false !== strpos( $u, '.edu' ) ||
+			false !== strpos( $u, 'who.int' ) ||
+			false !== strpos( $u, 'fda.gov' )
+		) {
+			return 0.85;
+		}
+
+		if (
+			false !== strpos( $u, 'medrxiv' ) ||
+			false !== strpos( $u, 'biorxiv' ) ||
+			false !== strpos( $u, 'preprint' )
+		) {
+			return 0.70;
+		}
+
+		if ( 0 === strpos( $u, 'https://' ) ) {
+			return 0.60;
+		}
+
+		return 0.40;
+	}
+}