PR Vision v0.1.1: rename from peptide-geo-monitor + P2 fixes

- Exhaustive rename: PGM_ -> PRV_, pgm_ -> prv_, text domain and
  slug peptide-geo-monitor -> pr-vision, admin menu GEO Monitor ->
  PR Vision, main file peptide-geo-monitor.php -> pr-vision.php,
  DB table pgm_ai_visibility -> prv_ai_visibility.
- P2-A: replace ltrim($host,'www.') character-mask with
  str_starts_with/substr prefix strip in PRV_Citation_Detector.
  Adds test coverage for wikipedia.org, webmd.com survival.
- P2-B: drop continue-on-error: true from PHPCS CI step;
  WordPress Coding Standards now gates the build.
- P2-C: remove dead in-run cache from PRV_Probe_Runner::run();
  each (peptide, intent, model) triplet is visited once per run,
  cache hit is structurally impossible.
- Version bump 0.1.0 -> 0.1.1 + CHANGELOG [0.1.1] entry.

Agent-Session: pr-vision rename v0.1.1

includes/core/class-prv-config.php

@@ -0,0 +1,129 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * Configuration helper: seed defaults and retrieve plugin settings.
+ *
+ * All mutable settings live in wp_options under the prv_ prefix. This class
+ * provides typed getters (no magic values in call sites) and seeds the initial
+ * defaults on first activation.
+ *
+ * Who triggers: PRV_Activator::activate() for seeding; every component that
+ *               needs a setting reads through here.
+ * Dependencies: get_option(), update_option().
+ *
+ * @see CONTEXT.md          — Domain glossary: peptides, prompt intents, models.
+ * @see ARCHITECTURE.md     — §Config (options + defaults).
+ * @package PrVision
+ */
+class PRV_Config {
+
+	/**
+	 * Seed the default option values on first activation.
+	 *
+	 * Uses add_option() so existing values are never overwritten on re-activation.
+	 *
+	 * Side effects: Writes multiple wp_options rows on first run.
+	 *
+	 * @return void
+	 */
+	public static function seed_defaults(): void {
+		add_option( 'prv_monthly_budget_usd', PRV_DEFAULT_MONTHLY_BUDGET_USD );
+		add_option( 'prv_peptides', self::default_peptides() );
+		add_option( 'prv_prompt_intents', self::default_prompt_intents() );
+		add_option( 'prv_models', self::default_models() );
+	}
+
+	/**
+	 * Get the monthly budget cap in USD.
+	 *
+	 * @return float Positive float; falls back to the plugin default.
+	 */
+	public static function get_monthly_budget_usd(): float {
+		$val = (float) get_option( 'prv_monthly_budget_usd', PRV_DEFAULT_MONTHLY_BUDGET_USD );
+		return $val > 0.0 ? $val : PRV_DEFAULT_MONTHLY_BUDGET_USD;
+	}
+
+	/**
+	 * Get the list of peptide slugs/labels to probe.
+	 *
+	 * Each element is an associative array with 'slug' and 'label' keys.
+	 *
+	 * @return array<int, array{slug: string, label: string}>
+	 */
+	public static function get_peptides(): array {
+		$raw = get_option( 'prv_peptides', self::default_peptides() );
+		return is_array( $raw ) ? $raw : self::default_peptides();
+	}
+
+	/**
+	 * Get the prompt intent templates.
+	 *
+	 * Each string may contain {peptide} as a placeholder.
+	 *
+	 * @return array<int, string>
+	 */
+	public static function get_prompt_intents(): array {
+		$raw = get_option( 'prv_prompt_intents', self::default_prompt_intents() );
+		return is_array( $raw ) ? $raw : self::default_prompt_intents();
+	}
+
+	/**
+	 * Get the model identifiers to probe with.
+	 *
+	 * @return array<int, string>
+	 */
+	public static function get_models(): array {
+		$raw = get_option( 'prv_models', self::default_models() );
+		return is_array( $raw ) ? $raw : self::default_models();
+	}
+
+	/**
+	 * Default set of ~12 high-interest peptides (slug + human-readable label).
+	 *
+	 * @return array<int, array{slug: string, label: string}>
+	 */
+	private static function default_peptides(): array {
+		return array(
+			array( 'slug' => 'bpc-157', 'label' => 'BPC-157' ),
+			array( 'slug' => 'tb-500', 'label' => 'TB-500' ),
+			array( 'slug' => 'mk-677', 'label' => 'MK-677' ),
+			array( 'slug' => 'cjc-1295', 'label' => 'CJC-1295' ),
+			array( 'slug' => 'ghrp-6', 'label' => 'GHRP-6' ),
+			array( 'slug' => 'ipamorelin', 'label' => 'Ipamorelin' ),
+			array( 'slug' => 'semaglutide', 'label' => 'Semaglutide' ),
+			array( 'slug' => 'tirzepatide', 'label' => 'Tirzepatide' ),
+			array( 'slug' => 'selank', 'label' => 'Selank' ),
+			array( 'slug' => 'semax', 'label' => 'Semax' ),
+			array( 'slug' => 'nad-plus', 'label' => 'NAD+' ),
+			array( 'slug' => 'aod-9604', 'label' => 'AOD-9604' ),
+		);
+	}
+
+	/**
+	 * Default prompt intent templates — three query styles per peptide.
+	 *
+	 * @return array<int, string>
+	 */
+	private static function default_prompt_intents(): array {
+		return array(
+			'what is {peptide}',
+			'{peptide} benefits and dosage',
+			'{peptide} reconstitution guide',
+		);
+	}
+
+	/**
+	 * Default models: Perplexity sonar (primary citation signal) + two
+	 * OpenRouter-routed search-capable models for breadth.
+	 *
+	 * @return array<int, string>
+	 */
+	private static function default_models(): array {
+		return array(
+			'perplexity/sonar',
+			'openai/gpt-4o-search-preview',
+			'google/gemini-2.0-flash-001',
+		);
+	}
+}