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-table-manager.php

@@ -0,0 +1,94 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * Database table creation and schema versioning for PR Vision.
+ *
+ * Creates {prefix}prv_ai_visibility via dbDelta (idempotent). Tracks the
+ * schema version in the prv_schema_version option so future migrations can
+ * detect when an upgrade is needed without destructive ALTER TABLE.
+ *
+ * Who triggers: PRV_Activator::activate() on plugin activation.
+ * Dependencies: $wpdb global, dbDelta() (requires upgrade.php).
+ *
+ * @see class-prv-activator.php — Calls create_table() on activation.
+ * @see ARCHITECTURE.md         — §Storage.
+ * @package PrVision
+ */
+class PRV_Table_Manager {
+
+	/**
+	 * Name of the custom table (without $wpdb->prefix).
+	 */
+	const TABLE_BASE = 'prv_ai_visibility';
+
+	/**
+	 * Create or upgrade the AI-visibility table.
+	 *
+	 * Uses dbDelta to create or non-destructively alter the table.
+	 * Records the schema version in an option afterwards.
+	 *
+	 * Side effects: Writes to the database; sets prv_schema_version option.
+	 *
+	 * @return void
+	 */
+	public static function create_table(): void {
+		global $wpdb;
+
+		$table_name      = $wpdb->prefix . self::TABLE_BASE;
+		$charset_collate = $wpdb->get_charset_collate();
+
+		$sql = "CREATE TABLE {$table_name} (
+			id          BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
+			run_id      VARCHAR(36)         NOT NULL,
+			captured_at DATETIME            NOT NULL,
+			peptide_slug   VARCHAR(200)     NOT NULL,
+			peptide_label  VARCHAR(200)     NOT NULL,
+			model          VARCHAR(200)     NOT NULL,
+			prompt_intent  VARCHAR(200)     NOT NULL,
+			cited          TINYINT(1)       NOT NULL DEFAULT 0,
+			our_position   INT(11)          NULL     DEFAULT NULL,
+			source_domains LONGTEXT         NOT NULL DEFAULT '',
+			raw_excerpt    LONGTEXT         NOT NULL DEFAULT '',
+			cost_usd       DECIMAL(12,8)    NOT NULL DEFAULT 0.00000000,
+			PRIMARY KEY (id),
+			KEY run_id (run_id),
+			KEY peptide_slug (peptide_slug),
+			KEY captured_at (captured_at)
+		) {$charset_collate};";
+
+		if ( ! function_exists( 'dbDelta' ) ) {
+			require_once ABSPATH . 'wp-admin/includes/upgrade.php';
+		}
+
+		dbDelta( $sql );
+
+		update_option( 'prv_schema_version', PRV_SCHEMA_VERSION );
+	}
+
+	/**
+	 * Get the full table name including the WP prefix.
+	 *
+	 * @return string
+	 */
+	public static function get_table_name(): string {
+		global $wpdb;
+		return $wpdb->prefix . self::TABLE_BASE;
+	}
+
+	/**
+	 * Drop the AI-visibility table entirely.
+	 *
+	 * Called only from uninstall.php — never during normal deactivation.
+	 *
+	 * Side effects: Permanently destroys all probe data.
+	 *
+	 * @return void
+	 */
+	public static function drop_table(): void {
+		global $wpdb;
+		$table = $wpdb->prefix . self::TABLE_BASE;
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.SchemaChange, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
+		$wpdb->query( "DROP TABLE IF EXISTS {$table}" );
+	}
+}