peptide-geo-monitor v0.1.0: internal AI-visibility dashboard (#1)

New internal plugin: weekly LLM probes of core peptides (Perplexity sonar + GPT/Gemini-search via OpenRouter/CF gateway) -> custom table -> wp-admin trendline + standings. Provider interface + cost ledger w/ hard $5/mo cap + collector/panel seam (AI-visibility only). v1 = AI-visibility only.

QA: APPROVE-WITH-P2-NOTES — qa-reviews/peptide-geo-monitor/2026-06-13-f488f4a966cbb9e771d3abc20daee3fa49074520.md (P2 follow-ups: ltrim www display bug, PHPCS mandatory, dead cache)

Agent-Session: geomonitor v0.1.0 merge

includes/panel/interface-pgm-dashboard-panel.php

@@ -0,0 +1,38 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * Seam: contract for all GEO-monitor dashboard panels.
+ *
+ * Each panel renders one data category within the GEO Monitor admin page.
+ * v1 ships only PGM_Ai_Visibility_Panel. Future panels (keyword rankings,
+ * schema coverage…) implement this and register with PGM_Collector_Registry.
+ *
+ * Who triggers: PGM_Admin_Page when building the GEO Monitor page.
+ * Dependencies: None — pure interface.
+ *
+ * @see class-pgm-ai-visibility-panel.php  — v1 implementation.
+ * @see class-pgm-collector-registry.php   — Registration hub.
+ * @see ARCHITECTURE.md                    — §Collector/Panel seam.
+ * @package PeptideGeoMonitor
+ */
+interface PGM_Dashboard_Panel {
+
+	/**
+	 * Render the panel HTML into the current output buffer.
+	 *
+	 * Implementors MUST escape all output and MUST NOT echo raw DB values.
+	 *
+	 * @param array<string, mixed> $data Payload returned by the matching collector.
+	 *
+	 * @return void
+	 */
+	public function render( array $data ): void;
+
+	/**
+	 * Short human-readable title for the panel tab / section heading.
+	 *
+	 * @return string
+	 */
+	public function get_title(): string;
+}