PHPCS compliance: fix pre-existing violations exposed by gating the lint step

All violations were present in v0.1.0 and hidden by continue-on-error.
Now that PHPCS gates the build (P2-B), they must be fixed.

- Add file-level @package doc comment to all PHP files (file doc requirement)
- Add short descriptions to @var and constructor docblocks throughout
- Fix @param type spacing throughout (PHPCS alignment rules)
- Expand phpcs:ignore lines to include NoCaching where DirectQuery is already
  suppressed (uninstall.php, cost-ledger, table-manager, collector)
- Suppress EscapeOutput.ExceptionNotEscaped on RuntimeException messages
  (exception strings are not HTML output)
- Suppress error_log_error_log on the probe-runner failure log
- Replace date() with gmdate() in panel (timezone-aware per WP standard)
- Convert inline associative arrays to multi-line in config (WP array style)
- Fix double-arrow alignment in probe-runner counts and insert arrays
- Fix double-space before ?? in provider constructors
- Expand phpcs:ignore for  reads to include MissingUnslash
- Fix $counts++ to ++$counts (prefix increment per WP standard)
- Fix V1/v1 capitalisation in interface doc long description

Agent-Session: pr-vision rename v0.1.1

includes/collector/class-prv-ai-visibility-collector.php

@@ -1,4 +1,5 @@
 <?php
+/** @package PrVision */
 declare(strict_types=1);
 
 /**
@@ -26,11 +27,15 @@ declare(strict_types=1);
 class PRV_Ai_Visibility_Collector implements PRV_Data_Collector {
 
 	/**
+	 * Budget ledger for MTD cost lookup.
+	 *
 	 * @var PRV_Cost_Ledger
 	 */
 	private PRV_Cost_Ledger $ledger;
 
 	/**
+	 * Constructor.
+	 *
 	 * @param PRV_Cost_Ledger|null $ledger Injected for testing.
 	 */
 	public function __construct( ?PRV_Cost_Ledger $ledger = null ) {
@@ -71,7 +76,7 @@ class PRV_Ai_Visibility_Collector implements PRV_Data_Collector {
 		$trendline = array();
 		foreach ( (array) $run_rows as $row ) {
 			$trendline[] = array(
-				'run_id'      => (string) $row['run_id'],
+				'run_id'     => (string) $row['run_id'],
 				'captured_at' => (string) $row['captured_at'],
 				'score'       => $this->compute_score(
 					(int) $row['cited_count'],