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/core/class-prv-cost-ledger.php

@@ -1,4 +1,5 @@
 <?php
+/** @package PrVision */
 declare(strict_types=1);
 
 /**
@@ -60,8 +61,8 @@ class PRV_Cost_Ledger {
 	 * @return bool True when the call can proceed within budget.
 	 */
 	public function can_afford( float $estimated_cost_usd ): bool {
-		$cap    = PRV_Config::get_monthly_budget_usd();
-		$spent  = $this->get_month_to_date_usd();
+		$cap   = PRV_Config::get_monthly_budget_usd();
+		$spent = $this->get_month_to_date_usd();
 		return ( $spent + $estimated_cost_usd ) <= $cap;
 	}
 
@@ -95,7 +96,7 @@ class PRV_Cost_Ledger {
 
 		$table = PRV_Table_Manager::get_table_name();
 
-		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
+		// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery, WordPress.DB.DirectDatabaseQuery.NoCaching
 		$result = $wpdb->update(
 			$table,
 			array( 'cost_usd' => number_format( $cost_usd, 8, '.', '' ) ),