Fix install + admin bugs reported in issue #169

Addresses the five bugs found on master (6e139a1b) during a fresh
Docker install and admin testing:

1. Missing `details` column in gold_fin_log (HTTP 500 on finishing
   construction with gold, buying Gold Club, admin giving gold):
   - Add `details varchar(255)` to the gold_fin_log schema, matching
     every INSERT and the a2b2.php reader that already use it.
   - Fix the broken positional INSERT in Logging::goldFinLog() (it sent
     3 values for a 7-column table) which 500'd on the same gold path.

2. Admin "View Player Info" fatal error: `<? php` -> `<?php` in
   Admin/Templates/playerinfo.tpl.

3. "Reset Server" leaving the DB corrupted (Duplicate key name
   'idx_ft_bonus_xy'): move the croppers indexes inline into the
   CREATE TABLE IF NOT EXISTS so structure recreation is idempotent,
   and add `croppers` to the reset truncate list.

4. Install wizard crash on failed DB connection (mysqli_error(false)):
   use mysqli_connect_error() and show a friendly, actionable message
   (incl. the Docker "db" hostname hint).

5. PHP exposing errors/stack traces to end users: ship a production
   php.ini baseline + docker/php/zz-travianz.ini that turns off
   display_errors and logs to stderr instead.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Admin/Templates/playerinfo.tpl

@@ -1,4 +1,4 @@
-<? php
+<?php
 
 #################################################################################
 ##              -= YOU MAY NOT REMOVE OR CHANGE THIS NOTICE =-                 ##

Admin/Templates/resetServer.php

@@ -41,7 +41,7 @@ if($keepAdmin){
 // 2. Golim tot - fără FK checks
 mysqli_query($GLOBALS["link"], "SET FOREIGN_KEY_CHECKS=0");
 
-$tables = ["a2b","abdata","activate","active","admin_log","alidata","ali_invite","ali_log","ali_permission","allimedal","artefacts","attacks","banlist","bdata","build_log","chat","deleting","demolition","diplomacy","enforcement","farmlist","fdata","forum_cat","forum_edit","forum_post","forum_survey","forum_topic","general","gold_fin_log","hero","illegal_log","links","login_log","market","market_log","mdata","medal","movement","ndata","online","odata","password","prisoners","raidlist","research","route","send","tdata","tech_log","training","units","vdata","wdata","ww_attacks","users"];
+$tables = ["a2b","abdata","activate","active","admin_log","alidata","ali_invite","ali_log","ali_permission","allimedal","artefacts","attacks","banlist","bdata","build_log","chat","deleting","demolition","diplomacy","enforcement","farmlist","fdata","forum_cat","forum_edit","forum_post","forum_survey","forum_topic","general","gold_fin_log","hero","illegal_log","links","login_log","market","market_log","mdata","medal","movement","ndata","online","odata","password","prisoners","raidlist","research","route","send","tdata","tech_log","training","units","vdata","wdata","ww_attacks","croppers","users"];
 
 foreach($tables as $t){
     mysqli_query($GLOBALS["link"], "TRUNCATE TABLE `".TB_PREFIX.$t."`");

Dockerfile

@@ -23,6 +23,11 @@ RUN docker-php-ext-configure gd --with-freetype --with-jpeg \
 # Enable Apache modules
 RUN a2enmod rewrite headers
 
+# Use the production PHP configuration as a baseline, then apply our overrides
+# so that errors are hidden from end users and logged server-side instead.
+RUN cp "$PHP_INI_DIR/php.ini-production" "$PHP_INI_DIR/php.ini"
+COPY docker/php/zz-travianz.ini "$PHP_INI_DIR/conf.d/zz-travianz.ini"
+
 # Set working directory
 WORKDIR /var/www/html
 

GameEngine/Database.php

@@ -462,7 +462,16 @@ class MYSQLi_DB implements IDbConnection {
 	    $this->dbname   = $dbname;
 
 	    // connect to the DB
-	    if (!$this->connect()) die(mysqli_error($this->dblink));
+	    if (!$this->connect()) {
+	        // $this->dblink is FALSE here, so we cannot call mysqli_error() on it.
+	        // Use mysqli_connect_error() and show a friendly, actionable message.
+	        $error = mysqli_connect_error();
+	        die("Database connection failed: " . htmlspecialchars(
+	            $error !== null && $error !== ''
+	                ? $error
+	                : 'could not connect to the database server. Please check the host, port and credentials. (When running with Docker, the database host is usually "db", not "localhost".)'
+	        ));
+	    }
 
 		// we will operate in UTF8
 		mysqli_query($this->dblink,"SET NAMES 'UTF8'");

GameEngine/Logging.php

@@ -110,7 +110,7 @@ class Logging {
 			$log = "Finish construction and research with gold";
 			list($log) = $database->escape_input($log);
 
-			$q = "Insert into " . TB_PREFIX . "gold_fin_log values (0,$wid,'$log')";
+			$q = "INSERT INTO " . TB_PREFIX . "gold_fin_log (wid, action, time, details) VALUES ($wid, 'Finish all constructions', " . time() . ", '$log')";
 			$database->query($q);
 		}
 	}

docker/php/zz-travianz.ini

@@ -0,0 +1,11 @@
+; TravianZ production PHP settings
+; -----------------------------------------------------------------------------
+; Do NOT show PHP errors, warnings or stack traces to end users. Leaking server
+; paths and internal structure is both a security risk and makes the game look
+; unstable. Errors are still logged server-side (visible via `docker logs`).
+display_errors = Off
+display_startup_errors = Off
+log_errors = On
+error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT & ~E_NOTICE & ~E_WARNING
+; Send the error log to the container's stderr so it shows up in `docker logs web`.
+error_log = /dev/stderr

var/db/struct.sql

@@ -905,6 +905,7 @@ CREATE TABLE IF NOT EXISTS `%PREFIX%gold_fin_log` (
   gold int(11) NOT NULL DEFAULT 0,
   time int(11) NOT NULL DEFAULT 0,
   log varchar(255) DEFAULT NULL,
+  details varchar(255) DEFAULT NULL,
   PRIMARY KEY (id),
   KEY uid (uid),
   KEY time (time)
@@ -1776,13 +1777,12 @@ CREATE TABLE IF NOT EXISTS %PREFIX%croppers (
 	fieldtype TINYINT UNSIGNED NOT NULL, -- 1 = 9c, 6 = 15c
 	best_oasis_bonus TINYINT UNSIGNED NOT NULL, -- 0,25,50,75,100,125,150
 	updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
-	CHECK (best_oasis_bonus IN (0,25,50,75,100,125,150))
+	CHECK (best_oasis_bonus IN (0,25,50,75,100,125,150)),
+	KEY idx_ft_bonus_xy (fieldtype, best_oasis_bonus, x, y),
+	KEY idx_xy (x, y),
+	KEY idx_bonus (best_oasis_bonus)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-CREATE INDEX idx_ft_bonus_xy ON %PREFIX%croppers (fieldtype, best_oasis_bonus, x, y);
-CREATE INDEX idx_xy ON %PREFIX%croppers (x, y);
-CREATE INDEX idx_bonus ON %PREFIX%croppers (best_oasis_bonus);
-
 --
 -- Dumping data for table `%prefix%croppers`
 --