Replace the separate /admin/status.php and /admin/logs.php pages with a
single /admin/system.php page organised around a tab bar.
- system.php — top-level tab bar: 'Statut' + one tab per log file
(nginx accès, nginx erreurs, PHP-FPM). Switching tabs is a plain
href (?tab=…) so no JS required for navigation; the lines-selector
SELECT triggers a location change on 'change' for instant reload
without a submit button.
- Status tab preserves all existing service cards, PHP runtime grid,
and disk-usage bar from the old status.php.
- Log tabs preserve line-count selector, file metadata bar, and
per-line colour coding from the old logs.php.
- New: copy-to-clipboard button on each log output block (Clipboard
API with textarea execCommand fallback).
- status.php / logs.php replaced with 301 redirect stubs so existing
bookmarks and links keep working.
- templates/admin/head.php: 'Statut' + 'Journaux' nav items replaced
with a single 'Système' item; active state covers all three page
names for redirect compatibility.
- public/admin/logs.php: new page tailing nginx error/access + PHP-FPM logs.
Selector for log file and line count (50/100/200/500, default 100).
Lines reversed (newest first), colour-coded by severity, numbered gutter.
Graceful degradation when exec() unavailable or file unreadable (dev msg).
- templates/admin/head.php: 'Journaux' nav link added after 'Statut'.
- public/admin/status.php: remove curl_close() call deprecated in PHP 8.5
(no-op since PHP 8.0); replace with unset($ch) to silence the warning
that was leaking raw text above the page output.
New page /admin/status.php gives a real-time health dashboard:
- Services panel: nginx (systemctl), php-fpm (auto-detects versioned unit names),
site HTTP ping (curl HEAD with latency), SQLite DB (exists/writable/row count/size),
storage directory (writable, banner/cover file counts), maintenance-mode flag.
- PHP runtime panel: version, SAPI, memory_limit, upload_max_filesize, post_max_size,
max_execution_time.
- Disk usage bar for the partition containing APP_ROOT (colour-coded: green/amber/red).
- All shell calls go through safeExec() which suppresses stderr and checks exit code;
systemctl/curl unavailability degrades gracefully to 'unknown' without fatal errors.
- 'Statut' nav link added to templates/admin/head.php (active state on status.php).
