fix: multisite issues

[imantsk]

Fixes #311 #317

Summary

• Fixes Multisite “Menu Settings → Snippets” not restricting subsite access by enforcing the network capability when the subsite Snippets menu is disabled (src/php/class-plugin.php).
• Fixes trashed network snippets executing on Multisite by ensuring active = -1 (trashed) never qualifies as executable when building the active-snippet list (src/php/class-db.php, src/php/flat-files/classes/class-snippet-files.php).
• Fixes file-based execution “Cannot redeclare …” collisions in Network Admin by ensuring the “local site” flat-file index uses the site table (not the network table) so the same network snippet isn’t loaded twice (src/php/flat-files/classes/class-snippet-files.php).

Testing

#317 (trashed network snippets executing / file-based collision)

1. On Multisite, create a Network snippet using the issue’s “green banner” code and Save and Activate → banner appears.

add_action('wp_footer', 'snippet_active_banner');
add_action('admin_footer', 'snippet_active_banner');
function snippet_active_banner() {
    echo '<div style="position:fixed;bottom:0;left:0;right:0;background:#4caf50;color:#fff;text-align:center;padding:10px;font-weight:600;z-index:999999;">✓ This Code Snippet is active!</div>';
}

2. Deactivate → banner disappears.
3. Trash the snippet (inactive) → banner stays gone; confirm it does not execute while in Trash.
4. Restore → snippet returns as inactive; banner still gone until re-activated.
5. Repeat steps 1–3 but trash while active → banner stops immediately.
6. Enable file-based execution, repeat steps 1–5, and confirm no fatal Cannot redeclare ... occurs.

#311 (Menu Settings restriction)

1. Network Admin → Settings → Network Settings → Menu Settings: uncheck Snippets, save.
2. Log in as a regular subsite admin → Snippets menu is hidden.
3. Direct URL check as subsite admin: wp-admin/admin.php?page=snippets / wp-admin/admin.php?page=add-snippet should be blocked.
4. Re-check Snippets in Menu Settings → subsite admin can see/access Snippets again.

[code-snippets-bot]

Download and install

📦 code-snippets.3.9.3.zip