Saleculator Webin 3.6 - Waiter integration testing package

Use with Saleculator Waiter 1.2.0 (build 4). Webin source: e403f8539aad1e1280e97c5c4eb7813657ba8c6b.
Requires the matching Saleculator POS/PDA waiter order importer changes.
This is a support-assisted testing package, not a one-click installer.

New installation:
1. Extract webin into the intended PHP web-server directory. Enable mysqli
   and the PHP extensions required by your existing Webin installation.
2. Copy application/config/database.example.php to database.php and enter
   your local MySQL connection settings. No database credentials are supplied.
3. Copy application/config/config.example.php to config.php. Set base_url
   to your Webin URL, including its deployment subdirectory and trailing slash.
   Configure a private writable PHP session directory and encryption key.
4. Use CI_ENV=production and configure the server's front-controller routing.
   Apache installations can use the included .htaccess with mod_rewrite.
5. Deny web access to application/ and system/. Keep waiter session/recovery
   state outside the web root, with write access only for the PHP service.
   Back up the database and private .saleculator-waiter state together.
6. Point Waiter at this Webin root and complete activation and PIN sign-in.

Existing installation:
Back up code, database, configuration and private waiter state first. Preserve
the deployed database.php and config.php, logs, cache and private state.
The package supplies example configuration names to avoid overwriting those
two deployment-specific files. Review other site customizations before copying.
This waiter integration does not require a new database schema migration.
Do not execute bundled historical SQL scripts as an automatic upgrade.

Waiter 1.2.0:
Android 7 or newer. This APK uses the local debug signing certificate and is
provided for testing. Fresh activation/setup and sign-in are required; older
local saved data is not migrated. A differently signed installed app cannot
be replaced in place by this APK. Preserve outstanding orders before changing
an existing installation. Production signing and physical acceptance remain
pending. Request Bill hands an order to the cashier; it does not record payment.
Test both POS/PDA import, role permissions, real printers, cancellations and
interrupted connections before restaurant rollout.

The proposed Waiter.Print.Bill / Waiter.Print.KOT template resources and the
new device printer-profile workflow are pending and are not included here.