Bundle Twilio + AWS SDKs in releases, add SNS install path

Gitea release workflow now runs composer install --no-dev before zipping, so
each release ships vendor/ with both Twilio and AWS SDKs. The plugin's loader
priority is flipped to match: internal vendor/autoload.php first (always
current after every plugin update), external wp-content/twilio-sdk/ second
(legacy/manual install fallback).

AWS SDK detection wired in alongside Twilio: composer's bundled autoloader
covers Aws\… natively when present; otherwise plugin falls back to a new
external location wp-content/aws-sdk/ via install-aws-sdk-external.sh, which
drops the AWS SDK PHAR with a tiny autoload shim. AWS-missing admin notice
fires only when twp_sms_provider === 'aws_sns' so existing Twilio SMS users
see no new noise.

Loader priority flip applied in three places that all had the same
external-first pattern: twilio-wp-plugin.php (twp_check_sdk_installation),
class-twp-twilio-api.php (init_sdk_client), class-twp-webhooks.php
(constructor). twp_check_sdk_after_update messaging updated to reflect that
plugin updates now bundle the SDK.

Files:
  .gitea/workflows/release.yml      — composer install before ZIP
  twilio-wp-plugin.php              — TWP_EXTERNAL_AWS_SDK_DIR, dual-SDK
                                      detection, twp_aws_sdk_missing_notice
  includes/class-twp-twilio-api.php — internal-first autoloader
  includes/class-twp-webhooks.php   — internal-first autoloader
  install-aws-sdk-external.sh       — new AWS SDK PHAR installer

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

install-aws-sdk-external.sh

@@ -0,0 +1,121 @@
+#!/bin/bash
+
+# Script to install AWS SDK for PHP to an external location
+# This prevents SDK from being deleted when WordPress updates the plugin
+#
+# Location: wp-content/aws-sdk/ (outside plugin folder)
+#
+# Uses the official single-file PHAR distribution from aws/aws-sdk-php releases.
+# The PHAR ships its own composer-generated autoloader, so no PSR-4 wiring needed.
+
+echo "Installing AWS SDK for PHP (latest) to external location..."
+echo "This will install the SDK outside the plugin folder to survive plugin updates."
+
+# Check if we can download files
+if ! command -v curl &> /dev/null; then
+    echo "ERROR: curl is required to download the SDK"
+    echo "Please install curl and try again"
+    exit 1
+fi
+
+# Get the script directory (plugin directory)
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# Calculate wp-content directory (two levels up from plugin)
+# Plugin is at: wp-content/plugins/twilio-wp-plugin/
+# We want: wp-content/aws-sdk/
+WP_CONTENT_DIR="$(dirname "$(dirname "$SCRIPT_DIR")")"
+SDK_DIR="$WP_CONTENT_DIR/aws-sdk"
+
+echo "Plugin directory: $SCRIPT_DIR"
+echo "SDK will be installed to: $SDK_DIR"
+
+# Create SDK directory
+mkdir -p "$SDK_DIR"
+
+# Download the latest PHAR release
+echo "Downloading AWS SDK PHAR from GitHub..."
+TEMP_DIR=$(mktemp -d)
+cd "$TEMP_DIR"
+
+if ! curl -L https://github.com/aws/aws-sdk-php/releases/latest/download/aws.phar -o aws.phar; then
+    echo "ERROR: Failed to download AWS SDK PHAR"
+    echo "Please check your internet connection and try again"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+# Verify the download is non-empty (PHAR is roughly 12 MB)
+if [ ! -s "$TEMP_DIR/aws.phar" ]; then
+    echo "ERROR: Downloaded AWS SDK PHAR is empty or missing"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+# Remove existing SDK if it exists
+if [ -f "$SDK_DIR/aws.phar" ]; then
+    echo "Removing existing AWS SDK installation..."
+    rm -f "$SDK_DIR/aws.phar"
+fi
+
+# Move the PHAR into place
+echo "Installing SDK files..."
+if ! mv "$TEMP_DIR/aws.phar" "$SDK_DIR/aws.phar"; then
+    echo "ERROR: Failed to move AWS SDK PHAR into place"
+    rm -rf "$TEMP_DIR"
+    exit 1
+fi
+
+# Create the autoloader shim
+cat > "$SDK_DIR/autoload.php" << 'EOF'
+<?php
+/**
+ * AWS SDK for PHP Autoloader (External Installation)
+ * This file loads the AWS SDK via its bundled PHAR distribution.
+ *
+ * Location: wp-content/aws-sdk/autoload.php
+ * This location survives WordPress plugin updates.
+ *
+ * The aws.phar file is the official single-file build from aws/aws-sdk-php
+ * and ships with its own composer-generated autoloader, so all we need to
+ * do is require_once the PHAR itself.
+ */
+
+// Prevent multiple registrations
+if (!defined('TWP_AWS_AUTOLOADER_REGISTERED')) {
+    define('TWP_AWS_AUTOLOADER_REGISTERED', true);
+
+    // The PHAR contains its own autoloader stub; requiring it registers
+    // the AWS\, Aws\, GuzzleHttp\, and supporting namespaces.
+    $aws_phar = __DIR__ . '/aws.phar';
+    if (file_exists($aws_phar)) {
+        require_once $aws_phar;
+    }
+}
+EOF
+
+# Clean up temp directory
+cd "$SCRIPT_DIR"
+rm -rf "$TEMP_DIR"
+
+# Verify installation
+echo ""
+echo "Verifying installation..."
+if [ -f "$SDK_DIR/aws.phar" ] && [ -s "$SDK_DIR/aws.phar" ] && [ -f "$SDK_DIR/autoload.php" ]; then
+    echo "=============================================="
+    echo "AWS SDK for PHP installed successfully!"
+    echo "=============================================="
+    echo ""
+    echo "Installation location: $SDK_DIR"
+    echo ""
+    echo "This SDK is installed OUTSIDE the plugin folder,"
+    echo "so it will NOT be deleted when WordPress updates the plugin."
+    echo ""
+    echo "Next steps:"
+    echo "  1. In WP admin, open the Twilio plugin Settings page."
+    echo "  2. Switch SMS provider to \"Amazon SNS\"."
+    echo "  3. Enter AWS Access Key, Secret Key, and Region (e.g. us-west-2)."
+else
+    echo "Installation failed - files not found"
+    exit 1
+fi