Fix: Move ESpeakNG.xcframework to top-level Frameworks directory (#205)

This PR moves `ESpeakNG.xcframework` from
`Sources/FluidAudio/Frameworks` to a top-level `Frameworks` directory.
This resolves a runtime error `Library not loaded:
@rpath/ESpeakNG.framework/ESpeakNG` experienced by users when
integrating FluidAudio, likely due to Xcode/SPM not correctly embedding
the framework when it's nested deep within the source structure.

---------

Co-authored-by: Claude <noreply@anthropic.com>

FluidAudio.podspec

@@ -59,11 +59,6 @@ Pod::Spec.new do |spec|
     core.ios.frameworks = "CoreML", "AVFoundation", "Accelerate", "UIKit"
 
     # macOS Configuration
-    # ESpeakNG framework is only vendored for macOS in the podspec (not a framework limitation).
-    # The xcframework supports iOS, but CocoaPods fails to link it during iOS validation.
-    # This enables TTS (text-to-speech) functionality with G2P (grapheme-to-phoneme) conversion.
-    # macOS builds include: ASR, Diarization, VAD, and TTS with ESpeakNG support.
-    core.osx.vendored_frameworks = "Sources/FluidAudio/Frameworks/ESpeakNG.xcframework"
     core.osx.frameworks = "CoreML", "AVFoundation", "Accelerate", "Cocoa"
   end
 

Frameworks/ESpeakNG.xcframework/Info.plist

@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+        <key>AvailableLibraries</key>
+        <array>
+                <dict>
+                        <key>BinaryPath</key>
+                        <string>ESpeakNG.framework/ESpeakNG</string>
+                        <key>LibraryIdentifier</key>
+                        <string>macos-arm64_x86_64</string>
+                        <key>LibraryPath</key>
+                        <string>ESpeakNG.framework</string>
+                        <key>SupportedArchitectures</key>
+                        <array>
+                                <string>arm64</string>
+                                <string>x86_64</string>
+                        </array>
+                        <key>SupportedPlatform</key>
+                        <string>macos</string>
+                </dict>
+                <dict>
+                        <key>BinaryPath</key>
+                        <string>ESpeakNG.framework/ESpeakNG</string>
+                        <key>LibraryIdentifier</key>
+                        <string>ios-arm64_x86_64-simulator</string>
+                        <key>LibraryPath</key>
+                        <string>ESpeakNG.framework</string>
+                        <key>SupportedArchitectures</key>
+                        <array>
+                                <string>arm64</string>
+                                <string>x86_64</string>
+                        </array>
+                        <key>SupportedPlatform</key>
+                        <string>ios</string>
+                        <key>SupportedPlatformVariant</key>
+                        <string>simulator</string>
+                </dict>
+                <dict>
+                        <key>BinaryPath</key>
+                        <string>ESpeakNG.framework/ESpeakNG</string>
+                        <key>LibraryIdentifier</key>
+                        <string>ios-arm64</string>
+                        <key>LibraryPath</key>
+                        <string>ESpeakNG.framework</string>
+                        <key>SupportedArchitectures</key>
+                        <array>
+                                <string>arm64</string>
+                        </array>
+                        <key>SupportedPlatform</key>
+                        <string>ios</string>
+                </dict>
+                <dict>
+                        <key>BinaryPath</key>
+                        <string>ESpeakNG.framework/Versions/A/ESpeakNG</string>
+                        <key>LibraryIdentifier</key>
+                        <string>ios-arm64_x86_64-maccatalyst</string>
+                        <key>LibraryPath</key>
+                        <string>ESpeakNG.framework</string>
+                        <key>SupportedArchitectures</key>
+                        <array>
+                                <string>arm64</string>
+                                <string>x86_64</string>
+                        </array>
+                        <key>SupportedPlatform</key>
+                        <string>ios</string>
+                        <key>SupportedPlatformVariant</key>
+                        <string>maccatalyst</string>
+                </dict>
+        </array>
+        <key>CFBundlePackageType</key>
+        <string>XFWK</string>
+        <key>XCFrameworkFormatVersion</key>
+        <string>1.0</string>
+</dict>
+</plist>

Frameworks/ESpeakNG.xcframework/ios-arm64/ESpeakNG.framework/espeak-ng-data.bundle/espeak-ng-data/lang/art/lfn

@@ -1,8 +1,8 @@
-name Lingua Franca Nova
-language lfn
-
-phonemes base2
-l_unpronouncable 0
-numbers 2 3
-
-stressLength  150 140 180 180 0 0 200 200
+name Lingua Franca Nova
+language lfn
+
+phonemes base2
+l_unpronouncable 0
+numbers 2 3
+
+stressLength  150 140 180 180 0 0 200 200