feat(proxy-engine): integrate Kokoro TTS generation into proxy-engine and simplify TypeScript prompt handling to use cached WAV files

rust/Cargo.lock

@@ -1881,16 +1881,6 @@ dependencies = [
  "vcpkg",
 ]
 
-[[package]]
-name = "opus-codec"
-version = "0.2.0"
-dependencies = [
- "base64 0.22.1",
- "codec-lib",
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "ort"
 version = "2.0.0-rc.11"
@@ -2188,6 +2178,8 @@ dependencies = [
  "base64 0.22.1",
  "codec-lib",
  "hound",
+ "kokoro-tts",
+ "ort",
  "rand 0.8.5",
  "regex-lite",
  "serde",
@@ -3008,16 +3000,6 @@ dependencies = [
  "strength_reduce",
 ]
 
-[[package]]
-name = "tts-engine"
-version = "0.1.0"
-dependencies = [
- "hound",
- "kokoro-tts",
- "ort",
- "tokio",
-]
-
 [[package]]
 name = "turn"
 version = "0.6.1"