Fix Piper TTS absolute path resolution and improve deployment workflow

This commit resolves the "download entire voices" issue by properly handling
absolute paths in Piper model configuration and improves the deployment system.

Key changes:
- speech.py: Detect absolute paths and omit --data-dir/--download-dir flags
  when using absolute model paths, allowing Piper to load models directly
- speech.py: Add debug logging and stderr capture for Piper subprocess
- voice_to_speaker.default.yaml: Use absolute paths for all Piper models
- Makefile: Load deployment config from vars.sh for better security
- Makefile: Change restart to rebuild container ensuring code updates apply
- Add vars.sh.example template for deployment configuration
- .gitignore: Add vars.sh to prevent committing deployment secrets

Tested successfully with en_US-libritts_r-medium model using absolute path:
/app/voices/en/en_US/libritts_r/medium/en_US-libritts_r-medium.onnx

🦝 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitignore

@@ -1,6 +1,7 @@
 voices/
 .env
 speech.env
+vars.sh
 config/pre_process_map.yaml
 config/voice_to_speaker.yaml
 

Makefile

@@ -1,10 +1,18 @@
 # Raccoon Mission: OpenedAI Speech Development Makefile
-# Deploy to ai.foxhop.net server with ease
+# Deploy to remote server with ease
+# Configuration is loaded from vars.sh (copy vars.sh.example to vars.sh)
 
-REMOTE_HOST = ai.foxhop.net
-REMOTE_USER = fox
-REMOTE_PATH = ~/openedai-speech-fresh
-CONTAINER_NAME = openedai-speech-fresh-server-1
+# Load configuration from vars.sh if it exists
+ifneq (,$(wildcard vars.sh))
+    include vars.sh
+    export
+endif
+
+# Fallback defaults if vars.sh is not found
+REMOTE_HOST ?= localhost
+REMOTE_USER ?= $(USER)
+REMOTE_PATH ?= ~/openedai-speech-fresh
+CONTAINER_NAME ?= openedai-speech-fresh-server-1
 
 .PHONY: help deploy sync restart logs test clean stop start voices
 
@@ -36,8 +44,8 @@ deploy: sync restart
 	@echo "✅ Deployment complete!"
 
 restart:
-	@echo "🔄 Restarting container on $(REMOTE_HOST)..."
-	ssh $(REMOTE_USER)@$(REMOTE_HOST) "cd $(REMOTE_PATH) && docker compose restart"
+	@echo "🔄 Rebuilding and restarting container on $(REMOTE_HOST)..."
+	ssh $(REMOTE_USER)@$(REMOTE_HOST) "cd $(REMOTE_PATH) && docker compose up -d --build"
 
 stop:
 	@echo "🛑 Stopping container on $(REMOTE_HOST)..."

speech.py

@@ -223,16 +223,33 @@ async def generate_speech(request: GenerateSpeechRequest):
 
         speaker = voice_map.get('speaker', None)
 
-        tts_args = ["piper", "--model", str(piper_model), "--data-dir", "voices", "--download-dir", "voices", "--output-raw"]
+        # Use absolute path without data-dir when model path is absolute
+        if os.path.isabs(piper_model):
+            tts_args = ["piper", "--model", str(piper_model), "--output-raw"]
+        else:
+            tts_args = ["piper", "--model", str(piper_model), "--data-dir", "voices", "--download-dir", "voices", "--output-raw"]
         if speaker:
             tts_args.extend(["--speaker", str(speaker)])
         if speed != 1.0:
             tts_args.extend(["--length-scale", f"{1.0/speed}"])
 
-        tts_proc = subprocess.Popen(tts_args, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+        # Debug logging
+        logger.info(f"Piper command: {' '.join(tts_args)}")
+        logger.info(f"Model file exists: {os.path.exists(piper_model)}")
+
+        tts_proc = subprocess.Popen(tts_args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         tts_proc.stdin.write(bytearray(input_text.encode('utf-8')))
         tts_proc.stdin.close()
 
+        # Log any stderr output from Piper
+        if tts_proc.stderr:
+            import threading
+            def log_stderr():
+                stderr_output = tts_proc.stderr.read().decode('utf-8', errors='replace')
+                if stderr_output.strip():
+                    logger.error(f"Piper stderr: {stderr_output}")
+            threading.Thread(target=log_stderr, daemon=True).start()
+
         try:
             with open(f"{piper_model}.json", 'r') as pvc_f:
                 conf = json.load(pvc_f)

vars.sh.example

@@ -0,0 +1,8 @@
+#!/bin/bash
+# Copy this file to vars.sh and fill in your values
+# vars.sh is gitignored for security
+
+export REMOTE_HOST="your.server.hostname"
+export REMOTE_USER="your_username"
+export REMOTE_PATH="~/openedai-speech-fresh"
+export CONTAINER_NAME="openedai-speech-fresh-server-1"