Add offline desktop speech with Silero Xenia for Russian

scripts/setup-ruaccent.py

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+#!/usr/bin/env python3
+"""Workspace-local RuAccent CPU setup. No sudo or changes to system Python."""
+import hashlib
+import io
+import json
+import os
+from pathlib import Path
+import platform
+import runpy
+import shutil
+import subprocess
+import urllib.request
+import zipfile
+
+ROOT = Path(__file__).resolve().parent.parent
+
+
+def main():
+    uv = shutil.which("uv") or str(ROOT / ".local/tools/uv")
+    if not Path(uv).is_file():
+        if platform.system() != "Linux" or platform.machine() != "x86_64":
+            raise SystemExit("Install uv first on this platform, then rerun this setup script.")
+        with urllib.request.urlopen("https://pypi.org/pypi/uv/0.12.19/json", timeout=60) as source:
+            metadata = json.load(source)
+        wheel = next(x for x in metadata["urls"] if x["filename"].endswith("manylinux_2_17_x86_64.manylinux2014_x86_64.whl"))
+        with urllib.request.urlopen(wheel["url"], timeout=60) as source:
+            content = source.read()
+        expected = "a63d18a0aa38ee9f21a5406afbbaeb41303bcd954be9d6b7c1b95ac275e53958"
+        if hashlib.sha256(content).hexdigest() != expected:
+            raise RuntimeError("uv checksum mismatch")
+        with zipfile.ZipFile(io.BytesIO(content)) as archive:
+            name = next(x for x in archive.namelist() if x.endswith("/uv"))
+            Path(uv).parent.mkdir(parents=True, exist_ok=True)
+            Path(uv).write_bytes(archive.read(name))
+        Path(uv).chmod(0o755)
+    environment = dict(os.environ, UV_CACHE_DIR=str(ROOT / ".local/uv-cache"),
+                       UV_PYTHON_INSTALL_DIR=str(ROOT / ".local/python"), UV_SYSTEM_CERTS="true")
+    venv = ROOT / ".local/ruaccent-runtime"
+    python = venv / ("Scripts/python.exe" if os.name == "nt" else "bin/python")
+    if not python.is_file():
+        subprocess.run([uv, "venv", "--python", "3.12.14", str(venv)], env=environment, check=True)
+    subprocess.run([uv, "pip", "sync", "--python", str(python), str(ROOT / "scripts/ruaccent-requirements.txt")], env=environment, check=True)
+    model = ROOT / ".local/tts/ruaccent"
+    manifest = json.loads((ROOT / "scripts/ruaccent-model.json").read_text())
+    runpy.run_path(str(ROOT / "scripts/download-tts-model.py"))["download"](manifest, model)
+    # RUAccent 1.5.8.3 expects its rule-engine files beside the installed package.
+    module_path = subprocess.check_output([str(python), "-c", "import importlib.util; print(importlib.util.find_spec('ruaccent').submodule_search_locations[0])"], text=True).strip()
+    shutil.copytree(model / "koziev", Path(module_path) / "koziev", dirs_exist_ok=True)
+    worker = ROOT / "composeApp/src/jvmMain/resources/tts/ruaccent-worker.py"
+    shutil.copyfile(worker, model / "worker.py")
+    # Verify a wholly offline initialization before declaring the installation ready.
+    subprocess.run([str(python), str(model / "worker.py"), str(model), "--check"], check=True, env=environment)
+    (model / "runtime.json").write_text(json.dumps({"python": str(python), "model": "turbo3.1", "revision": manifest["revision"]}, indent=2) + "\n")
+    print("RuAccent ready: CPU, turbo3.1, full dictionary; no network during inference.", flush=True)
+
+
+if __name__ == "__main__":
+    main()