feat: add meeting transcription app scaffolding

- Add Python backend structure with FastAPI for transcription/summarization
- Add React UI with audio recording, transcript, and summary views
- Configure Tauri to manage Python backend lifecycle
- Set up Windows cross-compilation with cargo-xwin
- Add Gitea CI workflow for lint, test, and multi-platform builds
- Configure ESLint, Prettier, and Vitest for code quality

Note: App scaffolding only - Python env and models not yet set up

pyproject.toml

@@ -0,0 +1,27 @@
+[project]
+name = "chronara"
+version = "0.1.0"
+description = "Local meeting transcription and summarization app"
+requires-python = ">=3.10"
+dependencies = [
+    "fastapi==0.115.6",
+    "uvicorn==0.34.0",
+    "whisperx==3.1.6",
+    "llama-cpp-python==0.3.4",
+    "pyaudio==0.2.14",
+    "numpy==1.26.4",
+    "torch==2.5.1",
+    "pydantic==2.10.4",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.ruff]
+line-length = 100
+target-version = "py310"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "N", "W", "B", "C90", "D"]
+ignore = ["D100", "D101", "D102", "D103", "D104", "D105", "D106", "D107"]