Major refactor: Migrate to uv, add PostgreSQL support, and comprehensive tooling

- **Migration to uv package manager**: Replace pip/requirements with modern pyproject.toml
  - Add pyproject.toml with complete dependency management
  - Update all scripts and Makefile to use uv commands
  - Maintain backward compatibility with existing workflows

- **PostgreSQL integration and migration tools**:
  - Enhanced config.py with automatic password URL encoding
  - Complete PostgreSQL setup scripts and documentation
  - High-performance SQLite to PostgreSQL migration tool (91x speed improvement)
  - Support for both connection strings and individual components

- **Executable distribution system**:
  - PyInstaller integration for standalone .exe creation
  - Automated build scripts with batch file generation
  - Complete packaging system for end-user distribution

- **Enhanced data management**:
  - Fix --fill-gaps command with proper method implementation
  - Add gap detection and historical data backfill capabilities
  - Implement data update functionality for existing records
  - Add comprehensive database adapter methods

- **Developer experience improvements**:
  - Password encoding tools for special characters
  - Interactive setup wizards for PostgreSQL configuration
  - Comprehensive documentation and migration guides
  - Automated testing and validation tools

🤖 Generated with [Claude Code](https://claude.ai/code)

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

pyproject.toml

@@ -0,0 +1,129 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "northern-thailand-ping-river-monitor"
+version = "3.1.3"
+description = "Real-time water level monitoring system for the Ping River Basin in Northern Thailand"
+readme = "README.md"
+license = {text = "MIT"}
+authors = [
+    {name = "Ping River Monitor Team", email = "contact@example.com"}
+]
+keywords = [
+    "water monitoring",
+    "hydrology",
+    "thailand",
+    "ping river",
+    "environmental monitoring",
+    "time series",
+    "fastapi",
+    "real-time data"
+]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Science/Research",
+    "Intended Audience :: System Administrators",
+    "Topic :: Scientific/Engineering :: Hydrology",
+    "Topic :: System :: Monitoring",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Operating System :: OS Independent",
+    "Environment :: Web Environment",
+    "Framework :: FastAPI"
+]
+requires-python = ">=3.9"
+dependencies = [
+    # Core dependencies
+    "requests==2.31.0",
+    "schedule==1.2.0",
+    "pandas==2.0.3",
+    # Web API framework
+    "fastapi==0.104.1",
+    "uvicorn[standard]==0.24.0",
+    "pydantic==2.5.0",
+    # Database adapters
+    "sqlalchemy==2.0.23",
+    "influxdb==5.3.1",
+    "pymysql==1.1.0",
+    "psycopg2-binary==2.9.9",
+    # Monitoring and metrics
+    "psutil==5.9.6"
+]
+
+[project.optional-dependencies]
+dev = [
+    # Testing
+    "pytest==7.4.3",
+    "pytest-cov==4.1.0",
+    "pytest-asyncio==0.21.1",
+    # Code formatting and linting
+    "black==23.11.0",
+    "flake8==6.1.0",
+    "isort==5.12.0",
+    "mypy==1.7.1",
+    # Pre-commit hooks
+    "pre-commit==3.5.0",
+    # Development tools
+    "ipython==8.17.2",
+    "jupyter==1.0.0",
+    # Type stubs
+    "types-requests==2.31.0.10",
+    "types-python-dateutil==2.8.19.14"
+]
+docs = [
+    "sphinx==7.2.6",
+    "sphinx-rtd-theme==1.3.0",
+    "sphinx-autodoc-typehints==1.25.2"
+]
+all = [
+    "influxdb==5.3.1",
+    "pymysql==1.1.0",
+    "psycopg2-binary==2.9.9"
+]
+
+[project.scripts]
+ping-river-monitor = "src.main:main"
+ping-river-api = "src.web_api:main"
+
+[project.urls]
+Homepage = "https://git.b4l.co.th/B4L/Northern-Thailand-Ping-River-Monitor"
+Repository = "https://git.b4l.co.th/B4L/Northern-Thailand-Ping-River-Monitor"
+Issues = "https://git.b4l.co.th/B4L/Northern-Thailand-Ping-River-Monitor/issues"
+Documentation = "https://git.b4l.co.th/B4L/Northern-Thailand-Ping-River-Monitor/wiki"
+
+[tool.uv]
+dev-dependencies = [
+    # Testing
+    "pytest==7.4.3",
+    "pytest-cov==4.1.0",
+    "pytest-asyncio==0.21.1",
+    # Code formatting and linting
+    "black==23.11.0",
+    "flake8==6.1.0",
+    "isort==5.12.0",
+    "mypy==1.7.1",
+    # Pre-commit hooks
+    "pre-commit==3.5.0",
+    # Development tools
+    "ipython==8.17.2",
+    "jupyter==1.0.0",
+    # Type stubs
+    "types-requests==2.31.0.10",
+    "types-python-dateutil==2.8.19.14",
+    # Documentation
+    "sphinx==7.2.6",
+    "sphinx-rtd-theme==1.3.0",
+    "sphinx-autodoc-typehints==1.25.2",
+    "pyinstaller>=6.16.0",
+]
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.setuptools.package-dir]
+"" = "src"