Add initial project configuration and setup for Reference Board Viewer application. Include EditorConfig for consistent coding styles, pre-commit hooks for linting and formatting, Docker Compose for local development with PostgreSQL and MinIO, and a Nix flake for development environment management. Establish CI/CD pipeline for automated testing and deployment.

.pre-commit-config.yaml

@@ -0,0 +1,54 @@
+repos:
+  # Python linting and formatting
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.7.0
+    hooks:
+      - id: ruff
+        args: [--fix]
+        files: ^backend/
+      - id: ruff-format
+        files: ^backend/
+
+  # JavaScript/TypeScript linting
+  - repo: https://github.com/pre-commit/mirrors-eslint
+    rev: v9.15.0
+    hooks:
+      - id: eslint
+        files: \.(js|ts|svelte)$
+        args: [--fix]
+        additional_dependencies:
+          - eslint@8.56.0
+          - eslint-plugin-svelte@2.35.1
+          - eslint-config-prettier@9.1.0
+          - "@typescript-eslint/eslint-plugin@7.0.0"
+          - "@typescript-eslint/parser@7.0.0"
+
+  # Prettier for formatting
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v4.0.0-alpha.8
+    hooks:
+      - id: prettier
+        files: \.(js|ts|json|yaml|yml|md|svelte)$
+        additional_dependencies:
+          - prettier@3.2.5
+          - prettier-plugin-svelte@3.1.2
+
+  # General file checks
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v5.0.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-yaml
+      - id: check-json
+      - id: check-added-large-files
+        args: [--maxkb=5000]
+      - id: check-merge-conflict
+      - id: detect-private-key
+
+  # Nix formatting
+  - repo: https://github.com/nix-community/nixpkgs-fmt
+    rev: v1.3.0
+    hooks:
+      - id: nixpkgs-fmt
+