diff --git a/.codecov.yml b/.codecov.yml
index 48213d79..66638a53 100644
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -11,8 +11,22 @@ coverage:
 # Fail CI if Codecov upload/report indicates a problem
 require_ci_to_pass: yes
 
-# Exclude folders from Codecov (adjust as needed)
+# Exclude folders from Codecov
 ignore:
-  - tests/*
-  - docs/*
-  - .github/*
+  - "**/tests/*"
+  - "**/test/*"
+  - "**/__tests__/*"
+  - "**/test_*.go"
+  - "**/*_test.go"
+  - "**/*.test.ts"
+  - "**/*.test.tsx"
+  - "docs/*"
+  - ".github/*"
+  - "scripts/*"
+  - "tools/*"
+  - "frontend/node_modules/*"
+  - "frontend/dist/*"
+  - "frontend/coverage/*"
+  - "backend/cmd/seed/*"
+  - "backend/data/*"
+  - "*.md"
diff --git a/.dockerignore b/.dockerignore
index 617bf82a..65fcdf52 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,27 +1,75 @@
+# Version control
 .git
 .gitignore
-node_modules
-venv
-__pycache__
-*.pyc
-*.pyo
-*.pyd
+.github/
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
 .Python
+.venv/
+venv/
 env/
-build/
-dist/
-*.egg-info
-.DS_Store
-.idea/
-.vscode/
-.env
-.env.*
-coverage/
-.coverage
+ENV/
 .pytest_cache/
-*.log
+.coverage
+*.cover
+.hypothesis/
+htmlcov/
+*.egg-info/
+
+# Node/Frontend build artifacts
+frontend/node_modules/
+frontend/coverage/
+frontend/.vite/
+frontend/*.tsbuildinfo
+# Keep frontend/dist - needed in final image
+
+# Go/Backend
+backend/*.out
+backend/coverage.*.out
+# Keep backend/api binary - needed in final image
+
+# Databases (runtime)
+backend/data/*.db
+backend/cmd/api/data/*.db
+*.sqlite
 *.sqlite3
 
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Logs
+*.log
+logs/
+
+# Environment
+.env.local
+.env.*.local
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Documentation
+docs/
+*.md
+!README.md
+
 # Docker
-docker-compose.override.yml
+docker-compose*.yml
 **/Dockerfile.*
+
+# CI/CD
+.github/
+.pre-commit-config.yaml
+
+# Scripts
+scripts/
+tools/
diff --git a/.gitignore b/.gitignore
index a0acf02e..1fba65a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,60 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.venv/
+venv/
+env/
+ENV/
+.pytest_cache/
+.coverage
+*.cover
+.hypothesis/
+htmlcov/
 
-# Node modules
-frontend/node_modules
+# Node/Frontend
+frontend/node_modules/
+frontend/dist/
+frontend/coverage/
+frontend/.vite/
+frontend/*.tsbuildinfo
+
+# Go/Backend
+backend/api
+backend/*.out
+backend/coverage.*.out
+
+# Databases
+*.db
+*.sqlite
+*.sqlite3
+backend/data/*.db
+backend/cmd/api/data/*.db
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Logs
+*.log
+logs/
+
+# Environment
+.env
+.env.*
+!.env.example
+
+# OS
+Thumbs.db
+
+# Caddy
+backend/data/caddy/
+
+# Docker
+docker-compose.override.yml