ci: raise coverage gate from 70% to 80%, ignore load tests in pytest, add badges to README

fix

fix

fix(ci): set PYTHONPATH and stub env vars so tests can import app and initialise settings

fix: disable cache and provenance to resolve unknown blob error on ghcr.io

fix: set REPO_LOWER env var before using it in Docker image tags

fix

ci: publish Docker image to GHCR on every main push

docs: fix stale architecture doc, add README badges, CONTRIBUTING, PR template

test: add missing agent tests, API route integration tests, enforce 70% coverage in CI

ci: add GitHub Actions pipeline for lint, security scan, test, and Docker build

fix: correct bandit format flag and ruff exit-zero in CI

fix: resolve all ruff linting errors in __init__ files and CI

feat: add Dockerfile, GitHub Actions CI and Kubernetes manifests

chore: initialize project folder structure