Feat/v3 go rewrite (#47)

Complete rewrite of ArtifactAPI from Python/FastAPI to Go as a single binary.

Core engine:
- 10 package providers: generic, docker, helm, pypi, npm, rpm, alpine,
  puppet, terraform, goproxy — each with built-in mutable patterns
- Content-addressable storage (SHA256 dedup across all remotes)
- Three-tier caching: Redis (TTL/locks) → S3/MinIO (blobs) → upstream
- Classifier with allowlist/blocklist per-remote (empty = allow all)
- Circuit breaker, conditional revalidation, stale-on-error
- Background garbage collection for orphaned blobs
- Access logging to PostgreSQL

API:
- v1 proxy endpoints (backwards compatible)
- v2 management API: CRUD remotes/virtuals, object browser, stats,
  health, SSE events, probe/test endpoint
- Virtual repos with index merging (Helm YAML + PyPI HTML)

Frontend (React + Vite, separate Dockerfile):
- Dashboard with stats, health indicators, top remotes
- Remotes list with type filter, remote detail with config/patterns
- Object browser with pagination and evict
- Test Remote page: probe any remote path, see headers/size/timing
- Virtuals page with expandable member lists

TUI (Bubble Tea):
- Dashboard, remotes list/detail, object browser, virtuals
- Vim-style navigation, artifactapi tui --endpoint <url>

Infrastructure:
- S3 client supports MinIO, Ceph RGW, AWS S3 (minio-go)
- PostgreSQL schema with migrations
- Docker Compose: API + UI + Postgres 17 + Redis 7 + MinIO
- Makefile with Go version check, build/test/lint/fmt/e2e targets
- Distroless Docker image (~15MB)

Testing:
- Unit tests for models, classifier, providers, mergers
- E2E tests with testcontainers-go (real Postgres/Redis/MinIO)

Terraform config:
- All 40 production remotes + helm virtual as HCL
- Provider repo: terraform-provider-artifactapi v0.0.1 (separate)

---------

Co-authored-by: Ben Vincent <ben@unkin.net>
Reviewed-on: #47

docker-compose.yml

@@ -1,31 +1,22 @@
-version: '3.8'
-
 services:
   artifactapi:
-    build:
-      context: .
-      dockerfile: Dockerfile
-      args:
-        - VERSION=2.2.2.dev0
+    build: .
     ports:
       - "8000:8000"
-    volumes:
-      - ./examples/single-file/remotes.yaml:/app/remotes.yaml:ro,z
-      - ./ca-bundle.pem:/app/ca-bundle.pem:ro,z
     environment:
-      - CONFIG_PATH=/app/remotes.yaml
-      - DBHOST=postgres
-      - DBPORT=5432
-      - DBUSER=artifacts
-      - DBPASS=artifacts123
-      - DBNAME=artifacts
-      - REDIS_URL=redis://redis:6379
-      - MINIO_ENDPOINT=minio:9000
-      - MINIO_ACCESS_KEY=minioadmin
-      - MINIO_SECRET_KEY=minioadmin
-      - MINIO_BUCKET=artifacts
-      - MINIO_SECURE=false
-      - REQUESTS_CA_BUNDLE=/app/ca-bundle.pem
+      LISTEN_ADDR: ":8000"
+      DBHOST: postgres
+      DBPORT: "5432"
+      DBUSER: artifacts
+      DBPASS: artifacts123
+      DBNAME: artifacts
+      DBSSL: disable
+      REDIS_URL: redis://redis:6379
+      MINIO_ENDPOINT: minio:9000
+      MINIO_ACCESS_KEY: minioadmin
+      MINIO_SECRET_KEY: minioadmin
+      MINIO_BUCKET: artifacts
+      MINIO_SECURE: "false"
     depends_on:
       postgres:
         condition: service_healthy
@@ -34,27 +25,35 @@ services:
       minio:
         condition: service_healthy
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
-      interval: 30s
-      timeout: 10s
+      test: ["CMD", "wget", "-q", "--spider", "http://localhost:8000/health"]
+      interval: 10s
+      timeout: 5s
       retries: 3
 
-  minio:
-    image: minio/minio:latest
+  ui:
+    build:
+      context: ui
+      dockerfile: Dockerfile.ui
     ports:
-      - "9000:9000"
-      - "9001:9001"
+      - "8080:80"
+    depends_on:
+      - artifactapi
+
+  postgres:
+    image: postgres:17-alpine
+    ports:
+      - "5432:5432"
     environment:
-      MINIO_ROOT_USER: minioadmin
-      MINIO_ROOT_PASSWORD: minioadmin
-    command: server /data --console-address ":9001"
+      POSTGRES_USER: artifacts
+      POSTGRES_PASSWORD: artifacts123
+      POSTGRES_DB: artifacts
     volumes:
-      - minio_data:/data
+      - postgres_data:/var/lib/postgresql/data
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:9000/minio/health/live"]
-      interval: 30s
-      timeout: 20s
-      retries: 3
+      test: ["CMD-SHELL", "pg_isready -U artifacts -d artifacts"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
 
   redis:
     image: redis:7-alpine
@@ -65,27 +64,28 @@ services:
     command: redis-server --save 20 1
     healthcheck:
       test: ["CMD", "redis-cli", "ping"]
-      interval: 30s
-      timeout: 10s
-      retries: 3
+      interval: 5s
+      timeout: 5s
+      retries: 5
 
-  postgres:
-    image: postgres:15-alpine
-    ports:
-      - "5432:5432"
+  minio:
+    image: minio/minio:latest
+    command: server /data --console-address ":9001"
     environment:
-      POSTGRES_DB: artifacts
-      POSTGRES_USER: artifacts
-      POSTGRES_PASSWORD: artifacts123
+      MINIO_ROOT_USER: minioadmin
+      MINIO_ROOT_PASSWORD: minioadmin
+    ports:
+      - "9000:9000"
+      - "9001:9001"
     volumes:
-      - postgres_data:/var/lib/postgresql/data
+      - minio_data:/data
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U artifacts -d artifacts"]
-      interval: 30s
-      timeout: 10s
-      retries: 3
+      test: ["CMD", "mc", "ready", "local"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
 
 volumes:
-  minio_data:
-  redis_data:
   postgres_data:
+  redis_data:
+  minio_data: