refactor(services): rename Go services, remove -go suffix

mana-search-go → mana-search mana-notify-go → mana-notify mana-crawler-go → mana-crawler mana-api-gateway-go → mana-api-gateway Legacy NestJS versions are deleted, suffix no longer needed. Updated all references in docker-compose, CLAUDE.md, package.json, Forgejo workflows, and service package.json files. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-05-14 19:01:08 +02:00 · 2026-03-28 10:18:40 +01:00 · 2026-03-28 10:18:40 +01:00 · 7e931b1c6d
commit 7e931b1c6d
parent 79080d6654
90 changed files with 41 additions and 38 deletions
--- a/services/mana-crawler/.gitignore
+++ b/services/mana-crawler/.gitignore
@ -0,0 +1 @@
+dist/
--- a/services/mana-crawler/CLAUDE.md
+++ b/services/mana-crawler/CLAUDE.md
@ -0,0 +1,30 @@
+# mana-crawler (Go)
+
+Go web crawler replacing the NestJS mana-crawler. Goroutine-based worker pool instead of BullMQ.
+
+## Architecture
+
+- **Language:** Go 1.25
+- **HTML Parsing:** goquery (jQuery-like selectors)
+- **Robots.txt:** temoto/robotstxt with 24h cache
+- **Job Queue:** Goroutine worker pool + channels (replaces BullMQ)
+- **Database:** PostgreSQL (pgx v5)
+- **Port:** 3023
+
+## Endpoints
+
+- `POST /api/v1/crawl` — Start crawl job
+- `GET /api/v1/crawl` — List jobs
+- `GET /api/v1/crawl/{jobId}` — Job status
+- `GET /api/v1/crawl/{jobId}/results` — Paginated results
+- `DELETE /api/v1/crawl/{jobId}` — Cancel job
+- `GET /health` — Health check
+- `GET /metrics` — Prometheus metrics
+
+## Commands
+
+```bash
+go run ./cmd/server    # Dev
+go build ./cmd/server  # Build
+go test ./...          # Test
+```
--- a/services/mana-crawler/Dockerfile
+++ b/services/mana-crawler/Dockerfile
@ -0,0 +1,26 @@
+# Build stage
+FROM golang:1.25-alpine AS builder
+
+WORKDIR /app
+COPY services/mana-crawler-go/go.mod services/mana-crawler-go/go.sum ./
+RUN go mod download
+
+COPY services/mana-crawler-go/ .
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /mana-crawler ./cmd/server
+
+# Runtime stage
+FROM alpine:3.21
+
+RUN apk --no-cache add ca-certificates tzdata
+
+COPY --from=builder /mana-crawler /usr/local/bin/mana-crawler
+
+# Ensure Go finds CA certificates for HTTPS requests
+ENV SSL_CERT_FILE=/etc/ssl/certs/ca-certificates.crt
+
+EXPOSE 3023
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+	CMD wget -q --spider http://localhost:3023/health || exit 1
+
+ENTRYPOINT ["mana-crawler"]
--- a/services/mana-crawler/cmd/server/main.go
+++ b/services/mana-crawler/cmd/server/main.go
@ -0,0 +1,102 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/manacore/mana-crawler/internal/config"
+	"github.com/manacore/mana-crawler/internal/crawler"
+	"github.com/manacore/mana-crawler/internal/db"
+	"github.com/manacore/mana-crawler/internal/handler"
+	"github.com/manacore/mana-crawler/internal/robots"
+	"github.com/rs/cors"
+)
+
+func main() {
+	slog.SetDefault(slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
+		Level: slog.LevelInfo,
+	})))
+
+	cfg := config.Load()
+	ctx := context.Background()
+
+	// Database
+	database, err := db.New(ctx, cfg.DatabaseURL)
+	if err != nil {
+		slog.Error("database connection failed", "error", err)
+		os.Exit(1)
+	}
+	defer database.Close()
+
+	if err := database.Migrate(ctx); err != nil {
+		slog.Error("migration failed", "error", err)
+		os.Exit(1)
+	}
+
+	// Robots checker
+	robotsChecker := robots.NewChecker(cfg.UserAgent)
+
+	// Crawler engine
+	crawlerEngine := crawler.New(
+		database.Pool,
+		robotsChecker,
+		cfg.UserAgent,
+		cfg.Concurrency,
+		time.Duration(cfg.Timeout)*time.Millisecond,
+	)
+
+	// Handler
+	h := handler.NewHandler(database.Pool, crawlerEngine)
+
+	// Routes
+	mux := http.NewServeMux()
+
+	// Health & Metrics
+	mux.HandleFunc("GET /health", h.Health)
+	mux.HandleFunc("GET /metrics", h.Metrics)
+
+	// Crawl API
+	mux.HandleFunc("POST /api/v1/crawl", h.StartCrawl)
+	mux.HandleFunc("GET /api/v1/crawl", h.ListJobs)
+	mux.HandleFunc("GET /api/v1/crawl/{jobId}", h.GetJob)
+	mux.HandleFunc("GET /api/v1/crawl/{jobId}/results", h.GetJobResults)
+	mux.HandleFunc("DELETE /api/v1/crawl/{jobId}", h.CancelJob)
+
+	// CORS
+	c := cors.New(cors.Options{
+		AllowedOrigins:   cfg.CORSOrigins,
+		AllowedMethods:   []string{"GET", "POST", "DELETE", "OPTIONS"},
+		AllowedHeaders:   []string{"Authorization", "Content-Type"},
+		AllowCredentials: true,
+	})
+
+	server := &http.Server{
+		Addr:         fmt.Sprintf(":%d", cfg.Port),
+		Handler:      c.Handler(mux),
+		ReadTimeout:  30 * time.Second,
+		WriteTimeout: 120 * time.Second,
+		IdleTimeout:  120 * time.Second,
+	}
+
+	go func() {
+		sigCh := make(chan os.Signal, 1)
+		signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
+		<-sigCh
+		slog.Info("shutting down...")
+		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		defer cancel()
+		server.Shutdown(ctx)
+	}()
+
+	slog.Info("mana-crawler starting", "port", cfg.Port, "concurrency", cfg.Concurrency)
+	if err := server.ListenAndServe(); err != http.ErrServerClosed {
+		slog.Error("server error", "error", err)
+		os.Exit(1)
+	}
+}
--- a/services/mana-crawler/go.mod
+++ b/services/mana-crawler/go.mod
@ -0,0 +1,20 @@
+module github.com/manacore/mana-crawler
+
+go 1.25.0
+
+require (
+	github.com/PuerkitoBio/goquery v1.12.0
+	github.com/jackc/pgx/v5 v5.9.1
+	github.com/rs/cors v1.11.1
+	github.com/temoto/robotstxt v1.1.2
+)
+
+require (
+	github.com/andybalholm/cascadia v1.3.3 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	golang.org/x/net v0.52.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/text v0.35.0 // indirect
+)
--- a/services/mana-crawler/go.sum
+++ b/services/mana-crawler/go.sum
@ -0,0 +1,101 @@
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+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
+golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/services/mana-crawler/internal/config/config.go
+++ b/services/mana-crawler/internal/config/config.go
@ -0,0 +1,64 @@
+package config
+
+import (
+	"os"
+	"strconv"
+	"strings"
+)
+
+type Config struct {
+	Port        int
+	DatabaseURL string
+
+	RedisHost     string
+	RedisPort     int
+	RedisPassword string
+
+	UserAgent       string
+	DefaultRateLimit float64
+	DefaultMaxDepth int
+	DefaultMaxPages int
+	Timeout         int // ms
+	Concurrency     int
+
+	CORSOrigins []string
+}
+
+func Load() *Config {
+	port, _ := strconv.Atoi(getEnv("PORT", "3023"))
+	redisPort, _ := strconv.Atoi(getEnv("REDIS_PORT", "6379"))
+	rateLimit, _ := strconv.ParseFloat(getEnv("CRAWLER_DEFAULT_RATE_LIMIT", "2"), 64)
+	maxDepth, _ := strconv.Atoi(getEnv("CRAWLER_DEFAULT_MAX_DEPTH", "3"))
+	maxPages, _ := strconv.Atoi(getEnv("CRAWLER_DEFAULT_MAX_PAGES", "100"))
+	timeout, _ := strconv.Atoi(getEnv("CRAWLER_TIMEOUT", "30000"))
+	concurrency, _ := strconv.Atoi(getEnv("QUEUE_CONCURRENCY", "5"))
+
+	var origins []string
+	if o := os.Getenv("CORS_ORIGINS"); o != "" {
+		origins = strings.Split(o, ",")
+	} else {
+		origins = []string{"http://localhost:3000", "http://localhost:5173"}
+	}
+
+	return &Config{
+		Port:            port,
+		DatabaseURL:     getEnv("DATABASE_URL", "postgresql://manacore:devpassword@localhost:5432/manacore"),
+		RedisHost:       getEnv("REDIS_HOST", "localhost"),
+		RedisPort:       redisPort,
+		RedisPassword:   getEnv("REDIS_PASSWORD", ""),
+		UserAgent:       getEnv("CRAWLER_USER_AGENT", "ManaCoreCrawler/1.0 (+https://manacore.io/bot)"),
+		DefaultRateLimit: rateLimit,
+		DefaultMaxDepth: maxDepth,
+		DefaultMaxPages: maxPages,
+		Timeout:         timeout,
+		Concurrency:     concurrency,
+		CORSOrigins:     origins,
+	}
+}
+
+func getEnv(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}
--- a/services/mana-crawler/internal/crawler/crawler.go
+++ b/services/mana-crawler/internal/crawler/crawler.go
@ -0,0 +1,364 @@
+package crawler
+
+import (
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/url"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/manacore/mana-crawler/internal/parser"
+	"github.com/manacore/mana-crawler/internal/robots"
+)
+
+// CrawlConfig holds configuration for a crawl job.
+type CrawlConfig struct {
+	MaxDepth       int              `json:"maxDepth"`
+	MaxPages       int              `json:"maxPages"`
+	RateLimit      int              `json:"rateLimit"` // requests/second
+	RespectRobots  bool             `json:"respectRobots"`
+	IncludePatterns []string        `json:"includePatterns"`
+	ExcludePatterns []string        `json:"excludePatterns"`
+	Selectors      *parser.Selectors `json:"selectors"`
+	OutputFormat   string           `json:"format"` // text, html, markdown
+}
+
+// Progress tracks crawl progress.
+type Progress struct {
+	Discovered int `json:"discovered"`
+	Crawled    int `json:"crawled"`
+	Failed     int `json:"failed"`
+	Queued     int `json:"queued"`
+}
+
+// CrawlJob represents a running crawl job.
+type CrawlJob struct {
+	ID        string
+	StartURL  string
+	Domain    string
+	Config    CrawlConfig
+	Status    string // pending, running, paused, completed, failed, cancelled
+	Progress  Progress
+	Error     string
+	StartedAt *time.Time
+	CreatedAt time.Time
+}
+
+// Crawler manages crawl jobs.
+type Crawler struct {
+	pool        *pgxpool.Pool
+	robots      *robots.Checker
+	httpClient  *http.Client
+	userAgent   string
+	concurrency int
+
+	mu   sync.RWMutex
+	jobs map[string]context.CancelFunc // active job cancellation
+}
+
+// New creates a new Crawler.
+func New(pool *pgxpool.Pool, robotsChecker *robots.Checker, userAgent string, concurrency int, timeout time.Duration) *Crawler {
+	// Skip TLS verification for outgoing crawl requests.
+	// Required in Docker Desktop for Mac (TLS proxy) and for crawling
+	// sites with self-signed or expired certificates.
+	transport := &http.Transport{
+		TLSClientConfig:     &tls.Config{InsecureSkipVerify: true},
+		MaxIdleConns:        100,
+		MaxIdleConnsPerHost: 10,
+		IdleConnTimeout:     90 * time.Second,
+	}
+
+	return &Crawler{
+		pool:   pool,
+		robots: robotsChecker,
+		httpClient: &http.Client{
+			Timeout:   timeout,
+			Transport: transport,
+			CheckRedirect: func(req *http.Request, via []*http.Request) error {
+				if len(via) >= 10 {
+					return fmt.Errorf("too many redirects")
+				}
+				return nil
+			},
+		},
+		userAgent:   userAgent,
+		concurrency: concurrency,
+		jobs:        make(map[string]context.CancelFunc),
+	}
+}
+
+// StartJob begins a new crawl job.
+func (c *Crawler) StartJob(ctx context.Context, jobID, startURL string, cfg CrawlConfig) error {
+	jobCtx, cancel := context.WithCancel(ctx)
+
+	c.mu.Lock()
+	c.jobs[jobID] = cancel
+	c.mu.Unlock()
+
+	// Update job status to running
+	now := time.Now()
+	c.pool.Exec(ctx, `UPDATE crawler.crawl_jobs SET status='running', started_at=$2, updated_at=NOW() WHERE id=$1`, jobID, now)
+
+	go c.runCrawl(jobCtx, jobID, startURL, cfg)
+	return nil
+}
+
+// CancelJob cancels a running job.
+func (c *Crawler) CancelJob(jobID string) {
+	c.mu.Lock()
+	if cancel, ok := c.jobs[jobID]; ok {
+		cancel()
+		delete(c.jobs, jobID)
+	}
+	c.mu.Unlock()
+}
+
+func (c *Crawler) runCrawl(ctx context.Context, jobID, startURL string, cfg CrawlConfig) {
+	defer func() {
+		c.mu.Lock()
+		delete(c.jobs, jobID)
+		c.mu.Unlock()
+	}()
+
+	slog.Info("crawl started", "job", jobID, "url", startURL)
+
+	base, err := url.Parse(startURL)
+	if err != nil {
+		c.failJob(jobID, "invalid start URL: "+err.Error())
+		return
+	}
+
+	// Track visited URLs
+	visited := &sync.Map{}
+	var crawled, failed atomic.Int32
+
+	// Work queue (channel-based instead of BullMQ)
+	type workItem struct {
+		url       string
+		parentURL string
+		depth     int
+	}
+
+	queue := make(chan workItem, cfg.MaxPages*2)
+	queue <- workItem{url: startURL, depth: 0}
+	visited.Store(startURL, true)
+
+	// Rate limiter
+	delay := time.Duration(float64(time.Second) / float64(cfg.RateLimit))
+	ticker := time.NewTicker(delay)
+	defer ticker.Stop()
+
+	// Worker pool
+	var wg sync.WaitGroup
+	sem := make(chan struct{}, c.concurrency)
+
+	done := false
+	for !done {
+		select {
+		case <-ctx.Done():
+			c.pool.Exec(context.Background(), `UPDATE crawler.crawl_jobs SET status='cancelled', updated_at=NOW() WHERE id=$1`, jobID)
+			slog.Info("crawl cancelled", "job", jobID)
+			return
+
+		case item, ok := <-queue:
+			if !ok {
+				done = true
+				break
+			}
+
+			if int(crawled.Load()) >= cfg.MaxPages {
+				done = true
+				break
+			}
+
+			// Rate limit
+			<-ticker.C
+
+			sem <- struct{}{}
+			wg.Add(1)
+
+			go func(item workItem) {
+				defer wg.Done()
+				defer func() { <-sem }()
+
+				// Check robots.txt
+				if cfg.RespectRobots {
+					allowed, _ := c.robots.IsAllowed(ctx, item.url)
+					if !allowed {
+						slog.Debug("blocked by robots.txt", "url", item.url)
+						return
+					}
+				}
+
+				// Fetch and parse
+				result, statusCode, fetchErr := c.fetchAndParse(ctx, item.url, base, &cfg)
+
+				if fetchErr != nil {
+					failed.Add(1)
+					c.saveResult(ctx, jobID, item.url, item.parentURL, item.depth, nil, 0, fetchErr.Error())
+				} else {
+					crawled.Add(1)
+					c.saveResult(ctx, jobID, item.url, item.parentURL, item.depth, result, statusCode, "")
+
+					// Queue discovered links
+					if item.depth < cfg.MaxDepth && result != nil {
+						for _, link := range result.Links {
+							if _, loaded := visited.LoadOrStore(link, true); !loaded {
+								if matchesPatterns(link, cfg.IncludePatterns, cfg.ExcludePatterns) {
+									select {
+									case queue <- workItem{url: link, parentURL: item.url, depth: item.depth + 1}:
+									default:
+										// Queue full
+									}
+								}
+							}
+						}
+					}
+				}
+
+				// Update progress
+				prog := Progress{
+					Crawled: int(crawled.Load()),
+					Failed:  int(failed.Load()),
+				}
+				progJSON, _ := json.Marshal(prog)
+				c.pool.Exec(ctx, `UPDATE crawler.crawl_jobs SET progress=$2, updated_at=NOW() WHERE id=$1`, jobID, string(progJSON))
+
+			}(item)
+
+		default:
+			// If queue is empty and no workers running, we're done
+			if len(queue) == 0 {
+				// Wait a bit for workers to finish and potentially add more URLs
+				time.Sleep(500 * time.Millisecond)
+				if len(queue) == 0 {
+					done = true
+				}
+			}
+		}
+	}
+
+	wg.Wait()
+
+	// Mark completed
+	c.pool.Exec(context.Background(), `UPDATE crawler.crawl_jobs SET status='completed', completed_at=NOW(), updated_at=NOW() WHERE id=$1`, jobID)
+	slog.Info("crawl completed", "job", jobID, "crawled", crawled.Load(), "failed", failed.Load())
+}
+
+func (c *Crawler) fetchAndParse(ctx context.Context, rawURL string, base *url.URL, cfg *CrawlConfig) (*parser.Result, int, error) {
+	req, err := http.NewRequestWithContext(ctx, "GET", rawURL, nil)
+	if err != nil {
+		return nil, 0, err
+	}
+	req.Header.Set("User-Agent", c.userAgent)
+	req.Header.Set("Accept", "text/html,application/xhtml+xml")
+
+	start := time.Now()
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return nil, 0, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= 400 {
+		return nil, resp.StatusCode, fmt.Errorf("HTTP %d", resp.StatusCode)
+	}
+
+	contentType := resp.Header.Get("Content-Type")
+	if !strings.Contains(contentType, "text/html") && !strings.Contains(contentType, "application/xhtml") {
+		return nil, resp.StatusCode, fmt.Errorf("not HTML: %s", contentType)
+	}
+
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 10*1024*1024)) // 10MB limit
+	if err != nil {
+		return nil, resp.StatusCode, err
+	}
+
+	_ = time.Since(start) // fetchDuration
+
+	result, err := parser.Parse(string(body), rawURL, cfg.Selectors)
+	if err != nil {
+		return nil, resp.StatusCode, err
+	}
+
+	return result, resp.StatusCode, nil
+}
+
+func (c *Crawler) saveResult(ctx context.Context, jobID, url, parentURL string, depth int, result *parser.Result, statusCode int, errMsg string) {
+	var title, content, markdown, linksJSON *string
+	var metadataJSON *string
+
+	if result != nil {
+		if result.Title != "" {
+			title = &result.Title
+		}
+		if result.Content != "" {
+			content = &result.Content
+		}
+		if result.Markdown != "" {
+			markdown = &result.Markdown
+		}
+		if len(result.Links) > 0 {
+			b, _ := json.Marshal(result.Links)
+			s := string(b)
+			linksJSON = &s
+		}
+		if len(result.Metadata) > 0 {
+			b, _ := json.Marshal(result.Metadata)
+			s := string(b)
+			metadataJSON = &s
+		}
+	}
+
+	var parentPtr *string
+	if parentURL != "" {
+		parentPtr = &parentURL
+	}
+	var errPtr *string
+	if errMsg != "" {
+		errPtr = &errMsg
+	}
+
+	c.pool.Exec(ctx, `
+		INSERT INTO crawler.crawl_results (job_id, url, parent_url, depth, title, content, markdown, links, metadata, status_code, error)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
+	`, jobID, url, parentPtr, depth, title, content, markdown, linksJSON, metadataJSON, statusCode, errPtr)
+}
+
+func (c *Crawler) failJob(jobID, errMsg string) {
+	c.pool.Exec(context.Background(), `UPDATE crawler.crawl_jobs SET status='failed', error=$2, updated_at=NOW() WHERE id=$1`, jobID, errMsg)
+	slog.Error("crawl failed", "job", jobID, "error", errMsg)
+}
+
+func matchesPatterns(u string, include, exclude []string) bool {
+	// If include patterns specified, URL must match at least one
+	if len(include) > 0 {
+		matched := false
+		for _, pattern := range include {
+			if strings.Contains(u, strings.TrimSuffix(strings.TrimPrefix(pattern, "*"), "*")) {
+				matched = true
+				break
+			}
+		}
+		if !matched {
+			return false
+		}
+	}
+
+	// If exclude patterns specified, URL must not match any
+	for _, pattern := range exclude {
+		if strings.Contains(u, strings.TrimSuffix(strings.TrimPrefix(pattern, "*"), "*")) {
+			return false
+		}
+	}
+
+	return true
+}
--- a/services/mana-crawler/internal/db/db.go
+++ b/services/mana-crawler/internal/db/db.go
@ -0,0 +1,97 @@
+package db
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type DB struct {
+	Pool *pgxpool.Pool
+}
+
+func New(ctx context.Context, databaseURL string) (*DB, error) {
+	config, err := pgxpool.ParseConfig(databaseURL)
+	if err != nil {
+		return nil, fmt.Errorf("parse config: %w", err)
+	}
+	config.MaxConns = 20
+	config.MinConns = 2
+	config.MaxConnLifetime = 30 * time.Minute
+
+	pool, err := pgxpool.NewWithConfig(ctx, config)
+	if err != nil {
+		return nil, fmt.Errorf("create pool: %w", err)
+	}
+	if err := pool.Ping(ctx); err != nil {
+		return nil, fmt.Errorf("ping: %w", err)
+	}
+	slog.Info("database connected")
+	return &DB{Pool: pool}, nil
+}
+
+func (d *DB) Migrate(ctx context.Context) error {
+	sql := `
+	CREATE SCHEMA IF NOT EXISTS crawler;
+
+	CREATE TABLE IF NOT EXISTS crawler.crawl_jobs (
+		id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+		start_url TEXT NOT NULL,
+		domain TEXT NOT NULL,
+		max_depth INT NOT NULL DEFAULT 3,
+		max_pages INT NOT NULL DEFAULT 100,
+		rate_limit INT NOT NULL DEFAULT 2,
+		include_patterns JSONB,
+		exclude_patterns JSONB,
+		selectors JSONB,
+		output JSONB,
+		respect_robots BOOLEAN NOT NULL DEFAULT true,
+		status TEXT NOT NULL DEFAULT 'pending',
+		progress JSONB DEFAULT '{"discovered":0,"crawled":0,"failed":0,"queued":0}',
+		error TEXT,
+		user_id TEXT,
+		webhook_url TEXT,
+		started_at TIMESTAMPTZ,
+		completed_at TIMESTAMPTZ,
+		created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+		updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+	);
+
+	CREATE INDEX IF NOT EXISTS idx_crawl_jobs_status ON crawler.crawl_jobs(status);
+	CREATE INDEX IF NOT EXISTS idx_crawl_jobs_domain ON crawler.crawl_jobs(domain);
+
+	CREATE TABLE IF NOT EXISTS crawler.crawl_results (
+		id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+		job_id UUID NOT NULL REFERENCES crawler.crawl_jobs(id) ON DELETE CASCADE,
+		url TEXT NOT NULL,
+		parent_url TEXT,
+		depth INT NOT NULL,
+		title TEXT,
+		content TEXT,
+		markdown TEXT,
+		html TEXT,
+		metadata JSONB,
+		links JSONB,
+		status_code INT,
+		error TEXT,
+		fetch_duration_ms INT,
+		parse_duration_ms INT,
+		content_length INT,
+		created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+	);
+
+	CREATE INDEX IF NOT EXISTS idx_crawl_results_job ON crawler.crawl_results(job_id);
+	CREATE INDEX IF NOT EXISTS idx_crawl_results_url ON crawler.crawl_results(url);
+	`
+	_, err := d.Pool.Exec(ctx, sql)
+	if err != nil {
+		return fmt.Errorf("migrate: %w", err)
+	}
+	slog.Info("database migrated")
+	return nil
+}
+
+func (d *DB) Close() { d.Pool.Close() }
--- a/services/mana-crawler/internal/handler/handler.go
+++ b/services/mana-crawler/internal/handler/handler.go
@ -0,0 +1,291 @@
+package handler
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"net/url"
+	"strconv"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/manacore/mana-crawler/internal/crawler"
+)
+
+// Handler serves the crawler HTTP API.
+type Handler struct {
+	pool    *pgxpool.Pool
+	crawler *crawler.Crawler
+}
+
+// NewHandler creates a new handler.
+func NewHandler(pool *pgxpool.Pool, c *crawler.Crawler) *Handler {
+	return &Handler{pool: pool, crawler: c}
+}
+
+// StartCrawl handles POST /api/v1/crawl
+func (h *Handler) StartCrawl(w http.ResponseWriter, r *http.Request) {
+	var body struct {
+		StartURL   string               `json:"startUrl"`
+		Config     *crawler.CrawlConfig `json:"config"`
+		WebhookURL string               `json:"webhookUrl"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid request"})
+		return
+	}
+
+	if body.StartURL == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "startUrl is required"})
+		return
+	}
+
+	parsed, err := url.Parse(body.StartURL)
+	if err != nil || parsed.Host == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid URL"})
+		return
+	}
+
+	// Defaults
+	cfg := crawler.CrawlConfig{
+		MaxDepth:      3,
+		MaxPages:      100,
+		RateLimit:     2,
+		RespectRobots: true,
+		OutputFormat:  "markdown",
+	}
+	if body.Config != nil {
+		if body.Config.MaxDepth > 0 {
+			cfg.MaxDepth = body.Config.MaxDepth
+		}
+		if body.Config.MaxPages > 0 {
+			cfg.MaxPages = body.Config.MaxPages
+		}
+		if body.Config.RateLimit > 0 {
+			cfg.RateLimit = body.Config.RateLimit
+		}
+		cfg.RespectRobots = body.Config.RespectRobots
+		cfg.IncludePatterns = body.Config.IncludePatterns
+		cfg.ExcludePatterns = body.Config.ExcludePatterns
+		cfg.Selectors = body.Config.Selectors
+		if body.Config.OutputFormat != "" {
+			cfg.OutputFormat = body.Config.OutputFormat
+		}
+	}
+
+	// Insert job
+	var jobID string
+	configJSON, _ := json.Marshal(cfg)
+	err = h.pool.QueryRow(r.Context(), `
+		INSERT INTO crawler.crawl_jobs (start_url, domain, max_depth, max_pages, rate_limit, respect_robots, selectors, output, status)
+		VALUES ($1, $2, $3, $4, $5, $6, $7, $8, 'pending')
+		RETURNING id
+	`, body.StartURL, parsed.Host, cfg.MaxDepth, cfg.MaxPages, cfg.RateLimit, cfg.RespectRobots,
+		string(configJSON), fmt.Sprintf(`{"format":"%s"}`, cfg.OutputFormat)).Scan(&jobID)
+	if err != nil {
+		slog.Error("create job failed", "error", err)
+		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": "failed to create job"})
+		return
+	}
+
+	// Start crawl (use background context so it outlives the HTTP request)
+	if err := h.crawler.StartJob(context.Background(), jobID, body.StartURL, cfg); err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": "failed to start crawl"})
+		return
+	}
+
+	writeJSON(w, http.StatusCreated, map[string]any{
+		"jobId":    jobID,
+		"status":   "running",
+		"startUrl": body.StartURL,
+		"domain":   parsed.Host,
+		"config":   cfg,
+	})
+}
+
+// GetJob handles GET /api/v1/crawl/{jobId}
+func (h *Handler) GetJob(w http.ResponseWriter, r *http.Request) {
+	jobID := r.PathValue("jobId")
+
+	var job struct {
+		ID          string     `json:"jobId"`
+		StartURL    string     `json:"startUrl"`
+		Domain      string     `json:"domain"`
+		Status      string     `json:"status"`
+		Progress    string     `json:"progress"`
+		Error       *string    `json:"error"`
+		StartedAt   *time.Time `json:"startedAt"`
+		CompletedAt *time.Time `json:"completedAt"`
+		CreatedAt   time.Time  `json:"createdAt"`
+	}
+
+	err := h.pool.QueryRow(r.Context(), `
+		SELECT id, start_url, domain, status, COALESCE(progress::text, '{}'), error, started_at, completed_at, created_at
+		FROM crawler.crawl_jobs WHERE id = $1
+	`, jobID).Scan(&job.ID, &job.StartURL, &job.Domain, &job.Status, &job.Progress, &job.Error, &job.StartedAt, &job.CompletedAt, &job.CreatedAt)
+	if err != nil {
+		writeJSON(w, http.StatusNotFound, map[string]string{"error": "job not found"})
+		return
+	}
+
+	writeJSON(w, http.StatusOK, job)
+}
+
+// GetJobResults handles GET /api/v1/crawl/{jobId}/results
+func (h *Handler) GetJobResults(w http.ResponseWriter, r *http.Request) {
+	jobID := r.PathValue("jobId")
+	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	if page < 1 {
+		page = 1
+	}
+	if limit < 1 || limit > 100 {
+		limit = 50
+	}
+	offset := (page - 1) * limit
+
+	// Count total
+	var total int
+	h.pool.QueryRow(r.Context(), `SELECT COUNT(*) FROM crawler.crawl_results WHERE job_id = $1`, jobID).Scan(&total)
+
+	rows, err := h.pool.Query(r.Context(), `
+		SELECT id, url, parent_url, depth, title, content, markdown, links, metadata, status_code, error, created_at
+		FROM crawler.crawl_results WHERE job_id = $1 ORDER BY created_at LIMIT $2 OFFSET $3
+	`, jobID, limit, offset)
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": "query failed"})
+		return
+	}
+	defer rows.Close()
+
+	var results []map[string]any
+	for rows.Next() {
+		var id, u string
+		var parentURL, title, content, markdown, links, metadata, errMsg *string
+		var depth, statusCode int
+		var createdAt time.Time
+
+		rows.Scan(&id, &u, &parentURL, &depth, &title, &content, &markdown, &links, &metadata, &statusCode, &errMsg, &createdAt)
+		results = append(results, map[string]any{
+			"id": id, "url": u, "parentUrl": parentURL, "depth": depth,
+			"title": title, "content": content, "markdown": markdown,
+			"links": links, "metadata": metadata,
+			"statusCode": statusCode, "error": errMsg, "createdAt": createdAt,
+		})
+	}
+
+	if results == nil {
+		results = []map[string]any{}
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{
+		"results": results,
+		"pagination": map[string]any{
+			"page": page, "limit": limit, "total": total,
+			"totalPages": (total + limit - 1) / limit,
+		},
+	})
+}
+
+// ListJobs handles GET /api/v1/crawl
+func (h *Handler) ListJobs(w http.ResponseWriter, r *http.Request) {
+	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
+	limit, _ := strconv.Atoi(r.URL.Query().Get("limit"))
+	if page < 1 {
+		page = 1
+	}
+	if limit < 1 || limit > 100 {
+		limit = 20
+	}
+	offset := (page - 1) * limit
+	status := r.URL.Query().Get("status")
+
+	var total int
+	if status != "" {
+		h.pool.QueryRow(r.Context(), `SELECT COUNT(*) FROM crawler.crawl_jobs WHERE status=$1`, status).Scan(&total)
+	} else {
+		h.pool.QueryRow(r.Context(), `SELECT COUNT(*) FROM crawler.crawl_jobs`).Scan(&total)
+	}
+
+	query := `SELECT id, start_url, domain, status, COALESCE(progress::text,'{}'), created_at FROM crawler.crawl_jobs ORDER BY created_at DESC LIMIT $1 OFFSET $2`
+	args := []any{limit, offset}
+	if status != "" {
+		query = `SELECT id, start_url, domain, status, COALESCE(progress::text,'{}'), created_at FROM crawler.crawl_jobs WHERE status=$3 ORDER BY created_at DESC LIMIT $1 OFFSET $2`
+		args = append(args, status)
+	}
+
+	rows, err := h.pool.Query(r.Context(), query, args...)
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": "query failed"})
+		return
+	}
+	defer rows.Close()
+
+	var jobs []map[string]any
+	for rows.Next() {
+		var id, startURL, domain, st, progress string
+		var createdAt time.Time
+		rows.Scan(&id, &startURL, &domain, &st, &progress, &createdAt)
+		jobs = append(jobs, map[string]any{
+			"jobId": id, "startUrl": startURL, "domain": domain,
+			"status": st, "progress": progress, "createdAt": createdAt,
+		})
+	}
+	if jobs == nil {
+		jobs = []map[string]any{}
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{
+		"results": jobs,
+		"pagination": map[string]any{
+			"page": page, "limit": limit, "total": total,
+		},
+	})
+}
+
+// CancelJob handles DELETE /api/v1/crawl/{jobId}
+func (h *Handler) CancelJob(w http.ResponseWriter, r *http.Request) {
+	jobID := r.PathValue("jobId")
+	h.crawler.CancelJob(jobID)
+	h.pool.Exec(r.Context(), `UPDATE crawler.crawl_jobs SET status='cancelled', updated_at=NOW() WHERE id=$1`, jobID)
+	w.WriteHeader(http.StatusNoContent)
+}
+
+// Health handles GET /health
+func (h *Handler) Health(w http.ResponseWriter, r *http.Request) {
+	dbOK := "ok"
+	if err := h.pool.Ping(r.Context()); err != nil {
+		dbOK = "error"
+	}
+	status := "ok"
+	if dbOK != "ok" {
+		status = "degraded"
+	}
+	writeJSON(w, http.StatusOK, map[string]any{
+		"status": status, "service": "mana-crawler", "database": dbOK,
+		"timestamp": time.Now().UTC().Format(time.RFC3339),
+	})
+}
+
+// Metrics handles GET /metrics
+func (h *Handler) Metrics(w http.ResponseWriter, r *http.Request) {
+	var running, completed, failed int
+	h.pool.QueryRow(r.Context(), `SELECT COUNT(*) FROM crawler.crawl_jobs WHERE status='running'`).Scan(&running)
+	h.pool.QueryRow(r.Context(), `SELECT COUNT(*) FROM crawler.crawl_jobs WHERE status='completed'`).Scan(&completed)
+	h.pool.QueryRow(r.Context(), `SELECT COUNT(*) FROM crawler.crawl_jobs WHERE status='failed'`).Scan(&failed)
+
+	w.Header().Set("Content-Type", "text/plain")
+	fmt.Fprintf(w, "# HELP mana_crawler_jobs Crawl jobs by status\n")
+	fmt.Fprintf(w, "# TYPE mana_crawler_jobs gauge\n")
+	fmt.Fprintf(w, "mana_crawler_jobs{status=\"running\"} %d\n", running)
+	fmt.Fprintf(w, "mana_crawler_jobs{status=\"completed\"} %d\n", completed)
+	fmt.Fprintf(w, "mana_crawler_jobs{status=\"failed\"} %d\n", failed)
+}
+
+func writeJSON(w http.ResponseWriter, status int, data any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	json.NewEncoder(w).Encode(data)
+}
--- a/services/mana-crawler/internal/parser/parser.go
+++ b/services/mana-crawler/internal/parser/parser.go
@ -0,0 +1,219 @@
+package parser
+
+import (
+	"net/url"
+	"regexp"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+)
+
+// Result holds the extracted content from a page.
+type Result struct {
+	Title    string
+	Content  string
+	Markdown string
+	Links    []string
+	Metadata map[string]string
+}
+
+// Selectors defines custom CSS selectors for extraction.
+type Selectors struct {
+	Title   string `json:"title"`
+	Content string `json:"content"`
+	Links   string `json:"links"`
+}
+
+var (
+	reScript = regexp.MustCompile(`(?is)<script.*?</script>`)
+	reStyle  = regexp.MustCompile(`(?is)<style.*?</style>`)
+	reTags   = regexp.MustCompile(`<[^>]+>`)
+	reSpaces = regexp.MustCompile(`\s+`)
+)
+
+// Parse extracts content from HTML.
+func Parse(html string, baseURL string, selectors *Selectors) (*Result, error) {
+	doc, err := goquery.NewDocumentFromReader(strings.NewReader(html))
+	if err != nil {
+		return nil, err
+	}
+
+	base, _ := url.Parse(baseURL)
+
+	result := &Result{
+		Title:    extractTitle(doc, selectors),
+		Metadata: extractMetadata(doc),
+	}
+
+	// Extract content
+	contentHTML := extractContentHTML(doc, selectors)
+	result.Content = cleanText(contentHTML)
+	result.Markdown = htmlToMarkdown(contentHTML)
+
+	// Extract links
+	result.Links = extractLinks(doc, base, selectors)
+
+	return result, nil
+}
+
+func extractTitle(doc *goquery.Document, sel *Selectors) string {
+	if sel != nil && sel.Title != "" {
+		if t := doc.Find(sel.Title).First().Text(); t != "" {
+			return strings.TrimSpace(t)
+		}
+	}
+	if t := doc.Find("h1").First().Text(); t != "" {
+		return strings.TrimSpace(t)
+	}
+	if t := doc.Find("title").First().Text(); t != "" {
+		return strings.TrimSpace(t)
+	}
+	if t, _ := doc.Find(`meta[property="og:title"]`).Attr("content"); t != "" {
+		return t
+	}
+	return ""
+}
+
+func extractContentHTML(doc *goquery.Document, sel *Selectors) string {
+	if sel != nil && sel.Content != "" {
+		if h, err := doc.Find(sel.Content).First().Html(); err == nil && h != "" {
+			return h
+		}
+	}
+
+	contentSelectors := []string{
+		"article", "main", `[role="main"]`,
+		".main-content", ".content", ".post-content", ".article-content", ".entry-content",
+		"#content", "#main",
+	}
+	for _, s := range contentSelectors {
+		if h, err := doc.Find(s).First().Html(); err == nil && h != "" {
+			return h
+		}
+	}
+
+	h, _ := doc.Find("body").Html()
+	return h
+}
+
+func extractLinks(doc *goquery.Document, base *url.URL, sel *Selectors) []string {
+	linkSel := "a[href]"
+	if sel != nil && sel.Links != "" {
+		linkSel = sel.Links
+	}
+
+	seen := make(map[string]bool)
+	var links []string
+
+	doc.Find(linkSel).Each(func(_ int, s *goquery.Selection) {
+		href, exists := s.Attr("href")
+		if !exists {
+			return
+		}
+		href = strings.TrimSpace(href)
+
+		// Skip non-HTTP
+		if strings.HasPrefix(href, "javascript:") || strings.HasPrefix(href, "mailto:") ||
+			strings.HasPrefix(href, "tel:") || strings.HasPrefix(href, "#") {
+			return
+		}
+
+		// Resolve relative
+		parsed, err := url.Parse(href)
+		if err != nil {
+			return
+		}
+		resolved := base.ResolveReference(parsed)
+
+		// Same origin only
+		if resolved.Host != base.Host {
+			return
+		}
+
+		resolved.Fragment = ""
+		u := resolved.String()
+		if !seen[u] {
+			seen[u] = true
+			links = append(links, u)
+		}
+	})
+
+	return links
+}
+
+func extractMetadata(doc *goquery.Document) map[string]string {
+	meta := make(map[string]string)
+
+	// OpenGraph
+	doc.Find(`meta[property^="og:"]`).Each(func(_ int, s *goquery.Selection) {
+		prop, _ := s.Attr("property")
+		content, _ := s.Attr("content")
+		if prop != "" && content != "" {
+			meta[prop] = content
+		}
+	})
+
+	// Standard meta
+	for _, name := range []string{"description", "keywords", "author"} {
+		if content, _ := doc.Find(`meta[name="` + name + `"]`).Attr("content"); content != "" {
+			meta[name] = content
+		}
+	}
+
+	// Canonical
+	if href, _ := doc.Find(`link[rel="canonical"]`).Attr("href"); href != "" {
+		meta["canonical"] = href
+	}
+
+	return meta
+}
+
+func cleanText(html string) string {
+	text := reScript.ReplaceAllString(html, "")
+	text = reStyle.ReplaceAllString(text, "")
+	text = reTags.ReplaceAllString(text, " ")
+	text = strings.ReplaceAll(text, "&nbsp;", " ")
+	text = strings.ReplaceAll(text, "&amp;", "&")
+	text = strings.ReplaceAll(text, "&lt;", "<")
+	text = strings.ReplaceAll(text, "&gt;", ">")
+	text = strings.ReplaceAll(text, "&quot;", `"`)
+	text = reSpaces.ReplaceAllString(text, " ")
+	return strings.TrimSpace(text)
+}
+
+// htmlToMarkdown does a basic HTML → Markdown conversion.
+func htmlToMarkdown(html string) string {
+	// Remove scripts/styles
+	md := reScript.ReplaceAllString(html, "")
+	md = reStyle.ReplaceAllString(md, "")
+
+	// Headings
+	for i := 6; i >= 1; i-- {
+		prefix := strings.Repeat("#", i)
+		re := regexp.MustCompile(`(?i)<h` + strings.Repeat("", 0) + string(rune('0'+i)) + `[^>]*>(.*?)</h` + string(rune('0'+i)) + `>`)
+		md = re.ReplaceAllString(md, "\n"+prefix+" $1\n")
+	}
+	// Paragraphs
+	md = regexp.MustCompile(`(?i)<p[^>]*>`).ReplaceAllString(md, "\n")
+	md = strings.ReplaceAll(md, "</p>", "\n")
+	// Line breaks
+	md = regexp.MustCompile(`(?i)<br\s*/?\s*>`).ReplaceAllString(md, "\n")
+	// Bold
+	md = regexp.MustCompile(`(?i)<(?:strong|b)>(.*?)</(?:strong|b)>`).ReplaceAllString(md, "**$1**")
+	// Italic
+	md = regexp.MustCompile(`(?i)<(?:em|i)>(.*?)</(?:em|i)>`).ReplaceAllString(md, "*$1*")
+	// Code
+	md = regexp.MustCompile(`(?i)<code>(.*?)</code>`).ReplaceAllString(md, "`$1`")
+	// Pre
+	md = regexp.MustCompile(`(?i)<pre[^>]*>(.*?)</pre>`).ReplaceAllString(md, "\n```\n$1\n```\n")
+	// Links
+	md = regexp.MustCompile(`(?i)<a[^>]*href="([^"]*)"[^>]*>(.*?)</a>`).ReplaceAllString(md, "[$2]($1)")
+	// Lists
+	md = regexp.MustCompile(`(?i)<li[^>]*>`).ReplaceAllString(md, "- ")
+	md = strings.ReplaceAll(md, "</li>", "\n")
+	// Remove remaining tags
+	md = reTags.ReplaceAllString(md, "")
+	// Clean up whitespace
+	md = regexp.MustCompile(`\n{3,}`).ReplaceAllString(md, "\n\n")
+	return strings.TrimSpace(md)
+}
--- a/services/mana-crawler/internal/parser/parser_test.go
+++ b/services/mana-crawler/internal/parser/parser_test.go
@ -0,0 +1,131 @@
+package parser
+
+import "testing"
+
+func TestParse_Title(t *testing.T) {
+	html := `<html><head><title>Page Title</title></head><body><h1>Main Heading</h1><p>Content</p></body></html>`
+	result, err := Parse(html, "https://example.com", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if result.Title != "Main Heading" {
+		t.Errorf("title = %q, want %q", result.Title, "Main Heading")
+	}
+}
+
+func TestParse_Links(t *testing.T) {
+	html := `<html><body>
+		<a href="/page1">Page 1</a>
+		<a href="https://example.com/page2">Page 2</a>
+		<a href="https://other.com/ext">External</a>
+		<a href="mailto:test@test.com">Email</a>
+		<a href="#section">Anchor</a>
+	</body></html>`
+
+	result, err := Parse(html, "https://example.com", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Should have page1 and page2 (same origin), not external, mailto, or anchor
+	if len(result.Links) != 2 {
+		t.Errorf("links count = %d, want 2, got: %v", len(result.Links), result.Links)
+	}
+}
+
+func TestParse_Metadata(t *testing.T) {
+	html := `<html><head>
+		<meta name="description" content="Test description">
+		<meta property="og:title" content="OG Title">
+		<link rel="canonical" href="https://example.com/canonical">
+	</head><body></body></html>`
+
+	result, err := Parse(html, "https://example.com", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if result.Metadata["description"] != "Test description" {
+		t.Errorf("description = %q", result.Metadata["description"])
+	}
+	if result.Metadata["og:title"] != "OG Title" {
+		t.Errorf("og:title = %q", result.Metadata["og:title"])
+	}
+	if result.Metadata["canonical"] != "https://example.com/canonical" {
+		t.Errorf("canonical = %q", result.Metadata["canonical"])
+	}
+}
+
+func TestCleanText(t *testing.T) {
+	html := `<p>Hello <strong>world</strong></p><script>alert('x')</script>`
+	got := cleanText(html)
+	if got != "Hello world" {
+		t.Errorf("cleanText = %q, want %q", got, "Hello world")
+	}
+}
+
+func TestMatchesPatterns(t *testing.T) {
+	tests := []struct {
+		url     string
+		include []string
+		exclude []string
+		want    bool
+	}{
+		{"https://example.com/docs/page", []string{"/docs/"}, nil, true},
+		{"https://example.com/api/v1", []string{"/docs/"}, nil, false},
+		{"https://example.com/docs/page", nil, []string{"/api/"}, true},
+		{"https://example.com/api/page", nil, []string{"/api/"}, false},
+		{"https://example.com/any", nil, nil, true},
+	}
+
+	for _, tt := range tests {
+		// Use the crawler package's matchesPatterns — testing indirectly via parser
+		// Here we just test the logic inline
+		got := matchPatterns(tt.url, tt.include, tt.exclude)
+		if got != tt.want {
+			t.Errorf("matchPatterns(%q, %v, %v) = %v, want %v", tt.url, tt.include, tt.exclude, got, tt.want)
+		}
+	}
+}
+
+func matchPatterns(u string, include, exclude []string) bool {
+	if len(include) > 0 {
+		matched := false
+		for _, p := range include {
+			if len(p) > 0 && containsPattern(u, p) {
+				matched = true
+				break
+			}
+		}
+		if !matched {
+			return false
+		}
+	}
+	for _, p := range exclude {
+		if containsPattern(u, p) {
+			return false
+		}
+	}
+	return true
+}
+
+func containsPattern(u, pattern string) bool {
+	// Strip wildcards
+	p := pattern
+	if len(p) > 0 && p[0] == '*' {
+		p = p[1:]
+	}
+	if len(p) > 0 && p[len(p)-1] == '*' {
+		p = p[:len(p)-1]
+	}
+	return len(p) > 0 && len(u) > 0 && indexOf(u, p) >= 0
+}
+
+func indexOf(s, sub string) int {
+	for i := 0; i <= len(s)-len(sub); i++ {
+		if s[i:i+len(sub)] == sub {
+			return i
+		}
+	}
+	return -1
+}
--- a/services/mana-crawler/internal/robots/robots.go
+++ b/services/mana-crawler/internal/robots/robots.go
@ -0,0 +1,158 @@
+package robots
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"log/slog"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/temoto/robotstxt"
+)
+
+// Checker checks robots.txt rules for URLs.
+type Checker struct {
+	userAgent string
+	client    *http.Client
+	mu        sync.RWMutex
+	cache     map[string]*cacheEntry
+}
+
+type cacheEntry struct {
+	data      *robotstxt.RobotsData
+	expiresAt time.Time
+}
+
+// NewChecker creates a new robots.txt checker.
+func NewChecker(userAgent string) *Checker {
+	return &Checker{
+		userAgent: userAgent,
+		client:    &http.Client{Timeout: 5 * time.Second},
+		cache:     make(map[string]*cacheEntry),
+	}
+}
+
+// IsAllowed checks if a URL can be crawled.
+func (c *Checker) IsAllowed(ctx context.Context, rawURL string) (bool, error) {
+	u, err := parseHost(rawURL)
+	if err != nil {
+		return true, nil
+	}
+
+	robots, err := c.getRobots(ctx, u.scheme, u.host)
+	if err != nil {
+		return true, nil // Allow on error
+	}
+
+	group := robots.FindGroup(c.userAgent)
+	if group == nil {
+		return true, nil
+	}
+
+	return group.Test(rawURL), nil
+}
+
+// GetCrawlDelay returns the crawl delay for a domain.
+func (c *Checker) GetCrawlDelay(ctx context.Context, rawURL string) time.Duration {
+	u, err := parseHost(rawURL)
+	if err != nil {
+		return 0
+	}
+
+	robots, err := c.getRobots(ctx, u.scheme, u.host)
+	if err != nil {
+		return 0
+	}
+
+	group := robots.FindGroup(c.userAgent)
+	if group == nil {
+		return 0
+	}
+
+	return group.CrawlDelay
+}
+
+func (c *Checker) getRobots(ctx context.Context, scheme, host string) (*robotstxt.RobotsData, error) {
+	c.mu.RLock()
+	entry, ok := c.cache[host]
+	c.mu.RUnlock()
+
+	if ok && time.Now().Before(entry.expiresAt) {
+		return entry.data, nil
+	}
+
+	// Fetch
+	robotsURL := fmt.Sprintf("%s://%s/robots.txt", scheme, host)
+	req, err := http.NewRequestWithContext(ctx, "GET", robotsURL, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("User-Agent", c.userAgent)
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		// No robots.txt → allow all
+		empty := &robotstxt.RobotsData{}
+		c.cacheSet(host, empty)
+		return empty, nil
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	robots, err := robotstxt.FromBytes(body)
+	if err != nil {
+		slog.Warn("invalid robots.txt", "host", host, "error", err)
+		empty := &robotstxt.RobotsData{}
+		c.cacheSet(host, empty)
+		return empty, nil
+	}
+
+	c.cacheSet(host, robots)
+	return robots, nil
+}
+
+func (c *Checker) cacheSet(host string, data *robotstxt.RobotsData) {
+	c.mu.Lock()
+	c.cache[host] = &cacheEntry{data: data, expiresAt: time.Now().Add(24 * time.Hour)}
+	c.mu.Unlock()
+}
+
+type hostInfo struct {
+	scheme string
+	host   string
+}
+
+func parseHost(rawURL string) (hostInfo, error) {
+	// Simple parsing without importing net/url to avoid circular deps
+	scheme := "https"
+	rest := rawURL
+	if idx := len("https://"); len(rawURL) > idx && rawURL[:idx] == "https://" {
+		rest = rawURL[idx:]
+	} else if idx := len("http://"); len(rawURL) > idx && rawURL[:idx] == "http://" {
+		scheme = "http"
+		rest = rawURL[idx:]
+	}
+	if slashIdx := indexByte(rest, '/'); slashIdx > 0 {
+		rest = rest[:slashIdx]
+	}
+	return hostInfo{scheme: scheme, host: rest}, nil
+}
+
+func indexByte(s string, b byte) int {
+	for i := 0; i < len(s); i++ {
+		if s[i] == b {
+			return i
+		}
+	}
+	return -1
+}
--- a/services/mana-crawler/package.json
+++ b/services/mana-crawler/package.json
@ -0,0 +1,11 @@
+{
+	"name": "mana-crawler",
+	"version": "1.0.0",
+	"private": true,
+	"description": "Go web crawler replacing NestJS mana-crawler",
+	"scripts": {
+		"build": "go build -ldflags=\"-s -w\" -o dist/mana-crawler ./cmd/server",
+		"dev": "go run ./cmd/server",
+		"test": "go test ./..."
+	}
+}