commit e0d2b5b616fdcf7705bc872f9f9d5f9a6f8411c0
Author: toki <r0bin5736@gmail.com>
Date:   Tue May 19 07:32:31 2026 +0900

    Initial nomadcode-core project

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0394978
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/.build/
+/bin/nomadcode-core
+coverage.out
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..77631b6
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,22 @@
+# syntax=docker/dockerfile:1
+
+FROM golang:1.25-alpine AS build
+WORKDIR /src
+
+RUN apk add --no-cache ca-certificates
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o /bin/nomadcode-core ./cmd/server
+
+FROM alpine:3.21
+RUN adduser -D -H appuser
+WORKDIR /app
+
+COPY --from=build /bin/nomadcode-core /usr/local/bin/nomadcode-core
+
+USER appuser
+EXPOSE 8080
+ENTRYPOINT ["nomadcode-core"]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..196e438
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,29 @@
+export APP_ENV ?= local
+export HTTP_ADDR ?= :8080
+export DATABASE_URL ?= postgres://nomadcode:nomadcode@localhost:5432/nomadcode?sslmode=disable
+export GOOSE_DRIVER ?= postgres
+export GOOSE_DBSTRING ?= $(DATABASE_URL)
+export OUTPUT ?= .build/nomadcode-core
+
+.PHONY: run test build docker-up docker-down migrate-up sqlc
+
+run:
+	./bin/run
+
+test:
+	./bin/test
+
+build:
+	./bin/build
+
+docker-up:
+	./bin/docker-up
+
+docker-down:
+	./bin/docker-down
+
+migrate-up:
+	./bin/migrate-up
+
+sqlc:
+	./bin/sqlc
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..fd653c2
--- /dev/null
+++ b/README.md
@@ -0,0 +1,135 @@
+# NomadCode Core
+
+NomadCode Core는 사용자 요청을 작업 단위로 받고, 작업 상태를 저장하며, 비동기 Agent 작업 흐름을 관리하기 위한 서버입니다.
+
+초기 목표는 작업 생성과 조회, PostgreSQL 기반 작업 상태 저장, River 기반 비동기 작업 실행, Plane/Mattermost Adapter stub 구성, 이후 IOP / Agent Integrator와 연결 가능한 구조 확보입니다.
+
+## 현재 구현 범위
+
+- Go HTTP Server
+- `GET /healthz`, `GET /readyz`
+- task 생성 / 조회 / 목록 / enqueue API
+- PostgreSQL 연결
+- goose migration
+- sqlc 기반 query 구조
+- River dummy job
+- Plane Adapter stub
+- Mattermost Adapter stub
+- 선택적 Docker Compose 실행 환경
+
+## 현재 구현하지 않은 범위
+
+- 실제 Plane API 호출
+- 실제 Mattermost 메시지 발송
+- IOP 연동
+- Agent Integrator 연동
+- Outline / Forgejo / Nextcloud 연동
+- MCP 서버
+- Web Agent UI
+- Flutter 앱
+- 복잡한 권한 정책
+- 복잡한 workflow DSL
+
+## 단계별 다음 작업
+
+### Phase 1. Server Skeleton
+
+현재 스캐폴드 단계입니다.
+
+목표:
+- 서버 실행 골격 구성
+- task 저장 구조 구성
+- dummy 비동기 job 실행
+- Adapter stub 생성
+
+### Phase 2. Workflow Core
+
+목표:
+- task 상태 전이 정리
+- enqueue / running / completed / failed 흐름 안정화
+- retry / timeout 기본 구조 추가
+- notification event 구조 정리
+
+### Phase 3. External Integration
+
+목표:
+- Plane issue 생성 / comment / status update 구현
+- Mattermost 메시지 발송 구현
+- Agent Integrator 호출 구조 추가
+- IOP 호출 구조 추가
+
+## 실행 방법
+
+로컬 실행은 호스트에 Go와 PostgreSQL이 설치되어 있다는 전제로 진행합니다. 기본 `DATABASE_URL`은 `postgres://nomadcode:nomadcode@localhost:5432/nomadcode?sslmode=disable` 입니다.
+
+PostgreSQL 사용자와 DB 생성 예시:
+
+```bash
+psql postgres -c "CREATE USER nomadcode WITH PASSWORD 'nomadcode';"
+psql postgres -c "CREATE DATABASE nomadcode OWNER nomadcode;"
+```
+
+Migration 실행:
+
+```bash
+./bin/migrate-up
+```
+
+서버 실행:
+
+```bash
+./bin/run
+```
+
+다른 DB 주소를 사용할 경우:
+
+```bash
+DATABASE_URL="postgres://user:password@localhost:5432/dbname?sslmode=disable" ./bin/migrate-up
+DATABASE_URL="postgres://user:password@localhost:5432/dbname?sslmode=disable" ./bin/run
+```
+
+테스트 실행:
+
+```bash
+./bin/test
+```
+
+sqlc 실행:
+
+```bash
+./bin/sqlc
+```
+
+Docker Compose 실행은 통합 확인이 필요할 때 선택적으로 사용합니다.
+
+```bash
+./bin/docker-up
+```
+
+Makefile은 같은 명령을 감싸는 얇은 alias입니다.
+
+```bash
+make migrate-up
+make run
+make test
+make sqlc
+```
+
+API 테스트:
+
+```bash
+curl localhost:8080/healthz
+curl localhost:8080/readyz
+```
+
+```bash
+curl -X POST localhost:8080/api/tasks \
+  -H 'Content-Type: application/json' \
+  -d '{"title":"README 수정 작업","source":"manual","payload":{"message":"README 초안을 정리해줘"}}'
+```
+
+```bash
+curl localhost:8080/api/tasks
+curl localhost:8080/api/tasks/{id}
+curl -X POST localhost:8080/api/tasks/{id}/enqueue
+```
diff --git a/bin/build b/bin/build
new file mode 100755
index 0000000..6346104
--- /dev/null
+++ b/bin/build
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+OUTPUT="${OUTPUT:-.build/nomadcode-core}"
+mkdir -p "$(dirname "$OUTPUT")"
+
+exec go build -o "$OUTPUT" ./cmd/server
diff --git a/bin/docker-down b/bin/docker-down
new file mode 100755
index 0000000..2ce9574
--- /dev/null
+++ b/bin/docker-down
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+exec docker compose down "$@"
diff --git a/bin/docker-up b/bin/docker-up
new file mode 100755
index 0000000..180fa17
--- /dev/null
+++ b/bin/docker-up
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+exec docker compose up --build "$@"
diff --git a/bin/migrate-up b/bin/migrate-up
new file mode 100755
index 0000000..a7a6ad8
--- /dev/null
+++ b/bin/migrate-up
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+GOOSE_DRIVER="${GOOSE_DRIVER:-postgres}"
+DATABASE_URL="${DATABASE_URL:-postgres://nomadcode:nomadcode@localhost:5432/nomadcode?sslmode=disable}"
+GOOSE_DBSTRING="${GOOSE_DBSTRING:-$DATABASE_URL}"
+
+if [[ -n "${GOOSE_BIN:-}" ]]; then
+  goose_cmd=("$GOOSE_BIN")
+else
+  goose_cmd=(go run github.com/pressly/goose/v3/cmd/goose@v3.27.1)
+fi
+
+exec "${goose_cmd[@]}" -dir migrations "$GOOSE_DRIVER" "$GOOSE_DBSTRING" up
diff --git a/bin/run b/bin/run
new file mode 100755
index 0000000..d024278
--- /dev/null
+++ b/bin/run
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+export APP_ENV="${APP_ENV:-local}"
+export HTTP_ADDR="${HTTP_ADDR:-:8080}"
+export DATABASE_URL="${DATABASE_URL:-postgres://nomadcode:nomadcode@localhost:5432/nomadcode?sslmode=disable}"
+
+exec go run ./cmd/server "$@"
diff --git a/bin/sqlc b/bin/sqlc
new file mode 100755
index 0000000..6c62921
--- /dev/null
+++ b/bin/sqlc
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+if [[ -n "${SQLC_BIN:-}" ]]; then
+  sqlc_cmd=("$SQLC_BIN")
+else
+  sqlc_cmd=(go run github.com/sqlc-dev/sqlc/cmd/sqlc@v1.31.1)
+fi
+
+exec "${sqlc_cmd[@]}" generate "$@"
diff --git a/bin/test b/bin/test
new file mode 100755
index 0000000..38a515f
--- /dev/null
+++ b/bin/test
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+exec go test ./... "$@"
diff --git a/cmd/server/main.go b/cmd/server/main.go
new file mode 100644
index 0000000..8c102f1
--- /dev/null
+++ b/cmd/server/main.go
@@ -0,0 +1,98 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"log/slog"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/nomadcode/nomadcode-core/internal/adapters/mattermost"
+	"github.com/nomadcode/nomadcode-core/internal/config"
+	"github.com/nomadcode/nomadcode-core/internal/db"
+	apphttp "github.com/nomadcode/nomadcode-core/internal/http"
+	"github.com/nomadcode/nomadcode-core/internal/notification"
+	"github.com/nomadcode/nomadcode-core/internal/scheduler"
+	"github.com/nomadcode/nomadcode-core/internal/storage"
+	"github.com/nomadcode/nomadcode-core/internal/workflow"
+)
+
+func main() {
+	logger := slog.New(slog.NewJSONHandler(os.Stdout, nil))
+	if err := run(logger); err != nil {
+		logger.Error("server stopped", "error", err)
+		os.Exit(1)
+	}
+}
+
+func run(logger *slog.Logger) error {
+	cfg := config.Load()
+
+	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
+	defer stop()
+
+	pool, err := db.NewPool(ctx, cfg.DatabaseURL)
+	if err != nil {
+		return err
+	}
+	defer pool.Close()
+
+	store := storage.NewStore(pool)
+	mattermostClient := mattermost.NewClient(mattermost.Config{
+		BaseURL: cfg.MattermostBaseURL,
+		Token:   cfg.MattermostToken,
+	}, logger)
+	notificationService := notification.NewService(mattermostClient, logger)
+
+	taskScheduler, err := scheduler.New(pool, store, notificationService, logger)
+	if err != nil {
+		return err
+	}
+	if err := taskScheduler.Migrate(ctx); err != nil {
+		return err
+	}
+	if err := taskScheduler.Start(ctx); err != nil {
+		return err
+	}
+
+	workflowService := workflow.NewService(store, taskScheduler, logger)
+	handler := apphttp.NewHandler(pool, workflowService, logger)
+	server := &http.Server{
+		Addr:              cfg.HTTPAddr,
+		Handler:           apphttp.NewRouter(handler, logger),
+		ReadHeaderTimeout: 5 * time.Second,
+	}
+
+	serverErr := make(chan error, 1)
+	go func() {
+		logger.Info("server listening", "addr", cfg.HTTPAddr, "env", cfg.AppEnv)
+		if err := server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
+			serverErr <- err
+			return
+		}
+		serverErr <- nil
+	}()
+
+	select {
+	case <-ctx.Done():
+	case err := <-serverErr:
+		if err != nil {
+			return err
+		}
+	}
+
+	shutdownCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	if err := server.Shutdown(shutdownCtx); err != nil {
+		return err
+	}
+	if err := taskScheduler.Stop(shutdownCtx); err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..094239b
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,35 @@
+services:
+  postgres:
+    image: postgres:17-alpine
+    environment:
+      POSTGRES_DB: nomadcode
+      POSTGRES_USER: nomadcode
+      POSTGRES_PASSWORD: nomadcode
+    ports:
+      - "5432:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U nomadcode -d nomadcode"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+
+  nomadcode-core:
+    build: .
+    environment:
+      APP_ENV: local
+      HTTP_ADDR: :8080
+      DATABASE_URL: postgres://nomadcode:nomadcode@postgres:5432/nomadcode?sslmode=disable
+      MATTERMOST_BASE_URL: ""
+      MATTERMOST_TOKEN: ""
+      PLANE_BASE_URL: ""
+      PLANE_TOKEN: ""
+    depends_on:
+      postgres:
+        condition: service_healthy
+    ports:
+      - "8080:8080"
+
+volumes:
+  postgres-data:
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..20f7431
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,30 @@
+module github.com/nomadcode/nomadcode-core
+
+go 1.25.0
+
+require (
+	github.com/go-chi/chi/v5 v5.2.5
+	github.com/jackc/pgx/v5 v5.9.2
+	github.com/riverqueue/river v0.37.1
+	github.com/riverqueue/river/riverdriver/riverpgxv5 v0.37.1
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // 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
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/riverqueue/river/riverdriver v0.37.1 // indirect
+	github.com/riverqueue/river/rivershared v0.37.1 // indirect
+	github.com/riverqueue/river/rivertype v0.37.1 // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
+	github.com/tidwall/gjson v1.19.0 // indirect
+	github.com/tidwall/match v1.2.0 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+	github.com/tidwall/sjson v1.2.5 // indirect
+	go.uber.org/goleak v1.3.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/text v0.37.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..9d7375f
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,63 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
+github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
+github.com/jackc/pgerrcode v0.0.0-20240316143900-6e2875d9b438 h1:Dj0L5fhJ9F82ZJyVOmBx6msDp/kfd1t9GRfny/mfJA0=
+github.com/jackc/pgerrcode v0.0.0-20240316143900-6e2875d9b438/go.mod h1:a/s9Lp5W7n/DD0VrVoyJ00FbP2ytTPDVOivvn2bMlds=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.9.2 h1:3ZhOzMWnR4yJ+RW1XImIPsD1aNSz4T4fyP7zlQb56hw=
+github.com/jackc/pgx/v5 v5.9.2/go.mod h1:mal1tBGAFfLHvZzaYh77YS/eC6IX9OWbRV1QIIM0Jn4=
+github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
+github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/riverqueue/river v0.37.1 h1:lZgXooqtGulMrItWFzhEDLeSBWoiJ3ZmKofKkHgBOwo=
+github.com/riverqueue/river v0.37.1/go.mod h1:+5tefuBbaBRWiIEWOIyQexwQwhPVX23tsWgomIAcP88=
+github.com/riverqueue/river/riverdriver v0.37.1 h1:IXV2xdS+LvsBvrJK+/GOy9s/a8P+9JW41RYIV/Vdya0=
+github.com/riverqueue/river/riverdriver v0.37.1/go.mod h1:e7x1Q9gUFpbtKJ6/K4qpGxPT1ayc9NGlknZbwl0Re14=
+github.com/riverqueue/river/riverdriver/riverpgxv5 v0.37.1 h1:dja9aBIEZTRk+gX+38t6/h+hLdWex7TmJdxft0Y0EXU=
+github.com/riverqueue/river/riverdriver/riverpgxv5 v0.37.1/go.mod h1:48ij+FKRcarxG2fDscCreFLUiDXs+u6Wxjx5/TntKKU=
+github.com/riverqueue/river/rivershared v0.37.1 h1:lvsxy9RAU+f1gRQ8+B4lVylyb184z4/82ilyU0DrsnY=
+github.com/riverqueue/river/rivershared v0.37.1/go.mod h1:NAJdSXrjUjqdudLGCEm5heD2YRccClI9I9Yq+F3fyQM=
+github.com/riverqueue/river/rivertype v0.37.1 h1:XZlhRR+c4RIgTTR//mJUZGAR26FNAHlMaNERpgUjb0c=
+github.com/riverqueue/river/rivertype v0.37.1/go.mod h1:D1Ad+EaZiaXbQbJcJcfeicXJMBKno0n6UcfKI5Q7DIQ=
+github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
+github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
+github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
+github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/tidwall/gjson v1.14.2/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
+github.com/tidwall/gjson v1.19.0 h1:xwxm7n691Uf3u5OFjzngavjGTh55KX5q/9w9xHW88JU=
+github.com/tidwall/gjson v1.19.0/go.mod h1:V37/opeE/JbLUOfH0QTXiNez2l0RUjYUhpT4szFQAfc=
+github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
+github.com/tidwall/match v1.2.0 h1:0pt8FlkOwjN2fPt4bIl4BoNxb98gGHN2ObFEDkrfZnM=
+github.com/tidwall/match v1.2.0/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
+github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
+github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
+github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
+github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
+github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
+golang.org/x/sync v0.20.0 h1:e0PTpb7pjO8GAtTs2dQ6jYa5BWYlMuX047Dco/pItO4=
+golang.org/x/sync v0.20.0/go.mod h1:9xrNwdLfx4jkKbNva9FpL6vEN7evnE43NNNJQ2LF3+0=
+golang.org/x/text v0.37.0 h1:Cqjiwd9eSg8e0QAkyCaQTNHFIIzWtidPahFWR83rTrc=
+golang.org/x/text v0.37.0/go.mod h1:a5sjxXGs9hsn/AJVwuElvCAo9v8QYLzvavO5z2PiM38=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
+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=
diff --git a/goose.env.example b/goose.env.example
new file mode 100644
index 0000000..b55e3db
--- /dev/null
+++ b/goose.env.example
@@ -0,0 +1,2 @@
+GOOSE_DRIVER=postgres
+GOOSE_DBSTRING=postgres://nomadcode:nomadcode@localhost:5432/nomadcode?sslmode=disable
diff --git a/internal/adapters/mattermost/client.go b/internal/adapters/mattermost/client.go
new file mode 100644
index 0000000..7005a1b
--- /dev/null
+++ b/internal/adapters/mattermost/client.go
@@ -0,0 +1,54 @@
+package mattermost
+
+import (
+	"context"
+	"log/slog"
+)
+
+type Config struct {
+	BaseURL string
+	Token   string
+}
+
+type Client struct {
+	cfg    Config
+	logger *slog.Logger
+}
+
+type MessageInput struct {
+	ChannelID string
+	Text      string
+}
+
+type TaskNotificationInput struct {
+	TaskID  string
+	Title   string
+	Status  string
+	Message string
+}
+
+func NewClient(cfg Config, logger *slog.Logger) *Client {
+	return &Client{cfg: cfg, logger: logger}
+}
+
+func (c *Client) SendMessage(ctx context.Context, input MessageInput) error {
+	_ = ctx
+	if c.logger != nil {
+		c.logger.Info("mattermost send message skipped", "channel_id", input.ChannelID, "text", input.Text)
+	}
+	return nil
+}
+
+func (c *Client) SendTaskNotification(ctx context.Context, input TaskNotificationInput) error {
+	_ = ctx
+	if c.logger != nil {
+		c.logger.Info(
+			"mattermost task notification skipped",
+			"task_id", input.TaskID,
+			"title", input.Title,
+			"status", input.Status,
+			"message", input.Message,
+		)
+	}
+	return nil
+}
diff --git a/internal/adapters/plane/client.go b/internal/adapters/plane/client.go
new file mode 100644
index 0000000..cb66721
--- /dev/null
+++ b/internal/adapters/plane/client.go
@@ -0,0 +1,60 @@
+package plane
+
+import (
+	"context"
+	"errors"
+	"log/slog"
+)
+
+var ErrNotImplemented = errors.New("plane adapter not implemented")
+
+type Config struct {
+	BaseURL string
+	Token   string
+}
+
+type Client struct {
+	cfg    Config
+	logger *slog.Logger
+}
+
+type CreateIssueInput struct {
+	Title       string
+	Description string
+}
+
+type AddCommentInput struct {
+	IssueID string
+	Body    string
+}
+
+type UpdateIssueStatusInput struct {
+	IssueID string
+	Status  string
+}
+
+func NewClient(cfg Config, logger *slog.Logger) *Client {
+	return &Client{cfg: cfg, logger: logger}
+}
+
+func (c *Client) CreateIssue(ctx context.Context, input CreateIssueInput) error {
+	c.log(ctx, "plane create issue skipped", "title", input.Title)
+	return ErrNotImplemented
+}
+
+func (c *Client) AddComment(ctx context.Context, input AddCommentInput) error {
+	c.log(ctx, "plane add comment skipped", "issue_id", input.IssueID)
+	return ErrNotImplemented
+}
+
+func (c *Client) UpdateIssueStatus(ctx context.Context, input UpdateIssueStatusInput) error {
+	c.log(ctx, "plane update issue status skipped", "issue_id", input.IssueID, "status", input.Status)
+	return ErrNotImplemented
+}
+
+func (c *Client) log(ctx context.Context, message string, args ...any) {
+	_ = ctx
+	if c.logger != nil {
+		c.logger.Info(message, args...)
+	}
+}
diff --git a/internal/config/config.go b/internal/config/config.go
new file mode 100644
index 0000000..5961d76
--- /dev/null
+++ b/internal/config/config.go
@@ -0,0 +1,33 @@
+package config
+
+import "os"
+
+type Config struct {
+	AppEnv            string
+	HTTPAddr          string
+	DatabaseURL       string
+	MattermostBaseURL string
+	MattermostToken   string
+	PlaneBaseURL      string
+	PlaneToken        string
+}
+
+func Load() Config {
+	return Config{
+		AppEnv:            getEnv("APP_ENV", "local"),
+		HTTPAddr:          getEnv("HTTP_ADDR", ":8080"),
+		DatabaseURL:       os.Getenv("DATABASE_URL"),
+		MattermostBaseURL: os.Getenv("MATTERMOST_BASE_URL"),
+		MattermostToken:   os.Getenv("MATTERMOST_TOKEN"),
+		PlaneBaseURL:      os.Getenv("PLANE_BASE_URL"),
+		PlaneToken:        os.Getenv("PLANE_TOKEN"),
+	}
+}
+
+func getEnv(key, fallback string) string {
+	value := os.Getenv(key)
+	if value == "" {
+		return fallback
+	}
+	return value
+}
diff --git a/internal/db/db.go b/internal/db/db.go
new file mode 100644
index 0000000..1a90c27
--- /dev/null
+++ b/internal/db/db.go
@@ -0,0 +1,30 @@
+package db
+
+import (
+	"context"
+	"errors"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+func NewPool(ctx context.Context, databaseURL string) (*pgxpool.Pool, error) {
+	if databaseURL == "" {
+		return nil, errors.New("DATABASE_URL is required")
+	}
+
+	cfg, err := pgxpool.ParseConfig(databaseURL)
+	if err != nil {
+		return nil, err
+	}
+
+	pool, err := pgxpool.NewWithConfig(ctx, cfg)
+	if err != nil {
+		return nil, err
+	}
+	if err := pool.Ping(ctx); err != nil {
+		pool.Close()
+		return nil, err
+	}
+
+	return pool, nil
+}
diff --git a/internal/db/queries.go b/internal/db/queries.go
new file mode 100644
index 0000000..0f4b954
--- /dev/null
+++ b/internal/db/queries.go
@@ -0,0 +1,164 @@
+// Code generated placeholder for sqlc-style queries. DO NOT EDIT lightly.
+package db
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type DBTX interface {
+	Exec(context.Context, string, ...any) (pgconn.CommandTag, error)
+	Query(context.Context, string, ...any) (pgx.Rows, error)
+	QueryRow(context.Context, string, ...any) pgx.Row
+}
+
+type Queries struct {
+	db DBTX
+}
+
+func New(db DBTX) *Queries {
+	return &Queries{db: db}
+}
+
+type Task struct {
+	ID        string          `json:"id"`
+	Title     string          `json:"title"`
+	Source    string          `json:"source"`
+	Status    string          `json:"status"`
+	Payload   json.RawMessage `json:"payload"`
+	Result    json.RawMessage `json:"result"`
+	Error     *string         `json:"error,omitempty"`
+	CreatedAt time.Time       `json:"created_at"`
+	UpdatedAt time.Time       `json:"updated_at"`
+}
+
+type CreateTaskParams struct {
+	Title   string          `json:"title"`
+	Source  string          `json:"source"`
+	Payload json.RawMessage `json:"payload"`
+}
+
+type UpdateTaskStatusParams struct {
+	ID     string `json:"id"`
+	Status string `json:"status"`
+}
+
+type CompleteTaskParams struct {
+	ID     string          `json:"id"`
+	Result json.RawMessage `json:"result"`
+}
+
+type FailTaskParams struct {
+	ID    string `json:"id"`
+	Error string `json:"error"`
+}
+
+const taskColumns = `
+	id::text,
+	title,
+	source,
+	status,
+	payload,
+	result,
+	error,
+	created_at,
+	updated_at
+`
+
+func (q *Queries) CreateTask(ctx context.Context, arg CreateTaskParams) (Task, error) {
+	row := q.db.QueryRow(ctx, `
+		INSERT INTO tasks (title, source, payload)
+		VALUES ($1, $2, $3)
+		RETURNING `+taskColumns, arg.Title, arg.Source, arg.Payload)
+	return scanTask(row)
+}
+
+func (q *Queries) GetTask(ctx context.Context, id string) (Task, error) {
+	row := q.db.QueryRow(ctx, `
+		SELECT `+taskColumns+`
+		FROM tasks
+		WHERE id::text = $1
+	`, id)
+	return scanTask(row)
+}
+
+func (q *Queries) ListTasks(ctx context.Context, limit int32) ([]Task, error) {
+	rows, err := q.db.Query(ctx, `
+		SELECT `+taskColumns+`
+		FROM tasks
+		ORDER BY created_at DESC
+		LIMIT $1
+	`, limit)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var tasks []Task
+	for rows.Next() {
+		task, err := scanTask(rows)
+		if err != nil {
+			return nil, err
+		}
+		tasks = append(tasks, task)
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+
+	return tasks, nil
+}
+
+func (q *Queries) UpdateTaskStatus(ctx context.Context, arg UpdateTaskStatusParams) (Task, error) {
+	row := q.db.QueryRow(ctx, `
+		UPDATE tasks
+		SET status = $2, updated_at = now()
+		WHERE id::text = $1
+		RETURNING `+taskColumns, arg.ID, arg.Status)
+	return scanTask(row)
+}
+
+func (q *Queries) CompleteTask(ctx context.Context, arg CompleteTaskParams) (Task, error) {
+	row := q.db.QueryRow(ctx, `
+		UPDATE tasks
+		SET status = 'completed', result = $2, error = NULL, updated_at = now()
+		WHERE id::text = $1
+		RETURNING `+taskColumns, arg.ID, arg.Result)
+	return scanTask(row)
+}
+
+func (q *Queries) FailTask(ctx context.Context, arg FailTaskParams) (Task, error) {
+	row := q.db.QueryRow(ctx, `
+		UPDATE tasks
+		SET status = 'failed', error = $2, updated_at = now()
+		WHERE id::text = $1
+		RETURNING `+taskColumns, arg.ID, arg.Error)
+	return scanTask(row)
+}
+
+type taskScanner interface {
+	Scan(dest ...any) error
+}
+
+func scanTask(row taskScanner) (Task, error) {
+	var task Task
+	err := row.Scan(
+		&task.ID,
+		&task.Title,
+		&task.Source,
+		&task.Status,
+		&task.Payload,
+		&task.Result,
+		&task.Error,
+		&task.CreatedAt,
+		&task.UpdatedAt,
+	)
+	if err != nil {
+		return Task{}, err
+	}
+	return task, nil
+}
diff --git a/internal/http/handlers.go b/internal/http/handlers.go
new file mode 100644
index 0000000..d098fbc
--- /dev/null
+++ b/internal/http/handlers.go
@@ -0,0 +1,137 @@
+package http
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"log/slog"
+	stdhttp "net/http"
+	"strconv"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"github.com/nomadcode/nomadcode-core/internal/workflow"
+)
+
+type Handler struct {
+	db       *pgxpool.Pool
+	workflow *workflow.Service
+	logger   *slog.Logger
+}
+
+func NewHandler(pool *pgxpool.Pool, workflowService *workflow.Service, logger *slog.Logger) *Handler {
+	return &Handler{
+		db:       pool,
+		workflow: workflowService,
+		logger:   logger,
+	}
+}
+
+func (h *Handler) Healthz(w stdhttp.ResponseWriter, r *stdhttp.Request) {
+	writeJSON(w, stdhttp.StatusOK, map[string]string{"status": "ok"})
+}
+
+func (h *Handler) Readyz(w stdhttp.ResponseWriter, r *stdhttp.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), readyTimeout)
+	defer cancel()
+
+	if err := h.db.Ping(ctx); err != nil {
+		writeError(w, stdhttp.StatusServiceUnavailable, "database is not ready")
+		return
+	}
+
+	writeJSON(w, stdhttp.StatusOK, map[string]string{"status": "ready"})
+}
+
+func (h *Handler) CreateTask(w stdhttp.ResponseWriter, r *stdhttp.Request) {
+	var input workflow.CreateTaskInput
+	if err := json.NewDecoder(r.Body).Decode(&input); err != nil {
+		writeError(w, stdhttp.StatusBadRequest, "invalid JSON body")
+		return
+	}
+
+	task, err := h.workflow.CreateTask(r.Context(), input)
+	if err != nil {
+		h.writeServiceError(w, err)
+		return
+	}
+
+	writeJSON(w, stdhttp.StatusCreated, map[string]string{
+		"id":     task.ID,
+		"status": task.Status,
+	})
+}
+
+func (h *Handler) GetTask(w stdhttp.ResponseWriter, r *stdhttp.Request) {
+	task, err := h.workflow.GetTask(r.Context(), chi.URLParam(r, "id"))
+	if err != nil {
+		h.writeServiceError(w, err)
+		return
+	}
+
+	writeJSON(w, stdhttp.StatusOK, task)
+}
+
+func (h *Handler) ListTasks(w stdhttp.ResponseWriter, r *stdhttp.Request) {
+	limit := int32(20)
+	if rawLimit := r.URL.Query().Get("limit"); rawLimit != "" {
+		parsed, err := strconv.Atoi(rawLimit)
+		if err != nil || parsed < 1 {
+			writeError(w, stdhttp.StatusBadRequest, "limit must be a positive integer")
+			return
+		}
+		limit = int32(parsed)
+	}
+
+	tasks, err := h.workflow.ListTasks(r.Context(), limit)
+	if err != nil {
+		h.writeServiceError(w, err)
+		return
+	}
+
+	writeJSON(w, stdhttp.StatusOK, tasks)
+}
+
+func (h *Handler) EnqueueTask(w stdhttp.ResponseWriter, r *stdhttp.Request) {
+	task, err := h.workflow.EnqueueTask(r.Context(), chi.URLParam(r, "id"))
+	if err != nil {
+		h.writeServiceError(w, err)
+		return
+	}
+
+	writeJSON(w, stdhttp.StatusOK, map[string]string{
+		"id":     task.ID,
+		"status": task.Status,
+	})
+}
+
+func (h *Handler) writeServiceError(w stdhttp.ResponseWriter, err error) {
+	switch {
+	case errors.Is(err, workflow.ErrInvalidTaskInput):
+		writeError(w, stdhttp.StatusBadRequest, err.Error())
+	case errors.Is(err, workflow.ErrTaskCannotBeEnqueued):
+		writeError(w, stdhttp.StatusConflict, err.Error())
+	case errors.Is(err, pgx.ErrNoRows):
+		writeError(w, stdhttp.StatusNotFound, "task not found")
+	default:
+		if h.logger != nil {
+			h.logger.Error("request failed", "error", err)
+		}
+		writeError(w, stdhttp.StatusInternalServerError, "internal server error")
+	}
+}
+
+const readyTimeout = 2 * time.Second
+
+func writeJSON(w stdhttp.ResponseWriter, status int, value any) {
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(status)
+	_ = json.NewEncoder(w).Encode(value)
+}
+
+func writeError(w stdhttp.ResponseWriter, status int, message string) {
+	writeJSON(w, status, map[string]string{"error": message})
+}
diff --git a/internal/http/middleware.go b/internal/http/middleware.go
new file mode 100644
index 0000000..d08d153
--- /dev/null
+++ b/internal/http/middleware.go
@@ -0,0 +1,37 @@
+package http
+
+import (
+	"log/slog"
+	stdhttp "net/http"
+	"time"
+)
+
+type statusRecorder struct {
+	stdhttp.ResponseWriter
+	status int
+}
+
+func (r *statusRecorder) WriteHeader(status int) {
+	r.status = status
+	r.ResponseWriter.WriteHeader(status)
+}
+
+func loggingMiddleware(logger *slog.Logger) func(stdhttp.Handler) stdhttp.Handler {
+	return func(next stdhttp.Handler) stdhttp.Handler {
+		return stdhttp.HandlerFunc(func(w stdhttp.ResponseWriter, r *stdhttp.Request) {
+			start := time.Now()
+			recorder := &statusRecorder{ResponseWriter: w, status: stdhttp.StatusOK}
+			next.ServeHTTP(recorder, r)
+
+			if logger != nil {
+				logger.Info(
+					"http request",
+					"method", r.Method,
+					"path", r.URL.Path,
+					"status", recorder.status,
+					"duration", time.Since(start).String(),
+				)
+			}
+		})
+	}
+}
diff --git a/internal/http/router.go b/internal/http/router.go
new file mode 100644
index 0000000..8de899c
--- /dev/null
+++ b/internal/http/router.go
@@ -0,0 +1,29 @@
+package http
+
+import (
+	"log/slog"
+	stdhttp "net/http"
+
+	"github.com/go-chi/chi/v5"
+	chimiddleware "github.com/go-chi/chi/v5/middleware"
+)
+
+func NewRouter(handler *Handler, logger *slog.Logger) stdhttp.Handler {
+	r := chi.NewRouter()
+	r.Use(chimiddleware.RequestID)
+	r.Use(chimiddleware.RealIP)
+	r.Use(loggingMiddleware(logger))
+	r.Use(chimiddleware.Recoverer)
+
+	r.Get("/healthz", handler.Healthz)
+	r.Get("/readyz", handler.Readyz)
+
+	r.Route("/api", func(r chi.Router) {
+		r.Post("/tasks", handler.CreateTask)
+		r.Get("/tasks", handler.ListTasks)
+		r.Get("/tasks/{id}", handler.GetTask)
+		r.Post("/tasks/{id}/enqueue", handler.EnqueueTask)
+	})
+
+	return r
+}
diff --git a/internal/notification/model.go b/internal/notification/model.go
new file mode 100644
index 0000000..13051e7
--- /dev/null
+++ b/internal/notification/model.go
@@ -0,0 +1,8 @@
+package notification
+
+type TaskNotification struct {
+	TaskID  string
+	Title   string
+	Status  string
+	Message string
+}
diff --git a/internal/notification/service.go b/internal/notification/service.go
new file mode 100644
index 0000000..690d39a
--- /dev/null
+++ b/internal/notification/service.go
@@ -0,0 +1,36 @@
+package notification
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/nomadcode/nomadcode-core/internal/adapters/mattermost"
+)
+
+type Service struct {
+	mattermost *mattermost.Client
+	logger     *slog.Logger
+}
+
+func NewService(mattermostClient *mattermost.Client, logger *slog.Logger) *Service {
+	return &Service{
+		mattermost: mattermostClient,
+		logger:     logger,
+	}
+}
+
+func (s *Service) NotifyTaskCompleted(ctx context.Context, input TaskNotification) error {
+	if s.logger != nil {
+		s.logger.Info("task completed notification requested", "task_id", input.TaskID)
+	}
+	if s.mattermost == nil {
+		return nil
+	}
+
+	return s.mattermost.SendTaskNotification(ctx, mattermost.TaskNotificationInput{
+		TaskID:  input.TaskID,
+		Title:   input.Title,
+		Status:  input.Status,
+		Message: input.Message,
+	})
+}
diff --git a/internal/scheduler/jobs.go b/internal/scheduler/jobs.go
new file mode 100644
index 0000000..747be9c
--- /dev/null
+++ b/internal/scheduler/jobs.go
@@ -0,0 +1,86 @@
+package scheduler
+
+import (
+	"context"
+	"encoding/json"
+	"log/slog"
+	"time"
+
+	"github.com/riverqueue/river"
+
+	"github.com/nomadcode/nomadcode-core/internal/notification"
+	"github.com/nomadcode/nomadcode-core/internal/storage"
+	"github.com/nomadcode/nomadcode-core/internal/workflow"
+)
+
+type TaskJobArgs struct {
+	TaskID string `json:"task_id"`
+}
+
+func (TaskJobArgs) Kind() string {
+	return "task_run"
+}
+
+type TaskWorker struct {
+	river.WorkerDefaults[TaskJobArgs]
+
+	Store         *storage.Store
+	Notifications *notification.Service
+	Logger        *slog.Logger
+}
+
+func (w *TaskWorker) Work(ctx context.Context, job *river.Job[TaskJobArgs]) error {
+	taskID := job.Args.TaskID
+	if w.Logger != nil {
+		w.Logger.Info("task job started", "task_id", taskID)
+	}
+
+	task, err := w.Store.UpdateStatus(ctx, taskID, string(workflow.StatusRunning))
+	if err != nil {
+		return err
+	}
+
+	select {
+	case <-time.After(500 * time.Millisecond):
+	case <-ctx.Done():
+		w.markFailed(taskID, ctx.Err())
+		return ctx.Err()
+	}
+
+	result := json.RawMessage(`{"message":"dummy task completed"}`)
+	task, err = w.Store.CompleteTask(ctx, taskID, result)
+	if err != nil {
+		w.markFailed(taskID, err)
+		return err
+	}
+
+	if w.Notifications != nil {
+		err = w.Notifications.NotifyTaskCompleted(ctx, notification.TaskNotification{
+			TaskID:  task.ID,
+			Title:   task.Title,
+			Status:  task.Status,
+			Message: "dummy task completed",
+		})
+		if err != nil && w.Logger != nil {
+			w.Logger.Warn("task notification failed", "task_id", taskID, "error", err)
+		}
+	}
+
+	if w.Logger != nil {
+		w.Logger.Info("task job completed", "task_id", taskID)
+	}
+	return nil
+}
+
+func (w *TaskWorker) markFailed(taskID string, err error) {
+	if err == nil || w.Store == nil {
+		return
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+	defer cancel()
+
+	if _, failErr := w.Store.FailTask(ctx, taskID, err.Error()); failErr != nil && w.Logger != nil {
+		w.Logger.Error("failed to mark task failed", "task_id", taskID, "error", failErr)
+	}
+}
diff --git a/internal/scheduler/river.go b/internal/scheduler/river.go
new file mode 100644
index 0000000..c2d5d83
--- /dev/null
+++ b/internal/scheduler/river.go
@@ -0,0 +1,81 @@
+package scheduler
+
+import (
+	"context"
+	"log/slog"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/riverqueue/river"
+	"github.com/riverqueue/river/riverdriver/riverpgxv5"
+	"github.com/riverqueue/river/rivermigrate"
+
+	"github.com/nomadcode/nomadcode-core/internal/notification"
+	"github.com/nomadcode/nomadcode-core/internal/storage"
+)
+
+type Client struct {
+	river  *river.Client[pgx.Tx]
+	driver *riverpgxv5.Driver
+	logger *slog.Logger
+}
+
+func New(pool *pgxpool.Pool, store *storage.Store, notifications *notification.Service, logger *slog.Logger) (*Client, error) {
+	workers := river.NewWorkers()
+	river.AddWorker(workers, &TaskWorker{
+		Store:         store,
+		Notifications: notifications,
+		Logger:        logger,
+	})
+
+	driver := riverpgxv5.New(pool)
+	riverClient, err := river.NewClient[pgx.Tx](driver, &river.Config{
+		Logger: logger,
+		Queues: map[string]river.QueueConfig{
+			river.QueueDefault: {MaxWorkers: 2},
+		},
+		Workers:     workers,
+		MaxAttempts: 3,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return &Client{
+		river:  riverClient,
+		driver: driver,
+		logger: logger,
+	}, nil
+}
+
+func (c *Client) Migrate(ctx context.Context) error {
+	migrator, err := rivermigrate.New[pgx.Tx](c.driver, &rivermigrate.Config{
+		Logger: c.logger,
+	})
+	if err != nil {
+		return err
+	}
+
+	result, err := migrator.Migrate(ctx, rivermigrate.DirectionUp, nil)
+	if err != nil {
+		return err
+	}
+	if c.logger != nil && len(result.Versions) > 0 {
+		c.logger.Info("river migrations applied", "count", len(result.Versions))
+	}
+
+	return nil
+}
+
+func (c *Client) Start(ctx context.Context) error {
+	return c.river.Start(ctx)
+}
+
+func (c *Client) Stop(ctx context.Context) error {
+	return c.river.Stop(ctx)
+}
+
+func (c *Client) EnqueueTask(ctx context.Context, taskID string) error {
+	_, err := c.river.Insert(ctx, TaskJobArgs{TaskID: taskID}, nil)
+	return err
+}
diff --git a/internal/storage/store.go b/internal/storage/store.go
new file mode 100644
index 0000000..65453c6
--- /dev/null
+++ b/internal/storage/store.go
@@ -0,0 +1,56 @@
+package storage
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/nomadcode/nomadcode-core/internal/db"
+)
+
+type Task = db.Task
+
+type Store struct {
+	queries *db.Queries
+}
+
+func NewStore(pool *pgxpool.Pool) *Store {
+	return &Store{queries: db.New(pool)}
+}
+
+func (s *Store) CreateTask(ctx context.Context, title, source string, payload json.RawMessage) (db.Task, error) {
+	return s.queries.CreateTask(ctx, db.CreateTaskParams{
+		Title:   title,
+		Source:  source,
+		Payload: payload,
+	})
+}
+
+func (s *Store) GetTask(ctx context.Context, id string) (db.Task, error) {
+	return s.queries.GetTask(ctx, id)
+}
+
+func (s *Store) ListTasks(ctx context.Context, limit int32) ([]db.Task, error) {
+	return s.queries.ListTasks(ctx, limit)
+}
+
+func (s *Store) UpdateStatus(ctx context.Context, id, status string) (db.Task, error) {
+	return s.queries.UpdateTaskStatus(ctx, db.UpdateTaskStatusParams{
+		ID:     id,
+		Status: status,
+	})
+}
+
+func (s *Store) CompleteTask(ctx context.Context, id string, result json.RawMessage) (db.Task, error) {
+	return s.queries.CompleteTask(ctx, db.CompleteTaskParams{
+		ID:     id,
+		Result: result,
+	})
+}
+
+func (s *Store) FailTask(ctx context.Context, id, message string) (db.Task, error) {
+	return s.queries.FailTask(ctx, db.FailTaskParams{
+		ID:    id,
+		Error: message,
+	})
+}
diff --git a/internal/workflow/model.go b/internal/workflow/model.go
new file mode 100644
index 0000000..759f4f1
--- /dev/null
+++ b/internal/workflow/model.go
@@ -0,0 +1,20 @@
+package workflow
+
+import "encoding/json"
+
+type TaskStatus string
+
+const (
+	StatusPending   TaskStatus = "pending"
+	StatusQueued    TaskStatus = "queued"
+	StatusRunning   TaskStatus = "running"
+	StatusCompleted TaskStatus = "completed"
+	StatusFailed    TaskStatus = "failed"
+	StatusCanceled  TaskStatus = "canceled"
+)
+
+type CreateTaskInput struct {
+	Title   string          `json:"title"`
+	Source  string          `json:"source"`
+	Payload json.RawMessage `json:"payload"`
+}
diff --git a/internal/workflow/service.go b/internal/workflow/service.go
new file mode 100644
index 0000000..5ae3133
--- /dev/null
+++ b/internal/workflow/service.go
@@ -0,0 +1,102 @@
+package workflow
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"log/slog"
+	"strings"
+
+	"github.com/nomadcode/nomadcode-core/internal/storage"
+)
+
+var (
+	ErrInvalidTaskInput     = errors.New("invalid task input")
+	ErrTaskCannotBeEnqueued = errors.New("task cannot be enqueued in current status")
+)
+
+type TaskEnqueuer interface {
+	EnqueueTask(ctx context.Context, taskID string) error
+}
+
+type Service struct {
+	store    *storage.Store
+	enqueuer TaskEnqueuer
+	logger   *slog.Logger
+}
+
+func NewService(store *storage.Store, enqueuer TaskEnqueuer, logger *slog.Logger) *Service {
+	return &Service{
+		store:    store,
+		enqueuer: enqueuer,
+		logger:   logger,
+	}
+}
+
+func (s *Service) CreateTask(ctx context.Context, input CreateTaskInput) (storage.Task, error) {
+	title := strings.TrimSpace(input.Title)
+	source := strings.TrimSpace(input.Source)
+	if title == "" || source == "" {
+		return storage.Task{}, ErrInvalidTaskInput
+	}
+
+	payload := input.Payload
+	if len(payload) == 0 || string(payload) == "null" {
+		payload = json.RawMessage(`{}`)
+	}
+	if !json.Valid(payload) {
+		return storage.Task{}, ErrInvalidTaskInput
+	}
+
+	return s.store.CreateTask(ctx, title, source, payload)
+}
+
+func (s *Service) GetTask(ctx context.Context, id string) (storage.Task, error) {
+	return s.store.GetTask(ctx, id)
+}
+
+func (s *Service) ListTasks(ctx context.Context, limit int32) ([]storage.Task, error) {
+	if limit <= 0 {
+		limit = 20
+	}
+	if limit > 100 {
+		limit = 100
+	}
+	return s.store.ListTasks(ctx, limit)
+}
+
+func (s *Service) EnqueueTask(ctx context.Context, id string) (storage.Task, error) {
+	task, err := s.store.GetTask(ctx, id)
+	if err != nil {
+		return storage.Task{}, err
+	}
+	if !canEnqueue(task.Status) {
+		return storage.Task{}, ErrTaskCannotBeEnqueued
+	}
+
+	queuedTask, err := s.store.UpdateStatus(ctx, id, string(StatusQueued))
+	if err != nil {
+		return storage.Task{}, err
+	}
+
+	if s.enqueuer == nil {
+		return queuedTask, errors.New("task enqueuer is not configured")
+	}
+	if err := s.enqueuer.EnqueueTask(ctx, id); err != nil {
+		if _, failErr := s.store.FailTask(ctx, id, err.Error()); failErr != nil && s.logger != nil {
+			s.logger.Error("failed to mark task enqueue error", "task_id", id, "error", failErr)
+		}
+		return queuedTask, err
+	}
+
+	return queuedTask, nil
+}
+
+func canEnqueue(status string) bool {
+	switch TaskStatus(status) {
+	case StatusPending, StatusFailed:
+		return true
+	default:
+		return false
+	}
+}
diff --git a/migrations/00001_create_tasks.sql b/migrations/00001_create_tasks.sql
new file mode 100644
index 0000000..4bd9dbb
--- /dev/null
+++ b/migrations/00001_create_tasks.sql
@@ -0,0 +1,23 @@
+-- +goose Up
+CREATE EXTENSION IF NOT EXISTS pgcrypto;
+
+CREATE TABLE IF NOT EXISTS tasks (
+    id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+    title text NOT NULL,
+    source text NOT NULL,
+    status text NOT NULL DEFAULT 'pending',
+    payload jsonb NOT NULL DEFAULT '{}',
+    result jsonb NOT NULL DEFAULT '{}',
+    error text NULL,
+    created_at timestamptz NOT NULL DEFAULT now(),
+    updated_at timestamptz NOT NULL DEFAULT now(),
+    CONSTRAINT tasks_status_check CHECK (
+        status IN ('pending', 'queued', 'running', 'completed', 'failed', 'canceled')
+    )
+);
+
+CREATE INDEX IF NOT EXISTS tasks_status_idx ON tasks (status);
+CREATE INDEX IF NOT EXISTS tasks_created_at_idx ON tasks (created_at DESC);
+
+-- +goose Down
+DROP TABLE IF EXISTS tasks;
diff --git a/queries/tasks.sql b/queries/tasks.sql
new file mode 100644
index 0000000..1265254
--- /dev/null
+++ b/queries/tasks.sql
@@ -0,0 +1,33 @@
+-- name: CreateTask :one
+INSERT INTO tasks (title, source, payload)
+VALUES ($1, $2, $3)
+RETURNING *;
+
+-- name: GetTask :one
+SELECT *
+FROM tasks
+WHERE id::text = $1;
+
+-- name: ListTasks :many
+SELECT *
+FROM tasks
+ORDER BY created_at DESC
+LIMIT $1;
+
+-- name: UpdateTaskStatus :one
+UPDATE tasks
+SET status = $2, updated_at = now()
+WHERE id::text = $1
+RETURNING *;
+
+-- name: CompleteTask :one
+UPDATE tasks
+SET status = 'completed', result = $2, error = NULL, updated_at = now()
+WHERE id::text = $1
+RETURNING *;
+
+-- name: FailTask :one
+UPDATE tasks
+SET status = 'failed', error = $2, updated_at = now()
+WHERE id::text = $1
+RETURNING *;
diff --git a/sqlc.yaml b/sqlc.yaml
new file mode 100644
index 0000000..8c2acf0
--- /dev/null
+++ b/sqlc.yaml
@@ -0,0 +1,18 @@
+version: "2"
+sql:
+  - engine: postgresql
+    schema: migrations
+    queries: queries
+    gen:
+      go:
+        package: generated
+        out: internal/db/generated
+        sql_package: pgx/v5
+        emit_json_tags: true
+        overrides:
+          - db_type: uuid
+            go_type: string
+          - db_type: jsonb
+            go_type:
+              import: encoding/json
+              type: RawMessage