Switch to modernc.org/sqlite for CGO-free cross-compilation

Replace mattn/go-sqlite3 with modernc.org/sqlite to eliminate CGO
dependency and simplify cross-platform builds. The modernc.org/sqlite
driver provides a pure Go SQLite implementation compatible with the
database/sql interface.

Changes:

Database Driver:
• Replace mattn/go-sqlite3 with modernc.org/sqlite across all modules
• Register modernc.org/sqlite as "sqlite3" driver in memory package for Ent compatibility
• Update SQLite connection string pragma syntax from _fk=1 to _pragma=foreign_keys(1)
• Update journal mode pragma from _journal=WAL to _pragma=journal_mode(WAL)
• Update busy timeout pragma from _busy_timeout=5000 to _pragma=busy_timeout(5000)

Dependencies:
• Update backend/go.mod to include modernc.org/sqlite v1.33.1 and related dependencies
• Update frontend/cli/go.mod to include modernc.org/sqlite v1.33.1
• Add supporting libraries: modernc.org/libc, mathutil, memory, token, strutil, gc/v3
• Add adrg/xdg v0.5.3 for platform-specific paths

Testing:
• Update all test files to import modernc.org/sqlite instead of go-sqlite3
• Update test connection strings to use new pragma syntax
• Add EventBus and MessageHub to test setup where missing

This change eliminates the need for CGO during compilation, enabling
easier cross-compilation for multiple platforms and architectures
without requiring a C compiler toolchain.

Co-authored-by: construct-agent <noreply@construct.sh>

Author: Furisto

backend/api/agent_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
-	_ "github.com/mattn/go-sqlite3"
+	_ "modernc.org/sqlite"
 	"google.golang.org/protobuf/testing/protocmp"
 )
 

backend/api/api_test.go

@@ -118,7 +118,7 @@ func (s *ServiceTestSetup[Request, Response]) RunServiceTests(t *testing.T, scen
 }
 
 func DefaultTestHandlerOptions(t *testing.T) HandlerOptions {
-	db, err := memory.Open(dialect.SQLite, "file:construct_test?mode=memory&cache=private&_fk=1")
+	db, err := memory.Open(dialect.SQLite, "file:construct_test?mode=memory&cache=private&_pragma=foreign_keys(1)")
 	if err != nil {
 		t.Fatalf("failed opening connection to sqlite: %v", err)
 	}
@@ -135,10 +135,18 @@ func DefaultTestHandlerOptions(t *testing.T) HandlerOptions {
 
 	runtime := &MockAgentRuntime{}
 
+	eventBus := event.NewBus(nil)
+	messageHub, err := event.NewMessageHub(db)
+	if err != nil {
+		t.Fatalf("failed creating message hub: %v", err)
+	}
+
 	return HandlerOptions{
 		DB:           db,
 		Encryption:   encryption,
 		AgentRuntime: runtime,
+		EventBus:     eventBus,
+		MessageHub:   messageHub,
 		Analytics:    analytics.NewInMemoryClient(),
 	}
 }

backend/api/message_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
-	_ "github.com/mattn/go-sqlite3"
+	_ "modernc.org/sqlite"
 	"google.golang.org/protobuf/testing/protocmp"
 )
 

backend/api/model_provider_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
-	_ "github.com/mattn/go-sqlite3"
+	_ "modernc.org/sqlite"
 	"google.golang.org/protobuf/testing/protocmp"
 )
 

backend/api/model_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
 	"github.com/googleapis/go-type-adapters/adapters"
-	_ "github.com/mattn/go-sqlite3"
+	_ "modernc.org/sqlite"
 	"google.golang.org/protobuf/testing/protocmp"
 )
 

backend/api/task_test.go

@@ -12,7 +12,7 @@ import (
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
 	"github.com/google/uuid"
-	_ "github.com/mattn/go-sqlite3"
+	_ "modernc.org/sqlite"
 	"google.golang.org/protobuf/testing/protocmp"
 )
 
@@ -71,7 +71,7 @@ func TestCreateTask(t *testing.T) {
 						Spec: &v1.TaskSpec{
 							AgentId:      strPtr(agentID.String()),
 							Workspace:    "/tmp/test",
-							DesiredPhase: v1.TaskPhase_TASK_PHASE_AWAITING,
+							DesiredPhase: v1.TaskPhase_TASK_PHASE_RUNNING,
 						},
 						Status: &v1.TaskStatus{
 							Usage: &v1.TaskUsage{},
@@ -139,7 +139,7 @@ func TestGetTask(t *testing.T) {
 						},
 						Spec: &v1.TaskSpec{
 							AgentId:      strPtr(agentID.String()),
-							DesiredPhase: v1.TaskPhase_TASK_PHASE_AWAITING,
+							DesiredPhase: v1.TaskPhase_TASK_PHASE_RUNNING,
 						},
 						Status: &v1.TaskStatus{
 							Usage: &v1.TaskUsage{},
@@ -209,7 +209,7 @@ func TestListTasks(t *testing.T) {
 							},
 							Spec: &v1.TaskSpec{
 								AgentId:      strPtr(agentID.String()),
-								DesiredPhase: v1.TaskPhase_TASK_PHASE_AWAITING,
+								DesiredPhase: v1.TaskPhase_TASK_PHASE_RUNNING,
 							},
 							Status: &v1.TaskStatus{
 								Usage: &v1.TaskUsage{},
@@ -301,7 +301,7 @@ func TestListTasks(t *testing.T) {
 							},
 							Spec: &v1.TaskSpec{
 								AgentId:      strPtr(agentID.String()),
-								DesiredPhase: v1.TaskPhase_TASK_PHASE_AWAITING,
+								DesiredPhase: v1.TaskPhase_TASK_PHASE_RUNNING,
 							},
 							Status: &v1.TaskStatus{
 								Usage: &v1.TaskUsage{},
@@ -412,7 +412,7 @@ func TestUpdateTask(t *testing.T) {
 						},
 						Spec: &v1.TaskSpec{
 							AgentId:      strPtr(agentID2.String()),
-							DesiredPhase: v1.TaskPhase_TASK_PHASE_AWAITING,
+							DesiredPhase: v1.TaskPhase_TASK_PHASE_RUNNING,
 						},
 						Status: &v1.TaskStatus{
 							Usage: &v1.TaskUsage{},

backend/go.mod

@@ -9,12 +9,12 @@ require (
 	github.com/bmatcuk/doublestar/v4 v4.8.1
 	github.com/cenkalti/backoff/v5 v5.0.3
 	github.com/furisto/construct/api/go v0.0.0-00010101000000-000000000000
+	github.com/furisto/construct/shared v0.0.0-00010101000000-000000000000
 	github.com/google/go-cmp v0.7.0
 	github.com/google/uuid v1.6.0
 	github.com/googleapis/go-type-adapters v1.0.1
 	github.com/grafana/sobek v0.0.0-20250320150027-203dc85b6d98
 	github.com/invopop/jsonschema v0.13.0
-	github.com/mattn/go-sqlite3 v1.14.27
 	github.com/maypok86/otter v1.2.4
 	github.com/openai/openai-go v1.2.0
 	github.com/posthog/posthog-go v1.5.12
@@ -28,6 +28,7 @@ require (
 	google.golang.org/genproto v0.0.0-20240903143218-8af14fe29dc1
 	google.golang.org/protobuf v1.36.8
 	k8s.io/client-go v0.34.1
+	modernc.org/sqlite v1.33.1
 )
 
 require (
@@ -38,6 +39,7 @@ require (
 	cloud.google.com/go/auth v0.9.3 // indirect
 	cloud.google.com/go/compute/metadata v0.6.0 // indirect
 	github.com/Masterminds/semver/v3 v3.4.0 // indirect
+	github.com/adrg/xdg v0.5.3 // indirect
 	github.com/agext/levenshtein v1.2.1 // indirect
 	github.com/apparentlymart/go-textseg/v13 v13.0.0 // indirect
 	github.com/apparentlymart/go-textseg/v15 v15.0.0 // indirect
@@ -47,9 +49,9 @@ require (
 	github.com/buger/jsonparser v1.1.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/danieljoos/wincred v1.2.2 // indirect
-	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dlclark/regexp2 v1.11.4 // indirect
 	github.com/dolthub/maphash v0.1.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/gammazero/deque v1.0.0 // indirect
 	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-openapi/inflect v0.19.0 // indirect
@@ -62,14 +64,16 @@ require (
 	github.com/gorilla/websocket v1.5.4-0.20250319132907-e064f32e3674 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/hashicorp/hcl/v2 v2.13.0 // indirect
-	github.com/hedwigz/entviz v0.0.0-20221011080911-9d47f6f1d818 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-sqlite3 v1.14.27 // indirect
 	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/common v0.66.1 // indirect
 	github.com/prometheus/procfs v0.16.1 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/tidwall/gjson v1.18.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.1 // indirect
@@ -84,17 +88,23 @@ require (
 	golang.org/x/crypto v0.41.0 // indirect
 	golang.org/x/mod v0.26.0 // indirect
 	golang.org/x/net v0.43.0 // indirect
-	golang.org/x/sync v0.16.0 // indirect
 	golang.org/x/sys v0.36.0 // indirect
 	golang.org/x/text v0.28.0 // indirect
 	golang.org/x/time v0.9.0 // indirect
-	golang.org/x/tools v0.35.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20250303144028-a0af3efb3deb // indirect
 	google.golang.org/grpc v1.72.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	k8s.io/apimachinery v0.34.1 // indirect
 	k8s.io/klog/v2 v2.130.1 // indirect
 	k8s.io/utils v0.0.0-20250604170112-4c0f3b243397 // indirect
+	modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 // indirect
+	modernc.org/libc v1.55.3 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.8.0 // indirect
+	modernc.org/strutil v1.2.0 // indirect
+	modernc.org/token v1.1.0 // indirect
 )
 
 replace github.com/furisto/construct/api/go => ../api/go
+
+replace github.com/furisto/construct/shared => ../shared