chore: add copyright headers, CI tests, and sanitize gitignore

internal/infrastructure/sqlite/causal_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/causal_repo_test.go

@@ -1,12 +1,16 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (
 	"context"
 	"testing"
 
-	"github.com/syntrex-lab/gomcp/internal/domain/causal"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"github.com/syntrex-lab/gomcp/internal/domain/causal"
 )
 
 func newTestCausalRepo(t *testing.T) *CausalRepo {

internal/infrastructure/sqlite/crystal_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/crystal_repo_test.go

@@ -1,12 +1,16 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (
 	"context"
 	"testing"
 
-	"github.com/syntrex-lab/gomcp/internal/domain/crystal"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"github.com/syntrex-lab/gomcp/internal/domain/crystal"
 )
 
 func newTestCrystalRepo(t *testing.T) *CrystalRepo {

internal/infrastructure/sqlite/db.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 // Package sqlite provides SQLite-based persistence using modernc.org/sqlite (pure Go, no CGO).
 package sqlite
 

internal/infrastructure/sqlite/fact_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/fact_repo_test.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (
@@ -5,9 +9,9 @@ import (
 	"testing"
 	"time"
 
-	"github.com/syntrex-lab/gomcp/internal/domain/memory"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"github.com/syntrex-lab/gomcp/internal/domain/memory"
 )
 
 func newTestFactRepo(t *testing.T) *FactRepo {

internal/infrastructure/sqlite/interaction_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/interaction_repo_test.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/peer_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/soc_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (
@@ -570,4 +574,3 @@ func (r *SOCRepo) PurgeExpiredIncidents(retentionDays int) (int64, error) {
 	}
 	return result.RowsAffected()
 }
-

internal/infrastructure/sqlite/soc_repo_test.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/state_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/state_repo_test.go

@@ -1,12 +1,16 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (
 	"context"
 	"testing"
 
-	"github.com/syntrex-lab/gomcp/internal/domain/session"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"github.com/syntrex-lab/gomcp/internal/domain/session"
 )
 
 func newTestStateRepo(t *testing.T) *StateRepo {

internal/infrastructure/sqlite/synapse_repo.go

@@ -1,3 +1,7 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite
 
 import (

internal/infrastructure/sqlite/synapse_repo_test.go

@@ -1,13 +1,17 @@
+// Copyright 2026 Syntrex Lab. All rights reserved.
+// Use of this source code is governed by an Apache-2.0 license
+// that can be found in the LICENSE file.
+
 package sqlite_test
 
 import (
 	"context"
 	"testing"
 
-	"github.com/syntrex-lab/gomcp/internal/domain/memory"
-	"github.com/syntrex-lab/gomcp/internal/infrastructure/sqlite"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"github.com/syntrex-lab/gomcp/internal/domain/memory"
+	"github.com/syntrex-lab/gomcp/internal/infrastructure/sqlite"
 )
 
 func setupSynapseTest(t *testing.T) (*sqlite.SynapseRepo, *sqlite.FactRepo) {