feat(db): add project personas and skills tables

* Introduce project_personas table with foreign keys to projects and agent_personas
* Add project_skills table with foreign key to projects and agent_skills
* Include override boolean field in agent_persona_skills and project_skills
* Update schema and migration files to reflect new tables and fields
* Enhance CORS handling to reflect request origin

internal/mcpserver/server_test.go

@@ -5,6 +5,7 @@ import (
 	"net/http/httptest"
 	"reflect"
 	"sort"
+	"strings"
 	"testing"
 	"time"
 
@@ -60,6 +61,26 @@ func TestNewListsStoredFileResourceTemplate(t *testing.T) {
 	}
 }
 
+func TestNewExposesWorldModelIntroResource(t *testing.T) {
+	cs := newStreamableTestClient(t)
+
+	listed, err := cs.ListResources(context.Background(), nil)
+	if err != nil {
+		t.Fatalf("ListResources() error = %v", err)
+	}
+	if len(listed.Resources) != 1 || listed.Resources[0].URI != "amcs://world-model/intro" {
+		t.Fatalf("ListResources() = %#v, want world model intro", listed.Resources)
+	}
+
+	read, err := cs.ReadResource(context.Background(), &mcp.ReadResourceParams{URI: "amcs://world-model/intro"})
+	if err != nil {
+		t.Fatalf("ReadResource() error = %v", err)
+	}
+	if len(read.Contents) != 1 || !strings.Contains(read.Contents[0].Text, "bootstrap_world_model") {
+		t.Fatalf("ReadResource() did not return bootstrap instructions: %#v", read.Contents)
+	}
+}
+
 func newStreamableTestClient(t *testing.T) *mcp.ClientSession {
 	t.Helper()