feat(01-01): boot hello app and dispatch greeter:hello

- Add party plugin registry with Register-before-Boot activation
- Add backpack, compass, bonfire, and pact capability interfaces
- Add examples/hello with two compiled plugin modules

backpack/app_test.go

@@ -0,0 +1,37 @@
+package backpack
+
+import (
+	"go/parser"
+	"go/token"
+	"os"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+func TestDoesNotImportParty(t *testing.T) {
+	entries, err := os.ReadDir(".")
+	if err != nil {
+		t.Fatal(err)
+	}
+	fset := token.NewFileSet()
+	for _, entry := range entries {
+		name := entry.Name()
+		if entry.IsDir() || !strings.HasSuffix(name, ".go") || strings.HasSuffix(name, "_test.go") {
+			continue
+		}
+		file, err := parser.ParseFile(fset, name, nil, parser.ImportsOnly)
+		if err != nil {
+			t.Fatal(err)
+		}
+		for _, spec := range file.Imports {
+			path, err := strconv.Unquote(spec.Path.Value)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if path == "git.golem15.com/golem15/summercms/party" {
+				t.Fatalf("%s imports party", name)
+			}
+		}
+	}
+}