Implement continuity handoffs and pickup validation

internal/continuity/continuity_test.go

@@ -0,0 +1,56 @@
+package continuity
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+
+	"orchestra/internal/store"
+)
+
+func TestHandoffCASAndPickup(t *testing.T) {
+	root := t.TempDir()
+	run := func(a ...string) {
+		c := exec.Command("git", append([]string{"-C", root}, a...)...)
+		c.Env = append(os.Environ(), "GIT_AUTHOR_NAME=test", "GIT_AUTHOR_EMAIL=test@example", "GIT_COMMITTER_NAME=test", "GIT_COMMITTER_EMAIL=test@example")
+		if b, e := c.CombinedOutput(); e != nil {
+			t.Fatalf("git: %s %v", b, e)
+		}
+	}
+	os.WriteFile(filepath.Join(root, "TASK.md"), []byte("original"), 0644)
+	run("init")
+	run("add", "TASK.md")
+	run("commit", "-m", "init")
+	head := runOut(t, root, "rev-parse", "HEAD")
+	task := sha256.Sum256([]byte("original"))
+	s, _ := store.Open(t.TempDir())
+	h := Handoff{Meta: Meta{ID: "h1", Reason: "manual"}, Anchor: Anchor{GitSHA: head, Branch: "main"}, Goal: "ship", DoneWhen: []string{"tests pass"}, Action: "test", Command: "go test ./...", LastResult: Result{AtSHA: head}}
+	ref, e := Save(h, s)
+	if e != nil {
+		t.Fatal(e)
+	}
+	got, e := Load(ref, s)
+	if e != nil || got.Meta.ID != "h1" {
+		t.Fatalf("load: %v", e)
+	}
+	if e = ValidatePickup(root, got, hex.EncodeToString(task[:])); e != nil {
+		t.Fatal(e)
+	}
+}
+func runOut(t *testing.T, root string, a ...string) string {
+	b, e := exec.Command("git", append([]string{"-C", root}, a...)...).Output()
+	if e != nil {
+		t.Fatal(e)
+	}
+	return string(b[:len(b)-1])
+}
+
+func TestDecodeRejectsUnknownKnowledgeFields(t *testing.T) {
+	_, e := Decode([]byte(`{"meta":{"id":"x","reason":"manual","rotation_index":0},"unknown":1}`))
+	if e == nil {
+		t.Fatal("expected strict schema error")
+	}
+}