feat: establish Orbit models, migrations and development baseline

weave/model/poll_policy_test.go

@@ -0,0 +1,38 @@
+package model
+
+import (
+	"errors"
+	core "git.yuntuo.hk/k2safe/orbit/model"
+	"testing"
+	"time"
+)
+
+func TestPollRecoveryPreservesBudgetAndDeadline(t *testing.T) {
+	now := time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC)
+	p := PollState{MaxRounds: 3, UsedRounds: 2, DeadlineAt: now.Add(time.Minute), NextPollAt: &now}
+	n, err := p.NextRound(now)
+	if err != nil || n != 3 {
+		t.Fatalf("next round: %d %v", n, err)
+	}
+	p.UsedRounds = 3
+	if _, err := p.NextRound(now); !errors.Is(err, ErrPollExhausted) {
+		t.Fatal("counter reset or limit bypass")
+	}
+	p.UsedRounds = 2
+	if _, err := p.NextRound(p.DeadlineAt); !errors.Is(err, ErrPollExhausted) {
+		t.Fatal("deadline equality permitted new round")
+	}
+	task := core.ID("00000000000000000000000000000001")
+	p.CurrentTaskID = &task
+	if _, err := p.NextRound(now); !errors.Is(err, ErrPollInFlight) {
+		t.Fatal("overlapping poll round permitted")
+	}
+}
+func TestResumeDoesNotClearReviewOrCancellation(t *testing.T) {
+	now := time.Now()
+	for _, i := range []Instance{{State: InstanceRunning, Paused: true}, {State: InstanceNeedsReview}, {State: InstanceCancelling}, {State: InstanceRunning, CancelRequestedAt: &now}, {State: InstanceSucceeded}, {State: InstanceState("future")}} {
+		if i.AllowsNewWork() {
+			t.Fatalf("allowed new work: %+v", i)
+		}
+	}
+}