feat: expand companion platform, device controls, and memoir workflows

Add customer and operator login, BLE provisioning, device fleet controls, call memory, memoir generation, and refreshed family and maintenance portals. Include API contracts, migrations, firmware sources, tests, assets, and deployment documentation.

internal/workflowbridge/models_test.go

@@ -0,0 +1,58 @@
+package workflowbridge
+
+import (
+	"context"
+	"data-terminal-cloud/internal/dify"
+	"data-terminal-cloud/internal/extraction"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestModelSelectionValidation(t *testing.T) {
+	for _, tc := range []struct {
+		step, model, custom, want string
+		invalid                   bool
+	}{
+		{"classify", "", "", DefaultTextModel, false},
+		{"write-book", "doubao-seed-2-1-pro-260915", "", "doubao-seed-2-1-pro-260915", false},
+		{"illustrate", "__custom__", "ep-test123", "ep-test123", false},
+		{"daily", "__custom__", "", "", true},
+		{"daily", "https://example.org", "", "", true},
+		{"write-book", DefaultImageModel, "", "", true},
+		{"illustrate", DefaultTextModel, "", "", true},
+	} {
+		got, err := selectedModel(tc.step, tc.model, tc.custom)
+		if got != tc.want || (err != nil) != tc.invalid {
+			t.Errorf("%+v: %q %v", tc, got, err)
+		}
+	}
+}
+
+func TestIndependentModelsAndRetryRetainsOriginalSelection(t *testing.T) {
+	e := &fixtureEditor{}
+	s := New("secret", e, e, overdueImages{})
+	selected := map[string]string{}
+	s.EditorForModel = func(step, model string) (Editor, error) { selected[step] = model; return e, nil }
+	srv := httptest.NewServer(s)
+	defer srv.Close()
+	b := dify.NewBridge(srv.URL, "secret")
+	ticket, err := b.Register(context.Background(), "extract", extraction.GenerationInput{Content: "[turn-1] 长者：1970年进厂。"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer b.Forget(ticket)
+	c := s.find(ticket.ID)
+	out := s.step(c, "classify", stepInput{Model: "doubao-seed-2-1-lite-260915"})
+	if out["success"] != true {
+		t.Fatal(out)
+	}
+	s.step(c, "daily", stepInput{Model: DefaultTextModel})
+	retry := s.step(c, "classify", stepInput{Model: DefaultBookModel})
+	if retry["model"] != out["model"] || e.calls.Load() != 2 || selected["classify"] != "doubao-seed-2-1-lite-260915" || selected["daily"] != DefaultTextModel {
+		t.Fatalf("wrong selection: %v %v", selected, retry)
+	}
+	merged := s.step(c, "dedup", stepInput{})
+	if merged["success"] != true || c.Result.ModelRef != "dify:doubao-seed-2-1-lite-260915" {
+		t.Fatalf("actual model attribution lost: %v %q", merged, c.Result.ModelRef)
+	}
+}