Count hand-valued assets into the wealth figure

A wealth figure that ignores the house is not a wealth figure. Assets
without a market feed - a house, a car, a private loan - are now added
by hand on the Wealth page with a stated value, a currency and the day
the estimate was made; a negative value records a liability. They are
registry entities in assets.finance like everything else, join the
per-currency totals immediately, and a currency held only in an asset
earns its own line.

internal/journal/codec.go

@@ -19,7 +19,7 @@ import (
 // registryFiles are the non-monthly journal files, in the order they are read
 // and written. A block's file is its kind pluralized, so this list and the
 // kinds accepted by parseDocument must stay in step.
-var registryFiles = []string{"accounts.finance", "categories.finance", "tags.finance", "merchants.finance", "instruments.finance"}
+var registryFiles = []string{"accounts.finance", "categories.finance", "tags.finance", "merchants.finance", "instruments.finance", "assets.finance"}
 
 type fieldSpan struct{ start, end int }
 type block struct {
@@ -140,7 +140,7 @@ func parseDocument(path string, raw []byte) (*document, error) {
 		}
 		header := strings.Fields(trimmed)
 		if len(header) != 2 || header[1] != "{" {
-			return fail(i+1, "expected 'account|category|tag|merchant|instrument|transaction {'")
+			return fail(i+1, "expected 'account|category|tag|merchant|instrument|asset|transaction {'")
 		}
 		kind := header[0]
 		var value any
@@ -155,6 +155,8 @@ func parseDocument(path string, raw []byte) (*document, error) {
 			value = &domain.Merchant{}
 		case "instrument":
 			value = &domain.Instrument{}
+		case "asset":
+			value = &domain.Asset{}
 		case "transaction":
 			value = &domain.Transaction{}
 		default:
@@ -237,6 +239,9 @@ func parseDocument(path string, raw []byte) (*document, error) {
 		case *domain.Instrument:
 			b.id = v.ID
 			b.value = *v
+		case *domain.Asset:
+			b.id = v.ID
+			b.value = *v
 		case *domain.Merchant:
 			if v.Aliases == nil {
 				v.Aliases = []string{}
@@ -342,6 +347,9 @@ func datasetFiles(d domain.Dataset) map[string]map[string]piece {
 	for _, v := range d.Instruments {
 		add("instruments.finance", "instrument", v.ID, v)
 	}
+	for _, v := range d.Assets {
+		add("assets.finance", "asset", v.ID, v)
+	}
 	for _, v := range d.Transactions {
 		month := v.Facts.BookingDate[:7]
 		add("journal/"+month[:4]+"/"+month+".finance", "transaction", v.Facts.ID, v)

internal/journal/store.go

@@ -435,7 +435,7 @@ func (s *Store) snapshot() (*snapshot, error) {
 	return snap, nil
 }
 func decodeSnapshot(raw map[string][]byte) (*snapshot, error) {
-	snap := &snapshot{raw: raw, docs: map[string]*document{}, revision: revision(raw), data: domain.Dataset{Accounts: []domain.Account{}, Categories: []domain.Category{}, Tags: []domain.Tag{}, Merchants: []domain.Merchant{}, Instruments: []domain.Instrument{}, Transactions: []domain.Transaction{}}}
+	snap := &snapshot{raw: raw, docs: map[string]*document{}, revision: revision(raw), data: domain.Dataset{Accounts: []domain.Account{}, Categories: []domain.Category{}, Tags: []domain.Tag{}, Merchants: []domain.Merchant{}, Instruments: []domain.Instrument{}, Assets: []domain.Asset{}, Transactions: []domain.Transaction{}}}
 	if len(raw) == 0 {
 		snap.data = domain.NewDataset()
 		return snap, nil
@@ -483,6 +483,8 @@ func decodeSnapshot(raw map[string][]byte) (*snapshot, error) {
 				snap.data.Merchants = append(snap.data.Merchants, v)
 			case domain.Instrument:
 				snap.data.Instruments = append(snap.data.Instruments, v)
+			case domain.Asset:
+				snap.data.Assets = append(snap.data.Assets, v)
 			case domain.Transaction:
 				snap.data.Transactions = append(snap.data.Transactions, v)
 			}

internal/journal/store_test.go

@@ -514,6 +514,30 @@ func TestNullListsPreserveUntouchedExternalBlockBytes(t *testing.T) {
 	}
 }
 
+// An asset is a registry entity like any other: committed to its own file and
+// identical after a fresh load, or the wealth it backs vanishes on restart.
+func TestAssetsSurviveCommitAndReload(t *testing.T) {
+	s := openTestStore(t)
+	d, r := loadTestStore(t, s)
+	d.Assets = []domain.Asset{{ID: "asset_house", Name: "House", Kind: "Real estate", Currency: "EUR", Value: "250000.00", ValuedAt: "2026-09-01"}}
+	commitTestStore(t, s, r, d)
+	if err := s.Close(); err != nil {
+		t.Fatal(err)
+	}
+	fresh, err := Open(s.dir)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer fresh.Close()
+	loaded, _ := loadTestStore(t, fresh)
+	if !reflect.DeepEqual(loaded.Assets, d.Assets) {
+		t.Errorf("assets after reload %+v, want %+v", loaded.Assets, d.Assets)
+	}
+	if raw := readTestFile(t, filepath.Join(s.dir, "assets.finance")); !bytes.Contains(raw, []byte(`asset {`)) {
+		t.Errorf("assets.finance holds no asset block: %s", raw)
+	}
+}
+
 func TestOversizedCommitCannotPublishUnreadableRecoveryIntent(t *testing.T) {
 	s := openTestStore(t)
 	original, r := loadTestStore(t, s)