ship(P02): merge Bread & Root Basket into milestone v0.1

---ci---
project: oy
phase: 2
milestone: v0.1
status: complete
ship: v0.0.2
---/ci---

Phase 2 shipped: Bread unit scale + Root Basket composition + Forge/Fold types.
9 tests passing. Lexicon compliant.

.ciagent/CHECKPOINT.json

@@ -1,5 +1,5 @@
 {
-  "phase": 1,
+  "phase": 2,
   "stage": "execute",
   "milestone": "v0.1",
   "phase_role": "execution",

x/bread/types/types.go

@@ -0,0 +1,76 @@
+package types
+
+import "encoding/json"
+
+const (
+	ModuleName   = "bread"
+	StoreKey     = ModuleName
+	RouterKey    = ModuleName
+	QuerierRoute = ModuleName
+
+	// Bread atomic unit = Grain (§4)
+	// 1 Bread = 10,000 Grain
+	GrainsPerBread = 10000
+
+	// Bread scale denominations (§4)
+	// Grain = 1 (atomic)
+	// Crumb = 100 Grain
+	// Bread = 10,000 Grain (~$1)
+	// Loaf = 10 Bread
+	// Batch = 100 Bread
+	// Cake = 1,000 Bread
+	// Bakery = 10,000 Bread
+	// Granary = 100,000 Bread
+	// Mill = 1,000,000 Bread
+	// Harvest = 10,000,000 Bread
+	// Earth = 100,000,000 Bread
+)
+
+// BreadScale defines the unit scale (§4)
+type BreadScale struct {
+	Name       string `json:"name" yaml:"name"`
+	GrainValue int64  `json:"grain_value" yaml:"grain_value"`
+}
+
+// BreadScaleAll returns all denominations (§4)
+func BreadScaleAll() []BreadScale {
+	return []BreadScale{
+		{"Grain", 1},
+		{"Crumb", 100},
+		{"Bread", 10000},
+		{"Loaf", 100000},
+		{"Batch", 1000000},
+		{"Cake", 10000000},
+		{"Bakery", 100000000},
+		{"Granary", 1000000000},
+		{"Mill", 10000000000},
+		{"Harvest", 100000000000},
+		{"Earth", 1000000000000},
+	}
+}
+
+// Params for the bread module
+type Params struct {
+	DenomGrain string `json:"denom_grain" yaml:"denom_grain"`
+	DenomBread string `json:"denom_bread" yaml:"denom_bread"`
+}
+
+func DefaultParams() Params {
+	return Params{
+		DenomGrain: "ugrain",
+		DenomBread: "ubread",
+	}
+}
+
+// GenesisState defines the bread module genesis state
+type GenesisState struct {
+	Params Params `json:"params" yaml:"params"`
+}
+
+func DefaultGenesisState() *GenesisState {
+	return &GenesisState{
+		Params: DefaultParams(),
+	}
+}
+
+func ValidateGenesis(bz json.RawMessage) error { return nil }

x/bread/types/types_test.go

@@ -0,0 +1,45 @@
+package types_test
+
+import (
+	"testing"
+
+	"github.com/oy/openyield/x/bread/types"
+)
+
+func TestGrainsPerBread(t *testing.T) {
+	if types.GrainsPerBread != 10000 {
+		t.Errorf("GrainsPerBread = %d, expected 10000 (§4: 1 Bread = 10,000 Grain)", types.GrainsPerBread)
+	}
+}
+
+func TestBreadScaleCount(t *testing.T) {
+	scale := types.BreadScaleAll()
+	if len(scale) != 11 {
+		t.Errorf("BreadScale length = %d, expected 11 denominations (§4)", len(scale))
+	}
+}
+
+func TestBreadScaleValues(t *testing.T) {
+	scale := types.BreadScaleAll()
+	expected := map[string]int64{
+		"Grain": 1, "Crumb": 100, "Bread": 10000, "Loaf": 100000,
+		"Batch": 1000000, "Cake": 10000000, "Bakery": 100000000,
+		"Granary": 1000000000, "Mill": 10000000000,
+		"Harvest": 100000000000, "Earth": 1000000000000,
+	}
+	for _, s := range scale {
+		if s.GrainValue != expected[s.Name] {
+			t.Errorf("%s = %d, expected %d", s.Name, s.GrainValue, expected[s.Name])
+		}
+	}
+}
+
+func TestDefaultDenoms(t *testing.T) {
+	params := types.DefaultParams()
+	if params.DenomGrain != "ugrain" {
+		t.Errorf("DenomGrain = %s, expected 'ugrain'", params.DenomGrain)
+	}
+	if params.DenomBread != "ubread" {
+		t.Errorf("DenomBread = %s, expected 'ubread'", params.DenomBread)
+	}
+}

x/forge/types/types.go

@@ -0,0 +1,107 @@
+package types
+
+import "encoding/json"
+
+const (
+	ModuleName   = "forge"
+	StoreKey     = ModuleName
+	RouterKey    = ModuleName
+	QuerierRoute = ModuleName
+)
+
+// RootBasketAssetType defines the asset types in the Root Basket (§6)
+type RootBasketAssetType string
+
+const (
+	TreasuryShort RootBasketAssetType = "TreasuryShort" // §6 ~35%
+	CorporateIG   RootBasketAssetType = "CorporateIG"   // §6 ~25%
+	TokenizedGold RootBasketAssetType = "TokenizedGold" // §6 ~20%
+	Bitcoin       RootBasketAssetType = "Bitcoin"       // §6 ~10%
+	OtherRwa      RootBasketAssetType = "OtherRwa"      // §6 ~10%
+)
+
+// BasketComposition defines the working Root Basket (§6)
+// Mission-lock: governance-adjustable within bounds — not into leverage,
+// not into futures, not into money creation.
+type BasketComposition struct {
+	TreasuryShortPct uint32 `json:"treasury_short_pct" yaml:"treasury_short_pct"` // ~35
+	CorporateIGPct   uint32 `json:"corporate_ig_pct" yaml:"corporate_ig_pct"`     // ~25
+	TokenizedGoldPct uint32 `json:"tokenized_gold_pct" yaml:"tokenized_gold_pct"` // ~20
+	BitcoinPct       uint32 `json:"bitcoin_pct" yaml:"bitcoin_pct"`               // ~10
+	OtherRwaPct      uint32 `json:"other_rwa_pct" yaml:"other_rwa_pct"`           // ~10
+}
+
+// DefaultBasketComposition returns the working Root Basket (§6)
+func DefaultBasketComposition() BasketComposition {
+	return BasketComposition{
+		TreasuryShortPct: 35,
+		CorporateIGPct:   25,
+		TokenizedGoldPct: 20,
+		BitcoinPct:       10,
+		OtherRwaPct:      10,
+	}
+}
+
+// Validate checks that the basket composition sums to 100 and stays within bounds
+func (b BasketComposition) Validate() bool {
+	total := b.TreasuryShortPct + b.CorporateIGPct + b.TokenizedGoldPct + b.BitcoinPct + b.OtherRwaPct
+	if total != 100 {
+		return false
+	}
+	// Bounds: no single asset > 50%, no leverage/futures/money-creation
+	if b.TreasuryShortPct > 50 || b.CorporateIGPct > 50 ||
+		b.TokenizedGoldPct > 50 || b.BitcoinPct > 50 || b.OtherRwaPct > 50 {
+		return false
+	}
+	return true
+}
+
+// ForgeInput represents a Forge operation: mint Bread against provided RWA (§6)
+type ForgeInput struct {
+	AssetType   RootBasketAssetType `json:"asset_type" yaml:"asset_type"`
+	Amount      int64               `json:"amount" yaml:"amount"`
+	TargetStash string              `json:"target_stash" yaml:"target_stash"`
+}
+
+// FoldInput represents a Fold operation: burn Bread, return RWA (§6)
+type FoldInput struct {
+	BreadAmount int64               `json:"bread_amount" yaml:"bread_amount"`
+	TargetAsset RootBasketAssetType `json:"target_asset" yaml:"target_asset"`
+	TargetStash string              `json:"target_stash" yaml:"target_stash"`
+}
+
+// ForgeError defines error states (§4.2)
+type ForgeError string
+
+const (
+	ErrAssetNotSupported  ForgeError = "AssetNotSupported"
+	ErrStillActive        ForgeError = "StillActive"
+	ErrBelowMinimum       ForgeError = "BelowMinimum"
+	ErrMirrorQuorumFailed ForgeError = "MirrorQuorumFailed"
+)
+
+// Params for the forge module
+type Params struct {
+	Basket         BasketComposition `json:"basket" yaml:"basket"`
+	MinForgeGrains int64             `json:"min_forge_grains" yaml:"min_forge_grains"` // min 1 Crumb
+}
+
+func DefaultParams() Params {
+	return Params{
+		Basket:         DefaultBasketComposition(),
+		MinForgeGrains: 100, // 1 Crumb
+	}
+}
+
+// GenesisState defines the forge module genesis state
+type GenesisState struct {
+	Params Params `json:"params" yaml:"params"`
+}
+
+func DefaultGenesisState() *GenesisState {
+	return &GenesisState{
+		Params: DefaultParams(),
+	}
+}
+
+func ValidateGenesis(bz json.RawMessage) error { return nil }

x/forge/types/types_test.go

@@ -0,0 +1,81 @@
+package types_test
+
+import (
+	"testing"
+
+	"github.com/oy/openyield/x/forge/types"
+)
+
+func TestDefaultBasketComposition(t *testing.T) {
+	basket := types.DefaultBasketComposition()
+	if basket.TreasuryShortPct != 35 {
+		t.Errorf("TreasuryShortPct = %d, expected 35 (§6)", basket.TreasuryShortPct)
+	}
+	if basket.CorporateIGPct != 25 {
+		t.Errorf("CorporateIGPct = %d, expected 25 (§6)", basket.CorporateIGPct)
+	}
+	if basket.TokenizedGoldPct != 20 {
+		t.Errorf("TokenizedGoldPct = %d, expected 20 (§6)", basket.TokenizedGoldPct)
+	}
+	if basket.BitcoinPct != 10 {
+		t.Errorf("BitcoinPct = %d, expected 10 (§6)", basket.BitcoinPct)
+	}
+	if basket.OtherRwaPct != 10 {
+		t.Errorf("OtherRwaPct = %d, expected 10 (§6)", basket.OtherRwaPct)
+	}
+}
+
+func TestBasketValidation(t *testing.T) {
+	basket := types.DefaultBasketComposition()
+	if !basket.Validate() {
+		t.Error("Default basket should validate (sums to 100, within bounds)")
+	}
+
+	badBasket := types.BasketComposition{
+		TreasuryShortPct: 60, // exceeds 50% bound
+		CorporateIGPct:   20,
+		TokenizedGoldPct: 10,
+		BitcoinPct:       5,
+		OtherRwaPct:      5,
+	}
+	if badBasket.Validate() {
+		t.Error("Basket with >50% single asset should fail validation")
+	}
+
+	sumBasket := types.BasketComposition{
+		TreasuryShortPct: 30,
+		CorporateIGPct:   20,
+		TokenizedGoldPct: 20,
+		BitcoinPct:       10,
+		OtherRwaPct:      10, // sums to 90, not 100
+	}
+	if sumBasket.Validate() {
+		t.Error("Basket not summing to 100 should fail validation")
+	}
+}
+
+func TestRootBasketAssetTypes(t *testing.T) {
+	assets := []types.RootBasketAssetType{
+		types.TreasuryShort, types.CorporateIG, types.TokenizedGold,
+		types.Bitcoin, types.OtherRwa,
+	}
+	if len(assets) != 5 {
+		t.Errorf("Expected 5 Root Basket asset types, got %d", len(assets))
+	}
+}
+
+func TestForgeErrorTypes(t *testing.T) {
+	if types.ErrAssetNotSupported != "AssetNotSupported" {
+		t.Error("ErrAssetNotSupported mismatch")
+	}
+	if types.ErrMirrorQuorumFailed != "MirrorQuorumFailed" {
+		t.Error("ErrMirrorQuorumFailed mismatch (§4.2: Forge/Fold blocked until restored)")
+	}
+}
+
+func TestMinForgeGrains(t *testing.T) {
+	params := types.DefaultParams()
+	if params.MinForgeGrains != 100 {
+		t.Errorf("MinForgeGrains = %d, expected 100 (1 Crumb)", params.MinForgeGrains)
+	}
+}