ship(P04): merge Bloom Engine into milestone v0.1

---ci---
project: oy
phase: 4
milestone: v0.1
status: complete
ship: v0.0.4
---/ci---

x/bloom/types/types.go

@@ -0,0 +1,74 @@
+package types
+
+import "encoding/json"
+
+const (
+	ModuleName   = "bloom"
+	StoreKey     = ModuleName
+	RouterKey    = ModuleName
+	QuerierRoute = ModuleName
+
+	// Target Bloom rate: ~4-5% per year (§6)
+	// Honest expectation, not a promise
+	TargetBloomRateBasisPoints = 450 // 4.5%
+	MinBloomRateBasisPoints    = 400 // 4.0%
+	MaxBloomRateBasisPoints    = 500 // 5.0%
+
+	// Bloom accrues automatically to every Grain in every Stash (§6)
+	// Accrual period: daily (in blocks, assuming ~10min blocks)
+	AccrualPeriodBlocks = 144
+)
+
+// BloomRecord tracks Bloom accrued to a Stash
+type BloomRecord struct {
+	StashID          string `json:"stash_id" yaml:"stash_id"`
+	AccruedGrain     int64  `json:"accrued_grain" yaml:"accrued_grain"`
+	LastAccrualBlock int64  `json:"last_accrual_block" yaml:"last_accrual_block"`
+	RateBasisPoints  uint32 `json:"rate_basis_points" yaml:"rate_basis_points"`
+}
+
+// BloomBoosterBucket represents a higher-strategy bucket (§3 lexicon)
+type BloomBoosterBucket struct {
+	BucketID     string `json:"bucket_id" yaml:"bucket_id"`
+	StashID      string `json:"stash_id" yaml:"stash_id"`
+	PledgeAmount int64  `json:"pledge_amount" yaml:"pledge_amount"`
+	BoostRateBps uint32 `json:"boost_rate_bps" yaml:"boost_rate_bps"`
+	UnlockHeight int64  `json:"unlock_height" yaml:"unlock_height"`
+}
+
+// BloomSource defines where Bloom originates (§6: only from real yield)
+type BloomSource string
+
+const (
+	BloomFromTreasury    BloomSource = "TreasuryCoupons"
+	BloomFromCorporate   BloomSource = "CorporateCoupons"
+	BloomFromGoldCarry   BloomSource = "GoldCarry"
+	BloomFromRwaCashflow BloomSource = "RwaCashflow"
+)
+
+// MissionLockBloom: Bloom originates ONLY from real yield (§6)
+// No synthetic Bloom. No protocol-printed Bloom.
+// This is a Mission Lock — no Council vote can change it.
+const MissionLockBloom = "Bloom originates only from real yield. No synthetic Bloom. No protocol-printed Bloom."
+
+type Params struct {
+	TargetRateBps uint32 `json:"target_rate_bps" yaml:"target_rate_bps"`
+	AccrualBlocks uint32 `json:"accrual_blocks" yaml:"accrual_blocks"`
+}
+
+func DefaultParams() Params {
+	return Params{
+		TargetRateBps: TargetBloomRateBasisPoints,
+		AccrualBlocks: AccrualPeriodBlocks,
+	}
+}
+
+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/bloom/types/types_test.go

@@ -0,0 +1,41 @@
+package types_test
+
+import (
+	"testing"
+
+	"github.com/oy/openyield/x/bloom/types"
+)
+
+func TestTargetBloomRate(t *testing.T) {
+	if types.TargetBloomRateBasisPoints != 450 {
+		t.Errorf("TargetBloomRate = %d, expected 450 (§6: 4.5 pct)", types.TargetBloomRateBasisPoints)
+	}
+	if types.MinBloomRateBasisPoints != 400 {
+		t.Errorf("MinBloomRate = %d, expected 400 (§6: 4-5 pct)", types.MinBloomRateBasisPoints)
+	}
+	if types.MaxBloomRateBasisPoints != 500 {
+		t.Errorf("MaxBloomRate = %d, expected 500 (§6: 4-5 pct)", types.MaxBloomRateBasisPoints)
+	}
+}
+
+func TestBloomSources(t *testing.T) {
+	sources := []types.BloomSource{
+		types.BloomFromTreasury, types.BloomFromCorporate,
+		types.BloomFromGoldCarry, types.BloomFromRwaCashflow,
+	}
+	if len(sources) != 4 {
+		t.Errorf("Expected 4 Bloom sources, got %d", len(sources))
+	}
+}
+
+func TestMissionLockBloom(t *testing.T) {
+	if types.MissionLockBloom == "" {
+		t.Error("MissionLockBloom should not be empty (§6: mission-locked)")
+	}
+}
+
+func TestAccrualPeriod(t *testing.T) {
+	if types.AccrualPeriodBlocks != 144 {
+		t.Errorf("AccrualPeriodBlocks = %d, expected 144 (~daily)", types.AccrualPeriodBlocks)
+	}
+}