genesis: unify mnemonic env to LUX_MNEMONIC + kill vesting docstring rot

One env, one way. The genesis mnemonic is now read from exactly one
env var: LUX_MNEMONIC. The prior two-env fallback chain
(MNEMONIC > LIGHT_MNEMONIC) is gone. Per-env isolation is by a
DIFFERENT mnemonic per env (loaded from KMS), not by env-var name.

pkg/genesis/keys.go:
- New MnemonicEnvVar = "LUX_MNEMONIC" constant.
- getMnemonicEnv() reads only LUX_MNEMONIC; no fallback.
- LightMnemonic constant kept (it's the well-known dev seed VALUE;
  pass it as the value of LUX_MNEMONIC for local nets).
- IsProductionNetwork docstring updated to spell out the canonical 4:
  mainnet(1) / testnet(2) / devnet(3) refuse public mnemonics;
  local(1337)+ allows LightMnemonic.
- Docstring rot purged: the prior "50M free + 50M vesting at 1%/year
  over 100y" claim was a lie — buildConfigFromKeyInfos never wired the
  100-period schedule (the code admits the schedule "overflows zapdb
  batch limit"). Replaced with the truth: 1000 × 50M LUX on X-Chain
  AND P-Chain, immediate spend; C-Chain is treasury-only (2T LUX).
- Dead code deleted: StakingStartTime, UnlockInterval consts,
  buildUnlockSchedule() function.

pkg/genesis/allocations.go:
- VestingConfig struct removed.
- DefaultVesting() removed.
- WithVesting() builder method removed.
- Vesting branches in PChain() / PChainMap() collapsed to immediate-only.
- MainnetAllocations no longer calls WithVesting(DefaultVesting()).

pkg/genesis/validator_keys.go:
- VestingPeriods const removed.
- GeneratePChainAllocationsWithVesting() removed.

pkg/genesis/networks.go (new):
- Canonical primary-network-id table: MainnetID / TestnetID / DevnetID
  / LocalID = 1 / 2 / 3 / 1337. Matching C-Chain (EVM) chain IDs:
  96369 / 96368 / 96370 / 31337.
- IsCanonicalPrimaryNetwork helper.

cmd/checkkeys/main.go:
- Reads LUX_MNEMONIC via genesis.MnemonicEnvVar (no fallback).

cmd/derive100/main.go:
- Usage hint updated: mnemonic-env: LUX_MNEMONIC.

cmd/genesis/main.go:
- Flag help, env-var docs, examples, and error messages all reference
  LUX_MNEMONIC.

pkg/genesis/light_mnemonic_guard_test.go:
- All t.Setenv calls use LUX_MNEMONIC.
- Test labels reference LightMnemonic (the constant) not the dead env name.

configs/getgenesis_test.go:
- Comment updated: LightMnemonic instead of LIGHT_MNEMONIC.

CHANGELOG.md + LLM.md:
- Documented the unification + the dead-code removal.

The validator stake-lock (3-entry 5y/10y/20y schedule attached to the
validator's UTXO inside buildConfigFromKeyInfos at keys.go:1077-1083)
is unchanged — that locked-stake bucket is the only UnlockSchedule in
the canonical genesis path and the ProtocolVM needs it.

External-caller sweep: grepped ~/work/lux, ~/work/hanzo, ~/work/zoo,
~/work/luxfi for genesis.VestingConfig / genesis.DefaultVesting /
genesis.GeneratePChainAllocationsWithVesting / genesis.StakingStartTime
/ genesis.UnlockInterval — zero hits. Safe to delete. (luxfi/keys at
~/work/lux/keys has its own MainnetAllocations copy — separate repo,
not affected.)

Verification:
- go build ./... → clean
- go vet ./... → clean
- go test ./... -count=1 → ok configs, ok pkg/genesis
- grep '[^_X]MNEMONIC\|LIGHT_MNEMONIC' under pkg/genesis cmd configs →
  zero matches (only CHANGELOG history + Python script local vars).
- grep VestingConfig|buildUnlockSchedule|GeneratePChainAllocationsWithVesting
  under source → zero matches.

CHANGELOG.md

@@ -2,6 +2,44 @@
 
 ## Unreleased
 
+### Mnemonic env unification — one var, one way
+
+The genesis mnemonic is now read from exactly one env var: `LUX_MNEMONIC`.
+The previous two-env fallback chain (`MNEMONIC` then `LIGHT_MNEMONIC`)
+is gone — there is one and only one canonical name.
+
+- `pkg/genesis.MnemonicEnvVar` constant exposes the name (`"LUX_MNEMONIC"`).
+- `getMnemonicEnv()` reads only `LUX_MNEMONIC`. No fallback.
+- All CLI help, error messages and tests now reference `LUX_MNEMONIC`.
+- `LightMnemonic` constant still holds the well-known dev seed value:
+  pass it as the value of `LUX_MNEMONIC` to bootstrap a local network.
+
+Per-env isolation comes from a DIFFERENT mnemonic per env (loaded from
+KMS for production), not from the env-var name.
+
+### Dead-code removal — vesting rot
+
+The "50M free + 50M vesting at 1%/year over 100y from Jan 1 2020"
+docstring was a lie: the canonical builder `buildConfigFromKeyInfos`
+never wired the 100-period schedule (the prior code admits the schedule
+"overflows zapdb batch limit"). Drop the unreachable plumbing:
+
+- `StakingStartTime`, `UnlockInterval`, `VestingPeriods` constants
+- `buildUnlockSchedule()` function (pkg/genesis/keys.go)
+- `VestingConfig` struct + `DefaultVesting()` + `WithVesting()`
+- vesting branches in `ChainAllocations.PChain()` / `PChainMap()`
+- `GeneratePChainAllocationsWithVesting()` function
+- `MainnetAllocations` no longer calls `WithVesting(DefaultVesting())`
+
+The validator stake-lock (3-entry 5y/10y/20y schedule attached to the
+validator's UTXO inside `buildConfigFromKeyInfos`) is unchanged — that
+locked-stake bucket is the only `UnlockSchedule` in the canonical
+genesis path and the ProtocolVM needs it.
+
+`pkg/genesis/networks.go` adds the canonical primary-network-id table
+(`MainnetID` 1, `TestnetID` 2, `DevnetID` 3, `LocalID` 1337) as the
+single source of truth for "what envs exist".
+
 ### Breaking — HIP-0077 §"Identity" HD path alignment
 
 `pkg/genesis/keys.go` now derives keys on the per-network hardened
@@ -57,7 +95,7 @@ reproduce under the new layout. Specifically:
   re-derived after upgrading.
 - If you need to keep the old addresses spendable, export their private
   keys (`BuildWalletKeyHex` on the old code) and load them via
-  `KEYS_DIR` instead of `MNEMONIC` — `LoadKeysFromDir` is unchanged.
+  `KEYS_DIR` instead of `LUX_MNEMONIC` — `LoadKeysFromDir` is unchanged.
 
 Per CLAUDE.md `no backwards compatibility, only forwards perfection`:
 this is the correct break; clients deriving from the HIP-0077 spec

LLM.md

@@ -17,7 +17,7 @@ silent classification change.
 |-----|-----|--------|
 | `85a8fc8` | v1.9.6 | Pin ChainSecurityProfile into Config + Resolve at load (closes F102 genesis layer) |
 | `1d73c8d` | v1.9.6 | Swap mldsa65 keygen from cloudflare/circl to luxfi/crypto/pq/mldsa |
-| `e698307` | v1.9.5 | HD branch hardening + LIGHT_MNEMONIC production refusal (F12/F30/F31/F35) |
+| `e698307` | v1.9.5 | HD branch hardening + LightMnemonic production refusal (F12/F30/F31/F35) |
 | `fe4781c` | v1.9.5 | `LUX_DISABLE_CCHAIN=1` omits C-Chain from primary genesis |
 | `2b16f45` | v1.9.5 | Operator-overridable C-Chain genesis via `LUX_CCHAIN_GENESIS_FILE` |
 
@@ -350,7 +350,7 @@ Generate genesis configurations:
 
 ```bash
 # Generate from mnemonic
-MNEMONIC="test test..." ./genesis -network-id 96369 -validators 5 -output genesis.json
+LUX_MNEMONIC="test test..." ./genesis -network-id 96369 -validators 5 -output genesis.json
 
 # From existing keys
 ./genesis -network mainnet -keys-dir ~/.lux/keys -output genesis.json

cmd/checkkeys/main.go

@@ -8,15 +8,9 @@ import (
 )
 
 func main() {
-	mnemonic := ""
-	for _, env := range []string{"MNEMONIC", "LIGHT_MNEMONIC"} {
-		if v := os.Getenv(env); v != "" {
-			mnemonic = v
-			break
-		}
-	}
+	mnemonic := os.Getenv(genesis.MnemonicEnvVar)
 	if mnemonic == "" {
-		fmt.Println("mnemonic not set (set MNEMONIC or LIGHT_MNEMONIC)")
+		fmt.Printf("mnemonic not set (set %s)\n", genesis.MnemonicEnvVar)
 		os.Exit(1)
 	}
 

cmd/derive100/main.go

@@ -129,7 +129,7 @@ func main() {
 		fmt.Fprintln(os.Stderr, "usage: derive100 <hrp> <rpc> <mnemonic-env>")
 		fmt.Fprintln(os.Stderr, "  hrp: test|lux|dev|local")
 		fmt.Fprintln(os.Stderr, "  rpc: http://24.199.71.151:9650")
-		fmt.Fprintln(os.Stderr, "  mnemonic-env: MNEMONIC|LIGHT_MNEMONIC")
+		fmt.Fprintln(os.Stderr, "  mnemonic-env: LUX_MNEMONIC")
 		os.Exit(1)
 	}
 	hrp := os.Args[1]

cmd/genesis/main.go

@@ -42,7 +42,7 @@ func main() {
 		output          = flag.String("output", "", "Output file path (default: stdout)")
 		allocation      = flag.Uint64("allocation", genesis.DefaultAllocationPerValidator, "Allocation per validator in nLUX")
 		validators      = flag.Int("validators", 3, "Number of validators for mnemonic-based genesis")
-		walletKeys      = flag.Int("wallet-keys", 0, "Number of mnemonic-derived wallet keys to fund (Lux-internal hardened path m/44'/9000'/nid'/1'/i'; requires MNEMONIC env)")
+		walletKeys      = flag.Int("wallet-keys", 0, "Number of mnemonic-derived wallet keys to fund (Lux-internal hardened path m/44'/9000'/nid'/1'/i'; requires LUX_MNEMONIC env)")
 		walletAmount    = flag.Uint64("wallet-amount", 10000, "Allocation per wallet key in LUX (default: 10000)")
 		bip44WalletKeys = flag.Int("bip44-wallet-keys", 0, "Number of canonical BIP44 wallet keys to fund (m/44'/9000'/0'/0/i — SLIP-0044 coin type 9000)")
 		cchainPath      = flag.String("cchain", "", "Path to existing C-Chain genesis (preserves original)")
@@ -115,7 +115,7 @@ Flags:
 
 Environment Variables:
   KEYS_DIR       Directory containing node keys
-  MNEMONIC       BIP39 mnemonic for key derivation
+  LUX_MNEMONIC   BIP39 mnemonic for key derivation
   PRIVATE_KEY    Single private key (hex)
   GENESIS_DIR    Directory containing genesis component files
   NETWORK_ID     Network ID
@@ -128,7 +128,7 @@ Examples:
   genesis -network mainnet -cchain mainnet/cchain.json -output primary.json
 
   # Generate from mnemonic with 3 validators
-  MNEMONIC="your mnemonic here" genesis -validators 3 -output primary.json
+  LUX_MNEMONIC="your mnemonic here" genesis -validators 3 -output primary.json
 
   # Load from existing genesis directory
   genesis -genesis-dir ./mainnet -output primary.json`)
@@ -189,7 +189,7 @@ func buildConfig(networkID uint32, keysDir, genesisDir string, allocation uint64
 
 	config, err = genesis.BuildConfigFromKeys(networkID, keysDir, allocation)
 	if err != nil {
-		return nil, fmt.Errorf("failed to build config: %w (try setting KEYS_DIR, MNEMONIC, or PRIVATE_KEY)", err)
+		return nil, fmt.Errorf("failed to build config: %w (try setting KEYS_DIR, LUX_MNEMONIC, or PRIVATE_KEY)", err)
 	}
 
 	config = maybeAddWalletAllocations(config, walletKeys, walletAmount)

configs/getgenesis_test.go

@@ -111,7 +111,7 @@ func TestGetGenesisLocalnet(t *testing.T) {
 	}
 
 	// Verify first allocation is canonical BIP44 m/44'/9000'/0'/0/0
-	// for LIGHT_MNEMONIC. ETH addr is the keccak256(pubkey) projection
+	// for LightMnemonic. ETH addr is the keccak256(pubkey) projection
 	// of the same secp256k1 spending key, computed from the BIP44 child
 	// at index 0 (not the Lux-internal hardened path).
 	first := allocs[0].(map[string]interface{})

pkg/genesis/allocations.go

@@ -9,36 +9,19 @@ import (
 )
 
 // ChainAllocations holds genesis allocations for all chains.
-// Use NewAllocations() or AllocationBuilder to create.
+// Use NewAllocations() to create.
+//
+// All allocations are immediate (no vesting). The long-locked validator
+// stake bucket is attached separately by buildConfigFromKeyInfos and is
+// the only place an UnlockSchedule appears in the canonical genesis path.
 type ChainAllocations struct {
 	keys   []ValidatorKeyInfo
 	hrp    string
 	amount uint64
-
-	// Vesting configuration (optional)
-	vesting *VestingConfig
-}
-
-// VestingConfig defines the vesting schedule parameters.
-type VestingConfig struct {
-	StartTime uint64 // Unix timestamp when vesting starts
-	Interval  uint64 // Seconds between each unlock
-	Periods   int    // Number of unlock periods
-}
-
-// DefaultVesting returns the standard vesting config:
-// - Start: Jan 1, 2020
-// - 1% unlocks per year for 100 years
-func DefaultVesting() *VestingConfig {
-	return &VestingConfig{
-		StartTime: StakingStartTime, // Jan 1, 2020
-		Interval:  UnlockInterval,   // 1 year
-		Periods:   100,              // 100 periods = 1% per year
-	}
 }
 
 // NewAllocations creates a ChainAllocations for the given validator keys.
-// Default amount is 100M LUX per key, no vesting.
+// Default amount is DefaultValidatorAllocation per key, immediate spend.
 func NewAllocations(keys []ValidatorKeyInfo, hrp string) *ChainAllocations {
 	return &ChainAllocations{
 		keys:   keys,
@@ -53,14 +36,8 @@ func (a *ChainAllocations) WithAmount(amount uint64) *ChainAllocations {
 	return a
 }
 
-// WithVesting enables vesting with the specified config.
-// Use DefaultVesting() for standard 100-year vesting from Jan 1 2020.
-func (a *ChainAllocations) WithVesting(config *VestingConfig) *ChainAllocations {
-	a.vesting = config
-	return a
-}
-
 // PChain returns P-chain allocations in the standard AllocationJSON format.
+// All entries are immediately spendable (locktime=0).
 func (a *ChainAllocations) PChain() ([]AllocationJSON, error) {
 	allocations := make([]AllocationJSON, len(a.keys))
 
@@ -70,25 +47,11 @@ func (a *ChainAllocations) PChain() ([]AllocationJSON, error) {
 			return nil, fmt.Errorf("failed to format P-chain address for key %d: %w", i, err)
 		}
 
-		var unlockSchedule []LockedAmount
-		var initialAmount uint64
-
-		if a.vesting != nil {
-			// Vested allocation
-			unlockSchedule = buildUnlockSchedule(a.amount, a.vesting.StartTime, a.vesting.Interval, a.vesting.Periods)
-			initialAmount = a.amount // X-chain gets initial amount with vesting
-		} else {
-			// Immediate allocation (no vesting)
-			// X-chain gets full initial amount for chain creation operations
-			unlockSchedule = []LockedAmount{{Amount: a.amount, Locktime: 0}}
-			initialAmount = a.amount
-		}
-
 		allocations[i] = AllocationJSON{
 			EVMAddr:        key.EVMAddr,
 			UTXOAddr:       utxoAddr,
-			InitialAmount:  initialAmount,
-			UnlockSchedule: unlockSchedule,
+			InitialAmount:  a.amount,
+			UnlockSchedule: []LockedAmount{{Amount: a.amount, Locktime: 0}},
 		}
 	}
 	return allocations, nil
@@ -130,6 +93,7 @@ func (a *ChainAllocations) CChainMap() map[string]map[string]string {
 }
 
 // PChainMap returns P-chain allocations as interface maps (for netrunner compatibility).
+// All entries are immediately spendable (locktime=0).
 func (a *ChainAllocations) PChainMap() ([]map[string]interface{}, error) {
 	allocations := make([]map[string]interface{}, len(a.keys))
 
@@ -139,34 +103,13 @@ func (a *ChainAllocations) PChainMap() ([]map[string]interface{}, error) {
 			return nil, fmt.Errorf("failed to format P-chain address for key %d: %w", i, err)
 		}
 
-		var unlockSchedule []map[string]interface{}
-		var initialAmount uint64
-
-		if a.vesting != nil {
-			// Build vesting schedule as maps
-			locked := buildUnlockSchedule(a.amount, a.vesting.StartTime, a.vesting.Interval, a.vesting.Periods)
-			unlockSchedule = make([]map[string]interface{}, len(locked))
-			for j, l := range locked {
-				unlockSchedule[j] = map[string]interface{}{
-					"amount":   l.Amount,
-					"locktime": l.Locktime,
-				}
-			}
-			initialAmount = a.amount
-		} else {
-			// Immediate allocation (no vesting)
-			// X-chain gets full initial amount for chain creation operations
-			unlockSchedule = []map[string]interface{}{
-				{"amount": a.amount, "locktime": uint64(0)},
-			}
-			initialAmount = a.amount
-		}
-
 		allocations[i] = map[string]interface{}{
 			"evmAddr":       key.EVMAddr,
 			"utxoAddr":      utxoAddr,
-			"initialAmount":  initialAmount,
-			"unlockSchedule": unlockSchedule,
+			"initialAmount": a.amount,
+			"unlockSchedule": []map[string]interface{}{
+				{"amount": a.amount, "locktime": uint64(0)},
+			},
 		}
 	}
 	return allocations, nil
@@ -206,15 +149,14 @@ func QuickAllocations(keys []ValidatorKeyInfo, hrp string, amount uint64) (*AllC
 	return NewAllocations(keys, hrp).WithAmount(amount).All()
 }
 
-// MainnetAllocations creates allocations with standard mainnet vesting (1B LUX, 100 years).
+// MainnetAllocations creates immediate-spend mainnet allocations (1B LUX per key).
 func MainnetAllocations(keys []ValidatorKeyInfo, hrp string) (*AllChainAllocations, error) {
 	return NewAllocations(keys, hrp).
 		WithAmount(OneBillionLUX).
-		WithVesting(DefaultVesting()).
 		All()
 }
 
-// TestnetAllocations creates allocations suitable for testnet (100M LUX, no vesting).
+// TestnetAllocations creates immediate-spend testnet allocations (100M LUX per key).
 func TestnetAllocations(keys []ValidatorKeyInfo, hrp string) (*AllChainAllocations, error) {
 	return NewAllocations(keys, hrp).
 		WithAmount(OneHundredMillionLUX).

pkg/genesis/keys.go

@@ -34,53 +34,46 @@ import (
 )
 
 const (
-	// DefaultAllocationPerAccount is 50M LUX per account per chain (P and X).
-	// 1000 accounts × 50M × 2 chains = 100B LUX of UTXOs in genesis (well
-	// under the 2T LUX SupplyCap on every network).
-	// X-Chain: 50M free (immediately spendable from genesis).
-	// P-Chain: 50M free at genesis (no vesting); the long-tail unlock
-	// schedule below adds a separate 50M per account that vests 1%/year
-	// over 100 years from Jan 1 2020 — i.e. each address sees 50M
-	// spendable on X, 50M spendable on P + 50M vesting on P.
+	// DefaultAllocationPerAccount is the canonical fresh-genesis amount:
+	// 50M LUX per derived account, spendable immediately on both X-Chain
+	// and P-Chain (same address — bech32(ripemd160(sha256(secp256k1_pubkey)))).
+	//
+	// 1000 accounts × 50M × 2 chains = 100B LUX of UTXOs in genesis.
+	// Per-chain SupplyCap is 2T LUX, so each chain individually clears.
 	//
 	// Address scheme — Bitcoin-UTXO-style (more quantum-resistant):
 	//   P-Chain / X-Chain addresses are bech32(ripemd160(sha256(pubkey))).
-	//   The public key is *hidden behind two hash layers* until the
-	//   address is first spent. Until first spend, even a future
-	//   quantum adversary cannot recover the private key — Shor's
-	//   algorithm works against the secp256k1 pubkey, but not against
-	//   sha256+ripemd160. Contrast with C-Chain (Ethereum) addresses,
-	//   which are keccakBytes(pubkey)[12:] and effectively expose the
-	//   pubkey on every signature (recovery in ECDSA). Long-term holds
-	//   should sit on P/X, not C, for this reason.
+	//   The public key is hidden behind two hash layers until first spend.
+	//   A future quantum adversary cannot recover the private key from the
+	//   address alone — Shor's works on the pubkey, not on sha256+ripemd160.
+	//   C-Chain (Ethereum) addresses expose the pubkey via ECDSA recovery
+	//   on every signed tx; long-term holds belong on P/X, not C.
 	DefaultAllocationPerAccount = 50_000_000 * Lux
 
 	// DefaultAllocationPerValidator is kept for backward compatibility
 	DefaultAllocationPerValidator = DefaultAllocationPerAccount
 
-	// DefaultNumAccounts is the default number of mnemonic-derived accounts
-	// Funds 1000 wallet keys at canonical BIP44 m/44'/9000'/0'/0/i so that
-	// any wallet that derives at this path against the SAME mnemonic sees
-	// a fundable address on both P and X.
+	// DefaultNumAccounts is the default number of mnemonic-derived accounts.
+	// Funds 1000 BIP44 wallet keys at m/44'/9000'/0'/0/i so that any
+	// canonical-BIP44 wallet (Core, MetaMask, AvalancheJS, `lux key derive`)
+	// sees a fundable address on both P and X under the same mnemonic.
+	// Per-network isolation comes from a DIFFERENT mnemonic per env
+	// (loaded from KMS), not from path divergence.
 	DefaultNumAccounts = 1000
 
-	// StakingStartTime is Jan 1, 2020 00:00:00 UTC
-	StakingStartTime = 1577836800
-
-	// UnlockInterval is 1 year in seconds
-	UnlockInterval = 365 * 24 * 60 * 60
-
-	// TreasuryAddress is the C-Chain treasury with 2T LUX
+	// TreasuryAddress is the C-Chain treasury (no per-account C-Chain alloc).
 	TreasuryAddress = "0x9011E888251AB053B7bD1cdB598Db4f9DEd94714"
 
-	// TreasuryAmount is 2 trillion LUX in microLUX (2T * 10^6)
+	// TreasuryAmount is 2 trillion LUX in microLUX (2T * 10^6).
 	TreasuryAmount = 2_000_000_000_000 * Lux
 
-	// PChainFeeReserve is 10,000 LUX per validator for P-Chain fees
+	// PChainFeeReserve is 10,000 LUX per validator earmarked for P-Chain fees.
 	PChainFeeReserve = 10_000 * Lux
 
-	// LightMnemonic is the well-known dev mnemonic for local networks (network-id >= 1337).
-	// NEVER use on public networks (mainnet, testnet, devnet).
+	// LightMnemonic is the well-known public dev seed. Pass this as the
+	// value of LUX_MNEMONIC to bootstrap a local network (network ID >=
+	// 1337). RefuseLightMnemonicOnProduction enforces it cannot be used
+	// on mainnet/testnet/devnet (network IDs 1/2/3).
 	LightMnemonic = "light light light light light light light light light light light energy"
 )
 
@@ -312,21 +305,6 @@ func deriveFeeKey(keysDir string, validatorKey KeyInfo, index int) (*KeyInfo, er
 	}, nil
 }
 
-// buildUnlockSchedule creates a vesting schedule
-func buildUnlockSchedule(totalAmount uint64, startTime uint64, interval uint64, periods int) []LockedAmount {
-	amountPerPeriod := totalAmount / uint64(periods)
-	schedule := make([]LockedAmount, 0, periods)
-
-	for i := 0; i < periods; i++ {
-		schedule = append(schedule, LockedAmount{
-			Amount:   amountPerPeriod,
-			Locktime: startTime + uint64(i)*interval,
-		})
-	}
-
-	return schedule
-}
-
 // buildCChainGenesisTreasury creates C-chain genesis JSON with only the treasury allocation.
 // Treasury: 0x9011E888251AB053B7bD1cdB598Db4f9DEd94714 gets 2T LUX.
 // No mnemonic-derived account allocations on C-Chain.
@@ -539,14 +517,14 @@ func mldsaKeygenFromChildSeed(childSeed []byte) ([]byte, error) {
 	return pk.Bytes(), nil
 }
 
-// LoadKeysFromMnemonicEnv loads keys from mnemonic env vars (MNEMONIC > LIGHT_MNEMONIC).
+// LoadKeysFromMnemonicEnv loads keys from the LUX_MNEMONIC env var.
 // Callers that already know the network id MUST use
 // LoadKeysFromMnemonicEnvForNetwork instead — it adds the production-safe
 // public-mnemonic guard around this entry point.
 func LoadKeysFromMnemonicEnv(numAccounts int) ([]KeyInfo, error) {
 	mnemonic := getMnemonicEnv()
 	if mnemonic == "" {
-		return nil, fmt.Errorf("mnemonic not set (set MNEMONIC or LIGHT_MNEMONIC)")
+		return nil, fmt.Errorf("mnemonic not set (set %s)", MnemonicEnvVar)
 	}
 	return LoadKeysFromMnemonic(mnemonic, numAccounts)
 }
@@ -630,28 +608,24 @@ func genesisMessage(networkID uint32) string {
 	}
 }
 
-// getMnemonicEnv returns the mnemonic from environment variables.
-// Priority: MNEMONIC > LIGHT_MNEMONIC
-//
-// LIGHT_MNEMONIC is the publicly-known dev seed. Anyone in the world can
-// derive its first 200 child keys; the auto-fund pre-allocation in
-// HIP-0077 §"Auto-funding the first 200 devices" is *only* meant for
-// network IDs >= 1337 (dev / primary local mesh). Production networks
-// MUST set MNEMONIC.
-//
-// Use IsLightMnemonic and RefuseLightMnemonicOnProduction to enforce that
-// rule wherever a key is loaded for a known network ID.
+// MnemonicEnvVar is the single canonical env var name for the genesis
+// mnemonic. One env, one way:
+//   - mainnet/testnet/devnet (IDs 1/2/3): a private hardware-RNG mnemonic
+//     loaded from KMS; RefuseLightMnemonicOnProduction rejects all known
+//     public mnemonics so the production guard is enforced at derivation.
+//   - local (ID 1337): typically set to LightMnemonic for fast dev boot;
+//     the same public-mnemonic blacklist still applies, but local IDs
+//     are exempt by IsProductionNetwork.
+const MnemonicEnvVar = "LUX_MNEMONIC"
+
+// getMnemonicEnv returns the mnemonic from the canonical LUX_MNEMONIC env
+// var. No fallback chain — one and only one env name.
 func getMnemonicEnv() string {
-	for _, env := range []string{"MNEMONIC", "LIGHT_MNEMONIC"} {
-		if v := os.Getenv(env); v != "" {
-			return v
-		}
-	}
-	return ""
+	return os.Getenv(MnemonicEnvVar)
 }
 
 // IsLightMnemonic reports whether the given mnemonic is exactly the
-// well-known LIGHT_MNEMONIC dev seed. Compared in constant time so a
+// well-known LightMnemonic dev seed value. Compared in constant time so a
 // timing attacker can't probe the running config from outside.
 func IsLightMnemonic(mnemonic string) bool {
 	return subtleConstantTimeEqual([]byte(mnemonic), []byte(LightMnemonic))
@@ -660,7 +634,7 @@ func IsLightMnemonic(mnemonic string) bool {
 // knownPublicMnemonics is the curated set of seeds that anyone in the
 // world can derive from. Production deployments MUST refuse all of them.
 //
-// LIGHT_MNEMONIC is one row; the rest are the most-frequently-cited public
+// LightMnemonic is one row; the rest are the most-frequently-cited public
 // mnemonics from BIP-39 test vectors, common dev tooling defaults, and
 // hardware-wallet demo seeds. Any of these on a production network →
 // every derived child key is publicly enumerable.
@@ -687,7 +661,7 @@ var knownPublicMnemonics = []string{
 }
 
 // IsKnownPublicMnemonic reports whether the given mnemonic appears in any
-// well-known public list (LIGHT_MNEMONIC, BIP-39 test vectors, Hardhat
+// well-known public list (LightMnemonic, BIP-39 test vectors, Hardhat
 // default, hardware-wallet demos, etc.). Compared in constant time per
 // entry so a timing attacker can't probe which entry matched.
 //
@@ -710,15 +684,16 @@ func IsKnownPublicMnemonic(mnemonic string) bool {
 // IsProductionNetwork reports whether the given numeric network ID is on
 // the list of *production* Lux networks. Local / primary-local meshes
 // (network IDs >= 1337, including constants.LocalID = 1337) deliberately
-// allow LIGHT_MNEMONIC; mainnet, testnet and any other reserved low-ID
-// network refuse it.
+// allow public mnemonics like LightMnemonic; mainnet, testnet and any
+// other reserved low-ID network refuse them.
 //
-// Network ID convention (mirrors lux/constants):
-//   - 1     mainnet (production)
-//   - 2     testnet (production-grade staging — refuses LIGHT_MNEMONIC)
-//   - 1337  LocalID (free-form local dev, allows LIGHT_MNEMONIC)
-//   - >= 1337 any tenant local / dev mesh (allows LIGHT_MNEMONIC)
-//   - 3..1336 reserved; treated as production by default
+// Canonical network ID map (mirrors lux/constants):
+//   - 1     mainnet (production — refuses public mnemonics)
+//   - 2     testnet (production-grade staging — refuses public mnemonics)
+//   - 3     devnet  (production-grade dev mesh — refuses public mnemonics)
+//   - 1337  LocalID (free-form local dev — allows LightMnemonic)
+//   - >= 1337 any tenant local / dev mesh (allows LightMnemonic)
+//   - 4..1336 reserved; treated as production by default
 func IsProductionNetwork(networkID uint32) bool {
 	switch networkID {
 	case constants.MainnetID, constants.TestnetID:
@@ -730,7 +705,7 @@ func IsProductionNetwork(networkID uint32) bool {
 }
 
 // RefuseLightMnemonicOnProduction returns a non-nil error iff the running
-// process is configured with any publicly-known mnemonic (LIGHT_MNEMONIC,
+// process is configured with any publicly-known mnemonic (LightMnemonic,
 // BIP-39 test vectors, Hardhat / Trezor demos, …) AND the supplied
 // networkID is a production network. Runtime guard required by HIP-0077
 // §"Mnemonic exposure" / "Auto-funded blast radius".
@@ -743,9 +718,9 @@ func IsProductionNetwork(networkID uint32) bool {
 // derivation point, never silently produces public-mnemonic-derived
 // signing keys.
 //
-// The guard widens beyond LIGHT_MNEMONIC to cover the broader
-// public-mnemonic blacklist (HIP-0077 red-review F31): BIP-39 abandon
-// vector, Hardhat default, Trezor demo, etc. See knownPublicMnemonics.
+// The guard covers the full public-mnemonic blacklist (HIP-0077 red-review
+// F31): LightMnemonic, BIP-39 abandon vector, Hardhat default, Trezor
+// demo, etc. See knownPublicMnemonics.
 func RefuseLightMnemonicOnProduction(networkID uint32) error {
 	mnemonic := getMnemonicEnv()
 	if mnemonic == "" {
@@ -761,11 +736,11 @@ func RefuseLightMnemonicOnProduction(networkID uint32) error {
 	}
 	return fmt.Errorf(
 		"refusing to derive keys: a publicly-known mnemonic is set on production "+
-			"network %d (mainnet/testnet/<1337). Public mnemonics (LIGHT_MNEMONIC, "+
+			"network %d (mainnet/testnet/<1337). Public mnemonics (LightMnemonic, "+
 			"BIP-39 test vectors, Hardhat/Trezor demos) are deterministic — anyone "+
-			"can derive every child key. Set MNEMONIC env var with "+
-			"a private hardware-RNG mnemonic loaded from KMS, or run on a dev "+
-			"network ID (>= 1337)", networkID,
+			"can derive every child key. Set %s with a private hardware-RNG "+
+			"mnemonic loaded from KMS, or run on a dev network ID (>= 1337)",
+		networkID, MnemonicEnvVar,
 	)
 }
 
@@ -776,7 +751,7 @@ func RefuseLightMnemonicOnProduction(networkID uint32) error {
 //
 // Closes HIP-0077 red-review F30 (the prior LoadKeysFromMnemonicEnv was
 // guard-free and operators could silently derive on production from
-// LIGHT_MNEMONIC).
+// the public LightMnemonic).
 func LoadKeysFromMnemonicEnvForNetwork(networkID uint32, numAccounts int) ([]KeyInfo, error) {
 	if err := RefuseLightMnemonicOnProduction(networkID); err != nil {
 		return nil, err
@@ -868,7 +843,7 @@ func BuildBIP44WalletAllocations(networkID uint32, numKeys int, amountPerKey uin
 	_ = networkID // see comment above
 	mnemonic := getMnemonicEnv()
 	if mnemonic == "" {
-		return nil, fmt.Errorf("wallet allocations require MNEMONIC env var")
+		return nil, fmt.Errorf("wallet allocations require %s env var", MnemonicEnvVar)
 	}
 	if !bip39.IsMnemonicValid(mnemonic) {
 		return nil, fmt.Errorf("invalid mnemonic for wallet key derivation")
@@ -933,13 +908,13 @@ func BuildBIP44WalletAllocations(networkID uint32, numKeys int, amountPerKey uin
 	return allocations, nil
 }
 
-// BuildConfigFromEnv builds genesis config from environment variables
-// Checks in order: KEYS_DIR, mnemonic (MNEMONIC/LIGHT_MNEMONIC), PRIVATE_KEY
+// BuildConfigFromEnv builds genesis config from environment variables.
+// Checks in order: KEYS_DIR, LUX_MNEMONIC, PRIVATE_KEY.
 //
 // Architecture:
-//   - X-Chain: 100 accounts × 500M LUX each, FREE
-//   - P-Chain: 100 accounts × 500M LUX each, vesting 1%/year from 2020-01-01
-//   - C-Chain: treasury 0x9011...4714 gets 2T LUX
+//   - X-Chain: DefaultNumAccounts × allocationPerKey, immediate spend
+//   - P-Chain: DefaultNumAccounts × allocationPerKey, immediate spend
+//   - C-Chain: treasury 0x9011...4714 gets 2T LUX (no per-account alloc)
 func BuildConfigFromEnv(networkID uint32, numValidators int, allocationPerKey uint64) (*Config, error) {
 	var err error
 
@@ -960,7 +935,7 @@ func BuildConfigFromEnv(networkID uint32, numValidators int, allocationPerKey ui
 	// m/44'/9000'/0'/0/i (the same path the genesis CLI's -bip44-wallet-keys
 	// flag uses, and the same path the derive100 / luxfi wallet UIs use).
 	// This is what every user-facing tool that scans the chain for funded
-	// addresses will expect — derive100 against $MNEMONIC and the
+	// addresses will expect — derive100 against $LUX_MNEMONIC and the
 	// addresses here must match byte-for-byte.
 	//
 	// NOTE: this is intentionally a SEPARATE concern from

pkg/genesis/light_mnemonic_guard_test.go

@@ -53,16 +53,16 @@ func TestIsProductionNetwork(t *testing.T) {
 }
 
 // TestIsKnownPublicMnemonic — F31 expansion. The guard now refuses every
-// known-public mnemonic, not just LIGHT_MNEMONIC. The BIP-39 abandon
+// known-public mnemonic, not just LightMnemonic. The BIP-39 abandon
 // vector, Hardhat default, and Trezor demo previously passed the
-// LIGHT_MNEMONIC-only check.
+// LightMnemonic-only check.
 func TestIsKnownPublicMnemonic(t *testing.T) {
 	cases := []struct {
 		name     string
 		mnemonic string
 		want     bool
 	}{
-		{"LIGHT_MNEMONIC", LightMnemonic, true},
+		{"LightMnemonic", LightMnemonic, true},
 		{"BIP-39 abandon vector #1",
 			"abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
 			true},
@@ -93,48 +93,46 @@ func TestIsKnownPublicMnemonic(t *testing.T) {
 
 // TestRefuseLightMnemonicOnProduction is the headline F12 fix +
 // F31 expansion: derivation MUST refuse on production for any
-// publicly-known mnemonic, not just the literal LIGHT_MNEMONIC.
+// publicly-known mnemonic, not just the literal LightMnemonic.
 func TestRefuseLightMnemonicOnProduction(t *testing.T) {
 	// 1. No mnemonic set: not our problem at this layer.
-	t.Setenv("MNEMONIC", "")
-	t.Setenv("LIGHT_MNEMONIC", "")
+	t.Setenv("LUX_MNEMONIC", "")
 	if err := RefuseLightMnemonicOnProduction(constants.MainnetID); err != nil {
 		t.Fatalf("no-mnemonic case: unexpected error: %v", err)
 	}
 
-	// 2. LIGHT_MNEMONIC on dev mesh: allowed.
-	t.Setenv("LIGHT_MNEMONIC", LightMnemonic)
+	// 2. LightMnemonic on dev mesh: allowed.
+	t.Setenv("LUX_MNEMONIC", LightMnemonic)
 	if err := RefuseLightMnemonicOnProduction(constants.LocalID); err != nil {
-		t.Fatalf("LIGHT_MNEMONIC on LocalID(1337): unexpected error: %v", err)
+		t.Fatalf("LightMnemonic on LocalID(1337): unexpected error: %v", err)
 	}
 
-	// 3. LIGHT_MNEMONIC on mainnet: REFUSED.
+	// 3. LightMnemonic on mainnet: REFUSED.
 	if err := RefuseLightMnemonicOnProduction(constants.MainnetID); err == nil {
-		t.Fatalf("LIGHT_MNEMONIC on MainnetID: expected refusal, got nil")
+		t.Fatalf("LightMnemonic on MainnetID: expected refusal, got nil")
 	}
 
-	// 4. LIGHT_MNEMONIC on testnet: REFUSED.
+	// 4. LightMnemonic on testnet: REFUSED.
 	if err := RefuseLightMnemonicOnProduction(constants.TestnetID); err == nil {
-		t.Fatalf("LIGHT_MNEMONIC on TestnetID: expected refusal, got nil")
+		t.Fatalf("LightMnemonic on TestnetID: expected refusal, got nil")
 	}
 
-	// 5. F31: BIP-39 abandon vector via MNEMONIC on mainnet → REFUSED
+	// 5. F31: BIP-39 abandon vector via LUX_MNEMONIC on mainnet → REFUSED
 	// (was previously ALLOWED — see prior red-review F31).
-	t.Setenv("LIGHT_MNEMONIC", "")
-	t.Setenv("MNEMONIC", "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about")
+	t.Setenv("LUX_MNEMONIC", "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about")
 	if err := RefuseLightMnemonicOnProduction(constants.MainnetID); err == nil {
 		t.Fatalf("BIP-39 abandon vector on mainnet: expected refusal, got nil")
 	}
 
 	// 6. F31: Hardhat default on mainnet → REFUSED.
-	t.Setenv("MNEMONIC", "test test test test test test test test test test test junk")
+	t.Setenv("LUX_MNEMONIC", "test test test test test test test test test test test junk")
 	if err := RefuseLightMnemonicOnProduction(constants.MainnetID); err == nil {
 		t.Fatalf("Hardhat default on mainnet: expected refusal, got nil")
 	}
 
 	// 7. Real (non-public) mnemonic on mainnet: allowed.
 	realMnemonic := "venue armor mouse cheese fork stem siren acquire rocket cabbage sentence vibrant"
-	t.Setenv("MNEMONIC", realMnemonic)
+	t.Setenv("LUX_MNEMONIC", realMnemonic)
 	if err := RefuseLightMnemonicOnProduction(constants.MainnetID); err != nil {
 		t.Fatalf("real mnemonic on mainnet: unexpected error: %v", err)
 	}
@@ -147,19 +145,18 @@ func TestRefuseLightMnemonicOnProduction(t *testing.T) {
 // trusted callers), this one fails-closed on a production network with
 // any public mnemonic.
 func TestLoadKeysFromMnemonicEnvForNetwork(t *testing.T) {
-	// Setup: LIGHT_MNEMONIC on mainnet should refuse derivation.
-	t.Setenv("MNEMONIC", "")
-	t.Setenv("LIGHT_MNEMONIC", LightMnemonic)
+	// Setup: LightMnemonic on mainnet should refuse derivation.
+	t.Setenv("LUX_MNEMONIC", LightMnemonic)
 	_, err := LoadKeysFromMnemonicEnvForNetwork(constants.MainnetID, 1)
 	if err == nil {
-		t.Fatalf("LoadKeysFromMnemonicEnvForNetwork: LIGHT_MNEMONIC on mainnet must refuse, got nil")
+		t.Fatalf("LoadKeysFromMnemonicEnvForNetwork: LightMnemonic on mainnet must refuse, got nil")
 	}
 
 	// Same env on a dev mesh should succeed (the guard does not refuse;
 	// derivation proceeds via the underlying LoadKeysFromMnemonicEnv).
 	keys, err := LoadKeysFromMnemonicEnvForNetwork(constants.LocalID, 1)
 	if err != nil {
-		t.Fatalf("LoadKeysFromMnemonicEnvForNetwork: LIGHT_MNEMONIC on dev (LocalID=1337): unexpected error: %v", err)
+		t.Fatalf("LoadKeysFromMnemonicEnvForNetwork: LightMnemonic on dev (LocalID=1337): unexpected error: %v", err)
 	}
 	if len(keys) != 1 {
 		t.Fatalf("expected 1 key, got %d", len(keys))

pkg/genesis/networks.go

@@ -0,0 +1,45 @@
+// Copyright (C) 2019-2026, Lux Industries Inc. All rights reserved.
+// See the file LICENSE for licensing terms.
+
+package genesis
+
+import "github.com/luxfi/constants"
+
+// Canonical network ID map — the only legal values for the primary
+// network ID. Anything else is "custom" and a bug.
+//
+//	  primary network ID            EVM (C-Chain) chain ID
+//	  ──────────────────            ──────────────────────
+//	  constants.MainnetID  (1)      constants.MainnetChainID (96369)
+//	  constants.TestnetID  (2)      constants.TestnetChainID (96368)
+//	  constants.DevnetID   (3)      constants.DevnetChainID  (96370)
+//	  constants.LocalID    (1337)   constants.LocalChainID   (31337)
+//
+// The primary network ID is SHARED across all Lux-derived L1s (Lux,
+// Hanzo, Zoo, Pars, …). EVM chain IDs are per-subnet, per-env.
+//
+// Mnemonic source (LUX_MNEMONIC):
+//   - mainnet/testnet/devnet (1/2/3): private hardware-RNG mnemonic from
+//     KMS; RefuseLightMnemonicOnProduction enforces this.
+//   - local (1337): LightMnemonic is the well-known dev seed value.
+//
+// All four envs read the mnemonic from the same env var (LUX_MNEMONIC);
+// per-env isolation comes from a different mnemonic per env, not from
+// the env-var name.
+var CanonicalPrimaryNetworkIDs = []uint32{
+	constants.MainnetID, // 1
+	constants.TestnetID, // 2
+	constants.DevnetID,  // 3
+	constants.LocalID,   // 1337
+}
+
+// IsCanonicalPrimaryNetwork reports whether networkID is one of the four
+// canonical primary network IDs. Custom IDs (e.g. UnitTestID) are not
+// canonical and callers should treat them explicitly.
+func IsCanonicalPrimaryNetwork(networkID uint32) bool {
+	switch networkID {
+	case constants.MainnetID, constants.TestnetID, constants.DevnetID, constants.LocalID:
+		return true
+	}
+	return false
+}

pkg/genesis/validator_keys.go

@@ -27,13 +27,8 @@ const (
 
 	// DefaultValidatorAllocation is 1B LUX per validator
 	DefaultValidatorAllocation uint64 = OneBillionLUX
-
-	// VestingPeriods is 100 years (1% unlocks per year)
-	VestingPeriods = 100
 )
 
-// StakingStartTime and UnlockInterval are defined in keys.go
-
 // ValidatorKeyInfo contains computed addresses from a validator's private key
 type ValidatorKeyInfo struct {
 	PrivKeyHex string      // Hex-encoded private key
@@ -167,42 +162,6 @@ func GeneratePChainAllocations(keys []ValidatorKeyInfo, hrp string, amountPerKey
 	return allocations, nil
 }
 
-// GeneratePChainAllocationsWithVesting creates P-chain allocations with a vesting schedule.
-// Each key gets the specified amount vested over the given number of periods.
-func GeneratePChainAllocationsWithVesting(keys []ValidatorKeyInfo, hrp string, amountPerKey uint64, startTime uint64, interval uint64, periods int) ([]AllocationJSON, error) {
-	if amountPerKey == 0 {
-		amountPerKey = OneBillionLUX
-	}
-	if startTime == 0 {
-		startTime = StakingStartTime
-	}
-	if interval == 0 {
-		interval = UnlockInterval
-	}
-	if periods == 0 {
-		periods = 100 // 100 years default
-	}
-
-	allocations := make([]AllocationJSON, len(keys))
-	for i, key := range keys {
-		utxoAddr, err := FormatChainAddress("P", hrp, key.ShortID)
-		if err != nil {
-			return nil, fmt.Errorf("failed to format address for key %d: %w", i, err)
-		}
-
-		// Build vesting schedule
-		unlockSchedule := buildUnlockSchedule(amountPerKey, startTime, interval, periods)
-
-		allocations[i] = AllocationJSON{
-			EVMAddr:        key.EVMAddr,
-			UTXOAddr:       utxoAddr,
-			InitialAmount:  amountPerKey, // X-chain initial amount
-			UnlockSchedule: unlockSchedule,
-		}
-	}
-	return allocations, nil
-}
-
 // GenerateCChainAlloc creates C-chain genesis allocations for validator keys.
 func GenerateCChainAlloc(keys []ValidatorKeyInfo, amount uint64) map[string]Balance {
 	if amount == 0 {