fix(idl): align LEZ account metadata

Mark unconditional signer, init, and mutable accounts in guest entrypoints.

Regenerate IDL artifacts for token, ATA, stablecoin, TWAP oracle, and AMM.

programs/token/methods/guest/src/bin/token.rs

@@ -19,7 +19,9 @@ mod token {
     /// Fresh public recipients must be explicitly authorized in the same transaction.
     #[instruction]
     pub fn transfer(
+        #[account(mut, signer)]
         sender: AccountWithMetadata,
+        #[account(mut)]
         recipient: AccountWithMetadata,
         amount_to_transfer: u128,
     ) -> SpelResult {
@@ -34,7 +36,9 @@ mod token {
     /// Definition and holding targets must be uninitialized and authorized.
     #[instruction]
     pub fn new_fungible_definition(
+        #[account(init, signer)]
         definition_target_account: AccountWithMetadata,
+        #[account(init, signer)]
         holding_target_account: AccountWithMetadata,
         name: String,
         total_supply: u128,
@@ -58,8 +62,11 @@ mod token {
     )]
     #[instruction]
     pub fn new_definition_with_metadata(
+        #[account(init, signer)]
         definition_target_account: AccountWithMetadata,
+        #[account(init, signer)]
         holding_target_account: AccountWithMetadata,
+        #[account(init, signer)]
         metadata_target_account: AccountWithMetadata,
         new_definition: token_core::NewTokenDefinition,
         metadata: Box<token_core::NewTokenMetadata>,
@@ -82,6 +89,7 @@ mod token {
     pub fn initialize_account(
         ctx: ProgramContext,
         definition_account: AccountWithMetadata,
+        #[account(init, signer)]
         account_to_initialize: AccountWithMetadata,
     ) -> SpelResult {
         Ok(spel_framework::SpelOutput::execute(
@@ -97,7 +105,9 @@ mod token {
     /// Burn tokens from the holder's account.
     #[instruction]
     pub fn burn(
+        #[account(mut)]
         definition_account: AccountWithMetadata,
+        #[account(mut, signer)]
         user_holding_account: AccountWithMetadata,
         amount_to_burn: u128,
     ) -> SpelResult {
@@ -113,7 +123,9 @@ mod token {
     #[instruction]
     pub fn mint(
         ctx: ProgramContext,
+        #[account(mut, signer)]
         definition_account: AccountWithMetadata,
+        #[account(mut)]
         user_holding_account: AccountWithMetadata,
         amount_to_mint: u128,
     ) -> SpelResult {
@@ -129,7 +141,9 @@ mod token {
     /// The printed copy target must be uninitialized and authorized.
     #[instruction]
     pub fn print_nft(
+        #[account(mut, signer)]
         master_account: AccountWithMetadata,
+        #[account(init, signer)]
         printed_account: AccountWithMetadata,
     ) -> SpelResult {
         Ok(spel_framework::SpelOutput::execute(token_program::print_nft::print_nft(