refactor: set better default compressible values#2082
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ananas-block merged 4 commits intomainfrom Dec 2, 2025
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WalkthroughRemoved explicit lifetime annotations from two public function signatures, switched CompressibleParams/CompressibleParamsInfos constructors to no-arg/default-driven forms with updated defaults, increased the SLOTS_PER_EPOCH constant, and minor doc-comment indentation fix. Changes
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~25 minutes
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⛔ Files ignored due to path filters (3)
sdk-tests/sdk-ctoken-test/src/create_ata.rsis excluded by none and included by nonesdk-tests/sdk-ctoken-test/src/create_ata2.rsis excluded by none and included by nonesdk-tests/sdk-ctoken-test/src/create_token_account.rsis excluded by none and included by none
📒 Files selected for processing (5)
program-libs/compressible/src/rent/config.rs(1 hunks)programs/compressed-token/program/src/create_token_account.rs(1 hunks)programs/compressed-token/program/src/ctoken_transfer.rs(1 hunks)programs/compressed-token/program/src/shared/create_pda_account.rs(1 hunks)sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs(2 hunks)
🧰 Additional context used
📓 Path-based instructions (7)
programs/compressed-token/program/src/**/*.rs
📄 CodeRabbit inference engine (programs/compressed-token/program/CLAUDE.md)
programs/compressed-token/program/src/**/*.rs: Compressed token accounts (ctoken solana accounts) must use the same account layout as SPL tokens with a custom Compressible extension
Compressed mint accounts (cmints) support only one extension: TokenMetadata
Files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
programs/compressed-token/program/src/create_*_account*.rs
📄 CodeRabbit inference engine (programs/compressed-token/program/CLAUDE.md)
Token account creation instructions (Create CToken Account and Create Associated CToken Account) require ACTIVE config validation only
Files:
programs/compressed-token/program/src/create_token_account.rs
**/programs/**/src/**/*.rs
📄 CodeRabbit inference engine (DOCS.md)
For accounts with associated methods, add a Methods section grouping methods by purpose (Validation, Constructors, PDA Derivation, etc.) with concise parameter names in signatures, one-line action-oriented descriptions, and concrete values where helpful (constants, defaults)
Files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
programs/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
Unit tests in programs must not depend on light-test-utils; any test requiring light-test-utils must be in program-tests
Files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
sdk-libs/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
Unit tests in sdk-libs must not depend on light-test-utils; any test requiring light-test-utils must be in sdk-tests
Files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
program-libs/compressible/**/*.rs
📄 CodeRabbit inference engine (program-libs/compressible/CLAUDE.md)
program-libs/compressible/**/*.rs: Use Anchor serialization for CompressibleConfig account structures in Rust programs
Implement state validation methods (validate_active,validate_not_inactive) for CompressibleConfig account state verification
Derive PDA addresses usingderive_pdaandderive_v1_config_pdafunctions for CToken account configuration
Use rent curve algorithms (rent_curve_per_epoch) from RentConfig for calculating compressibility thresholds
Calculate claimable rent usingclaimable_lamportsfunction before closing CToken accounts
Error types must use numeric codes in the 19xxx range for rent/config module errors
Support multiple serialization formats (Anchor, Pinocchio, Borsh) for cross-program compatibility
Usecalculate_rent_and_balancefunction to determine if a CToken account is compressible
Usecalculate_close_lamportsfunction to determine lamport distribution when closing CToken accounts
Files:
program-libs/compressible/src/rent/config.rs
program-libs/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
Unit tests in program-libs must not depend on light-test-utils; any test requiring light-test-utils must be in program-tests
Files:
program-libs/compressible/src/rent/config.rs
🧠 Learnings (54)
📓 Common learnings
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/config.rs : Set CompressibleConfig default values for CToken V1: base_rent = 1220, compression_cost = 11000, lamports_per_byte_per_epoch = 10, and address_space[0] = `amt2kaJA14v3urZbZvnc5v2np8jqvc4Z8zDep5wbtzx`
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_close_lamports` function to determine lamport distribution when closing CToken accounts
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement rent constants with values: BASE_RENT = 1,220 lamports, RENT_PER_BYTE = 10 lamports, SLOTS_PER_EPOCH = 432,000.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `get_last_funded_epoch` function to determine the last epoch number covered by rent payments.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_inner` as a generic helper function with INCLUDE_CURRENT const parameter to calculate rent components, returning (required_epochs, rent_per_epoch, epochs_paid, unutilized_lamports).
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use rent curve algorithms (`rent_curve_per_epoch`) from RentConfig for calculating compressibility thresholds
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `rent_curve_per_epoch` function with formula: base_rent + (num_bytes * lamports_per_byte_per_epoch).
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_close_lamports` function to return (u64, u64) tuple splitting lamports between rent recipient and user, with rent recipient receiving completed epochs and user receiving partial epoch remainder.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `claimable_lamports` function to return None if account is compressible, otherwise return Some(amount) for completed epochs only (excluding current ongoing epoch).
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Implement account compressibility states in the following order: Funded (rent for current + 1 epoch) → Compressible (lacks rent for current + 1 epoch) → Claimable (funded but past epochs unclaimed)
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : RentConfig struct must be exactly 8 bytes and contain: base_rent (u16), compression_cost (u16), lamports_per_byte_per_epoch (u8), and 3 bytes of padding.
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Derive PDA addresses using `derive_pda` and `derive_v1_config_pda` functions for CToken account configuration
Applied to files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/shared/create_pda_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:59:54.233Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/PACKED_ACCOUNTS.md:0-0
Timestamp: 2025-11-24T17:59:54.233Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/**/*.rs : Provide descriptive names in ProgramPackedAccounts error messages (e.g., 'token_mint' instead of 'account')
Applied to files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use Anchor serialization for CompressibleConfig account structures in Rust programs
Applied to files:
programs/compressed-token/program/src/create_token_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:58:50.237Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_CHECKS.md:0-0
Timestamp: 2025-11-24T17:58:50.237Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/checks.rs : Use generic `AccountInfoTrait` parameter for all account validation functions to enable compatibility with both Solana and Pinocchio runtimes
Applied to files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/create_*_account*.rs : Token account creation instructions (Create CToken Account and Create Associated CToken Account) require ACTIVE config validation only
Applied to files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T17:59:03.485Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_INFO_TRAIT.md:0-0
Timestamp: 2025-11-24T17:59:03.485Z
Learning: Applies to program-libs/account-checks/docs/**/*.rs : Generic functions accepting AccountInfoTrait should use trait bounds in function signatures rather than concrete account types
Applied to files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:03.786Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:03.786Z
Learning: Applies to program-libs/account-checks/src/account_info/*.rs : Implement AccountInfoTrait for runtime-agnostic account handling with unified data access interface (`try_borrow_data`, `try_borrow_mut_data`)
Applied to files:
programs/compressed-token/program/src/create_token_account.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_close_lamports` function to determine lamport distribution when closing CToken accounts
Applied to files:
programs/compressed-token/program/src/create_token_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/programs/**/*.rs : Use Anchor's `AccountDeserialize::try_deserialize` for CompressibleConfig when Anchor feature is enabled, which includes automatic discriminator validation
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_rent_and_balance` function to determine if a CToken account is compressible
Applied to files:
programs/compressed-token/program/src/create_token_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Validate CompressibleConfig account ownership against Light Registry Program address (`Lighton6oQpVkeewmo2mcPTQQp7kYHr4fWpAgJyEmDX`) before processing
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T17:57:39.230Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/batched-merkle-tree/docs/QUEUE_ACCOUNT.md:0-0
Timestamp: 2025-11-24T17:57:39.230Z
Learning: Applies to program-libs/batched-merkle-tree/docs/src/queue.rs : Validate account ownership by Light account compression program using `check_owner` from `light-account-checks` when deserializing `BatchedQueueAccount` with `output_from_account_info`
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Use CompressibleConfig discriminator `[180, 4, 231, 26, 220, 144, 55, 168]` for account validation in Solana programs and clients
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: CompressibleConfig module provides account configuration and rent management for the Light Registry program
Applied to files:
programs/compressed-token/program/src/create_token_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:58:50.237Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_CHECKS.md:0-0
Timestamp: 2025-11-24T17:58:50.237Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/checks.rs : Implement `check_account_info` function to validate account ownership by program_id and verify discriminator matches type T
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T17:59:03.485Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_INFO_TRAIT.md:0-0
Timestamp: 2025-11-24T17:59:03.485Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/account_info/test_account_info.rs : Create a test-only AccountInfo mock implementation without external dependencies for unit testing AccountInfoTrait implementations
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T17:59:36.701Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/DISCRIMINATOR.md:0-0
Timestamp: 2025-11-24T17:59:36.701Z
Learning: Applies to program-libs/account-checks/docs/**/account-checks/**/*.rs : Document discriminator values in code comments to make account types discoverable and maintainable
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/docs/ACCOUNTS.md : All account documentation must include: description, discriminator, state layout, serialization example, hashing (for compressed accounts only), derivation (for PDAs only), and associated instructions
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T17:59:03.485Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_INFO_TRAIT.md:0-0
Timestamp: 2025-11-24T17:59:03.485Z
Learning: Applies to program-libs/account-checks/docs/**/*.rs : PDA derivation functions should accept `&[&[u8]]` for seeds and `&[u8; 32]` for program_id when using AccountInfoTrait methods `find_program_address()` or `create_program_address()`
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T17:55:32.059Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: sdk-tests/sdk-ctoken-test/README.md:0-0
Timestamp: 2025-11-24T17:55:32.059Z
Learning: Document compressible token account features and PDA pattern use cases in program documentation
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:02:58.971Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: DOCS.md:0-0
Timestamp: 2025-11-24T18:02:58.971Z
Learning: Applies to **/docs/**/*ACCOUNT*.md : For PDA accounts, document the derivation (seeds used to derive the account) and bump (whether bump is stored or derived)
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:01:54.689Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/docs/instructions/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:54.689Z
Learning: Applies to programs/compressed-token/program/docs/instructions/**/ACCOUNTS.md : ACCOUNTS.md must contain complete account layouts and data structures with references to code paths
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:01:03.786Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:03.786Z
Learning: Applies to program-libs/account-checks/src/account_info/*.rs : Provide PDA derivation functions (`find_program_address`, `create_program_address`) and permission checks in AccountInfoTrait
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/config.rs : Set CompressibleConfig default values for CToken V1: base_rent = 1220, compression_cost = 11000, lamports_per_byte_per_epoch = 10, and address_space[0] = `amt2kaJA14v3urZbZvnc5v2np8jqvc4Z8zDep5wbtzx`
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rsprogram-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T17:55:17.323Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: sdk-libs/macros/src/compressible/README.md:0-0
Timestamp: 2025-11-24T17:55:17.323Z
Learning: Applies to sdk-libs/macros/src/compressible/**/decompress_context.rs : Decompression trait implementation (`DecompressContext`) with account accessors, PDA/token separation logic, and token processing delegation should be in `decompress_context.rs`
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/{claim,transfer2}/**/*.rs : Rent authority can only compress accounts when is_compressible() returns true; lamport distribution on close is: rent → rent_sponsor, unutilized → destination
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Derive CompressibleConfig PDA using seeds `[b"compressible_config", version.to_le_bytes()]` with version parameter to support multiple config versions
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : CompressibleConfig struct must use `#[repr(C)]` for proper memory layout with fixed field ordering: version (u16, 2 bytes), state (u8, 1 byte), bump (u8, 1 byte), update_authority (Pubkey, 32 bytes), withdrawal_authority (Pubkey, 32 bytes), rent_sponsor (Pubkey, 32 bytes), compression_authority (Pubkey, 32 bytes), rent_sponsor_bump (u8, 1 byte), compression_authority_bump (u8, 1 byte), rent_config (RentConfig, 8 bytes), address_space ([Pubkey; 4], 128 bytes), and _place_holder ([u8; 32], 32 bytes) for total of 256 bytes
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : RentConfig struct must use fixed-size fields: base_rent (u16, 2 bytes), compression_cost (u16, 2 bytes), lamports_per_byte_per_epoch (u8, 1 byte), and _place_holder_bytes ([u8; 3], 3 bytes padding) for proper 8-byte alignment
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rsprogram-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `claimable_lamports` function to return None if account is compressible, otherwise return Some(amount) for completed epochs only (excluding current ongoing epoch).
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Light Protocol accounts must satisfy both Solana rent exemption and Light Protocol rent requirements, plus an 11,000 lamport compression incentive during creation
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : RentConfig struct must be exactly 8 bytes and contain: base_rent (u16), compression_cost (u16), lamports_per_byte_per_epoch (u8), and 3 bytes of padding.
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rsprogram-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : Define CompressibleConfig constant `LEN = 256` to represent the account size in bytes for rent calculation and account creation
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Light Protocol rent is calculated per epoch as: 1220 minimum + (data_bytes * 10) lamports per epoch
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rsprogram-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_and_balance` function to determine compressibility by checking if account balance covers required rent for epochs since last claim, returning (bool, u64) tuple.
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Implement account compressibility states in the following order: Funded (rent for current + 1 epoch) → Compressible (lacks rent for current + 1 epoch) → Claimable (funded but past epochs unclaimed)
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Accounts become compressible when they lack rent for the current epoch plus the next epoch (compressibility window).
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: When working with ctoken accounts having the compressible extension, you must read program-libs/compressible/docs/ documentation including RENT.md, CONFIG_ACCOUNT.md, and SOLANA_RENT.md for rent system understanding
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/close_token_account.rs : Close Token Account instruction must return rent exemption to rent recipient if compressible, and return remaining lamports to destination account
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rsprograms/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/transfer2/**/*.rs : Transfer2 instruction must support Compress, Decompress, and CompressAndClose operations with multi-mint support and sum checks
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:02:15.670Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/registry/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:02:15.670Z
Learning: Applies to programs/registry/src/account_compression_cpi/*.rs : Create wrapper instruction module at `src/account_compression_cpi/new_operation.rs` with `NewOperationContext` struct defining required accounts
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:54.689Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/docs/instructions/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:54.689Z
Learning: Applies to programs/compressed-token/program/docs/instructions/instructions/DECOMPRESSED_TRANSFER.md : Decompressed Transfer documentation must cover SPL-compatible transfers between decompressed accounts
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:54.689Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/docs/instructions/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:54.689Z
Learning: Applies to programs/compressed-token/program/docs/instructions/instructions/CREATE_TOKEN_ACCOUNT.md : Create Token Account Instructions documentation must cover creation of regular and associated ctoken accounts
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement rent constants with values: BASE_RENT = 1,220 lamports, RENT_PER_BYTE = 10 lamports, SLOTS_PER_EPOCH = 432,000.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `get_last_funded_epoch` function to determine the last epoch number covered by rent payments.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `rent_curve_per_epoch` function with formula: base_rent + (num_bytes * lamports_per_byte_per_epoch).
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_inner` as a generic helper function with INCLUDE_CURRENT const parameter to calculate rent components, returning (required_epochs, rent_per_epoch, epochs_paid, unutilized_lamports).
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use rent curve algorithms (`rent_curve_per_epoch`) from RentConfig for calculating compressibility thresholds
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_close_lamports` function to return (u64, u64) tuple splitting lamports between rent recipient and user, with rent recipient receiving completed epochs and user receiving partial epoch remainder.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `get_rent` function to calculate total rent across multiple epochs using: rent_curve_per_epoch * epochs.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Rent is calculated per epoch (432,000 slots). Accounts must maintain sufficient balance for all epochs since last claim.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Use `rent_curve_per_epoch(base_rent, lamports_per_byte_per_epoch, num_bytes)` function for base rent calculations in all rent operations.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Use epoch-based accounting (432,000 slots ≈ 2.5 days) instead of continuous time for Light Protocol rent collection
Applied to files:
program-libs/compressible/src/rent/config.rs
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- GitHub Check: Test batched-merkle-tree-simulate
🔇 Additional comments (6)
program-libs/compressible/src/rent/config.rs (1)
11-12: LGTM — custom epoch duration correctly calculated.The math checks out: 90 min × 60 sec ÷ 0.4 sec/slot = 13,500 slots. This defines a 1.5-hour "compressible rent epoch" distinct from Solana's native ~2-day epoch. With
pre_pay_num_epochs: 16in the SDK (changed elsewhere in this PR), accounts are pre-funded for 24 hours.programs/compressed-token/program/src/shared/create_pda_account.rs (1)
35-35: Trivial doc formatting fix.Indentation adjustment only — no functional change.
programs/compressed-token/program/src/ctoken_transfer.rs (1)
18-19: Good cleanup — explicit lifetime was redundant.Rust's lifetime elision rules already infer the correct lifetimes here. Since the return type (
Result<(), ProgramError>) doesn't borrow from the inputs, the explicit'aannotation added no value. Cleaner signature.programs/compressed-token/program/src/create_token_account.rs (1)
100-102: Lifetime elision handles this correctly.With a single input reference and a reference return type, Rust's elision rules automatically tie the output lifetime to the input. The explicit
'infoannotation was unnecessary — the compiler infersfn parse_config_account(config_account: &AccountInfo) -> Result<&CompressibleConfig, ...>means the returned&CompressibleConfigborrows fromconfig_account.sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs (2)
24-25: Verify default values against PR description.The code sets
pre_pay_num_epochs: 16, which at 1.5 hours/epoch equals 24 hours — matching the PR objective. However, the PR description states "24h (35 epochs)" which doesn't match. Please clarify:
- Is 16 epochs the intended value (24 hours)?
- Or should this be 35 epochs (~52.5 hours)?
Also,
lamports_per_write: 766— can you confirm how this value was derived? I want to ensure it properly covers the rent curve for the expected account sizes.
32-35: Remove this review comment — no breaking change detected.The codebase shows no evidence that
CompressibleParams::new()ever accepted parameters. All current and past usages customize the struct via either struct literal syntax (CompressibleParams { pre_pay_num_epochs: X, lamports_per_write: Y, ... }) or the builder methodcompress_to_pubkey(). SinceCompressibleParamshas public fields, consumers retain full control over customization without depending on a parameterized constructor.Likely an incorrect or invalid review comment.
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📜 Review details
Configuration used: Path: .coderabbit.yaml
Review profile: ASSERTIVE
Plan: Pro
⛔ Files ignored due to path filters (3)
sdk-tests/sdk-ctoken-test/src/create_ata.rsis excluded by none and included by nonesdk-tests/sdk-ctoken-test/src/create_ata2.rsis excluded by none and included by nonesdk-tests/sdk-ctoken-test/src/create_token_account.rsis excluded by none and included by none
📒 Files selected for processing (5)
program-libs/compressible/src/rent/config.rs(1 hunks)programs/compressed-token/program/src/create_token_account.rs(1 hunks)programs/compressed-token/program/src/ctoken_transfer.rs(1 hunks)programs/compressed-token/program/src/shared/create_pda_account.rs(1 hunks)sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs(2 hunks)
🧰 Additional context used
📓 Path-based instructions (7)
programs/compressed-token/program/src/**/*.rs
📄 CodeRabbit inference engine (programs/compressed-token/program/CLAUDE.md)
programs/compressed-token/program/src/**/*.rs: Compressed token accounts (ctoken solana accounts) must use the same account layout as SPL tokens with a custom Compressible extension
Compressed mint accounts (cmints) support only one extension: TokenMetadata
Files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rs
**/programs/**/src/**/*.rs
📄 CodeRabbit inference engine (DOCS.md)
For accounts with associated methods, add a Methods section grouping methods by purpose (Validation, Constructors, PDA Derivation, etc.) with concise parameter names in signatures, one-line action-oriented descriptions, and concrete values where helpful (constants, defaults)
Files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rs
programs/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
Unit tests in programs must not depend on light-test-utils; any test requiring light-test-utils must be in program-tests
Files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rs
program-libs/compressible/**/*.rs
📄 CodeRabbit inference engine (program-libs/compressible/CLAUDE.md)
program-libs/compressible/**/*.rs: Use Anchor serialization for CompressibleConfig account structures in Rust programs
Implement state validation methods (validate_active,validate_not_inactive) for CompressibleConfig account state verification
Derive PDA addresses usingderive_pdaandderive_v1_config_pdafunctions for CToken account configuration
Use rent curve algorithms (rent_curve_per_epoch) from RentConfig for calculating compressibility thresholds
Calculate claimable rent usingclaimable_lamportsfunction before closing CToken accounts
Error types must use numeric codes in the 19xxx range for rent/config module errors
Support multiple serialization formats (Anchor, Pinocchio, Borsh) for cross-program compatibility
Usecalculate_rent_and_balancefunction to determine if a CToken account is compressible
Usecalculate_close_lamportsfunction to determine lamport distribution when closing CToken accounts
Files:
program-libs/compressible/src/rent/config.rs
program-libs/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
Unit tests in program-libs must not depend on light-test-utils; any test requiring light-test-utils must be in program-tests
Files:
program-libs/compressible/src/rent/config.rs
programs/compressed-token/program/src/create_*_account*.rs
📄 CodeRabbit inference engine (programs/compressed-token/program/CLAUDE.md)
Token account creation instructions (Create CToken Account and Create Associated CToken Account) require ACTIVE config validation only
Files:
programs/compressed-token/program/src/create_token_account.rs
sdk-libs/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
Unit tests in sdk-libs must not depend on light-test-utils; any test requiring light-test-utils must be in sdk-tests
Files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
🧠 Learnings (52)
📓 Common learnings
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/config.rs : Set CompressibleConfig default values for CToken V1: base_rent = 1220, compression_cost = 11000, lamports_per_byte_per_epoch = 10, and address_space[0] = `amt2kaJA14v3urZbZvnc5v2np8jqvc4Z8zDep5wbtzx`
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_close_lamports` function to determine lamport distribution when closing CToken accounts
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement compression cost and incentive values as constants: COMPRESSION_COST = 10,000 lamports, COMPRESSION_INCENTIVE = 1,000 lamports.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `claimable_lamports` function to return None if account is compressible, otherwise return Some(amount) for completed epochs only (excluding current ongoing epoch).
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement rent constants with values: BASE_RENT = 1,220 lamports, RENT_PER_BYTE = 10 lamports, SLOTS_PER_EPOCH = 432,000.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_inner` as a generic helper function with INCLUDE_CURRENT const parameter to calculate rent components, returning (required_epochs, rent_per_epoch, epochs_paid, unutilized_lamports).
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `get_last_funded_epoch` function to determine the last epoch number covered by rent payments.
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Derive PDA addresses using `derive_pda` and `derive_v1_config_pda` functions for CToken account configuration
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:59:03.485Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_INFO_TRAIT.md:0-0
Timestamp: 2025-11-24T17:59:03.485Z
Learning: Applies to program-libs/account-checks/docs/**/*.rs : PDA derivation functions should accept `&[&[u8]]` for seeds and `&[u8; 32]` for program_id when using AccountInfoTrait methods `find_program_address()` or `create_program_address()`
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T17:59:36.701Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/DISCRIMINATOR.md:0-0
Timestamp: 2025-11-24T17:59:36.701Z
Learning: Applies to program-libs/account-checks/docs/**/account-checks/**/*.rs : Document discriminator values in code comments to make account types discoverable and maintainable
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T17:59:54.233Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/PACKED_ACCOUNTS.md:0-0
Timestamp: 2025-11-24T17:59:54.233Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/**/*.rs : Provide descriptive names in ProgramPackedAccounts error messages (e.g., 'token_mint' instead of 'account')
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/create_*_account*.rs : Token account creation instructions (Create CToken Account and Create Associated CToken Account) require ACTIVE config validation only
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Derive CompressibleConfig PDA using seeds `[b"compressible_config", version.to_le_bytes()]` with version parameter to support multiple config versions
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/docs/ACCOUNTS.md : All account documentation must include: description, discriminator, state layout, serialization example, hashing (for compressed accounts only), derivation (for PDAs only), and associated instructions
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use Anchor serialization for CompressibleConfig account structures in Rust programs
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/create_token_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:55:32.059Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: sdk-tests/sdk-ctoken-test/README.md:0-0
Timestamp: 2025-11-24T17:55:32.059Z
Learning: Document compressible token account features and PDA pattern use cases in program documentation
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Use CompressibleConfig discriminator `[180, 4, 231, 26, 220, 144, 55, 168]` for account validation in Solana programs and clients
Applied to files:
programs/compressed-token/program/src/shared/create_pda_account.rsprograms/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/transfer2/**/*.rs : Transfer2 instruction must support Compress, Decompress, and CompressAndClose operations with multi-mint support and sum checks
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T17:59:03.485Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_INFO_TRAIT.md:0-0
Timestamp: 2025-11-24T17:59:03.485Z
Learning: Applies to program-libs/account-checks/docs/**/*.rs : Generic functions accepting AccountInfoTrait should use trait bounds in function signatures rather than concrete account types
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rsprograms/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/**/*.rs : Compressed token accounts (ctoken solana accounts) must use the same account layout as SPL tokens with a custom Compressible extension
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:02:15.670Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/registry/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:02:15.670Z
Learning: Applies to programs/registry/src/account_compression_cpi/*.rs : Create wrapper instruction module at `src/account_compression_cpi/new_operation.rs` with `NewOperationContext` struct defining required accounts
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/close_token_account.rs : Close Token Account instruction must return rent exemption to rent recipient if compressible, and return remaining lamports to destination account
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_close_lamports` function to determine lamport distribution when closing CToken accounts
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/{claim,transfer2}/**/*.rs : Rent authority can only compress accounts when is_compressible() returns true; lamport distribution on close is: rent → rent_sponsor, unutilized → destination
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:54.689Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/docs/instructions/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:54.689Z
Learning: Applies to programs/compressed-token/program/docs/instructions/instructions/CREATE_TOKEN_ACCOUNT.md : Create Token Account Instructions documentation must cover creation of regular and associated ctoken accounts
Applied to files:
programs/compressed-token/program/src/ctoken_transfer.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement rent constants with values: BASE_RENT = 1,220 lamports, RENT_PER_BYTE = 10 lamports, SLOTS_PER_EPOCH = 432,000.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Light Protocol rent is calculated per epoch as: 1220 minimum + (data_bytes * 10) lamports per epoch
Applied to files:
program-libs/compressible/src/rent/config.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `get_last_funded_epoch` function to determine the last epoch number covered by rent payments.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use rent curve algorithms (`rent_curve_per_epoch`) from RentConfig for calculating compressibility thresholds
Applied to files:
program-libs/compressible/src/rent/config.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/config.rs : Set CompressibleConfig default values for CToken V1: base_rent = 1220, compression_cost = 11000, lamports_per_byte_per_epoch = 10, and address_space[0] = `amt2kaJA14v3urZbZvnc5v2np8jqvc4Z8zDep5wbtzx`
Applied to files:
program-libs/compressible/src/rent/config.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `rent_curve_per_epoch` function with formula: base_rent + (num_bytes * lamports_per_byte_per_epoch).
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : RentConfig struct must use fixed-size fields: base_rent (u16, 2 bytes), compression_cost (u16, 2 bytes), lamports_per_byte_per_epoch (u8, 1 byte), and _place_holder_bytes ([u8; 3], 3 bytes padding) for proper 8-byte alignment
Applied to files:
program-libs/compressible/src/rent/config.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_inner` as a generic helper function with INCLUDE_CURRENT const parameter to calculate rent components, returning (required_epochs, rent_per_epoch, epochs_paid, unutilized_lamports).
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_close_lamports` function to return (u64, u64) tuple splitting lamports between rent recipient and user, with rent recipient receiving completed epochs and user receiving partial epoch remainder.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `get_rent` function to calculate total rent across multiple epochs using: rent_curve_per_epoch * epochs.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Rent is calculated per epoch (432,000 slots). Accounts must maintain sufficient balance for all epochs since last claim.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Use `rent_curve_per_epoch(base_rent, lamports_per_byte_per_epoch, num_bytes)` function for base rent calculations in all rent operations.
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : RentConfig struct must be exactly 8 bytes and contain: base_rent (u16), compression_cost (u16), lamports_per_byte_per_epoch (u8), and 3 bytes of padding.
Applied to files:
program-libs/compressible/src/rent/config.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Use epoch-based accounting (432,000 slots ≈ 2.5 days) instead of continuous time for Light Protocol rent collection
Applied to files:
program-libs/compressible/src/rent/config.rs
📚 Learning: 2025-11-24T17:58:50.237Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_CHECKS.md:0-0
Timestamp: 2025-11-24T17:58:50.237Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/checks.rs : Use generic `AccountInfoTrait` parameter for all account validation functions to enable compatibility with both Solana and Pinocchio runtimes
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:03.786Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:03.786Z
Learning: Applies to program-libs/account-checks/src/account_info/*.rs : Implement AccountInfoTrait for runtime-agnostic account handling with unified data access interface (`try_borrow_data`, `try_borrow_mut_data`)
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:03.786Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:03.786Z
Learning: Applies to program-libs/account-checks/src/account_info/*.rs : Provide PDA derivation functions (`find_program_address`, `create_program_address`) and permission checks in AccountInfoTrait
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/programs/**/*.rs : Use Anchor's `AccountDeserialize::try_deserialize` for CompressibleConfig when Anchor feature is enabled, which includes automatic discriminator validation
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Validate CompressibleConfig account ownership against Light Registry Program address (`Lighton6oQpVkeewmo2mcPTQQp7kYHr4fWpAgJyEmDX`) before processing
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T17:57:39.230Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/batched-merkle-tree/docs/QUEUE_ACCOUNT.md:0-0
Timestamp: 2025-11-24T17:57:39.230Z
Learning: Applies to program-libs/batched-merkle-tree/docs/src/queue.rs : Validate account ownership by Light account compression program using `check_owner` from `light-account-checks` when deserializing `BatchedQueueAccount` with `output_from_account_info`
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: CompressibleConfig module provides account configuration and rent management for the Light Registry program
Applied to files:
programs/compressed-token/program/src/create_token_account.rssdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:59:03.485Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_INFO_TRAIT.md:0-0
Timestamp: 2025-11-24T17:59:03.485Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/account_info/test_account_info.rs : Create a test-only AccountInfo mock implementation without external dependencies for unit testing AccountInfoTrait implementations
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T17:58:50.237Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/account-checks/docs/ACCOUNT_CHECKS.md:0-0
Timestamp: 2025-11-24T17:58:50.237Z
Learning: Applies to program-libs/account-checks/docs/program-libs/account-checks/src/checks.rs : Implement `check_account_info` function to validate account ownership by program_id and verify discriminator matches type T
Applied to files:
programs/compressed-token/program/src/create_token_account.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_rent_and_balance` function to determine if a CToken account is compressible
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:55:17.323Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: sdk-libs/macros/src/compressible/README.md:0-0
Timestamp: 2025-11-24T17:55:17.323Z
Learning: Applies to sdk-libs/macros/src/compressible/**/decompress_context.rs : Decompression trait implementation (`DecompressContext`) with account accessors, PDA/token separation logic, and token processing delegation should be in `decompress_context.rs`
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : CompressibleConfig struct must use `#[repr(C)]` for proper memory layout with fixed field ordering: version (u16, 2 bytes), state (u8, 1 byte), bump (u8, 1 byte), update_authority (Pubkey, 32 bytes), withdrawal_authority (Pubkey, 32 bytes), rent_sponsor (Pubkey, 32 bytes), compression_authority (Pubkey, 32 bytes), rent_sponsor_bump (u8, 1 byte), compression_authority_bump (u8, 1 byte), rent_config (RentConfig, 8 bytes), address_space ([Pubkey; 4], 128 bytes), and _place_holder ([u8; 32], 32 bytes) for total of 256 bytes
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `claimable_lamports` function to return None if account is compressible, otherwise return Some(amount) for completed epochs only (excluding current ongoing epoch).
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Light Protocol accounts must satisfy both Solana rent exemption and Light Protocol rent requirements, plus an 11,000 lamport compression incentive during creation
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : Define CompressibleConfig constant `LEN = 256` to represent the account size in bytes for rent calculation and account creation
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_and_balance` function to determine compressibility by checking if account balance covers required rent for epochs since last claim, returning (bool, u64) tuple.
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Implement account compressibility states in the following order: Funded (rent for current + 1 epoch) → Compressible (lacks rent for current + 1 epoch) → Claimable (funded but past epochs unclaimed)
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Accounts become compressible when they lack rent for the current epoch plus the next epoch (compressibility window).
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: When working with ctoken accounts having the compressible extension, you must read program-libs/compressible/docs/ documentation including RENT.md, CONFIG_ACCOUNT.md, and SOLANA_RENT.md for rent system understanding
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
⏰ Context from checks skipped due to timeout of 900000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)
- GitHub Check: Test batched-merkle-tree-simulate
🔇 Additional comments (5)
programs/compressed-token/program/src/ctoken_transfer.rs (1)
18-21: LGTM! Lifetime elision simplifies the API.Removing the explicit lifetime annotation is a good refactoring. The lifetime is still enforced via Rust's elision rules, so this maintains the same safety guarantees while simplifying the function signature.
programs/compressed-token/program/src/create_token_account.rs (1)
100-102: LGTM! Consistent lifetime elision refactoring.This follows the same pattern as the other API simplifications in this PR. The lifetime relationship between the input and output is preserved through elision rules.
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs (2)
54-68: LGTM! Consistent default value sourcing.The refactoring correctly derives default values from
CompressibleParams::default(), maintaining consistency across both parameter structs. The builder pattern preserves flexibility for customization.
24-25: Document the formula for lamports_per_write = 766 in code comments.The value 766 represents the top-up amount added on each write in maintenance mode. Based on the rent calculation in the codebase (BASE_RENT = 128, RENT_PER_BYTE = 1, SLOTS_PER_EPOCH = 13,500), this approximates 2 epochs of rent for a typical compressed token account (~260 bytes: 2 * (128 + 260) = 776 ≈ 766).
Add a comment at this default value explaining:
- The formula used to derive 766
- The account size it's calculated for
- Its purpose in the maintenance mode (ensures minimal rent buffer on each write)
This will prevent confusion about why this specific value was chosen and make it easier to adjust if rent constants change.
⛔ Skipped due to learnings
Learnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0 Timestamp: 2025-11-24T18:00:13.178Z Learning: Applies to program-libs/compressible/docs/**/config.rs : Set CompressibleConfig default values for CToken V1: base_rent = 1220, compression_cost = 11000, lamports_per_byte_per_epoch = 10, and address_space[0] = `amt2kaJA14v3urZbZvnc5v2np8jqvc4Z8zDep5wbtzx`Learnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/SOLANA_RENT.md:0-0 Timestamp: 2025-11-24T18:00:48.449Z Learning: Applies to program-libs/compressible/docs/**/*.rs : Light Protocol rent is calculated per epoch as: 1220 minimum + (data_bytes * 10) lamports per epochLearnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/RENT.md:0-0 Timestamp: 2025-11-24T18:00:36.663Z Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement rent constants with values: BASE_RENT = 1,220 lamports, RENT_PER_BYTE = 10 lamports, SLOTS_PER_EPOCH = 432,000.Learnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/RENT.md:0-0 Timestamp: 2025-11-24T18:00:36.663Z Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `rent_curve_per_epoch` function with formula: base_rent + (num_bytes * lamports_per_byte_per_epoch).Learnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/RENT.md:0-0 Timestamp: 2025-11-24T18:00:36.663Z Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_close_lamports` function to return (u64, u64) tuple splitting lamports between rent recipient and user, with rent recipient receiving completed epochs and user receiving partial epoch remainder.Learnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/CLAUDE.md:0-0 Timestamp: 2025-11-24T18:01:14.087Z Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_close_lamports` function to determine lamport distribution when closing CToken accountsLearnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/RENT.md:0-0 Timestamp: 2025-11-24T18:00:36.663Z Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement compression cost and incentive values as constants: COMPRESSION_COST = 10,000 lamports, COMPRESSION_INCENTIVE = 1,000 lamports.Learnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/CLAUDE.md:0-0 Timestamp: 2025-11-24T18:01:14.087Z Learning: Applies to program-libs/compressible/**/*.rs : Calculate claimable rent using `claimable_lamports` function before closing CToken accountsLearnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/RENT.md:0-0 Timestamp: 2025-11-24T18:00:36.663Z Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_and_balance` function to determine compressibility by checking if account balance covers required rent for epochs since last claim, returning (bool, u64) tuple.Learnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/CLAUDE.md:0-0 Timestamp: 2025-11-24T18:01:14.087Z Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_rent_and_balance` function to determine if a CToken account is compressibleLearnt from: CR Repo: Lightprotocol/light-protocol PR: 0 File: program-libs/compressible/docs/RENT.md:0-0 Timestamp: 2025-11-24T18:00:36.663Z Learning: Use `rent_curve_per_epoch(base_rent, lamports_per_byte_per_epoch, num_bytes)` function for base rent calculations in all rent operations.program-libs/compressible/src/rent/config.rs (1)
11-12: Update RENT.md documentation to reflect current rent configuration values.The code at lines 9-12 in
program-libs/compressible/src/rent/config.rsshows a recent refactor ("set better default compressible values") that lowered rent requirements and epoch duration, but the documentation inprogram-libs/compressible/docs/RENT.mdhas not been updated. The documented constants (BASE_RENT=1220, RENT_PER_BYTE=10, SLOTS_PER_EPOCH=432,000) are outdated and conflict with the current implementation (BASE_RENT=128, RENT_PER_BYTE=1, SLOTS_PER_EPOCH=13,500). Update the RENT.md and SOLANA_RENT.md documentation to reflect these current values to prevent confusion.Likely an incorrect or invalid review comment.
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sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs (1)
19-28: Add documentation explaining the defaults or verify they match intended rent prepayment duration.The default values (
pre_pay_num_epochs: 16andlamports_per_write: Some(766)) are undocumented. While the rent model itself is well-documented in RENT.md, there's no explanation for how these specific numbers were derived or what rent duration they represent.Consider adding a comment referencing the rent calculation docs and clarifying the intent (e.g., how many slots 16 epochs covers, what the 766 value covers relative to typical compression overhead).
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sdk-libs/**/*.rs
📄 CodeRabbit inference engine (CLAUDE.md)
Unit tests in sdk-libs must not depend on light-test-utils; any test requiring light-test-utils must be in sdk-tests
Files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
🧠 Learnings (24)
📓 Common learnings
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/config.rs : Set CompressibleConfig default values for CToken V1: base_rent = 1220, compression_cost = 11000, lamports_per_byte_per_epoch = 10, and address_space[0] = `amt2kaJA14v3urZbZvnc5v2np8jqvc4Z8zDep5wbtzx`
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_close_lamports` function to determine lamport distribution when closing CToken accounts
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement rent constants with values: BASE_RENT = 1,220 lamports, RENT_PER_BYTE = 10 lamports, SLOTS_PER_EPOCH = 432,000.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement compression cost and incentive values as constants: COMPRESSION_COST = 10,000 lamports, COMPRESSION_INCENTIVE = 1,000 lamports.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `claimable_lamports` function to return None if account is compressible, otherwise return Some(amount) for completed epochs only (excluding current ongoing epoch).
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_inner` as a generic helper function with INCLUDE_CURRENT const parameter to calculate rent components, returning (required_epochs, rent_per_epoch, epochs_paid, unutilized_lamports).
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `get_last_funded_epoch` function to determine the last epoch number covered by rent payments.
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use rent curve algorithms (`rent_curve_per_epoch`) from RentConfig for calculating compressibility thresholds
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_close_lamports` function to return (u64, u64) tuple splitting lamports between rent recipient and user, with rent recipient receiving completed epochs and user receiving partial epoch remainder.
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/config.rs : Set CompressibleConfig default values for CToken V1: base_rent = 1220, compression_cost = 11000, lamports_per_byte_per_epoch = 10, and address_space[0] = `amt2kaJA14v3urZbZvnc5v2np8jqvc4Z8zDep5wbtzx`
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_close_lamports` function to determine lamport distribution when closing CToken accounts
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use `calculate_rent_and_balance` function to determine if a CToken account is compressible
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:55:17.323Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: sdk-libs/macros/src/compressible/README.md:0-0
Timestamp: 2025-11-24T17:55:17.323Z
Learning: Applies to sdk-libs/macros/src/compressible/**/decompress_context.rs : Decompression trait implementation (`DecompressContext`) with account accessors, PDA/token separation logic, and token processing delegation should be in `decompress_context.rs`
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : CompressibleConfig struct must use `#[repr(C)]` for proper memory layout with fixed field ordering: version (u16, 2 bytes), state (u8, 1 byte), bump (u8, 1 byte), update_authority (Pubkey, 32 bytes), withdrawal_authority (Pubkey, 32 bytes), rent_sponsor (Pubkey, 32 bytes), compression_authority (Pubkey, 32 bytes), rent_sponsor_bump (u8, 1 byte), compression_authority_bump (u8, 1 byte), rent_config (RentConfig, 8 bytes), address_space ([Pubkey; 4], 128 bytes), and _place_holder ([u8; 32], 32 bytes) for total of 256 bytes
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use Anchor serialization for CompressibleConfig account structures in Rust programs
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Derive PDA addresses using `derive_pda` and `derive_v1_config_pda` functions for CToken account configuration
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Derive CompressibleConfig PDA using seeds `[b"compressible_config", version.to_le_bytes()]` with version parameter to support multiple config versions
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/{claim,transfer2}/**/*.rs : Rent authority can only compress accounts when is_compressible() returns true; lamport distribution on close is: rent → rent_sponsor, unutilized → destination
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement compression cost and incentive values as constants: COMPRESSION_COST = 10,000 lamports, COMPRESSION_INCENTIVE = 1,000 lamports.
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : RentConfig struct must use fixed-size fields: base_rent (u16, 2 bytes), compression_cost (u16, 2 bytes), lamports_per_byte_per_epoch (u8, 1 byte), and _place_holder_bytes ([u8; 3], 3 bytes padding) for proper 8-byte alignment
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Implement account compressibility states in the following order: Funded (rent for current + 1 epoch) → Compressible (lacks rent for current + 1 epoch) → Claimable (funded but past epochs unclaimed)
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `calculate_rent_and_balance` function to determine compressibility by checking if account balance covers required rent for epochs since last claim, returning (bool, u64) tuple.
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Calculate claimable rent using `claimable_lamports` function before closing CToken accounts
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:14.087Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:14.087Z
Learning: Applies to program-libs/compressible/**/*.rs : Use rent curve algorithms (`rent_curve_per_epoch`) from RentConfig for calculating compressibility thresholds
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:55:17.323Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: sdk-libs/macros/src/compressible/README.md:0-0
Timestamp: 2025-11-24T17:55:17.323Z
Learning: Applies to sdk-libs/macros/src/compressible/**/traits.rs : Core trait implementations (`HasCompressionInfo`, `CompressAs`, `Compressible`) should be defined in `traits.rs`
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T17:55:17.323Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: sdk-libs/macros/src/compressible/README.md:0-0
Timestamp: 2025-11-24T17:55:17.323Z
Learning: Applies to sdk-libs/macros/src/compressible/**/pack_unpack.rs : Pubkey compression logic and `PackedXxx` struct generation with Pack/Unpack trait implementations should be in `pack_unpack.rs`
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : Implement `claimable_lamports` function to return None if account is compressible, otherwise return Some(amount) for completed epochs only (excluding current ongoing epoch).
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:48.449Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/SOLANA_RENT.md:0-0
Timestamp: 2025-11-24T18:00:48.449Z
Learning: Applies to program-libs/compressible/docs/**/*.rs : Light Protocol accounts must satisfy both Solana rent exemption and Light Protocol rent requirements, plus an 11,000 lamport compression incentive during creation
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:13.178Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/CONFIG_ACCOUNT.md:0-0
Timestamp: 2025-11-24T18:00:13.178Z
Learning: Applies to program-libs/compressible/docs/program-libs/compressible/src/config.rs : Define CompressibleConfig constant `LEN = 256` to represent the account size in bytes for rent calculation and account creation
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Applies to program-libs/compressible/docs/**/*rent*.rs : RentConfig struct must be exactly 8 bytes and contain: base_rent (u16), compression_cost (u16), lamports_per_byte_per_epoch (u8), and 3 bytes of padding.
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:01:42.343Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: programs/compressed-token/program/CLAUDE.md:0-0
Timestamp: 2025-11-24T18:01:42.343Z
Learning: Applies to programs/compressed-token/program/src/close_token_account.rs : Close Token Account instruction must return rent exemption to rent recipient if compressible, and return remaining lamports to destination account
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
📚 Learning: 2025-11-24T18:00:36.663Z
Learnt from: CR
Repo: Lightprotocol/light-protocol PR: 0
File: program-libs/compressible/docs/RENT.md:0-0
Timestamp: 2025-11-24T18:00:36.663Z
Learning: Accounts become compressible when they lack rent for the current epoch plus the next epoch (compressibility window).
Applied to files:
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs
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🔇 Additional comments (1)
sdk-libs/compressed-token-sdk/src/ctoken/compressible.rs (1)
32-45: Builder-style constructor and docs look good.The zero‑arg
new()delegating toDefaultplus the doc comments aroundnew()andcompress_to_pubkey()make the builder pattern clear and address the earlier review note about guiding callers toward customization.No functional issues from my side here.
SwenSchaeferjohann
approved these changes
Dec 2, 2025
This was referenced Dec 5, 2025
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Refactor
Configuration Updates
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