feat(icrc1): add ICRC-154 pause/unpause/deactivate ledger endpoints

[bogwar]

Summary

• Add ICRC-154 Candid arg/error types (PauseArgs, UnpauseArgs, DeactivateArgs and corresponding error enums) in icrc-ledger-types
• Add paused/deactivated persistent state to the Ledger struct with accessor/setter methods
• Add 3 update endpoints (icrc154_pause, icrc154_unpause, icrc154_deactivate) that create ICRC-124 blocks and update ledger state, authorized via is_controller()
• Add 2 query endpoints (icrc154_is_paused, icrc154_is_deactivated) for state inspection
• Add pause guard to icrc1_transfer, icrc2_approve, and icrc2_transfer_from that returns GenericError when the ledger is paused or deactivated
• Register ICRC-154 in supported standards and 124pause/124unpause/124deactivate in supported block types
• Update .did file with new types and service methods
• Update state machine test assertions for new standards and block types

Stacked on #9488 (PR 3: Rosetta support)

Test plan

• cargo clippy passes for icrc-ledger-types and ic-icrc1-ledger
• Candid interface compatibility test passes (check_candid_interface)
• ledger_unit_test passes
• ledger_canister_test passes
• ledger_test and ledger_test_u256 pass (including updated supported standards/block types assertions)
• upgrade_downgrade and upgrade_downgrade_u256 pass (serde defaults ensure backward compatibility)
• icrc1_unit_test passes
• icrc-ledger-types tests pass

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Adds ICRC-154 pause/unpause/deactivate management endpoints to the ICRC-1 ledger canister, including persisted paused/deactivated state and corresponding type/interface updates, and updates state-machine assertions for supported standards and block types.

Changes:

• Introduces icrc154_pause, icrc154_unpause, icrc154_deactivate update calls (controller-only) plus icrc154_is_paused / icrc154_is_deactivated query calls, and records these actions as ICRC-124 block types.
• Persists paused and deactivated flags in Ledger state and gates icrc1_transfer, icrc2_approve, and icrc2_transfer_from when paused/deactivated.
• Extends icrc-ledger-types with ICRC-154 Candid args/errors and updates the .did interface + SM tests for new supported standard and block types.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
rs/ledger_suite/tests/sm-tests/src/lib.rs	Updates expected supported standards and ICRC-3 supported block types to include ICRC-154 / 124pause/124unpause/124deactivate.
rs/ledger_suite/icrc1/ledger/src/main.rs	Adds pause/deactivate guard to transfers/approvals, registers ICRC-154 + block types, and implements new ICRC-154 endpoints.
rs/ledger_suite/icrc1/ledger/src/lib.rs	Adds persisted paused/deactivated flags with accessors/mutators and initializes defaults for upgrade compatibility.
rs/ledger_suite/icrc1/ledger/ledger.did	Adds ICRC-154 types and service methods to the public Candid interface.
packages/icrc-ledger-types/src/lib.rs	Exposes a new icrc154 module.
packages/icrc-ledger-types/src/icrc154/mod.rs	Defines ICRC-154 args and error enums for Candid/serde.

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