feat: ic0 v1.1.0 and ic-cdk v0.20.1 with msg_caller_info_{data,signer} APIs

[lwshang]

Summary

• Add msg_caller_info_data_size/copy and msg_caller_info_signer_size/copy raw bindings to ic0 (sys.rs and lib.rs)
• Add msg_caller_info_data() -> Vec<u8> and msg_caller_info_signer() -> Option<Principal> higher-level bindings to ic_cdk::api
• Add e2e tests using PocketIC's update_call_with_sender_info

These APIs expose the caller identity attribute feature described in dfinity/portal#6202. msg_caller_info_data returns auxiliary data provided by the signing canister, and msg_caller_info_signer returns the canister ID of the canister that provided the caller's canister signature. Both return empty/None when the caller is not authenticated via canister signatures.

PocketIC setup improvements

The e2e test harness/CI now supports pinning pocket-ic to a git revision in addition to a tag, and the download step resolves the matching server binary for either form. This unblocked developing against an unreleased RC of PocketIC before cutting over to the tagged release.

Crate releases

• ic0 1.0.1 → 1.1.0
• ic-cdk 0.20.0 → 0.20.1 (and ic-cdk-macros bumped in lockstep)

Test plan

• E2e tests pass: call_msg_caller_info_data and call_msg_caller_info_signer verify correct values with and without sender_info

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR updates the ic0/ic-cdk crates to expose new “caller identity attribute” system APIs (msg_caller_info_*) and adds PocketIC-based e2e coverage for them, while also improving the PocketIC server download/pinning workflow (tag or git rev).

Changes:

• Add raw ic0 bindings for msg_caller_info_{data,signer}_{size,copy} and publish ic0 v1.1.0.
• Add higher-level ic_cdk::api::{msg_caller_info_data, msg_caller_info_signer} and publish ic-cdk/ic-cdk-macros v0.20.1.
• Enhance PocketIC setup (download script + test harness) and add e2e tests using update_call_with_sender_info.

Reviewed changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
scripts/download_pocket_ic_server.sh	Switches PocketIC server resolution to use cargo metadata and supports pinning by tag or git rev; adds OS/arch detection.
ic0/src/sys.rs	Adds new raw wasm imports + non-wasm stubs for msg_caller_info_*.
ic0/src/lib.rs	Adds safe slice-based wrappers for msg_caller_info_* size/copy APIs.
ic0/manual_safety_comments.txt	Documents safety notes for the newly-added ic0.msg_caller_info_* system APIs.
ic0/ic0.txt	Adds the new system API symbols to the ic0 API definition list.
ic0/Cargo.toml	Bumps ic0 crate version to 1.1.0.
ic0/CHANGELOG.md	Adds 1.1.0 changelog entry for the new bindings.
ic-cdk/src/api.rs	Adds high-level msg_caller_info_data() and msg_caller_info_signer() helpers.
ic-cdk/Cargo.toml	Bumps ic-cdk crate version to 0.20.1.
ic-cdk/CHANGELOG.md	Adds 0.20.1 changelog entry for new ic_cdk::api functions.
ic-cdk-timers/src/global_timer.rs	Refactors timer “skip” logic to avoid early returns inside match arms.
ic-cdk-macros/Cargo.toml	Bumps ic-cdk-macros crate version to 0.20.1 (lockstep).
e2e-tests/tests/test_utilities.rs	Updates PocketIC server cache validation to accept both tag and rev pins.
e2e-tests/tests/management_canister.rs	Extends PocketIC setup to include threshold-keys subnet for signing API tests.
e2e-tests/tests/api.rs	Adds e2e coverage for msg_caller_info_{data,signer} using PocketIC sender_info.
e2e-tests/src/bin/api.rs	Adds canister entrypoints used by the new e2e tests for caller info APIs.
Cargo.toml	Bumps workspace deps (ic0, ic-cdk, ic-cdk-macros) and updates PocketIC tag.

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