Enable teleport of native token to Assethub

[ebma]

Adds a new pallet xcm-teleport which is used for teleporting native tokens to AssetHub. This extra pallet is necessary because Pendulum's polkadot-sdk dependencies are so old that they don't have access to 'transfer_assets_using_type_and_then'. Using polkadotXcm.send() is not viable either because it adds an instruction that messes up the processing on Assethub. More context can be found in this file.

Xcm Teleport Investigation.md

[Copilot]

Pull request overview

This PR introduces a dedicated pallet-xcm-teleport to teleport Pendulum’s native token (PEN) to AssetHub using a manually constructed XCM program whose instruction ordering is compatible with AssetHub’s barrier rules, and wires it into the Pendulum runtime/XCM configuration.

Changes:

• Added new pallet-xcm-teleport with an extrinsic that burns PEN locally and sends an ordered XCM sequence to AssetHub (Withdraw DOT → BuyExecution → ReceiveTeleportedAsset(PEN) → deposits).
• Updated Pendulum runtime wiring (runtime config + construct_runtime!) and dependencies to include the new pallet.
• Tightened XCM teleport controls in Pendulum via destination/asset filters and transactor interception.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
runtime/pendulum/src/xcm_config.rs	Adds AssetHub/native asset locations, enables limited teleporter trust, and restricts teleport destinations/assets.
runtime/pendulum/src/lib.rs	Registers the new pallet in the runtime and allows its calls via BaseFilter.
runtime/pendulum/Cargo.toml	Adds the new pallet dependency and enables it under std / benchmarks / try-runtime features.
runtime/common/src/custom_transactor.rs	Extends the custom transactor wrapper to validate teleport checkout destinations.
runtime/common/Cargo.toml	Adds log dependency needed by new logging in custom_transactor.
pallets/xcm-teleport/src/lib.rs	New pallet implementing the custom XCM teleport extrinsic and message construction.
pallets/xcm-teleport/Cargo.toml	New crate manifest for the teleport pallet.
Cargo.toml	Adds the new pallet to workspace members.
Cargo.lock	Locks the newly added crate and dependency graph updates.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[ebma]

@copilot please address the unresolved comments of this thread in a new PR.

[Copilot]

@ebma I've opened a new pull request, #554, to work on those changes. Once the pull request is ready, I'll request review from you.