fix: instant seal

[Daanvdplas]

Fixes instant seal for the parachain.
Mimics runtime config for assets of paseo asset hub, this way devs have to write e2e tests that also work on paseo asset hub.

[Copilot]

Pull Request Overview

This PR migrates the project from Rococo to Paseo testnet, adds instant seal dev mode support for parachain development, and pins the Rust toolchain version. The migration standardizes currency constants and deposit calculations to match Paseo Asset Hub specifications.

Key changes:

• Switches relay chain from "rococo-local" to "paseo-local" in zombienet configuration
• Updates currency constants (UNITS, EXISTENTIAL_DEPOSIT) to match Paseo Asset Hub standards
• Implements instant seal dev mode for standalone parachain development without relay chain

Reviewed Changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
zombienet.toml	Updates relay chain from rococo-local to paseo-local
rust-toolchain.toml	Pins Rust toolchain to version 1.90.0 with rustfmt and clippy
runtime/src/lib.rs	Updates currency constants to match Paseo Asset Hub specifications
runtime/src/assets_config.rs	Implements Paseo-compatible deposit calculations and removes ConstU128 usage
parachain-runtime/src/lib.rs	Updates currency constants and corrects comment references to MILLICENT
parachain-runtime/src/assets_config.rs	Implements Paseo-compatible deposit calculations (identical to runtime version)
node/src/service.rs	Adds new dev mode functionality with instant seal consensus
node/src/command.rs	Integrates instant seal mode into command handling
node/src/cli.rs	Adds --instant-seal CLI flag with helper method
node/Cargo.toml	Adds cumulus-client-parachain-inherent dependency
Cargo.toml	Adds cumulus-client-parachain-inherent and futures-timer dependencies
Cargo.lock	Updates lock file with new dependency

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[al3mart]

👌 I mainly reviewed the changes for instant seal. Great work. Thanks for getting that to work!!

[cmichi]

Thanks a lot, Daan!

I tested it too. The one thing that's a bit unfortunate, but it's an implication of manual seal, is that we don't have a relaychain, so can't test contracts that require one for XCM. But I've got something in mind for that. This is already really helpful!