feat: add compass service for offchain config resolution

[PierreJeanjacquot]

iExec Compass service fallbacks ENS-based configuration for chains that don't support ENS
The service is notably used to get workerpools API URL

• added experimental compassURL in IExecModule constructor options and compass in chain.json
• added compass default URL for arbitrum-sepolia
• added experimental resolveCompassURL() method to IExecModule
• added workerpool API URL resolution against compass when compass URL is provided

[github-actions]

🐳 Hadolint Dockerfile Lint Results

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Dockerfile:18 DL3059 info: Multiple consecutive `RUN` instructions. Consider consolidation.
Dockerfile:19 DL3016 warning: Pin versions in npm. Instead of `npm install <package>` use `npm install <package>@<version>`
Dockerfile:19 DL3059 info: Multiple consecutive `RUN` instructions. Consider consolidation.

[Copilot]

Pull Request Overview

This PR adds the iExec Compass service as a fallback for legacy ENS-based configuration resolution on chains that don't support ENS. The service is primarily used to get workerpool API URLs.

• Adds experimental compassURL configuration option and resolveCompassURL() method to IExecModule
• Updates workerpool API URL resolution to use Compass when available, falling back to ENS
• Adds Compass API error handling with new CompassCallError class

Reviewed Changes

Copilot reviewed 15 out of 17 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/lib/IExecConfig.js	Adds compassURL configuration option and resolveCompassURL method
src/common/execution/debug.js	Updates workerpool API URL resolution to use Compass before ENS fallback
src/lib/IExecWorkerpoolModule.js	Passes compass URL to getWorkerpoolApiUrl function
src/lib/IExecTaskModule.js	Updates task-related functions to use compass URL
src/common/utils/config.js	Adds compass configuration for arbitrum-sepolia-testnet
src/common/utils/errors.js	Adds CompassCallError class for compass API error handling
test/lib/e2e/IExecWorkerpoolModule.test.js	Adds test for compass-based workerpool URL resolution
src/cli/cmd/iexec-workerpool.js	Updates CLI commands to pass compass URL
src/cli/cmd/iexec-task.js	Updates CLI task commands to use compass URL
src/cli/utils/fs.js	Adds compass field to chain configuration schema
docs/*	Updates documentation for new compass functionality

[abbesBenayache]

could we add tests for resolveCompassURL()? to handle the case when Compass is unavailable also with different chain IDs should be considered

[PierreJeanjacquot]

could we add tests for resolveCompassURL()? to handle the case when Compass is unavailable also with different chain IDs should be considered

added service unavailable tests

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
90.0% Coverage on New Code
0.0% Duplication on New Code

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