Align sandbox defaults with the cchost configuration schema

[Copilot]

The sandbox inherited test-optimized defaults from the e2e infrastructure, causing its generated configuration and CLI help to diverge from documented cchost defaults—for example, a 100ms rather than 1000ms signature delay.

• Schema-backed defaults
  • Map CLI arguments to host configuration schema paths.
  • Derive defaults and descriptions from the schema, including unit conversion.

CLI_ARGUMENT_CONFIG_PATHS = {
    "sig_ms_interval": "ledger_signatures.delay",
    "snapshot_tx_interval": "snapshots.tx_count",
}

• Sandbox behavior

  • Make sandbox.sh opt into schema defaults while preserving faster e2e defaults.
  • Remove wrapper-specific node configuration overrides.
  • Preserve explicit command-line values as the highest precedence.

• Distribution and documentation

  • Install the host schema alongside the sandbox infrastructure.
  • Document the sandbox/e2e default distinction.

• Fixes Clarify default configuration options for the sandbox #4273

[Copilot]

Pull request overview

Aligns sandbox configuration defaults and CLI help with the cchost schema while retaining optimized e2e defaults.

Changes:

• Adds schema-backed default resolution and unit conversion.
• Enables schema defaults for sandbox.sh.
• Adds documentation, installation support, and regression tests.

Custom instructions used

• .github/copilot-instructions.md
• .github/instructions/changelog.instructions.md

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/start_network.py	Adds the schema-default opt-in flag.
tests/sandbox/sandbox.sh	Enables schema defaults and removes overrides.
tests/infra/e2e_args.py	Resolves defaults and descriptions from the schema.
tests/e2e_args_test.py	Tests defaults, precedence, and diagnostics.
doc/build_apps/run_app.rst	Documents sandbox default behavior.
CMakeLists.txt	Installs the schema and registers tests.
CHANGELOG.md	Records the user-facing change.

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[Amaury Chamayou (achamayou)]

Copilot resolve the merge conflicts in this pull request

[Copilot]

Copilot resolve the merge conflicts in this pull request

Resolved the merge conflict with origin/main and pushed merge commit a808eaf53.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.