Typos in `--network` were treated as custom RPC/WebSocket URLs instead of validation errors

[andriypolanski]

Description (original issue)

In resolve_network, if --network was set but not one of the known keys (finney, test, local), the value was returned as the WebSocket endpoint with network name custom. A typo such as finny instead of finney became the literal connection string finny, causing confusing failures instead of a clear error.

Miner commands used NETWORK_MAP.get(network.lower(), network), so unknown names were forwarded as-is from --network.

Steps to reproduce (historical)

Issue commands: Many commands use Click.Choice for --network, so invalid names were already rejected at parse time. Programmatic calls to resolve_network('finny', None) still hit the old pass-through.

Miner (user-visible):

1. gitt miner check --network finny (typo) with other options set.
2. Previously the client attempted to use finny as an endpoint.

Expected behavior

Unknown network strings that are not built-in names must either be rejected with a clear message listing valid names, or be accepted only when they look like real endpoint URLs (ws://, wss://, http://, https://). --rpc-url continues to accept arbitrary URLs as the explicit override.

Actual behavior before fix

Unknown network was returned as the endpoint string with no validation.

Resolution

• Added looks_like_chain_endpoint() in gittensor/utils/network.py (keeps constants.py free of non-constant logic).
• resolve_network in gittensor/cli/issue_commands/helpers.py: after map lookup, unknown values must pass looks_like_chain_endpoint(stripped) or raise click.ClickException with finney, local, test, and a hint to pass a full URL.
• _resolve_endpoint in gittensor/cli/miner_commands/helpers.py: same rules for miner --network.
• Tests in tests/cli/test_cli_helpers.py (TestResolveNetwork, TestMinerResolveEndpoint).

Files changed

• gittensor/utils/network.py (new)
• gittensor/cli/issue_commands/helpers.py
• gittensor/cli/miner_commands/helpers.py
• tests/cli/test_cli_helpers.py

Environment

• Gittensor CLI, Python 3.x, any OS