fix(wallet,deploy): default sequencer URL from scaffold localnet port

[crazywriter1]

Problem

When wallet_config.json omits sequencer_addr, wallet topup and deploy still defaulted to http://127.0.0.1:3040. That ignores [localnet] port in scaffold.toml, so a non-default localnet port and an unset wallet address pointed RPC at the wrong URL.

Solution

• Add default_sequencer_http_url_for_project in wallet_support to build http://127.0.0.1:{project.config.localnet.port} (same default as localnet when [localnet] is omitted).
• Use it as the fallback when sequencer_addr is missing in both deploy and wallet topup.
• Follow-up to fix(config): fail fast on invalid [localnet] port in scaffold.toml #83: once [localnet] port is authoritative, default sequencer_addr for deploy / wallet topup should use the same port instead of hardcoding 3040.

Tests

• New integration test: wallet_topup_dry_run_planned_network_uses_localnet_port_without_wallet_sequencer_addr asserts dry-run output shows the URL with the configured port when the wallet omits sequencer_addr.
• Comment on deploy fallback test updated to describe localnet.port-based fallback.

How to verify

cargo test wallet_topup_dry_run_planned_network
cargo test

[vpavlin]

Clean extraction of a shared fallback URL helper. Replaces two hardcoded http://127.0.0.1:3040 literals with default_sequencer_http_url_for_project(), which reads from project.config.localnet.port — consistent with how localnet.rs already resolves the port.

Changes verified:

• wallet topup now falls back to the configured localnet port when sequencer_addr is missing in wallet config ✅
• `deploy} uses the same fallback logic ✅
• New integration test `wallet_topup_dry_run_planned_network_uses_localnet_port_without_wallet_sequencer_addr} passes ✅
• All 76 CLI tests pass, formatting clean ✅

One minor suggestion: the deploy-side fallback isn't covered by a new test (only the wallet topup path is tested). Consider adding a similar dry-run assertion for `deploy} to close the coverage gap. Not blocking.

Approve.

[crazywriter1]

Thanks for the review and approve.

I’ve added an integration test deploy_preflight_targets_localnet_port_when_wallet_omits_sequencer_addr so the deploy path is covered as well: wallet omits sequencer_addr, scaffold.toml sets a non-default [localnet] port, and we assert the preflight error on stderr includes http://127.0.0.1:{port} together with the existing reachability messaging. Pushed in the latest commit. @vpavlin

[danisharora099]

LGTM. feel free to resolve merge conflcits and merge

[weboko]

@crazywriter1 can you, please, resolve conflict so that we merge?

[crazywriter1]

@crazywriter1 can you, please, resolve conflict so that we merge?

Hey, I’ll take a look and resolve the conflicts in a few hours. Thanks.

[crazywriter1]

Conflicts resolved on latest master, and deploy-side fallback coverage has been added (deploy_preflight_targets_localnet_port_when_wallet_omits_sequencer_addr). Full cargo test passes. @weboko