put route hints in email

[JssDWt]

Make it a little faster to diagnose issues by logging the route hints in sent emails

[Copilot]

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (4)

src/htlc_manager.rs:655

• Ensure that the return type of 'route_hints()' matches the expected 'Vec' type for the notification request.

+                    hints: trampoline.invoice.route_hints(),

src/email.rs:30

• [nitpick] The label 'Route hint' might be ambiguous; consider clarifying the output label or adding contextual information to improve readability in diagnostic emails.

format!("<tr><td>Route hint {}: {}, {}</td></tr>", i, hint.src_node_id, scid_to_string(hint.short_channel_id),)

src/email.rs:46

• Consider adding tests to cover cases where no route hints are provided, ensuring the email HTML renders correctly without hints.

hints.join("")

src/email.rs:62

• Double-check that the bitwise operations correctly extract all components of the SCID as expected for all supported formats.

format!("{}x{}x{}", scid >> 40, (scid >> 16) & 0xFFFFFF, scid & 0xFFFF)