Payment

[wokedi]

closes #86
successfully implemented the Stellar path payment feature integrated with the stealth send flow.

closes #79

Successfully implemented and pushed Stellar memo helpers to the payment branch

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[truthixify]

Clean merge. Memo helpers + path-payment builder in one PR, with substantial test coverage (338 + 287 lines) and complete documentation for both. Thanks @wokedi.

Closes #79 and #86.

[truthixify]

Sorry @wokedi — my fault on the close-then-fail. Reopened #79 and #86.

The memo + path-payment work itself is great. After #93 (audit) landed, src/chains/stellar/index.ts got new exports (fetchAnnouncementsStream, parseAnnouncementEvent) that conflict with this branch's older version. Quick rebase clears it:

git fetch origin
git rebase origin/develop
# in src/chains/stellar/index.ts: keep develop's expanded announcement exports, then re-add your memo/path-payment exports
git push --force-with-lease

After rebase I will merge.