feat: add inline Stellar address validation on destination fields

[MJ-RWA]

Summary by CodeRabbit

• Bug Fixes
  • Improved destination address validation.
  • Added an inline error for addresses that are invalid or incorrectly formatted.
  • Disabled sending until a valid address is entered.
    Closes: Add inline address validation on destination fields #6

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Project	Deployment	Actions	Updated (UTC)
stellarflow	Ready	Preview	Aug 5, 2026 2:29am

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📝 Walkthrough

Walkthrough

SendPage validates destination addresses for a leading G and exactly 56 characters. It displays an inline error for invalid input and disables sending while the error exists.

Changes

Destination Address Validation

Layer / File(s)	Summary
Validate destination addresses and gate sending apps/src/pages/SendPage.tsx	SendPage tracks destination-address errors, validates each input value, displays an inline error, and disables sending when the address is invalid.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related issues

• Stellarflow issue 3 — Both changes update destination-address input handling in SendPage.tsx; this pull request adds the validation and error-state behavior.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title describes a clipboard paste button, but the changes validate destination addresses and disable sending for invalid addresses.	Update the title to describe destination-address validation and the invalid-address send restriction.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/address-validation

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@apps/src/pages/SendPage.tsx`:
- Around line 125-128: Replace the shape-only destination validation in SendPage
with StrKey.isValidEd25519PublicKey, importing StrKey from `@stellar/stellar-sdk`
and applying the same validation to scheduled payment creation. Preserve the
existing destError behavior for invalid and valid addresses, and add coverage
for a 56-character G address with an invalid checksum.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 4bfb9411-14c6-4f05-8a32-46211cd487ec

📥 Commits

Reviewing files that changed from the base of the PR and between 0fa66aa and c48bc83.

📒 Files selected for processing (1)

• apps/src/pages/SendPage.tsx