fix: extract message from WASM SDK error objects in toError()

[thephez]

When the Dash SDK throws an error from a WASM-based operation, it throws a plain object with a message property rather than a standard JS Error instance. The toError() utility was falling through to String(value) for these, producing the unhelpful [object Object] shown in the UI error panel.

This fix adds a check for objects with a message property before the string fallback, so WASM SDK errors now display their actual human-readable message. The change covers all error paths in the app since every catch block routes through toError().

Changes

• Updated toError() in src/ui/state.ts to extract message from non-Error objects before falling back to String(value)
• Fixes ERR-1008 ("Send to address failed") and all other error codes that surface WASM SDK errors

Summary by CodeRabbit

• Bug Fixes
  • Improved error message handling when exceptions are thrown as objects. The system now extracts human-readable messages from object-shaped errors while preserving existing Error instances, resulting in clearer error reporting.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: ffad9eb7-e55d-49fb-92e3-0a0f27f684c9

📥 Commits

Reviewing files that changed from the base of the PR and between 8096cc6 and 84dd9b6.

📒 Files selected for processing (1)

• src/ui/state.ts

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📝 Walkthrough

Walkthrough

The toError function in src/ui/state.ts now extracts human-readable message fields from non-Error objects before converting them to strings, improving error message handling for object-shaped errors while preserving existing Error instances.

Changes

Cohort / File(s)	Summary
Error Message Extraction src/ui/state.ts	Enhanced toError function to check for and extract message property from non-Error objects, providing better error messaging for object-shaped exceptions while maintaining backward compatibility with stringified fallback.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A tiny function, quick and neat,
Extracts the message, makes errors sweet,
From objects tangled, messages freed,
Now errors speak just what we need! 🎉

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: extracting messages from WASM SDK error objects in the toError() function, matching the primary focus of the changeset.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[thephez]

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