## Summary
- Trims whitespace from API keys and secrets during both encryption and
decryption in `src/main/settings.ts`
- Prevents issues caused by accidental leading/trailing whitespace or
newlines in API keys (e.g., from copy-paste)
- Adds comprehensive tests for the `encrypt`, `decrypt`, and
`readSettings` whitespace trimming behavior

## Test plan
- [x] Unit tests added for `encrypt()` trimming whitespace before
encrypting
- [x] Unit tests added for `decrypt()` trimming whitespace from both
plaintext and electron-safe-storage secrets
- [x] Unit tests added for `readSettings()` trimming whitespace from
decrypted API keys
- [x] All 784 existing tests pass

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Trim whitespace from API keys and secrets during encryption, decryption,
and settings reads to prevent auth failures from copy‑pasted spaces or
newlines. Ensures consistent storage and use of secrets across
providers.

- **Bug Fixes**
  - encrypt(): trims input before encrypting or storing plaintext
- decrypt(): trims decrypted strings for both electron-safe-storage and
plaintext
- readSettings(): trims whitespace from decrypted and plaintext secrets
- Added unit tests for encrypt, decrypt, and readSettings trimming
behavior

<sup>Written for commit d24002f59f18428d78ce55d11e82d4800425d3eb.
Summary will update on new commits.</sup>

<!-- End of auto-generated description by cubic. -->
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>