Update failed: Signature verification error (v1.10.0 to v1.11.0)

[AlexMikhalev]

Description

Running terraphim-agent update fails with signature verification error when attempting to update from v1.10.0 to v1.11.0.

Steps to Reproduce

1. Run terraphim-agent check-update - shows update available: 1.5.0 → 1.11.0
2. Run terraphim-agent update
3. Update downloads successfully but fails at signature verification

Error Output

Signature verification failed: could not find read signatures in .tar.gz file
Signature verification failed: Signature verification failed: could not find read signatures in .tar.gz file
Update with verification failed: Signature verification failed: Signature verification failed: could not find read signatures in .tar.gz file
[ERROR] Update failed: Signature verification failed: Signature verification failed: could not find read signatures in .tar.gz file

Version

• terraphim-agent 1.10.0
• Trying to update to 1.11.0

Expected Behavior

Either:

1. Update should succeed with valid signature, OR
2. Update should offer to skip verification with a flag like --no-verify

Additional Context

• Running on Linux (pop-os)
• Installed via bun global

[AlexMikhalev]

Fixed in commit 4377945. Downgraded missing signature from error to warning so self-update proceeds even when archives are unsigned. Signature verification is still performed when signatures exist, but missing signatures no longer block the update.