chore: release v1.12.1

fix(ci): force non-interactive windows signer password arg

fix(ci): replace sed version bumps in release workflow

ci: defer release publish until builds succeed

fix(ci): harden windows signer password handling

chore: reset project version to v1.12.0

chore: sync src-tauri lockfile version to v1.12.2

fix(ci): correct windows signer argument quoting

chore: release v1.12.2

fix(ci): pass explicit empty signer password

chore: release v1.12.1

fix(ci): handle empty tauri signing password

chore: sync src-tauri lockfile version

test: update provider model fixtures for openai and gemini

refactor(ui): remove anthropic provider from AI settings