Default legacy Qwen launches to 1.7B

[joshuabrosenthal]

Summary

• Align the retained installer/launcher fallback for missing Qwen model-size settings with the manager catalogue default of 1.7b.
• Preserve explicit 0.6b selections and continued support for the official 0.6B Base model.
• Add regression coverage across installer architecture, launcher behavior, and guided setup.

Root cause

The legacy installer and launcher paths had independent 0.6b fallbacks when kobold_qwen_model_size was absent, while the current manager catalogue defaults to 1.7b. A missing legacy key could therefore silently launch the 0.6B model even when the current UI and manager expected 1.7B.

Impact

Missing legacy model-size values now resolve to 1.7B consistently. Existing explicit 0.6B configurations remain unchanged.

Validation

• ..\bin\pixi.exe run -e installer-build python -m unittest tests.test_installer_architecture tests.test_installer_launcher_chatterbox tests.test_manager_guided_setup
  • Ran 104 tests ... OK (skipped=1)
• ..\bin\pixi.exe run -e installer-build python -m py_compile for all 10 changed Python files
• git diff --check
• Manual verification that the launcher starts Qwen3-TTS-12Hz-1.7B-Base-f16.gguf and successfully completes a voice-cloning request through the local API.

No user data, credentials, local paths, voice names, or private identifiers are included in the patch.

[joshuabrosenthal]

The two Web migration preview jobs fail during test collection because dbus_next is not installed in that workflow environment. The Pandrator Manager test and package workflows pass on Ubuntu and Windows, and the failure appears unrelated to this installer-only change.

[lukaszliniewicz]

Thank you — this was a real consistency gap. I've incorporated the fix into main for 0.8.0, kept explicit 0.6B selections intact, centralized the implicit 1.7B fallback, and carried over the regression coverage. I also fixed the unrelated missing Manager dependency in the preview workflow. Really appreciate the careful report and validation!