Card: adapter serving is on main of firelex/jeff; note on the recorded training commit

Add LICENSE: Apache License 2.0 of Qwen3.5-0.8B (Copyright 2026 Alibaba Cloud)

Card: Qwen3.5-0.8B licence notice for the v1.3 release

Card: name the test set in test.jsonl

Jeff v1.3: jeff-adapter-nav

initial commit