修复(08-10-session-fallback-failure-classification): 定性并修复会话夹具回落

.trellis/tasks/08-10-session-fallback-failure-classification/implement.jsonl

@@ -0,0 +1 @@
+{"_example": "Fill with {\"file\": \"<path>\", \"reason\": \"<why>\"}. Put spec/research files only — no code paths. Run `python3 .trellis/scripts/get_context.py --mode packages` to list available specs. Delete this line once real entries are added."}