Review positive Open Rules fixtures that contain expected or candidate issues

[Y-Fukiya]

Summary

Several positive Open Rules fixtures contain official issues or produce
structural candidate issues in a downstream comparison. Because positive
fixtures are usually interpreted as clean examples, these cases are difficult to
use as oracle-backed conformance evidence without additional clarification.

The request is to confirm whether these positive fixtures should be corrected,
or whether they intentionally contain issues and should carry explanatory
metadata.

Observed cases

Rule	Case	Official issues	Candidate structural issues	Missing	Extra	Fingerprint
CORE-000014	positive/02	3	0	3	0	53fba3b163dbc15c
CORE-000143	positive/02	0	1	0	1	c205443c8aac7669
CORE-000172	positive/05	1	0	1	0	1dacf7ea9cc71476
CORE-000438	positive/01	1	0	1	0	d2743b58a0d519dc
CORE-000546	positive/01	6	0	6	0	0eab22ce05f6b2ee
CORE-000648	positive/01	0	2	0	2	d53b860e90366acf
CORE-000698	positive/01	0	4	0	4	ecb12e8d0d2f66e4
CORE-000704	positive/01	0	4	0	4	1b77302593f00a70
CORE-000718	positive/01	12	0	12	0	30738389cb726821

Review request

• Confirm whether these positive fixtures should contain any expected issues.
• If yes, clarify how downstream oracle harnesses should interpret
  positive-fixture issue rows.
• If no, update either the fixture data or the expected results.csv files.

Until reconciled, downstream harnesses should probably treat these as
oracle/fixture review backlog rather than engine mismatches or supported
matches.