815b559ea6
The reference-issue mechanic told the orchestrator to record a fork's
chosen option, rationale, and (for a user decision) "the provenance",
and to use the thread as cross-run memory -- but said nothing about
reachability. So decision-log comments were the main source of
tracker-unreachable references: chat pointers ("decided in-context")
and weak intra-thread pointers ("logged above").
Make the decision log defer to issue rule 4 (the reachability test) in
all three of boss's rule surfaces: the "The reference issue" mechanic
(quote a user decision's provenance inline; reproduce each fork's
options and rationale inline, no bare "Approach B" label; link a sibling
comment by its full URL, never "above"), one Common-Rationalisations
row, and one Red-Flags bullet. The "Skill-system feedback" provenance
block already wrote provenance inline -- it is named as the form to
follow.