classifyOutsideReview() returns separate execution, findings and verdict
fields from text, stderr and exit status; reason codes, anchors and fix
actions live in lib/gate-outcomes.ts. validateOutsideReview() stays as the
text-only wrapper and the two-argument CLI keeps exit 0/1/2 for importers
and installed skills that predate a re-render. The --verdict form (implied
by --stderr/--exit) prints VERDICT/FINDINGS/REASON and exits 0/3/4/1; the
generated outside-voice caller moves to it and branches on each status
(unverified prints OUTSIDE_STATUS: unverified, never completed).
Adds docs/troubleshooting.md with one anchored section per reason code, the
anchor test, and the gate-tail lint (query scripts may not swallow failures,
gate calls may not end in || true, other best-effort tails say why).