Removes the retired v0868-stopship fleet roster, the v0867 setup QA script,
and the three v0867 constitution evidence docs, none of which anything on
the train references anymore (rg-verified; the only inbound link was
docs/CONFIGURATION.md, updated here). Trims the dead v0868-stopship alias
from the stopship role-validation guard in crates/cli/src/lib.rs, drops the
retired /slop and /canzha aliases from the command-dispatch architecture
doc, and removes the deleted crates/tui/src/slop_ledger.rs path from
source-structure-budget.json. The v0868_ name-guard regression test stays
by design.
Verified: cargo fmt clean, cargo test -p codewhale-cli --lib (204 passed),
source-structure-budget.json still valid JSON.
Hmbown
e03259a368