Problem: When files are deleted via canola, any open Neovim buffers
for those files remain alive, polluting the jumplist with stale
entries.
Solution: Add an opt-in `cleanup_buffers_on_delete` config option
(default `false`). When enabled, `finish()` in `mutator/init.lua`
iterates completed delete actions and wipes matching buffers via
`nvim_buf_delete` before `CanolaActionsPost` fires. Only local
filesystem deletes are handled (guarded by the `files` adapter
check).
* fix: restore `buflisted` on jumplist buffer re-entry
Problem: Neovim's jumplist machinery re-enters canola buffers via an
internal `:edit`-equivalent path, which unconditionally sets
`buflisted = true`. The existing workaround in `open()` and
`open_float()` only covers canola-initiated navigation, leaving
`<C-o>` and `<C-i>` unhandled.
Solution: Apply the same `buf_options.buflisted` guard in the
`BufEnter` autocmd, directly after `set_win_options()`. This fires
on every buffer entry — including all jumplist paths — and mirrors
the pattern already used at the two `:edit` callsites.
* docs: mark upstream #302 as fixed in tracker
Problem: the full upstream PR and issue triage was removed from the
README during the repository modernization, leaving no user-facing
record of what the fork addresses.
Solution: restore the triage tables in a dedicated doc/upstream.md and
link to it from the top of the README. Keeps the README clean while
giving the full picture a permanent home.
