get ready for release

doc/todo.md

@@ -15,9 +15,6 @@ version-bump.
 - [ ] **Bash completion** — add a `profile.d/completion/` directory and write
   `_profile_upgrade`, `_taz`, `_utaz`, `_meteo`, etc. completions so that
   `<Tab>` works on all public functions. **[medium]**
-- [ ] **`shellcheck` clean pass** — run `shellcheck -x profile.sh profile.d/*.sh`
-  and address every remaining warning (currently a handful of SC2034 and SC2086
-  items). Integrate as a pre-commit hook. **[easy]**
 
 ---
 
@@ -70,10 +67,6 @@ version-bump.
   (configurable via `MYEXTIP_FALLBACK_URL`) when the primary times out.
   **[easy]**
 
-### packages
-- [ ] **Additional backends** — add support for `pacman` (Arch), `apk` (Alpine),
-  `xbps-query` (Void), and `brew` (macOS). **[medium]**
-
 ### processes
 - [ ] **`ku` dry-run flag** — add `-n` / `--dry-run` to print what would be
   killed without acting. **[easy]**