- Add Helium browser as an AppImage and include it in system packages.
- Rename fluxer package into the appimages module and update imports.
- Add `SUPER+H` keybinding to launch Helium and `SUPER+CONTROL+T` for
tsukimi.
- Change web‑app desktop entries to use Helium instead of Chromium.
- Disable ungoogled‑chromium and ChatGPT modules on the laptop host.
- Fix a minor typo in a comment within hardware.nix.
Uncomment development package imports and include the `opencode` tool in
both system and Zed packages. Update librewolf’s search URL template and
refresh locked revisions, hashes, and timestamps in the flake.lock.