roadmap: remove stale init-local/init-docker alias todo

The `init-local` and `init-docker` alias commands do not exist in the
codebase; `osh init --target <name>` is the supported interface, so drop
the completed item from the roadmap.

Assisted-by: Devin with SWE-1.7 Medium

Author: dreispt

ROADMAP.md

@@ -12,4 +12,3 @@ This document tracks planned improvements and future development work for the Os
 - Extend `osh/commons.py` with a standard subprocess helper for capture/error handling and replace ad-hoc `subprocess` calls in `osh/sources.py`, `osh/backup_sources.py`, and plugins.
 - Refactor `osh/plugins/osh_docker/backends.py` `diagnose()` into section-specific methods (currently ~140 lines).
 - Extract `osh/sources.py` source-resolution logic into a `SourceResolver` class to reduce nested conditionals and parameter passing.
-- Remove or consolidate the `init-local` and `init-docker` alias commands if they duplicate `osh init --target <name>`.