cs-changeloglisted

<purpose> Parse and query changelog files. Sources include a target's configured changelogs or a specific plugin's CHANGELOG.md from the plugin cache. Uses `parse-changelog.py` with SHA-256 hash caching for fast re-runs. Filter by version, change type, keyword, or get the latest N entries. See `references/changelog-format.md` for supported formats. </purpose> <steps> <step id="load-config" number="1"> <description>Load Configuration</description> <load-config> <action>Resolve the user's home directory.</action> <command language="bash" output="home" tool="Bash">echo $HOME</command> <constraint>Never pass `~` to the Read tool.</constraint> <read path="<home>/.things/config.json" output="config" /> <if condition="config-missing">Tell the user: "Run `/things:setup-things` first." Then stop.<exit /></if> <read path="<home>/.things/claude-scout/preferences.json" output="preferences" /> <if condition="preferences-missing">Tell the user: "Run `/setup-cs` first." Then stop.<exit /></if> <read path="<home>/.things/claude-scout/targets.json" output="targets" /> </load-config> </step> <step id="parse-arguments" number="2"> <description>Parse Arguments</description> <action>Parse `$ARGUMENTS` for:</action> - **source**: First positional arg — either a target-id (from targets.json) or a plugin name - **--version**: Show a specific version's changes - **--since**: Show all versions since this vers