diff-cslisted

<purpose> Show changes between snapshots for a tracked target. Runs git diff commands on the tracking branch inside the target directory. Filters by path pattern and change type. Presents results according to `preferences.default_diff_output` (summary/detailed/full) unless overridden. </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 $HOME</command> <constraint>Never pass `~` to the Read tool.</constraint> <read path="<home>/.things/config.json" output="config" /> <if condition="config-missing">Tell the user: "Run `/things:setup-things` first." Then stop.<exit /></if> <read path="<home>/.things/claude-scout/preferences.json" output="preferences" /> <if condition="preferences-missing">Tell the user: "Run `/setup-cs` first." Then stop.<exit /></if> <read path="<home>/.things/claude-scout/targets.json" output="targets" /> </load-config> </step> <step id="resolve-target-and-args" number="2"> <description>Resolve Target and Arguments</description> <action>Parse `$ARGUMENTS` for:</action> - **target-id**: First positional arg, or fall back to `preferences.default_target` - **--from**: Starting ref (sha, HEAD~N, or tag). Default: HEAD~1 - **--to**: Ending ref. Default: HEAD - **--since**: Time-based range (e.g., "1 we