add-doc-ftrlisted

<purpose> Capture a structured document from the current conversation context. Automatically determines the best document structure (decision doc, technical reference, discussion summary, how-to guide, or architecture doc), generates tags for discoverability, and writes to `.things/for-the-record/docs/`. See `references/doc-format.md` for the frontmatter schema and document structures. </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 $HOME</command> <constraint>Never pass `~` to the Read tool.</constraint> <read path="<home>/.things/config.json" output="config" /> <if condition="config-missing">Tell the user: "Run `/things:setup-things` first." Then stop.<exit /></if> <read path="<home>/.things/for-the-record/preferences.json" output="preferences" /> <if condition="preferences-missing">Tell the user: "Run `/setup-ftr` first." Then stop.<exit /></if> </load-config> </step> <step id="parse-arguments" number="2"> <description>Parse Arguments</description> <action>Parse `$ARGUMENTS` for:</action> - **topic**: The subject to document (everything that isn't a flag) - **--detailed**: Override detail level to `detailed` - **--tags tag1,tag2**: Explicit tags to include (comma-separated) <action>Set `detail_level` from `--det