docs: add the north-side reference task and record the sibling image tooling

ROADMAP gains an explicit item for licensed photography of the TCL Chinese
Theatre (way 424105908) and Madame Tussaud's (way 424105889). The inventory
records which sibling tools exist, that refcollect.py is unlicensed-tmp-only and
cannot feed committed references, and that the OpenRouter key stays outside this
repository.

ROADMAP.md

@@ -37,6 +37,7 @@ Status detail in [Docs/setup.md](Docs/setup.md); workstation audit in [Docs/envi
 
 - [ ] Establish a consistent scale test, named export presets, and repeatable import settings.
 - [-] Collect licensed reference photography for manual façade work.
+- [ ] Download licensed reference photography for the two north-side buildings inside the 50 m buffer — TCL Chinese Theatre (OSM way 424105908, 6925 Hollywood Blvd) and Madame Tussaud's (way 424105889, 6933 Hollywood Blvd). No photograph of either exists in the current set. Keep the licence/provenance sidecar pattern from `Art/reference/hollywood/`, and do not source them from an unlicensed image search. See `Docs/data-inventory.md` for the tooling available.
 - [ ] Model hero façade for the El Capitan Entertainment Centre site.
 - [ ] Model surrounding block frontage.
 - [ ] Model simplified background buildings directly across Hollywood Boulevard.