todo: group the url and query-string items into one theme

files-app becomes url-state: the file browser is where the work happened, but where
selection lives and who clears a query string are framework questions. The panel
framework's version of the same question moves in beside them, extracted from the
deep-read item, which keeps it as one of its three questions.

Item ids changed with the theme. Done now deliberately — no board reads them yet, and
this is the last cheap moment to move one.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

todo/url-state/rows-are-still-not-links.md

@@ -0,0 +1,24 @@
+---
+id: url-state/rows-are-still-not-links
+title: "Rows are still not links"
+theme: url-state
+status: open
+created: 2026-08-20
+date_source: assumed
+order: 1
+---
+
+**Rows are still not links.** This is the half that did not get done, and it is the original
+finding. Both list and grid render `<div onDoubleClick>` (`FileItem.tsx:701,748`), and search
+results render `<div onClick>` (`FileViewContainer.tsx:187`) — the "opaque click" that
+`docs/navigation-audit.md` names. No cmd-click into a new tab, no middle-click, not
+link-focusable, and the target lives in a closure rather than the DOM.
+
+It is now much easier than it was: `folderHref(path)` gives a folder's URL and `hrefForPath` gives
+a full `To` with the overlay already stripped, so a row becomes
+`<Link to={hrefForPath(childPath)}>` and a file row becomes a link that sets `?view=<name>`. The
+breadcrumb has done exactly this since before today and is the model.
+
+Watch for: a row is also a click target for SELECTION (single click selects, double opens,
+shift/cmd extend). An anchor changes what those gestures mean by default, so the selection
+handlers have to keep working and `preventDefault` where they win.