Verbatim-index.html booths were served raw (FileResponse) with no base
template, so they had no favicon and no way back to the booth index — the
gap the app-rendered gallery/zoom pages already covered via base.html.
booth_view now reads a small verbatim index.html and, via a pure
wrap_verbatim_html(), injects:
- a fixed-position 'all booths' chip (scoped class, max z-index, hidden
in print), pinned top-right (empty on left-aligned report layouts; a
top-left chip clips the page title) and appended at the END of the
document so it never reorders the page;
- the Booth favicon at the first head-ish seam, only if the page declares
no icon of its own.
Injection is doctype/charset-safe for the compact HTML real booths use
(<!doctype html><meta charset><title><style>…content, no explicit head/
body): nothing is ever placed ahead of a leading <!doctype> (which would
force quirks mode), and the ~250B favicon link keeps the charset <meta>
inside the first-1024-byte detection window. The raw file route
(/b/<name>/index.html) stays byte-for-byte, so assets and ?dl=1 downloads
are unchanged; files over 8 MB serve raw, unwrapped.
Verified live on nh3-dev :8090 across the real booth shapes (compact-HTML
crow-*/jackdaw-*/mimir-favicon, well-formed dcc-summarizer-ab, own-icon
edict-favicon). 10 new tests; suite 38 passing.
vh
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