The proofread checkpoint gets its place: nav order, badge, and a rename

Eric's observation: cleaning up raw reads happens BEFORE resolve, but
the app ordered Review ahead of Catalog and never said proofreading was
a step at all. The pipeline has two human checkpoints — proofread the
reads (after extract), decide the matches (after resolve) — and now the
app says so: the sidebar runs Pipeline, Photos, Titles, Review, Queue,
Library, Help in true workflow order; the Titles page (né Catalog — the
old name suggested a finished collection, which is the Library's job;
/catalog redirects) gets a badge counting unresolved shaky reads; an
edit marks its entry human-verified so the badge drains as you
proofread; the extract stage card nudges toward the proofread before
resolving; and the Help flow is rewritten as six stages + two
checkpoints with the loop called out.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016jXZFSTZQKzAC8fqpWSz9g

tests/test_web_dashboard.py

@@ -226,7 +226,7 @@ def test_every_page_serves_with_shared_shell(tmp_path):
         ("/", "Pipeline"),
         ("/photos", "Reshoot"),
         ("/review", "Review"),
-        ("/catalog", "Catalog"),
+        ("/titles", "Titles"),
         ("/queue", "Upload queue"),
         ("/library", "Library"),
     ):