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

CLAUDE.md

@@ -20,7 +20,7 @@ Full design lives in `bgg-shelf-pipeline-spec.md` (read it before changing pipel
 ## Commands
 
 - `uv sync` — install deps (Python 3.12+, managed by **uv**; use `uv add`, never pip). `uv run bggpipe init` handles first-run setup (folders, .env credentials, the one-time `playwright install chromium`).
-- `uv run bggpipe web` — the app: six pages (Pipeline `/`, Photos, Review, Catalog, Queue, Library) in a shared sidebar shell; stage runs execute one-at-a-time in a background job.
+- `uv run bggpipe web` — the app: seven pages (Pipeline `/`, Photos, Titles, Review, Queue, Library, Help) in a shared sidebar shell; stage runs execute one-at-a-time in a background job.
 - `uv run bggpipe <stage>` — run a pipeline stage. Non-secret settings come from `config.toml` (username, dirs, vision model, rate limit); `--config` overrides the path.
 - `uv run pytest` — the suite runs fully offline against fixtures. Tests marked `live` hit the real BGG API (read-only) and are skipped unless you pass `--run-live`.
 - `uv run ruff check` / `uv run ruff format` — lint (rules E, F, I, UP, B, SIM) and format.