Web dashboard step 2: full issue pages, article chapters, POST /rate

Signed-in issue page with the Brief, downloads, index and colophon; article,
World Briefing and Behind the paper pages under the login guard; the rating
widget with its fetch enhancement; the admin-only POST /rate writing
dashboard-attributed rating events; the HMAC confirmation page links to the
site.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NHyYupFdBiR4VfoUM7NjSM

src/web/templates/_rating_widget.html

@@ -0,0 +1,11 @@
+<form class="rating" method="post" action="/rate">
+  <input type="hidden" name="article_id" value="{{ widget.article_id }}">
+  <input type="hidden" name="issue_date" value="{{ widget.issue_date }}">
+  <input type="hidden" name="next" value="{{ widget.next }}">
+  <span class="rating-prompt">Was this a good pick?</span>
+  <button type="submit" name="label" value="loved" data-label="loved"{% if widget.current == "loved" %} class="active" aria-pressed="true"{% else %} aria-pressed="false"{% endif %}>Loved it</button>
+  <button type="submit" name="label" value="good" data-label="good"{% if widget.current == "good" %} class="active" aria-pressed="true"{% else %} aria-pressed="false"{% endif %}>Good</button>
+  <button type="submit" name="label" value="down" data-label="down"{% if widget.current == "down" %} class="active" aria-pressed="true"{% else %} aria-pressed="false"{% endif %}>Not for me</button>
+{% if widget.show_note %}<label class="rating-note">Note <input name="note"></label>{% endif %}
+  <button class="clear{% if widget.current == "cleared" %} active{% endif %}" type="submit" name="label" value="cleared" data-label="cleared"{% if widget.current == "cleared" %} aria-pressed="true"{% else %} aria-pressed="false"{% endif %}>clear</button>
+</form>