Render the my-decisions overview on the signed-in home page (INFD-WP-0003 T03)

Groups the reviewer's memos (needs attention, open, accepted, declined,
returned, closed, not available) above the manual memo-id form. Server
rendered and escaped; refused rows show only the memo id. The Chromium
harness gains a home-overview check (13 checks pass).

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

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 359683@bnt-lap001
Assistant-Session: eebdc939-7a9b-4e50-9d39-c8437e8a14ec

informed_decision/web.py

@@ -18,7 +18,7 @@ from .policy import PolicyError
 from .provenance import HumanControlNotDischargeable
 from .review import ReviewError
 from .store import Conflict, EvidenceUnavailable, StoreError
-from .ui import STYLES, document, error_page, review_page
+from .ui import STYLES, document, error_page, overview_section, review_page
 
 FLOW_COOKIE = "__Host-infd-flow"
 SESSION_COOKIE = "__Host-infd-session"
@@ -188,7 +188,8 @@ class App:
         if method == "GET" and path == "/":
             if session:
                 content = (f"<p>Signed in as {html.escape(session.subject)}.</p>"
-                    + ('<h1>Open a decision review</h1><p>Enter the memo identifier supplied with your review request.</p>'
+                    + (overview_section(self.review.overview(session)) if self.review is not None else '')
+                    + ('<h2>Open a decision review</h2><p>Enter the memo identifier supplied with your review request.</p>'
                        '<form method="get" action="/review"><label>Memo identifier <input name="memo_id" required maxlength="256"></label>'
                        '<button type="submit">Open review</button></form>' if self.review is not None else
                        '<p>Decision review is being prepared. No approval has been recorded.</p>') +