Portal look: aligned header and footer, 7-day chart, today's reasons, pass rate

Header, breadcrumb, page and footer share one 1180px column; the header
marks the current page; a footer sits at the bottom of every page.
Dashboard: pass rate on Checked today, a Last 7 days Pass / Fail / Review
chart, today's Fail and Review reasons grouped with counts, and three
equal cards (Claim status, Runs, Find a claim). Motion is movement only
and off under prefers-reduced-motion. Context.md brought up to date.

Snapshot of local 9d5ac63 (tree scanned: no real claim ids, no patient
data).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/app.py

@@ -31,7 +31,8 @@ import sys
 import html
 import json
 import pathlib
-from datetime import date, datetime
+from collections import Counter
+from datetime import date, datetime, timedelta
 
 ROOT = pathlib.Path(__file__).resolve().parent.parent
 if str(ROOT / "src") not in sys.path:
@@ -248,6 +249,17 @@ def _counts(rows) -> dict:
     return out
 
 
+def _reasons(rows, top=6) -> list:
+    """A day's Fail and Review comments, grouped: `[{category, comment,
+    count}]`, most frequent first, Fail before Review on a tie."""
+    counted = Counter((r.get("category"), (r.get("comments") or "").strip())
+                      for r in rows if r.get("category") in ("Fail", "Review"))
+    ordered = sorted(counted.items(),
+                     key=lambda kv: (-kv[1], kv[0][0] != "Fail", kv[0][1]))
+    return [{"category": cat, "comment": text or "(no comment)", "count": n}
+            for (cat, text), n in ordered[:top]]
+
+
 def create_app(repo, allowed_hosts=ALLOWED_HOSTS, runner=None,
                allowed_origins=ALLOWED_ORIGINS, logs_dir=None,
                screenshots_root=None, users_store=None,
@@ -385,9 +397,15 @@ def create_app(repo, allowed_hosts=ALLOWED_HOSTS, runner=None,
         today = date.today()
         counts = next((d for d in days if d["day"] == today),
                       {"day": today, "runs": 0, **_counts([])})
+        week = sorted((d for d in days
+                       if today - timedelta(days=6) <= d["day"] <= today),
+                      key=lambda d: d["day"])
+        # Only a day with claims costs the second query.
+        reasons = (_reasons(_db(repo.day_results, today))
+                   if counts["claims"] else [])
         return _page(request, "dashboard.html", [["Dashboard", None]],
                      today=counts, has_runs=bool(days),
-                     alert=_last_run_alert())
+                     alert=_last_run_alert(), week=week, reasons=reasons)
 
     @app.get("/days", response_class=HTMLResponse)
     def days_page(request: Request):