Branding, Excel watermark, live run progress, and uv

- Login and Reports pages: eCare logo, Waystar and Aquilaehr logos (light
  versions for the dark pages), eCare favicon.
- Excel reports: faded eCare/Waystar/Aquila watermark as the sheet
  background on both sheets. Report writer moves to xlsxwriter, the only
  engine that can set a sheet background.
- Reports page: animated run progress (both download lanes piped into the
  Excel sheet) and a plain-language activity feed built from the run log;
  the raw log stays under "Technical log". /status now returns the
  location count.
- Dependencies move from requirements.txt to pyproject.toml + uv.lock;
  Dockerfile installs uv from PyPI and runs uv sync --frozen.

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

consolidate.py

@@ -5,7 +5,7 @@ Aquilaehr: Patient ("Mary   Lopez Garcia")  + Visit Date
 Waystar:   Patient Name ("LOPEZ, MARY")      + From Date
 Match = same date, same first name, and at least one last-name word in common.
 
-Run:  python consolidate.py
+Run:  uv run consolidate.py
 """
 from pathlib import Path
 
@@ -15,6 +15,7 @@ ROOT = Path(__file__).parent
 WAYSTAR_DIR = ROOT / "processing" / "Waystar"
 AQUILAEHR_DIR = ROOT / "processing" / "Aquilaehr"
 OUT_DIR = ROOT / "output"
+WATERMARK = str(ROOT / "static" / "report-watermark.png")
 SUFFIXES = {"JR", "SR", "II", "III", "IV"}
 
 
@@ -130,20 +131,18 @@ def write_report(df, location, out):
 
 
 def write_xlsx(out, summary, df):
-    with pd.ExcelWriter(out, engine="openpyxl") as xw:
-        summary.to_excel(xw, sheet_name="Summary", index=False)
-        df.to_excel(xw, sheet_name="Reconciliation", index=False)
-        for ws in xw.book.worksheets:
-            ws.freeze_panes = "A2"
-            ws.auto_filter.ref = ws.dimensions
-            for col in ws.columns:
-                width = max(len(str(c.value or "")) for c in col[:200])
-                ws.column_dimensions[col[0].column_letter].width = min(max(width + 2, 10), 60)
-        ws = xw.book["Reconciliation"]
-        for col in ws.iter_cols(min_row=1, max_row=ws.max_row):
-            fmt = {"DOS": "mm/dd/yyyy", "Charges": '"$"#,##0.00'}.get(col[0].value)
-            for c in col[1:] if fmt else ():
-                c.number_format = fmt
+    # xlsxwriter, not openpyxl: only it can set a sheet background (the eCare/Waystar/Aquilaehr watermark).
+    with pd.ExcelWriter(out, engine="xlsxwriter", date_format="mm/dd/yyyy") as xw:
+        money = xw.book.add_format({"num_format": '"$"#,##0.00'})
+        for name, data in (("Summary", summary), ("Reconciliation", df)):
+            data.to_excel(xw, sheet_name=name, index=False)
+            ws = xw.sheets[name]
+            ws.set_background(WATERMARK)
+            ws.freeze_panes(1, 0)
+            ws.autofilter(0, 0, len(data), len(data.columns) - 1)
+            for i, col in enumerate(data.columns):
+                width = max([len(col)] + [len(str(v)) for v in data[col].head(199) if pd.notna(v)])
+                ws.set_column(i, i, min(max(width + 2, 10), 60), money if col == "Charges" else None)
 
 
 ALL_FILE = "All Locations.xlsx"