feat(brand): rebrand to UNALOGIX DataTools + Clean. Normalize. Transform.

User-facing copy + brand updates landed together:

- Page H1 + browser-tab title: "DataTools — Data Cleaning Mastery"
  → "UNALOGIX DataTools". Same change in es.json (was "DataTools —
  Maestría en limpieza de datos").
- Hero subtitle: long descriptive caption replaced with the tagline
  "Clean. Normalize. Transform." (es: "Limpia. Normaliza.
  Transforma.").
- Sidebar brand block: wordmark is now two lines — UNALOGIX in tiny
  uppercase tracked eyebrow style on top, DataTools in the 15px
  semibold wordmark beneath. The 28px "D" chip stays as the
  recognizable mark. New ``.dt-brand-eyebrow`` rule in
  ``_DESIGN_TOKENS_CSS``.

Top-right Streamlit chrome cleanup — the user reported two stacked
icon buttons. ``.streamlit/config.toml`` bumped to
``toolbarMode = "viewer"`` (most aggressive — suppresses status
indicator + deploy button + running glyph). CSS belt-and-suspenders
hides ``stToolbar``, ``stToolbarActions``, ``stStatusWidget``,
``stDecoration`` for newer Streamlit releases that keep emitting
these with inline styles even under toolbarMode=viewer.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.streamlit/config.toml

@@ -1,5 +1,8 @@
 [client]
-toolbarMode = "minimal"
+# ``viewer`` is the most aggressive — hides Streamlit's running
+# indicator, deploy button, and status icons. Keeps the main content
+# area's top-right corner clean.
+toolbarMode = "viewer"
 
 [browser]
 gatherUsageStats = false

src/gui/components/_legacy.py

@@ -43,11 +43,19 @@ header[data-testid="stHeader"] {
     background: transparent !important;
     height: 0 !important;
 }
-/* Hide main hamburger menu and deploy button explicitly (don't rely on
+/* Hide every Streamlit-shipped icon button in the header band:
-   hiding the whole header). */
+   hamburger menu, deploy button, status / running indicator,
+   toolbar action stacks. ``toolbarMode = "viewer"`` already suppresses
+   most of these but newer Streamlit releases keep emitting them with
+   tiny inline styles, so we belt-and-suspenders the visibility from
+   CSS too. */
 #MainMenu,
 [data-testid="stMainMenu"],
-[data-testid="stAppDeployButton"] {
+[data-testid="stAppDeployButton"],
+[data-testid="stToolbar"],
+[data-testid="stToolbarActions"],
+[data-testid="stStatusWidget"],
+[data-testid="stDecoration"] {
     display: none !important;
 }
 /* Keep the sidebar expand control visible and clickable above page content. */
@@ -212,9 +220,20 @@ body, .stApp {
 .dt-brand-name {
     font-family: var(--font-sans);
     font-weight: 600;
-    font-size: 16px;
+    font-size: 15px;
     letter-spacing: -0.02em;
     color: var(--ink);
+    line-height: 1.05;
+    display: flex;
+    flex-direction: column;
+    gap: 1px;
+}
+.dt-brand-eyebrow {
+    font-size: 9.5px;
+    font-weight: 600;
+    letter-spacing: 0.14em;
+    text-transform: uppercase;
+    color: var(--ink-tertiary);
     line-height: 1;
 }
 /* The stock Streamlit logo placeholder takes 100x32 of space; hide
@@ -924,7 +943,10 @@ _INJECT_BRAND_JS = """
       brand.className = 'dt-brand';
       brand.innerHTML =
         '<div class="dt-brand-mark">D</div>' +
-        '<div class="dt-brand-name">DataTools</div>';
+        '<div class="dt-brand-name">' +
+        '<span class="dt-brand-eyebrow">UNALOGIX</span>' +
+        'DataTools' +
+        '</div>';
       header.insertBefore(brand, header.firstChild);
     }
     var doc;

src/i18n/packs/en.json

@@ -4,9 +4,9 @@
     "footer": "Runs locally. Your data never leaves this computer. | DataTools v3.0"
   },
   "home": {
-    "page_title": "DataTools — Data Cleaning Mastery",
+    "page_title": "UNALOGIX DataTools",
-    "title": "DataTools — Data Cleaning Mastery",
+    "title": "UNALOGIX DataTools",
-    "caption": "A 9-tool suite for cleaning, standardizing, and validating tabular data.",
+    "caption": "Clean. Normalize. Transform.",
     "privacy_pill": "Runs 100% locally",
     "findings_badge_one": "{n} finding",
     "findings_badge_other": "{n} findings"

src/i18n/packs/es.json

@@ -4,9 +4,9 @@
     "footer": "Se ejecuta localmente. Tus datos nunca salen de este equipo. | DataTools v3.0"
   },
   "home": {
-    "page_title": "DataTools — Maestría en limpieza de datos",
+    "page_title": "UNALOGIX DataTools",
-    "title": "DataTools — Maestría en limpieza de datos",
+    "title": "UNALOGIX DataTools",
-    "caption": "Conjunto de 9 herramientas para limpiar, estandarizar y validar datos tabulares.",
+    "caption": "Limpia. Normaliza. Transforma.",
     "privacy_pill": "Se ejecuta 100% en local",
     "findings_badge_one": "{n} hallazgo",
     "findings_badge_other": "{n} hallazgos"