feat(nav): group Home + Reconcile under a new "Analysis" section

Home now appears in the sidebar as "File Analysis" under a labeled
"Analysis" section together with Reconcile Two Files — both pages
are data-analysis workflows (importing/profiling files vs. matching
across files), so grouping them clarifies the sidebar's mental model.

- tools_registry: new ``analysis`` Section; reconcile moves out of
  automations into it.
- i18n: ``nav.section_analysis`` + ``nav.file_analysis_title`` added
  to en.json and es.json.
- app.py: home dropped from the unlabeled section and surfaced at the
  top of the Analysis group; ``default=True`` preserved so first-visit
  routing is unchanged.

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

src/gui/app.py

@@ -78,6 +78,7 @@ def _page_for(tool_id: str, *, page_slug: str, icon: str, title: str) -> "st.Pag
 
 def _build_navigation() -> dict[str, list]:
     by_section: dict[str, list] = {
+        "analysis": [],
         "cleaners": [],
         "transformations": [],
         "automations": [],
@@ -95,10 +96,16 @@ def _build_navigation() -> dict[str, list]:
             )
         )
 
+    # Home is now surfaced under the new "Analysis" section as
+    # "File Analysis" — the home page's content (importing files,
+    # running the analyzer, browsing findings) is itself a data-analysis
+    # workflow, so grouping it next to Reconcile keeps the sidebar's
+    # mental model coherent. ``default=True`` still points at this
+    # page so first-visit lands here regardless of section placement.
     home = st.Page(
         _home_page,
-        title=_t("nav.home_page_title") or "Home",
-        icon=":material/home:",
+        title=_t("nav.file_analysis_title") or "File Analysis",
+        icon=":material/insert_chart_outlined:",
         default=True,
         url_path="home",
     )
@@ -129,13 +136,14 @@ def _build_navigation() -> dict[str, list]:
         url_path="close",
     )
 
-    # Activate + Close are placed in the unlabeled section alongside
-    # Home (key ``""`` — Streamlit renders no header for it). The CSS
-    # in ``hide_streamlit_chrome`` then hides just their two links by
-    # ``href``, leaving Home visible and no orphan section header /
-    # drilldown marker in the sidebar.
+    # Activate / Logs / Close stay in the unlabeled section (key ``""``)
+    # so the CSS in ``hide_streamlit_chrome`` keeps hiding them by
+    # ``href``. Home moved out of that bucket into "Analysis" — the
+    # unlabeled section now contains ONLY hidden pages, so no orphan
+    # entry appears above the "Analysis" header in the sidebar.
     return {
-        "": [home, activate, logs, close],
+        "": [activate, logs, close],
+        section_label("analysis"): [home, *by_section["analysis"]],
         section_label("cleaners"): by_section["cleaners"],
         section_label("transformations"): by_section["transformations"],
         section_label("automations"): by_section["automations"],

src/gui/tools_registry.py

@@ -24,7 +24,7 @@ Tier = Literal["core", "pro", "enterprise"]
 Status = Literal["Ready", "Coming Soon"]
 # Sidebar grouping. Tools are bucketed by what the user is trying to
 # accomplish rather than by implementation detail.
-Section = Literal["cleaners", "transformations", "automations"]
+Section = Literal["analysis", "cleaners", "transformations", "automations"]
 
 
 @dataclass(frozen=True)
@@ -167,7 +167,7 @@ TOOLS: list[Tool] = [
         ),
         page_slug="11_Reconciler",
         status="Ready",
-        section="automations",
+        section="analysis",
     ),
 ]
 
@@ -175,6 +175,7 @@ TOOLS: list[Tool] = [
 # Display labels for each sidebar section. Kept here so i18n falls back
 # to a sensible English string if a translation pack is missing the key.
 SECTION_LABELS: dict[Section, str] = {
+    "analysis": "Analysis",
     "cleaners": "Data Cleaners",
     "transformations": "Transformations",
     "automations": "Automations",

src/i18n/packs/en.json

@@ -168,11 +168,13 @@
   },
   "nav": {
     "section_review": "Data Review",
+    "section_analysis": "Analysis",
     "section_cleaners": "Data Cleaners",
     "section_transformations": "Transformations",
     "section_automations": "Automations",
     "review_page_title": "Review",
     "home_page_title": "Home",
+    "file_analysis_title": "File Analysis",
     "section_account": "Account",
     "activate_title": "Activate",
     "close_title": "Close",

src/i18n/packs/es.json

@@ -168,11 +168,13 @@
   },
   "nav": {
     "section_review": "Revisión de datos",
+    "section_analysis": "Análisis",
     "section_cleaners": "Limpiadores de datos",
     "section_transformations": "Transformaciones",
     "section_automations": "Automatizaciones",
     "review_page_title": "Revisión",
     "home_page_title": "Inicio",
+    "file_analysis_title": "Análisis de archivo",
     "section_account": "Cuenta",
     "activate_title": "Activar",
     "close_title": "Cerrar",