feat(eda): render de models en markdown + PDF DB-level para profile_database (H4,H9)

- H4: render_eda_markdown anade seccion Modelos (PCA/KMeans/normalidad/outliers);
  render_eda_pdf formatea models/series/caveats como tablas (no str(dict) crudo)
- H9: profile_database gana flag emit_pdf -> PDF movil DB-level (resumen tablas +
  join graph) via render_eda_pdf_relational; clave report_pdf_path
- aditivos y retrocompatibles (flags default False). 38 tests verdes

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

python/functions/pipelines/profile_database.py

@@ -12,6 +12,7 @@ Funciones del registry compuestas (NO se reimplementa su logica):
   - build_join_graph          : grafo de relaciones inter-tabla + diagrama Mermaid.
   - duckdb_list_tables        : introspeccion "que tablas hay" (read-only).
   - render_eda_markdown       : report legible de un TableProfile.
+  - render_eda_pdf_relational : PDF movil DB-level (resumen de tablas + join graph).
 
 Aporta una capa propia de AGREGACION A NIVEL DE BASE: ensambla un DatabaseProfile
 con el resumen de cada tabla, los TableProfiles completos, las FK candidatas y el
@@ -31,6 +32,7 @@ from datascience import (
     build_join_graph,
     infer_fk_containment_duckdb,
     render_eda_markdown,
+    render_eda_pdf_relational,
 )
 from infra import duckdb_list_tables
 from pipelines.profile_table import profile_table
@@ -118,6 +120,7 @@ def profile_database(
     report_dir: str = "reports",
     write_report: bool = True,
     min_inclusion: float = 0.9,
+    emit_pdf: bool = False,
 ) -> dict:
     """Perfila una base DuckDB entera + sus relaciones inter-tabla.
 
@@ -134,11 +137,16 @@ def profile_database(
             paths del retorno son None.
         min_inclusion: umbral minimo de inclusion (0-1) para emitir una FK
             candidata (se pasa a infer_fk_containment_duckdb). Default 0.9.
+        emit_pdf: si True (default False) renderiza un PDF movil DB-level con
+            render_eda_pdf_relational (resumen de tablas + relaciones FK + join
+            graph) junto a los reports y devuelve su ruta en report_pdf_path. Con
+            False no se toca el PDF (retrocompatible) y report_pdf_path es None.
 
     Returns:
         dict dict-no-throw. En exito:
             {status:'ok', db_profile:<DatabaseProfile>,
-             report_md_path:str|None, report_json_path:str|None}.
+             report_md_path:str|None, report_json_path:str|None,
+             report_pdf_path:str|None}.
         En error (sin lanzar): {status:'error', error:str}.
 
         DatabaseProfile = {
@@ -204,12 +212,13 @@ def profile_database(
             "errors": errors,
         }
 
-        # 6) Reports opcionales.
+        # 6) Reports opcionales (markdown + JSON sidecar + PDF movil DB-level).
         report_md_path = None
         report_json_path = None
+        report_pdf_path = None
+        ts = datetime.now(timezone.utc).strftime("%Y%m%d-%H%M%S")
         if write_report:
             os.makedirs(report_dir, exist_ok=True)
-            ts = datetime.now(timezone.utc).strftime("%Y%m%d-%H%M%S")
             report_json_path = os.path.join(report_dir, f"eda_db_{ts}.json")
             report_md_path = os.path.join(report_dir, f"eda_db_{ts}.md")
             with open(report_json_path, "w", encoding="utf-8") as fh:
@@ -219,11 +228,23 @@ def profile_database(
             with open(report_md_path, "w", encoding="utf-8") as fh:
                 fh.write(_render_db_markdown(db_profile))
 
+        # PDF DB-level (legible en movil): resumen de tablas + join graph. Se
+        # genera bajo demanda (emit_pdf) reusando el renderer relational del grupo.
+        if emit_pdf:
+            try:
+                os.makedirs(report_dir, exist_ok=True)
+                pdf_target = os.path.join(report_dir, f"eda_db_{ts}.pdf")
+                pres = render_eda_pdf_relational(db_profile, pdf_target)
+                report_pdf_path = pres.get("pdf_path")
+            except Exception:  # noqa: BLE001
+                report_pdf_path = None
+
         return {
             "status": "ok",
             "db_profile": db_profile,
             "report_md_path": report_md_path,
             "report_json_path": report_json_path,
+            "report_pdf_path": report_pdf_path,
         }
     except Exception as e:  # noqa: BLE001
         return {"status": "error", "error": str(e)}