Art4Hotel Hub: código + documentación extensiva

ERP a la medida (Python stdlib + SQLite + vanilla JS SPA).
Incluye server.py, index.html, utilidades y documentación:
README, MODELO_DATOS, API, INSTALACION, CONTEXTO, NEGOCIO,
WEB, ONBOARDING, VALOR_SISTEMA, CLAUDE.

Secretos y datos (art4hotel.db, secret.key, ACCESOS.html,
uploads/, backups/) excluidos vía .gitignore.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backup.py

@@ -0,0 +1,90 @@
+#!/usr/bin/env python3
+"""
+Art4Hotel Hub — Backup diario
+Crea snapshot del DB + uploads, conserva últimos N días.
+Corre cada noche via cron.
+"""
+import sqlite3, shutil, datetime, tarfile, sys
+from pathlib import Path
+
+BASE = Path("/mnt/iclaude/art4hotel-hub")
+DB = BASE / "art4hotel.db"
+UPLOADS = BASE / "uploads"
+BACKUPS = BASE / "backups"
+KEEP_DAYS = 30
+
+
+def log(msg):
+    ts = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+    print(f"[{ts}] {msg}", flush=True)
+
+
+def backup_db(out):
+    """Use SQLite online backup (safe with WAL, doesn't lock writers)."""
+    src = sqlite3.connect(str(DB))
+    dst = sqlite3.connect(str(out))
+    with dst:
+        src.backup(dst)
+    src.close()
+    dst.close()
+
+
+def backup_uploads(out_tar):
+    if not UPLOADS.exists():
+        return 0
+    n = 0
+    with tarfile.open(str(out_tar), "w:gz") as tar:
+        for p in UPLOADS.rglob("*"):
+            if p.is_file():
+                tar.add(str(p), arcname=str(p.relative_to(UPLOADS.parent)))
+                n += 1
+    return n
+
+
+def prune_old():
+    cutoff = datetime.datetime.now() - datetime.timedelta(days=KEEP_DAYS)
+    removed = 0
+    for d in BACKUPS.iterdir():
+        if not d.is_dir():
+            continue
+        try:
+            date_part = d.name.split("_")[0]
+            d_date = datetime.datetime.strptime(date_part, "%Y-%m-%d")
+            if d_date < cutoff:
+                shutil.rmtree(d)
+                removed += 1
+        except Exception:
+            pass
+    return removed
+
+
+def main():
+    BACKUPS.mkdir(exist_ok=True)
+    stamp = datetime.datetime.now().strftime("%Y-%m-%d_%H%M")
+    out_dir = BACKUPS / stamp
+    out_dir.mkdir(exist_ok=True)
+
+    log(f"Backup → {out_dir}")
+    try:
+        backup_db(out_dir / "art4hotel.db")
+        log(f"  DB OK ({(out_dir/'art4hotel.db').stat().st_size//1024} KB)")
+    except Exception as e:
+        log(f"  DB ERROR: {e}")
+        sys.exit(1)
+
+    try:
+        n = backup_uploads(out_dir / "uploads.tar.gz")
+        if (out_dir / "uploads.tar.gz").exists():
+            log(f"  uploads OK ({n} archivos, {(out_dir/'uploads.tar.gz').stat().st_size//1024} KB)")
+    except Exception as e:
+        log(f"  uploads ERROR: {e}")
+
+    removed = prune_old()
+    if removed:
+        log(f"  Eliminados {removed} backup(s) > {KEEP_DAYS} días")
+
+    log("Listo.")
+
+
+if __name__ == "__main__":
+    main()