system-status: show storage usage (DB, attachments, backups, disk free) — v0.1.0:63

/api/system/status now returns a best-effort storage block: database file size
(crm.db + WAL + SHM), the email_attachments dir, the backups dir, and disk
total/used/free via shutil.disk_usage(DATA_DIR). System Status renders a Storage
section with human-readable sizes so growth can be watched over time.

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

backend/server.py

@@ -3601,6 +3601,38 @@ class CRMHandler(BaseHTTPRequestHandler):
             }
         except Exception:
             out['source_counts'] = None
+        # Storage usage — DB file(s), email attachments, backups, and disk headroom,
+        # so growth can be watched over time. Best-effort; never fails the status call.
+        try:
+            import shutil
+
+            def _fsize(p):
+                try:
+                    return os.path.getsize(p)
+                except OSError:
+                    return 0
+
+            def _dirsize(d):
+                total = 0
+                for root, _dirs, files in os.walk(d):
+                    for f in files:
+                        try:
+                            total += os.path.getsize(os.path.join(root, f))
+                        except OSError:
+                            pass
+                return total
+
+            du = shutil.disk_usage(DATA_DIR)
+            out['storage'] = {
+                'database_bytes': sum(_fsize(DB_PATH + s) for s in ("", "-wal", "-shm")),
+                'attachments_bytes': _dirsize(os.path.join(DATA_DIR, "email_attachments")),
+                'backups_bytes': _dirsize(os.path.join(DATA_DIR, "backups")),
+                'disk_total_bytes': du.total,
+                'disk_used_bytes': du.used,
+                'disk_free_bytes': du.free,
+            }
+        except Exception:
+            out['storage'] = None
         conn.close()
         self.send_json({"data": out})