{
  "_meta": {
    "schema_version": "1.1",
    "source_modules": [
      "mamba-edge/src/features/v0_2_features.py",
      "mamba-edge/src/processing/v0_2_behavior_builder.py",
      "mamba-edge/src/core/v0_2_event_encoder.py"
    ],
    "note": "Schema 1.1 reflects the 3a' encoder revisions (4 promoted categoricals — f_path_category / f_dst_ip_category / f_dst_port_category / f_object_category — plus hash right-sizing on f_proc_name_hash and f_proc_cwd_hash, cwd depth 2 -> 4) and the v0.2.1 deep-aliasing anonymizer (basename allowlist + custom_tool_NNN, salted-HMAC exec_ids). Integer-coded categorical/bucket columns map an integer to a label + semantic description. String-coded categorical columns (path_category, object_category, dst_ip_category, dst_port_category) map the string value directly. Hash columns list bucket count and the raw-parquet column the parser hashed."
  },
  "categorical_int_columns": {
    "f_event_type": {
      "0": {
        "label": "process_exec",
        "desc": "Process execution event (Tetragon process_exec)"
      },
      "1": {
        "label": "process_exit",
        "desc": "Process termination event"
      },
      "2": {
        "label": "process_kprobe",
        "desc": "Kernel-probe event hooked by Tetragon (file/net/cred/mem)"
      },
      "3": {
        "label": "OOV",
        "desc": "Unknown event type — should not appear; sentinel for parser drift"
      }
    },
    "f_kprobe_function": {
      "0": {
        "label": "fd_install",
        "desc": "File descriptor install (file open in the kernel)"
      },
      "1": {
        "label": "security_mmap_file",
        "desc": "LSM hook for mmap() of a file"
      },
      "2": {
        "label": "commit_creds",
        "desc": "Credential change (setuid/setgid/capset)"
      },
      "3": {
        "label": "tcp_connect",
        "desc": "Outbound TCP connect()"
      },
      "4": {
        "label": "tcp_close",
        "desc": "TCP socket close"
      },
      "5": {
        "label": "udp_sendmsg",
        "desc": "UDP send (port 53 = DNS resolves)"
      },
      "6": {
        "label": "inet_csk_accept",
        "desc": "Inbound TCP accept (server-side)"
      },
      "7": {
        "label": "do_unlinkat",
        "desc": "File unlink (delete)"
      },
      "8": {
        "label": "chmod_common",
        "desc": "File permission change"
      },
      "9": {
        "label": "security_file_mprotect",
        "desc": "LSM hook for mprotect() (memory permission change)"
      },
      "10": {
        "label": "sys_ptrace",
        "desc": "ptrace() syscall (process injection / debugger attach)"
      },
      "11": {
        "label": "sys_process_vm_writev",
        "desc": "process_vm_writev() (cross-process memory write)"
      },
      "12": {
        "label": "NOT_KPROBE",
        "desc": "Row is process_exec / process_exit, not a kprobe event"
      },
      "13": {
        "label": "OOV",
        "desc": "Kprobe function not in the v0.2 vocabulary"
      }
    },
    "f_kprobe_policy": {
      "0": {
        "label": "file-monitor",
        "desc": "Tracing policy for file-system kprobes"
      },
      "1": {
        "label": "memory-monitor",
        "desc": "Tracing policy for memory-related kprobes"
      },
      "2": {
        "label": "privilege-monitor",
        "desc": "Tracing policy for credential / privilege kprobes"
      },
      "3": {
        "label": "network-monitor",
        "desc": "Tracing policy for network kprobes"
      },
      "4": {
        "label": "injection-monitor",
        "desc": "Tracing policy for process-injection kprobes"
      },
      "5": {
        "label": "attribute-monitor",
        "desc": "Tracing policy for file-attribute kprobes"
      },
      "6": {
        "label": "NONE",
        "desc": "Row is not a kprobe (process_exec / process_exit)"
      },
      "7": {
        "label": "OOV",
        "desc": "Tracing policy not in the v0.2 vocabulary"
      }
    },
    "f_kprobe_action": {
      "0": {
        "label": "KPROBE_ACTION_POST",
        "desc": "Tetragon emitted the event without taking action"
      },
      "1": {
        "label": "NONE",
        "desc": "Row is not a kprobe"
      },
      "2": {
        "label": "OOV",
        "desc": "Action not seen in v0.2 (e.g. KILL/OVERRIDE in future Tetragon)"
      }
    },
    "f_proc_uid_bucket": {
      "0": {
        "label": "ROOT",
        "desc": "uid == 0 (container root)"
      },
      "1": {
        "label": "RESEARCH_USER",
        "desc": "uid == 1000 (primary research user in container)"
      },
      "2": {
        "label": "SYSTEM_LOW",
        "desc": "1 <= uid <= 99 (historical Unix system accounts)"
      },
      "3": {
        "label": "DAEMON_HIGH",
        "desc": "100 <= uid <= 999 (modern Linux service accounts)"
      },
      "4": {
        "label": "OTHER",
        "desc": "everything else (incl. uid >= 1001, nobody/65534)"
      }
    },
    "f_dst_port_bucket": {
      "0": {
        "label": "NONE",
        "desc": "row has no dst port (non-network event)"
      },
      "1": {
        "label": "LOOPBACK",
        "desc": "dport == 0 (Tetragon's loopback / unset sentinel)"
      },
      "2": {
        "label": "SSH",
        "desc": "dport == 22"
      },
      "3": {
        "label": "DNS",
        "desc": "dport == 53"
      },
      "4": {
        "label": "WEB",
        "desc": "dport in {80, 443, 8080, 8443}"
      },
      "5": {
        "label": "PRIV",
        "desc": "1 <= dport <= 1023 (reserved/privileged ports)"
      },
      "6": {
        "label": "HIGH",
        "desc": "dport >= 1024 (ephemeral / non-standard high ports)"
      }
    },
    "f_args_length_bucket": {
      "0": {
        "label": "ZERO",
        "desc": "no arguments"
      },
      "1": {
        "label": "LT50",
        "desc": "1 <= len(args) < 50 chars"
      },
      "2": {
        "label": "RANGE_50_200",
        "desc": "50 <= len(args) < 200 chars"
      },
      "3": {
        "label": "RANGE_200_1K",
        "desc": "200 <= len(args) < 1000 chars"
      },
      "4": {
        "label": "RANGE_1K_5K",
        "desc": "1000 <= len(args) < 5000 chars"
      },
      "5": {
        "label": "GT5K",
        "desc": "len(args) >= 5000 chars (suspect / oversize cmdlines)"
      }
    },
    "f_cap_count_bucket": {
      "0": {
        "label": "ZERO",
        "desc": "no Linux capabilities held"
      },
      "1": {
        "label": "RANGE_1_2",
        "desc": "1 or 2 capabilities"
      },
      "2": {
        "label": "RANGE_3_5",
        "desc": "3 to 5 capabilities"
      },
      "3": {
        "label": "RANGE_6_15",
        "desc": "6 to 15 capabilities"
      },
      "4": {
        "label": "GE16",
        "desc": "16 or more capabilities (essentially full root)"
      }
    },
    "f_path_sens_cwd": {
      "0": {
        "label": "SENSITIVE_SYS",
        "desc": "/etc/, /root/, /boot/, /usr/sbin/, /sbin/"
      },
      "1": {
        "label": "STAGING",
        "desc": "/tmp/, /var/tmp/, /dev/shm/"
      },
      "2": {
        "label": "RUNTIME",
        "desc": "/var/run/, /run/"
      },
      "3": {
        "label": "USER_HOME",
        "desc": "/home/, /Users/"
      },
      "4": {
        "label": "PROC_SELF",
        "desc": "/proc/self/ (own-process introspection)"
      },
      "5": {
        "label": "VSCODE_DEV",
        "desc": "developer-tooling paths: .vscode-server/, node_modules/, .git/"
      },
      "6": {
        "label": "OTHER",
        "desc": "anything else"
      },
      "7": {
        "label": "NONE",
        "desc": "row has no path (non-file event)"
      }
    },
    "f_path_sens_binary": {
      "0": {
        "label": "SENSITIVE_SYS",
        "desc": "/etc/, /root/, /boot/, /usr/sbin/, /sbin/"
      },
      "1": {
        "label": "STAGING",
        "desc": "/tmp/, /var/tmp/, /dev/shm/"
      },
      "2": {
        "label": "RUNTIME",
        "desc": "/var/run/, /run/"
      },
      "3": {
        "label": "USER_HOME",
        "desc": "/home/, /Users/"
      },
      "4": {
        "label": "PROC_SELF",
        "desc": "/proc/self/ (own-process introspection)"
      },
      "5": {
        "label": "VSCODE_DEV",
        "desc": "developer-tooling paths: .vscode-server/, node_modules/, .git/"
      },
      "6": {
        "label": "OTHER",
        "desc": "anything else"
      },
      "7": {
        "label": "NONE",
        "desc": "row has no path (non-file event)"
      }
    },
    "f_path_sens_kp": {
      "0": {
        "label": "SENSITIVE_SYS",
        "desc": "/etc/, /root/, /boot/, /usr/sbin/, /sbin/"
      },
      "1": {
        "label": "STAGING",
        "desc": "/tmp/, /var/tmp/, /dev/shm/"
      },
      "2": {
        "label": "RUNTIME",
        "desc": "/var/run/, /run/"
      },
      "3": {
        "label": "USER_HOME",
        "desc": "/home/, /Users/"
      },
      "4": {
        "label": "PROC_SELF",
        "desc": "/proc/self/ (own-process introspection)"
      },
      "5": {
        "label": "VSCODE_DEV",
        "desc": "developer-tooling paths: .vscode-server/, node_modules/, .git/"
      },
      "6": {
        "label": "OTHER",
        "desc": "anything else"
      },
      "7": {
        "label": "NONE",
        "desc": "row has no path (non-file event)"
      }
    },
    "f_kp_fd_install_path_sensitivity": {
      "0": {
        "label": "SENSITIVE_SYS",
        "desc": "/etc/, /root/, /boot/, /usr/sbin/, /sbin/"
      },
      "1": {
        "label": "STAGING",
        "desc": "/tmp/, /var/tmp/, /dev/shm/"
      },
      "2": {
        "label": "RUNTIME",
        "desc": "/var/run/, /run/"
      },
      "3": {
        "label": "USER_HOME",
        "desc": "/home/, /Users/"
      },
      "4": {
        "label": "PROC_SELF",
        "desc": "/proc/self/ (own-process introspection)"
      },
      "5": {
        "label": "VSCODE_DEV",
        "desc": "developer-tooling paths: .vscode-server/, node_modules/, .git/"
      },
      "6": {
        "label": "OTHER",
        "desc": "anything else"
      },
      "7": {
        "label": "NONE",
        "desc": "row has no path (non-file event)"
      }
    },
    "f_kp_mmap_path_sensitivity": {
      "0": {
        "label": "SENSITIVE_SYS",
        "desc": "/etc/, /root/, /boot/, /usr/sbin/, /sbin/"
      },
      "1": {
        "label": "STAGING",
        "desc": "/tmp/, /var/tmp/, /dev/shm/"
      },
      "2": {
        "label": "RUNTIME",
        "desc": "/var/run/, /run/"
      },
      "3": {
        "label": "USER_HOME",
        "desc": "/home/, /Users/"
      },
      "4": {
        "label": "PROC_SELF",
        "desc": "/proc/self/ (own-process introspection)"
      },
      "5": {
        "label": "VSCODE_DEV",
        "desc": "developer-tooling paths: .vscode-server/, node_modules/, .git/"
      },
      "6": {
        "label": "OTHER",
        "desc": "anything else"
      },
      "7": {
        "label": "NONE",
        "desc": "row has no path (non-file event)"
      }
    },
    "f_cmdline_entropy": {
      "0": {
        "label": "NULL",
        "desc": "row has no cmdline (non-exec event)"
      },
      "1": {
        "label": "LOW",
        "desc": "Shannon entropy < 2.0 (very repetitive / short)"
      },
      "2": {
        "label": "MID_LOW",
        "desc": "2.0 <= entropy < 3.5"
      },
      "3": {
        "label": "MID",
        "desc": "3.5 <= entropy < 4.5"
      },
      "4": {
        "label": "MID_HIGH",
        "desc": "4.5 <= entropy < 5.5"
      },
      "5": {
        "label": "HIGH",
        "desc": "entropy >= 5.5 (random-looking / encoded payloads)"
      }
    },
    "f_cmdline_compress": {
      "0": {
        "label": "NULL",
        "desc": "row has no cmdline"
      },
      "1": {
        "label": "VERY_COMPRESSIBLE",
        "desc": "ratio < 0.3"
      },
      "2": {
        "label": "COMPRESSIBLE",
        "desc": "0.3 <= ratio < 0.5"
      },
      "3": {
        "label": "MODERATE",
        "desc": "0.5 <= ratio < 0.7"
      },
      "4": {
        "label": "WEAK",
        "desc": "0.7 <= ratio < 0.9"
      },
      "5": {
        "label": "INCOMPRESSIBLE",
        "desc": "ratio >= 0.9 (random / pre-encrypted)"
      }
    },
    "f_time_since_parent_exec": {
      "0": {
        "label": "NULL",
        "desc": "no parent exec_time available"
      },
      "1": {
        "label": "SUB_MS",
        "desc": "< 1 ms since parent exec"
      },
      "2": {
        "label": "MS",
        "desc": "1 ms .. 1 s"
      },
      "3": {
        "label": "SEC",
        "desc": "1 s .. 1 min"
      },
      "4": {
        "label": "MIN",
        "desc": "1 min .. 1 h"
      },
      "5": {
        "label": "HR",
        "desc": ">= 1 h"
      }
    },
    "f_kp_tcp_connect_sock_family": {
      "0": {
        "label": "AF_INET",
        "desc": "IPv4"
      },
      "1": {
        "label": "AF_INET6",
        "desc": "IPv6"
      },
      "2": {
        "label": "NONE",
        "desc": "row is not a network event"
      },
      "3": {
        "label": "OOV",
        "desc": "Socket family outside {AF_INET, AF_INET6}"
      }
    },
    "f_action_family": {
      "0": {
        "label": "PROC_EXEC",
        "desc": "Process execution"
      },
      "1": {
        "label": "PROC_EXIT",
        "desc": "Process termination"
      },
      "2": {
        "label": "NET_CONNECT",
        "desc": "Outbound TCP connect()"
      },
      "3": {
        "label": "NET_CLOSE",
        "desc": "TCP socket close"
      },
      "4": {
        "label": "NET_ACCEPT",
        "desc": "Inbound TCP accept()"
      },
      "5": {
        "label": "NET_SEND",
        "desc": "UDP send (e.g. DNS at dport=53)"
      },
      "6": {
        "label": "FILE_OPEN",
        "desc": "File descriptor install (file open)"
      },
      "7": {
        "label": "FILE_DELETE",
        "desc": "File unlink"
      },
      "8": {
        "label": "FILE_CHMOD",
        "desc": "File permission change"
      },
      "9": {
        "label": "PRIV_CHANGE",
        "desc": "Credential change (setuid / setgid / capset)"
      },
      "10": {
        "label": "PROC_INJECT_PTRACE",
        "desc": "ptrace() — process injection / debugger"
      },
      "11": {
        "label": "PROC_INJECT_VMWRITE",
        "desc": "process_vm_writev() — cross-process memory write"
      },
      "12": {
        "label": "MEM_MAP",
        "desc": "mmap() of a file"
      },
      "13": {
        "label": "MEM_PROTECT",
        "desc": "mprotect() — memory permission change"
      },
      "14": {
        "label": "OTHER",
        "desc": "Catch-all (unknown kprobe in v0.2 corpus)"
      }
    },
    "f_path_category": {
      "0": {
        "label": "VSCODE_DEV",
        "desc": "developer-tooling paths (.vscode-server/, node_modules/, .git/)"
      },
      "1": {
        "label": "SENSITIVE_SYS",
        "desc": "/etc/, /root/, /boot/, /usr/sbin/, /sbin/"
      },
      "2": {
        "label": "TEMP_STAGING",
        "desc": "/tmp/, /var/tmp/, /dev/shm/"
      },
      "3": {
        "label": "RUNTIME",
        "desc": "/var/run/, /run/, /proc/"
      },
      "4": {
        "label": "LIBRARY",
        "desc": "/usr/lib/, /usr/lib32/, /usr/lib64/, /usr/local/lib/, /lib/, /lib32/, /lib64/ — NEW in 3a'"
      },
      "5": {
        "label": "USR_BIN",
        "desc": "/usr/bin/, /usr/local/bin/, /usr/local/sbin/ — NEW in 3a'"
      },
      "6": {
        "label": "OPT",
        "desc": "/opt/ — NEW in 3a'"
      },
      "7": {
        "label": "USER_HOME",
        "desc": "/home/, /Users/"
      },
      "8": {
        "label": "PROC_SELF",
        "desc": "/proc/self/"
      },
      "9": {
        "label": "OTHER",
        "desc": "anything else"
      },
      "10": {
        "label": "NONE",
        "desc": "row has no path"
      }
    },
    "f_dst_ip_category": {
      "0": {
        "label": "LOOPBACK",
        "desc": "127.0.0.0/8 or ::1"
      },
      "1": {
        "label": "LINK_LOCAL",
        "desc": "169.254.0.0/16 or fe80::/10"
      },
      "2": {
        "label": "PRIVATE",
        "desc": "RFC1918: 10/8, 172.16/12, 192.168/16"
      },
      "3": {
        "label": "MULTICAST",
        "desc": "224.0.0.0/4 or ff00::/8"
      },
      "4": {
        "label": "PUBLIC",
        "desc": "publicly-routable IP (anonymized at parser; only category survives)"
      },
      "5": {
        "label": "NONE",
        "desc": "row has no dst IP"
      }
    },
    "f_dst_port_category": {
      "0": {
        "label": "DNS",
        "desc": "dport == 53"
      },
      "1": {
        "label": "WEB",
        "desc": "dport in {80, 443, 8080, 8443}"
      },
      "2": {
        "label": "SSH",
        "desc": "dport == 22"
      },
      "3": {
        "label": "WELL_KNOWN",
        "desc": "1 <= dport < 1024 (other reserved/privileged ports)"
      },
      "4": {
        "label": "REGISTERED",
        "desc": "1024 <= dport < 49152"
      },
      "5": {
        "label": "HIGH",
        "desc": "dport >= 49152 (ephemeral)"
      },
      "6": {
        "label": "NONE",
        "desc": "row has no dst port (non-network event)"
      }
    },
    "f_object_category": {
      "0": {
        "label": "PROCESS",
        "desc": "process_exec / process_exit"
      },
      "1": {
        "label": "FILE",
        "desc": "file-system kprobe (open/delete/chmod)"
      },
      "2": {
        "label": "NETWORK",
        "desc": "TCP/UDP socket kprobe"
      },
      "3": {
        "label": "MEMORY",
        "desc": "mmap / mprotect"
      },
      "4": {
        "label": "CREDENTIAL",
        "desc": "commit_creds (setuid/setgid/capset)"
      },
      "5": {
        "label": "INJECT",
        "desc": "ptrace / process_vm_writev"
      },
      "6": {
        "label": "OTHER",
        "desc": "kprobe outside the v0.2 vocabulary"
      },
      "7": {
        "label": "NONE",
        "desc": "row has no event_type"
      }
    }
  },
  "categorical_string_columns": {
    "path_category": {
      "VSCODE_DEV": "developer-tooling paths (.vscode-server/, node_modules/, .git/)",
      "SENSITIVE_SYS": "/etc/, /root/, /boot/, /usr/sbin/, /sbin/",
      "TEMP_STAGING": "/tmp/, /var/tmp/, /dev/shm/",
      "RUNTIME": "/var/run/, /run/, /proc/",
      "LIBRARY": "/usr/lib/, /usr/lib32/, /usr/lib64/, /usr/local/lib/, /lib/, /lib32/, /lib64/ (new in 3a')",
      "USR_BIN": "/usr/bin/, /usr/local/bin/, /usr/local/sbin/ (new in 3a')",
      "OPT": "/opt/ (new in 3a')",
      "USER_HOME": "/home/, /Users/",
      "PROC_SELF": "/proc/self/",
      "OTHER": "anything else",
      "NONE": "row has no path"
    },
    "object_category": {
      "PROCESS": "process_exec / process_exit",
      "FILE": "file-system kprobe (open/delete/chmod)",
      "NETWORK": "TCP/UDP socket kprobe",
      "CREDENTIAL": "commit_creds (setuid/setgid/capset)",
      "INJECT": "ptrace / process_vm_writev",
      "MEMORY": "mmap / mprotect",
      "OTHER": "kprobe outside the v0.2 vocabulary",
      "NONE": "row has no event_type"
    },
    "dst_ip_category": {
      "LOOPBACK": "127.0.0.0/8 or ::1",
      "LINK_LOCAL": "169.254.0.0/16 or fe80::/10",
      "PRIVATE": "RFC1918: 10/8, 172.16/12, 192.168/16",
      "MULTICAST": "224.0.0.0/4 or ff00::/8",
      "PUBLIC": "publicly-routable IP (anonymized at parser; only category survives)",
      "NONE": "row has no dst IP"
    },
    "dst_port_category": {
      "DNS": "dport == 53",
      "WEB": "dport in {80, 443, 8080, 8443}",
      "SSH": "dport == 22",
      "WELL_KNOWN": "1 <= dport < 1024 (other reserved/privileged ports)",
      "REGISTERED": "1024 <= dport < 49152",
      "HIGH": "dport >= 49152 (ephemeral)",
      "NONE": "row has no dst port (non-network event)"
    }
  },
  "boolean_flag_columns": {
    "f_is_procfs_walk": "1 if the parser flagged this process_exec as a procfs-walk synthetic event; tag-not-drop policy means these flow through with the flag preserved (1,250 train + 96 test events have value=1).",
    "f_uid_eq_parent": "1 if the process and its parent share the same uid.",
    "f_is_setuid_exec": "1 if the exec was a setuid (uid != parent uid AND was a process_exec).",
    "f_kp_commit_creds_uid_change": "1 on commit_creds events where the uid changed.",
    "f_kp_commit_creds_cap_change": "1 on commit_creds events where the capability set changed.",
    "f_kp_udp_sendmsg_dport_eq_53": "1 on udp_sendmsg events with dport=53 (DNS)."
  },
  "numeric_columns": {
    "f_kp_fd_install_fd_int32": "Raw fd integer from fd_install (int32).",
    "f_kp_mmap_prot_uint": "mmap prot bitmask (uint32).",
    "f_kp_mprotect_prot_uint": "mprotect prot bitmask (uint64).",
    "delta_t_prev_ns": "Nanoseconds since the previous event for the same proc_exec_id (per-process keying landed in the 2026-04-29 rebuild; previously global, which produced 44,947 train + 1,643 test negative residuals — now zero).",
    "process_age_ns": "Nanoseconds since the process started (event_time - proc_start_time)."
  },
  "bucketed_int_columns": {
    "f_delta_t_log_bucket": "Half-decade bucket of log10(delta_t_prev_ns + 1).",
    "f_process_age_log_bucket": "Half-decade bucket of log10(process_age_ns + 1).",
    "f_lineage_depth": "Walked-ancestors depth at parser time (capped per Plan G)."
  },
  "hash_columns": [
    {
      "column": "f_proc_name_hash",
      "buckets": 2048,
      "source_in_raw": "proc_binary (basename)",
      "desc": "Hash of the executable basename (e.g. 'bash', 'curl'). Bumped 1024 -> 2048 in 3a' (audit cell 43 showed 27.7% collision on the old size)."
    },
    {
      "column": "f_parent_proc_hash",
      "buckets": 1024,
      "source_in_raw": "parent_binary (basename)",
      "desc": "Hash of the parent process basename."
    },
    {
      "column": "f_proc_cwd_hash",
      "buckets": 4096,
      "source_in_raw": "proc_cwd (sanitized at release; see anonymization log)",
      "desc": "Hash of the first FOUR path components of proc_cwd. Capacity bumped 256 -> 4096 AND depth 2 -> 4 in 3a' (audit cell 43 showed 90.2% collision on the old depth-2 / 256-bucket sizing). Depth-4 captures per-project granularity."
    },
    {
      "column": "f_lineage_bag_hash",
      "buckets": 256,
      "source_in_raw": "(composite — sorted set of lineage basenames)",
      "desc": "Hash of the bag-of-ancestors basename set; order-invariant."
    },
    {
      "column": "f_parent_child_pair_hash",
      "buckets": 1024,
      "source_in_raw": "(derived: parent_binary_basename + ' -> ' + proc_binary_basename)",
      "desc": "Hash of the (parent_basename, child_basename) pair string."
    },
    {
      "column": "f_root_ancestor_basename_hash",
      "buckets": 1024,
      "source_in_raw": "(derived: lineage walk to the process tree root)",
      "desc": "Hash of the root-of-tree basename (typically systemd / sshd)."
    },
    {
      "column": "f_process_tree_id_hash",
      "buckets": 4096,
      "source_in_raw": "(derived: stable hash of the root proc_exec_id)",
      "desc": "Identifier for the process subtree this event belongs to."
    }
  ],
  "identifier_columns": {
    "event_time": "RFC3339 nanosecond timestamp (timestamp[ns, tz=UTC]).",
    "proc_exec_id": "Salted-HMAC pseudonym of the original Tetragon exec_id (format 'exec_<32hex>'). Equality joins are preserved — lineage walks still work — but the original 'host:ts:pid' payload is erased.",
    "proc_pid": "OS process id at the time of the event (uint32). Container-internal."
  },
  "side_string_columns": {
    "proc_binary_basename": "Basename of the executable. Aliased per the v0.2.1 anonymizer: allowlisted distro / dev-tool basenames pass through verbatim; everything else becomes 'custom_tool_NNN' (lex-sorted) or the fixed 'vscode_server_bin' alias for VSCode commit-hash binaries. See reproduction/alias_map.json.",
    "parent_binary_basename": "Basename of the parent executable. Same alias map as proc_binary_basename.",
    "proc_cwd_normalized": "Sanitized current working directory: '/home/<user>' -> '/home/_user_', '/mnt/projects/<X>' -> '/workspace/_project_', etc. See anonymization log for the full rule set.",
    "root_ancestor_basename": "Basename of the process-tree root. Same alias map as the other basename columns.",
    "process_tree_root_exec_id": "Salted-HMAC pseudonym of the original Tetragon exec_id of the process-tree root (format 'exec_<32hex>').",
    "parent_child_pair": "Parent->child basename pair, re-composed from the aliased basenames after Step B of the anonymizer (component-first guarantee — aliased value flows through).",
    "token": "Composite event identifier of shape '<action_family>:<basename>[:<category>...]'. Re-generated via the canonical format_token() from the aliased basenames + already-bucketed categories, so the original (unaliased) basename never re-enters the token."
  }
}