diff --git a/crates/degu/src/commands/quota.rs b/crates/degu/src/commands/quota.rs
index cbd2d6b..9661182 100644
--- a/crates/degu/src/commands/quota.rs
+++ b/crates/degu/src/commands/quota.rs
@@ -1,6 +1,4 @@
-mod model;
 mod output;
-mod platform;
 
 use crate::cli::QuotaArgs;
 use crate::commands::next_action::{self, OutputMode, Request, Workflow};
@@ -15,7 +13,7 @@ pub(crate) fn run(args: QuotaArgs, ui: Ui) -> Result<()> {
     let target_text = escape_terminal_text(&target.display().to_string());
     let canonical = std::fs::canonicalize(&target)
         .with_context(|| format!("quota target is unavailable: {target_text}"))?;
-    let report = platform::probe(&canonical)?;
+    let report = crate::quota::probe(&canonical)?;
     output::print(&report, json, ui)?;
     next_action::print(Request {
         output: output_mode(json, ui),
diff --git a/crates/degu/src/commands/quota/output.rs b/crates/degu/src/commands/quota/output.rs
index 5b9ecf3..f39bfd1 100644
--- a/crates/degu/src/commands/quota/output.rs
+++ b/crates/degu/src/commands/quota/output.rs
@@ -1,6 +1,6 @@
-use super::model::{QuotaDimension, QuotaGrace, QuotaGraceState, QuotaReport};
 use crate::output::stdoutln;
 use crate::presentation::{escape_terminal_text, human_bytes, ratio_bar};
+use crate::quota::model::{QuotaDimension, QuotaGrace, QuotaGraceState, QuotaSnapshot};
 use crate::runtime::{Glyphs, Ui};
 use anyhow::Result;
 use std::cmp::Ordering;
@@ -10,7 +10,7 @@ use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
 const PERCENT_SCALE: f64 = 100.0;
 const DETAIL_INDENT: usize = 11;
 
-pub(super) fn print(report: &QuotaReport, json: bool, ui: Ui) -> Result<()> {
+pub(super) fn print(report: &QuotaSnapshot, json: bool, ui: Ui) -> Result<()> {
     if json {
         stdoutln!("{}", serde_json::to_string_pretty(report)?)?;
     } else {
@@ -19,7 +19,7 @@ pub(super) fn print(report: &QuotaReport, json: bool, ui: Ui) -> Result<()> {
     Ok(())
 }
 
-fn render_human(report: &QuotaReport, ui: Ui) -> String {
+fn render_human(report: &QuotaSnapshot, ui: Ui) -> String {
     let glyphs = ui.glyphs;
     let separator = glyphs.separator;
     let target = escape_terminal_text(&report.scope.path.display().to_string());
diff --git a/crates/degu/src/commands/quota/output/tests.rs b/crates/degu/src/commands/quota/output/tests.rs
index 2df5926..14c2fb3 100644
--- a/crates/degu/src/commands/quota/output/tests.rs
+++ b/crates/degu/src/commands/quota/output/tests.rs
@@ -1,6 +1,7 @@
 use super::{format_count, render_dimension, render_human};
-use crate::commands::quota::model::{
-    ActiveQuota, QuotaDimension, QuotaGrace, QuotaGraceState, QuotaLimits, QuotaReport, QuotaScope,
+use crate::quota::model::{
+    ActiveQuota, QuotaDimension, QuotaGrace, QuotaGraceState, QuotaLimits, QuotaScope,
+    QuotaSnapshot,
 };
 use crate::runtime::{Glyphs, Ui};
 use std::path::PathBuf;
@@ -12,7 +13,7 @@ fn quota_human_escapes_scope_and_provider_terminal_controls() {
         PathBuf::from("/mnt/\tdata"),
         "ext4\x1b[31m".to_owned(),
     );
-    let report = QuotaReport::active(
+    let report = QuotaSnapshot::active(
         scope,
         1000,
         ActiveQuota {
@@ -43,7 +44,7 @@ fn quota_human_reflows_fields_for_a_narrow_terminal() {
         PathBuf::from("/home/user/a-very-long-mount-point"),
         "ext4".to_owned(),
     );
-    let report = QuotaReport::active(
+    let report = QuotaSnapshot::active(
         scope,
         1000,
         ActiveQuota {
diff --git a/crates/degu/src/lib.rs b/crates/degu/src/lib.rs
index 36e4566..6c67ec9 100644
--- a/crates/degu/src/lib.rs
+++ b/crates/degu/src/lib.rs
@@ -13,6 +13,7 @@ mod findings_table;
 mod lifecycle;
 mod output;
 mod presentation;
+mod quota;
 mod runtime;
 mod source_selection;
 mod value_parser;
diff --git a/crates/degu/src/quota.rs b/crates/degu/src/quota.rs
new file mode 100644
index 0000000..7335278
--- /dev/null
+++ b/crates/degu/src/quota.rs
@@ -0,0 +1,12 @@
+pub(crate) mod model;
+mod platform;
+
+use std::path::Path;
+
+pub(crate) use model::QuotaSnapshot;
+pub(crate) use platform::ProbeError;
+
+/// Read one authoritative quota snapshot for an already-resolved path.
+pub(crate) fn probe(path: &Path) -> Result<QuotaSnapshot, ProbeError> {
+    platform::probe(path)
+}
diff --git a/crates/degu/src/commands/quota/model.rs b/crates/degu/src/quota/model.rs
similarity index 80%
rename from crates/degu/src/commands/quota/model.rs
rename to crates/degu/src/quota/model.rs
index 83294cc..ad44335 100644
--- a/crates/degu/src/commands/quota/model.rs
+++ b/crates/degu/src/quota/model.rs
@@ -2,19 +2,19 @@ use serde::Serialize;
 use std::path::PathBuf;
 
 #[derive(Debug, Serialize)]
-pub(super) struct QuotaReport {
-    pub(super) scope: QuotaScope,
-    pub(super) subject: QuotaSubject,
-    pub(super) provider: &'static str,
-    pub(super) data_source: &'static str,
-    pub(super) state: &'static str,
-    pub(super) space: QuotaDimension,
-    pub(super) inodes: QuotaDimension,
+pub(crate) struct QuotaSnapshot {
+    pub(crate) scope: QuotaScope,
+    pub(crate) subject: QuotaSubject,
+    pub(crate) provider: &'static str,
+    pub(crate) data_source: &'static str,
+    pub(crate) state: &'static str,
+    pub(crate) space: QuotaDimension,
+    pub(crate) inodes: QuotaDimension,
 }
 
 #[cfg(any(target_os = "linux", test))]
-impl QuotaReport {
-    pub(super) fn active(scope: QuotaScope, subject_id: u32, quota: ActiveQuota) -> Self {
+impl QuotaSnapshot {
+    pub(crate) fn active(scope: QuotaScope, subject_id: u32, quota: ActiveQuota) -> Self {
         Self {
             scope,
             subject: QuotaSubject::user(subject_id),
@@ -28,23 +28,23 @@ impl QuotaReport {
 }
 
 #[cfg(any(target_os = "linux", test))]
-pub(super) struct ActiveQuota {
-    pub(super) provider: &'static str,
-    pub(super) data_source: &'static str,
-    pub(super) space: QuotaDimension,
-    pub(super) inodes: QuotaDimension,
+pub(crate) struct ActiveQuota {
+    pub(crate) provider: &'static str,
+    pub(crate) data_source: &'static str,
+    pub(crate) space: QuotaDimension,
+    pub(crate) inodes: QuotaDimension,
 }
 
 #[derive(Debug, Serialize)]
-pub(super) struct QuotaScope {
-    pub(super) path: PathBuf,
-    pub(super) mount_point: PathBuf,
-    pub(super) filesystem: String,
+pub(crate) struct QuotaScope {
+    pub(crate) path: PathBuf,
+    pub(crate) mount_point: PathBuf,
+    pub(crate) filesystem: String,
 }
 
 #[cfg(any(target_os = "linux", test))]
 impl QuotaScope {
-    pub(super) fn new(path: PathBuf, mount_point: PathBuf, filesystem: String) -> Self {
+    pub(crate) fn new(path: PathBuf, mount_point: PathBuf, filesystem: String) -> Self {
         Self {
             path,
             mount_point,
@@ -54,9 +54,9 @@ impl QuotaScope {
 }
 
 #[derive(Debug, Serialize)]
-pub(super) struct QuotaSubject {
-    pub(super) kind: &'static str,
-    pub(super) id: u32,
+pub(crate) struct QuotaSubject {
+    pub(crate) kind: &'static str,
+    pub(crate) id: u32,
 }
 
 #[cfg(any(target_os = "linux", test))]
@@ -67,18 +67,18 @@ impl QuotaSubject {
 }
 
 #[derive(Debug, Serialize)]
-pub(super) struct QuotaDimension {
-    pub(super) used: u64,
-    pub(super) soft_limit: Option<u64>,
-    pub(super) hard_limit: Option<u64>,
-    pub(super) headroom_to_soft_limit: Option<u64>,
-    pub(super) headroom_to_hard_limit: Option<u64>,
-    pub(super) grace: Option<QuotaGrace>,
+pub(crate) struct QuotaDimension {
+    pub(crate) used: u64,
+    pub(crate) soft_limit: Option<u64>,
+    pub(crate) hard_limit: Option<u64>,
+    pub(crate) headroom_to_soft_limit: Option<u64>,
+    pub(crate) headroom_to_hard_limit: Option<u64>,
+    pub(crate) grace: Option<QuotaGrace>,
 }
 
 #[cfg(any(target_os = "linux", test))]
 impl QuotaDimension {
-    pub(super) fn new(used: u64, limits: QuotaLimits, grace: Option<QuotaGrace>) -> Self {
+    pub(crate) fn new(used: u64, limits: QuotaLimits, grace: Option<QuotaGrace>) -> Self {
         let soft_limit = nonzero_limit(limits.soft);
         let hard_limit = nonzero_limit(limits.hard);
         Self {
@@ -93,18 +93,18 @@ impl QuotaDimension {
 }
 
 #[derive(Debug, Serialize)]
-pub(super) struct QuotaGrace {
-    pub(super) state: QuotaGraceState,
+pub(crate) struct QuotaGrace {
+    pub(crate) state: QuotaGraceState,
     /// `None` means the provider reported an expired grace period without a
     /// deadline (Lustre prints `none` or `expired`); degu never synthesizes
     /// one. Serialized as an explicit `null`: the key is part of the frozen
     /// JSON contract and must never be omitted.
-    pub(super) expires_at_unix: Option<u64>,
+    pub(crate) expires_at_unix: Option<u64>,
 }
 
 #[cfg(any(target_os = "linux", test))]
 impl QuotaGrace {
-    pub(super) fn from_kernel_deadline(deadline: u64, observed_at_unix: u64) -> Option<Self> {
+    pub(crate) fn from_kernel_deadline(deadline: u64, observed_at_unix: u64) -> Option<Self> {
         nonzero_limit(deadline).map(|expires_at_unix| Self {
             state: if expires_at_unix > observed_at_unix {
                 QuotaGraceState::Active
@@ -118,7 +118,7 @@ impl QuotaGrace {
 
 #[derive(Clone, Copy, Debug, Eq, PartialEq, Serialize)]
 #[serde(rename_all = "snake_case")]
-pub(super) enum QuotaGraceState {
+pub(crate) enum QuotaGraceState {
     #[cfg_attr(all(not(target_os = "linux"), not(test)), allow(dead_code))]
     Active,
     #[cfg_attr(all(not(target_os = "linux"), not(test)), allow(dead_code))]
@@ -126,14 +126,14 @@ pub(super) enum QuotaGraceState {
 }
 
 #[cfg(any(target_os = "linux", test))]
-pub(super) struct QuotaLimits {
-    pub(super) soft: u64,
-    pub(super) hard: u64,
+pub(crate) struct QuotaLimits {
+    pub(crate) soft: u64,
+    pub(crate) hard: u64,
 }
 
 #[cfg(any(target_os = "linux", test))]
 impl QuotaLimits {
-    pub(super) fn new(soft: u64, hard: u64) -> Self {
+    pub(crate) fn new(soft: u64, hard: u64) -> Self {
         Self { soft, hard }
     }
 }
@@ -151,8 +151,8 @@ fn headroom(limit: Option<u64>, used: u64) -> Option<u64> {
 #[cfg(test)]
 mod tests {
     use super::{
-        ActiveQuota, QuotaDimension, QuotaGrace, QuotaGraceState, QuotaLimits, QuotaReport,
-        QuotaScope,
+        ActiveQuota, QuotaDimension, QuotaGrace, QuotaGraceState, QuotaLimits, QuotaScope,
+        QuotaSnapshot,
     };
     use std::path::PathBuf;
 
@@ -235,7 +235,7 @@ mod tests {
             PathBuf::from("/home"),
             "ext4".to_owned(),
         );
-        let report = QuotaReport::active(
+        let report = QuotaSnapshot::active(
             scope,
             1000,
             ActiveQuota {
diff --git a/crates/degu/src/commands/quota/platform.rs b/crates/degu/src/quota/platform.rs
similarity index 95%
rename from crates/degu/src/commands/quota/platform.rs
rename to crates/degu/src/quota/platform.rs
index 1983c4d..0dc5430 100644
--- a/crates/degu/src/commands/quota/platform.rs
+++ b/crates/degu/src/quota/platform.rs
@@ -3,9 +3,9 @@ mod linux;
 #[cfg(target_os = "macos")]
 mod macos;
 
-use super::model::QuotaReport;
 #[cfg(target_os = "linux")]
 use super::model::QuotaScope;
+use super::model::QuotaSnapshot;
 use crate::presentation::escape_terminal_text as escaped;
 use std::fmt;
 use std::path::Path;
@@ -29,7 +29,7 @@ impl MountInfo {
 }
 
 #[derive(Debug)]
-pub(super) enum ProbeError {
+pub(crate) enum ProbeError {
     #[cfg(target_os = "linux")]
     NotConfigured {
         filesystem: String,
@@ -161,17 +161,17 @@ fn failure_fields(error: &ProbeError) -> (&'static str, &str, &str, &str) {
 }
 
 #[cfg(target_os = "linux")]
-pub(super) fn probe(path: &Path) -> Result<QuotaReport, ProbeError> {
+pub(super) fn probe(path: &Path) -> Result<QuotaSnapshot, ProbeError> {
     linux::probe(path)
 }
 
 #[cfg(target_os = "macos")]
-pub(super) fn probe(path: &Path) -> Result<QuotaReport, ProbeError> {
+pub(super) fn probe(path: &Path) -> Result<QuotaSnapshot, ProbeError> {
     macos::probe(path)
 }
 
 #[cfg(not(any(target_os = "linux", target_os = "macos")))]
-pub(super) fn probe(path: &Path) -> Result<QuotaReport, ProbeError> {
+pub(super) fn probe(path: &Path) -> Result<QuotaSnapshot, ProbeError> {
     Err(ProbeError::Unsupported {
         filesystem: "unknown".to_owned(),
         mount_point: path.display().to_string(),
diff --git a/crates/degu/src/commands/quota/platform/linux.rs b/crates/degu/src/quota/platform/linux.rs
similarity index 97%
rename from crates/degu/src/commands/quota/platform/linux.rs
rename to crates/degu/src/quota/platform/linux.rs
index f124adf..9468d14 100644
--- a/crates/degu/src/commands/quota/platform/linux.rs
+++ b/crates/degu/src/quota/platform/linux.rs
@@ -1,9 +1,7 @@
 mod lustre;
 
 use super::{MountInfo, ProbeError};
-use crate::commands::quota::model::{
-    ActiveQuota, QuotaDimension, QuotaGrace, QuotaLimits, QuotaReport,
-};
+use crate::quota::model::{ActiveQuota, QuotaDimension, QuotaGrace, QuotaLimits, QuotaSnapshot};
 use std::ffi::{CString, OsString};
 use std::os::unix::ffi::{OsStrExt, OsStringExt};
 use std::path::{Path, PathBuf};
@@ -25,7 +23,7 @@ struct QueryResult {
     inodes: QuotaDimension,
 }
 
-pub(super) fn probe(path: &Path) -> Result<QuotaReport, ProbeError> {
+pub(super) fn probe(path: &Path) -> Result<QuotaSnapshot, ProbeError> {
     let mount = inspect_mount(path)?;
     // SAFETY: geteuid has no preconditions and does not mutate process state.
     let subject_id = unsafe { libc::geteuid() };
@@ -36,10 +34,10 @@ pub(super) fn probe(path: &Path) -> Result<QuotaReport, ProbeError> {
     }
 }
 
-fn probe_vfs(mount: MountInfo, path: &Path, subject_id: u32) -> Result<QuotaReport, ProbeError> {
+fn probe_vfs(mount: MountInfo, path: &Path, subject_id: u32) -> Result<QuotaSnapshot, ProbeError> {
     let result = query_current_user(&mount, subject_id)?;
     let scope = mount.scope(path);
-    Ok(QuotaReport::active(
+    Ok(QuotaSnapshot::active(
         scope,
         subject_id,
         ActiveQuota {
@@ -225,7 +223,7 @@ mod tests {
     use super::{
         MountInfo, ProbeError, QueryResult, classify_error, incomplete, normalize, parse_mountinfo,
     };
-    use crate::commands::quota::model::QuotaGraceState;
+    use crate::quota::model::QuotaGraceState;
     use std::path::{Path, PathBuf};
 
     #[test]
diff --git a/crates/degu/src/commands/quota/platform/linux/lustre.rs b/crates/degu/src/quota/platform/linux/lustre.rs
similarity index 99%
rename from crates/degu/src/commands/quota/platform/linux/lustre.rs
rename to crates/degu/src/quota/platform/linux/lustre.rs
index 76cfc5c..d2df2b9 100644
--- a/crates/degu/src/commands/quota/platform/linux/lustre.rs
+++ b/crates/degu/src/quota/platform/linux/lustre.rs
@@ -18,8 +18,8 @@
 //! a number it could not verify.
 
 use super::{MountInfo, ProbeError};
-use crate::commands::quota::model::{
-    ActiveQuota, QuotaDimension, QuotaGrace, QuotaGraceState, QuotaLimits, QuotaReport,
+use crate::quota::model::{
+    ActiveQuota, QuotaDimension, QuotaGrace, QuotaGraceState, QuotaLimits, QuotaSnapshot,
 };
 use std::io::Read;
 use std::os::unix::ffi::OsStrExt;
@@ -116,7 +116,7 @@ pub(super) fn probe(
     mount: MountInfo,
     path: &Path,
     subject_id: u32,
-) -> Result<QuotaReport, ProbeError> {
+) -> Result<QuotaSnapshot, ProbeError> {
     require_rooted_mount_point(&mount)?;
     verify_statfs_is_lustre(&mount)?;
     let execution = capture(Path::new(LFS_BINARY), &mount, subject_id, LFS_TIMEOUT)?;
@@ -128,7 +128,7 @@ pub(super) fn probe(
     let parsed = parse(&stdout, &mount.mount_point, subject_id, observed_at_unix)
         .map_err(|reason| super::incomplete(&mount, reason))?;
     let scope = mount.scope(path);
-    Ok(QuotaReport::active(
+    Ok(QuotaSnapshot::active(
         scope,
         subject_id,
         ActiveQuota {
diff --git a/crates/degu/src/commands/quota/platform/macos.rs b/crates/degu/src/quota/platform/macos.rs
similarity index 93%
rename from crates/degu/src/commands/quota/platform/macos.rs
rename to crates/degu/src/quota/platform/macos.rs
index 91a9fd3..002ee4f 100644
--- a/crates/degu/src/commands/quota/platform/macos.rs
+++ b/crates/degu/src/quota/platform/macos.rs
@@ -1,11 +1,11 @@
 use super::{MountInfo, ProbeError};
-use crate::commands::quota::model::QuotaReport;
+use crate::quota::model::QuotaSnapshot;
 use std::ffi::CString;
 use std::mem::MaybeUninit;
 use std::os::unix::ffi::OsStrExt;
 use std::path::{Path, PathBuf};
 
-pub(super) fn probe(path: &Path) -> Result<QuotaReport, ProbeError> {
+pub(super) fn probe(path: &Path) -> Result<QuotaSnapshot, ProbeError> {
     let mount = inspect_mount(path)?;
     Err(ProbeError::Unsupported {
         filesystem: mount.filesystem,