diff --git a/src/cli/commands/mod.rs b/src/cli/commands/mod.rs
index d7a22f6..f83a35c 100644
--- a/src/cli/commands/mod.rs
+++ b/src/cli/commands/mod.rs
@@ -36,7 +36,7 @@ pub use list::{
     ListFilters, MrListFilters, NoteListFilters, open_issue_in_browser, open_mr_in_browser,
     print_list_issues, print_list_issues_json, print_list_mrs, print_list_mrs_json,
     print_list_notes, print_list_notes_csv, print_list_notes_json, print_list_notes_jsonl,
-    query_notes, run_list_issues, run_list_mrs,
+    query_issues, query_mrs, query_notes, run_list_issues, run_list_mrs,
 };
 pub use search::{
     SearchCliFilters, SearchResponse, print_search_results, print_search_results_json, run_search,
@@ -50,4 +50,7 @@ pub use sync::{SyncOptions, SyncResult, print_sync, print_sync_json, run_sync};
 pub use sync_status::{print_sync_status, print_sync_status_json, run_sync_status};
 pub use timeline::{TimelineParams, print_timeline, print_timeline_json_with_meta, run_timeline};
 pub use trace::{parse_trace_path, print_trace, print_trace_json};
-pub use who::{WhoRun, print_who_human, print_who_json, run_who};
+pub use who::{
+    WhoRun, half_life_decay, print_who_human, print_who_json, query_active, query_expert,
+    query_overlap, query_reviews, query_workload, run_who,
+};
diff --git a/src/cli/commands/who.rs b/src/cli/commands/who.rs
index c105685..0daa860 100644
--- a/src/cli/commands/who.rs
+++ b/src/cli/commands/who.rs
@@ -79,6 +79,15 @@ fn resolve_mode<'a>(args: &'a WhoArgs) -> Result<WhoMode<'a>> {
 }
 
 // ─── Result Types ────────────────────────────────────────────────────────────
+//
+// Shared result types live in core::who_types. Re-exported here for
+// backwards-compatible use within the CLI.
+
+pub use crate::core::who_types::{
+    ActiveDiscussion, ActiveResult, Expert, ExpertMrDetail, ExpertResult, OverlapResult,
+    OverlapUser, ReviewCategory, ReviewsResult, ScoreComponents, WhoResult, WorkloadDiscussion,
+    WorkloadIssue, WorkloadMr, WorkloadResult,
+};
 
 /// Top-level run result: carries resolved inputs + the mode-specific result.
 pub struct WhoRun {
@@ -98,166 +107,6 @@ pub struct WhoResolvedInput {
     pub limit: u16,
 }
 
-/// Top-level result enum -- one variant per mode.
-pub enum WhoResult {
-    Expert(ExpertResult),
-    Workload(WorkloadResult),
-    Reviews(ReviewsResult),
-    Active(ActiveResult),
-    Overlap(OverlapResult),
-}
-
-// --- Expert ---
-
-pub struct ExpertResult {
-    pub path_query: String,
-    /// "exact" or "prefix" -- how the path was matched in SQL.
-    pub path_match: String,
-    pub experts: Vec<Expert>,
-    pub truncated: bool,
-}
-
-pub struct Expert {
-    pub username: String,
-    pub score: i64,
-    /// Unrounded f64 score (only populated when explain_score is set).
-    pub score_raw: Option<f64>,
-    /// Per-component score breakdown (only populated when explain_score is set).
-    pub components: Option<ScoreComponents>,
-    pub review_mr_count: u32,
-    pub review_note_count: u32,
-    pub author_mr_count: u32,
-    pub last_seen_ms: i64,
-    /// Stable MR references like "group/project!123"
-    pub mr_refs: Vec<String>,
-    pub mr_refs_total: u32,
-    pub mr_refs_truncated: bool,
-    /// Per-MR detail breakdown (only populated when --detail is set)
-    pub details: Option<Vec<ExpertMrDetail>>,
-}
-
-/// Per-component score breakdown for explain mode.
-pub struct ScoreComponents {
-    pub author: f64,
-    pub reviewer_participated: f64,
-    pub reviewer_assigned: f64,
-    pub notes: f64,
-}
-
-#[derive(Clone)]
-pub struct ExpertMrDetail {
-    pub mr_ref: String,
-    pub title: String,
-    /// "R", "A", or "A+R"
-    pub role: String,
-    pub note_count: u32,
-    pub last_activity_ms: i64,
-}
-
-// --- Workload ---
-
-pub struct WorkloadResult {
-    pub username: String,
-    pub assigned_issues: Vec<WorkloadIssue>,
-    pub authored_mrs: Vec<WorkloadMr>,
-    pub reviewing_mrs: Vec<WorkloadMr>,
-    pub unresolved_discussions: Vec<WorkloadDiscussion>,
-    pub assigned_issues_truncated: bool,
-    pub authored_mrs_truncated: bool,
-    pub reviewing_mrs_truncated: bool,
-    pub unresolved_discussions_truncated: bool,
-}
-
-pub struct WorkloadIssue {
-    pub iid: i64,
-    /// Canonical reference: `group/project#iid`
-    pub ref_: String,
-    pub title: String,
-    pub project_path: String,
-    pub updated_at: i64,
-}
-
-pub struct WorkloadMr {
-    pub iid: i64,
-    /// Canonical reference: `group/project!iid`
-    pub ref_: String,
-    pub title: String,
-    pub draft: bool,
-    pub project_path: String,
-    pub author_username: Option<String>,
-    pub updated_at: i64,
-}
-
-pub struct WorkloadDiscussion {
-    pub entity_type: String,
-    pub entity_iid: i64,
-    /// Canonical reference: `group/project!iid` or `group/project#iid`
-    pub ref_: String,
-    pub entity_title: String,
-    pub project_path: String,
-    pub last_note_at: i64,
-}
-
-// --- Reviews ---
-
-pub struct ReviewsResult {
-    pub username: String,
-    pub total_diffnotes: u32,
-    pub categorized_count: u32,
-    pub mrs_reviewed: u32,
-    pub categories: Vec<ReviewCategory>,
-}
-
-pub struct ReviewCategory {
-    pub name: String,
-    pub count: u32,
-    pub percentage: f64,
-}
-
-// --- Active ---
-
-pub struct ActiveResult {
-    pub discussions: Vec<ActiveDiscussion>,
-    /// Count of unresolved discussions *within the time window*, not total across all time.
-    pub total_unresolved_in_window: u32,
-    pub truncated: bool,
-}
-
-pub struct ActiveDiscussion {
-    pub discussion_id: i64,
-    pub entity_type: String,
-    pub entity_iid: i64,
-    pub entity_title: String,
-    pub project_path: String,
-    pub last_note_at: i64,
-    pub note_count: u32,
-    pub participants: Vec<String>,
-    pub participants_total: u32,
-    pub participants_truncated: bool,
-}
-
-// --- Overlap ---
-
-pub struct OverlapResult {
-    pub path_query: String,
-    /// "exact" or "prefix" -- how the path was matched in SQL.
-    pub path_match: String,
-    pub users: Vec<OverlapUser>,
-    pub truncated: bool,
-}
-
-pub struct OverlapUser {
-    pub username: String,
-    pub author_touch_count: u32,
-    pub review_touch_count: u32,
-    pub touch_count: u32,
-    pub last_seen_at: i64,
-    /// Stable MR references like "group/project!123"
-    pub mr_refs: Vec<String>,
-    pub mr_refs_total: u32,
-    pub mr_refs_truncated: bool,
-}
-
 /// Maximum MR references to retain per user in output (shared across modes).
 const MAX_MR_REFS_PER_USER: usize = 50;
 
@@ -483,7 +332,7 @@ fn resolve_since_required(input: &str) -> Result<i64> {
 ///
 /// Returns `0.0` when `half_life_days` is zero (prevents division by zero).
 /// Negative elapsed values are clamped to zero (future events retain full weight).
-fn half_life_decay(elapsed_ms: i64, half_life_days: u32) -> f64 {
+pub fn half_life_decay(elapsed_ms: i64, half_life_days: u32) -> f64 {
     let days = (elapsed_ms as f64 / 86_400_000.0).max(0.0);
     let hl = f64::from(half_life_days);
     if hl <= 0.0 {
@@ -495,7 +344,7 @@ fn half_life_decay(elapsed_ms: i64, half_life_days: u32) -> f64 {
 // ─── Query: Expert Mode ─────────────────────────────────────────────────────
 
 #[allow(clippy::too_many_arguments)]
-fn query_expert(
+pub fn query_expert(
     conn: &Connection,
     path: &str,
     project_id: Option<i64>,
@@ -1150,7 +999,7 @@ fn query_expert_details(
 
 // ─── Query: Workload Mode ───────────────────────────────────────────────────
 
-fn query_workload(
+pub fn query_workload(
     conn: &Connection,
     username: &str,
     project_id: Option<i64>,
@@ -1336,7 +1185,7 @@ fn query_workload(
 
 // ─── Query: Reviews Mode ────────────────────────────────────────────────────
 
-fn query_reviews(
+pub fn query_reviews(
     conn: &Connection,
     username: &str,
     project_id: Option<i64>,
@@ -1432,7 +1281,7 @@ fn query_reviews(
         })
         .collect();
 
-    categories.sort_by(|a, b| b.count.cmp(&a.count));
+    categories.sort_by_key(|cat| std::cmp::Reverse(cat.count));
 
     Ok(ReviewsResult {
         username: username.to_string(),
@@ -1463,7 +1312,7 @@ fn normalize_review_prefix(raw: &str) -> String {
 
 // ─── Query: Active Mode ─────────────────────────────────────────────────────
 
-fn query_active(
+pub fn query_active(
     conn: &Connection,
     project_id: Option<i64>,
     since_ms: i64,
@@ -1686,7 +1535,7 @@ fn query_active(
 
 // ─── Query: Overlap Mode ────────────────────────────────────────────────────
 
-fn query_overlap(
+pub fn query_overlap(
     conn: &Connection,
     path: &str,
     project_id: Option<i64>,
diff --git a/src/core/mod.rs b/src/core/mod.rs
index 9bef0f6..2893c5c 100644
--- a/src/core/mod.rs
+++ b/src/core/mod.rs
@@ -22,6 +22,7 @@ pub mod timeline_collect;
 pub mod timeline_expand;
 pub mod timeline_seed;
 pub mod trace;
+pub mod who_types;
 
 pub use config::Config;
 pub use error::{LoreError, Result};
diff --git a/src/core/who_types.rs b/src/core/who_types.rs
new file mode 100644
index 0000000..03cf2ce
--- /dev/null
+++ b/src/core/who_types.rs
@@ -0,0 +1,180 @@
+//! Shared types for the `who` people-intelligence queries.
+//!
+//! These types are the data contract consumed by both the CLI renderer
+//! and the TUI view layer. They contain no CLI or rendering logic.
+
+// ─── Top-Level Result ────────────────────────────────────────────────────────
+
+/// Top-level result enum -- one variant per mode.
+#[derive(Debug)]
+pub enum WhoResult {
+    Expert(ExpertResult),
+    Workload(WorkloadResult),
+    Reviews(ReviewsResult),
+    Active(ActiveResult),
+    Overlap(OverlapResult),
+}
+
+// ─── Expert ──────────────────────────────────────────────────────────────────
+
+#[derive(Debug)]
+pub struct ExpertResult {
+    pub path_query: String,
+    /// "exact" or "prefix" -- how the path was matched in SQL.
+    pub path_match: String,
+    pub experts: Vec<Expert>,
+    pub truncated: bool,
+}
+
+#[derive(Debug)]
+pub struct Expert {
+    pub username: String,
+    pub score: i64,
+    /// Unrounded f64 score (only populated when explain_score is set).
+    pub score_raw: Option<f64>,
+    /// Per-component score breakdown (only populated when explain_score is set).
+    pub components: Option<ScoreComponents>,
+    pub review_mr_count: u32,
+    pub review_note_count: u32,
+    pub author_mr_count: u32,
+    pub last_seen_ms: i64,
+    /// Stable MR references like "group/project!123"
+    pub mr_refs: Vec<String>,
+    pub mr_refs_total: u32,
+    pub mr_refs_truncated: bool,
+    /// Per-MR detail breakdown (only populated when --detail is set)
+    pub details: Option<Vec<ExpertMrDetail>>,
+}
+
+/// Per-component score breakdown for explain mode.
+#[derive(Debug)]
+pub struct ScoreComponents {
+    pub author: f64,
+    pub reviewer_participated: f64,
+    pub reviewer_assigned: f64,
+    pub notes: f64,
+}
+
+#[derive(Debug, Clone)]
+pub struct ExpertMrDetail {
+    pub mr_ref: String,
+    pub title: String,
+    /// "R", "A", or "A+R"
+    pub role: String,
+    pub note_count: u32,
+    pub last_activity_ms: i64,
+}
+
+// ─── Workload ────────────────────────────────────────────────────────────────
+
+#[derive(Debug)]
+pub struct WorkloadResult {
+    pub username: String,
+    pub assigned_issues: Vec<WorkloadIssue>,
+    pub authored_mrs: Vec<WorkloadMr>,
+    pub reviewing_mrs: Vec<WorkloadMr>,
+    pub unresolved_discussions: Vec<WorkloadDiscussion>,
+    pub assigned_issues_truncated: bool,
+    pub authored_mrs_truncated: bool,
+    pub reviewing_mrs_truncated: bool,
+    pub unresolved_discussions_truncated: bool,
+}
+
+#[derive(Debug)]
+pub struct WorkloadIssue {
+    pub iid: i64,
+    /// Canonical reference: `group/project#iid`
+    pub ref_: String,
+    pub title: String,
+    pub project_path: String,
+    pub updated_at: i64,
+}
+
+#[derive(Debug)]
+pub struct WorkloadMr {
+    pub iid: i64,
+    /// Canonical reference: `group/project!iid`
+    pub ref_: String,
+    pub title: String,
+    pub draft: bool,
+    pub project_path: String,
+    pub author_username: Option<String>,
+    pub updated_at: i64,
+}
+
+#[derive(Debug)]
+pub struct WorkloadDiscussion {
+    pub entity_type: String,
+    pub entity_iid: i64,
+    /// Canonical reference: `group/project!iid` or `group/project#iid`
+    pub ref_: String,
+    pub entity_title: String,
+    pub project_path: String,
+    pub last_note_at: i64,
+}
+
+// ─── Reviews ─────────────────────────────────────────────────────────────────
+
+#[derive(Debug)]
+pub struct ReviewsResult {
+    pub username: String,
+    pub total_diffnotes: u32,
+    pub categorized_count: u32,
+    pub mrs_reviewed: u32,
+    pub categories: Vec<ReviewCategory>,
+}
+
+#[derive(Debug)]
+pub struct ReviewCategory {
+    pub name: String,
+    pub count: u32,
+    pub percentage: f64,
+}
+
+// ─── Active ──────────────────────────────────────────────────────────────────
+
+#[derive(Debug)]
+pub struct ActiveResult {
+    pub discussions: Vec<ActiveDiscussion>,
+    /// Count of unresolved discussions *within the time window*, not total across all time.
+    pub total_unresolved_in_window: u32,
+    pub truncated: bool,
+}
+
+#[derive(Debug)]
+pub struct ActiveDiscussion {
+    pub discussion_id: i64,
+    pub entity_type: String,
+    pub entity_iid: i64,
+    pub entity_title: String,
+    pub project_path: String,
+    pub last_note_at: i64,
+    pub note_count: u32,
+    pub participants: Vec<String>,
+    pub participants_total: u32,
+    pub participants_truncated: bool,
+}
+
+// ─── Overlap ─────────────────────────────────────────────────────────────────
+
+#[derive(Debug)]
+pub struct OverlapResult {
+    pub path_query: String,
+    /// "exact" or "prefix" -- how the path was matched in SQL.
+    pub path_match: String,
+    pub users: Vec<OverlapUser>,
+    pub truncated: bool,
+}
+
+#[derive(Debug)]
+pub struct OverlapUser {
+    pub username: String,
+    pub author_touch_count: u32,
+    pub review_touch_count: u32,
+    pub touch_count: u32,
+    pub last_seen_at: i64,
+    /// Stable MR references like "group/project!123"
+    pub mr_refs: Vec<String>,
+    pub mr_refs_total: u32,
+    pub mr_refs_truncated: bool,
+}