merge: panel role session registry

crates/tui/src/lib.rs

@@ -8,6 +8,7 @@ mod markdown;
 mod multi_pod;
 mod picker;
 mod pod_list;
+mod role_session_registry;
 mod scroll;
 mod single_pod;
 mod spawn;

crates/tui/src/multi_pod.rs

@@ -1,11 +1,11 @@
 use std::io;
 use std::path::{Path, PathBuf};
-use std::time::{Duration, Instant};
+use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
 
 use client::ticket_role::{
-    TicketIntakeHandoff, TicketRole, TicketRoleLaunchContext, TicketRoleLaunchError,
+    TicketIntakeHandoff, TicketRef, TicketRole, TicketRoleLaunchContext, TicketRoleLaunchError,
     TicketRoleLaunchOptions, TicketRoleLaunchResult, launch_ticket_role_pod,
-    launch_ticket_role_pod_with_options,
+    launch_ticket_role_pod_with_options, plan_ticket_role_launch,
 };
 use client::{PodRuntimeCommand, SpawnConfig, spawn_pod};
 use crossterm::event::{Event as TermEvent, KeyCode, KeyEvent, KeyModifiers, poll, read};
@@ -33,12 +33,16 @@ use crate::pod_list::{
     PodList, PodListEntry, PodVisibilitySource, StoredMetadataState, read_reachable_live_pod_infos,
     read_stored_pod_infos,
 };
+use crate::role_session_registry::{
+    PanelRegistryStore, RelatedTicketRef, RoleSessionOrigin, TicketClaimResult,
+};
 use crate::workspace_panel::{
     ActionPriority, ComposerTarget, NextUserAction, OrchestratorLifecyclePlan,
     OrchestratorPanelState, OrchestratorPanelStatus, OrchestratorPodPresence, PanelRow,
-    PanelRowKey, TicketConfigAvailability, WorkspacePanelViewModel, bounded_panel_diagnostic,
-    build_current_ticket_row, build_workspace_panel, decide_orchestrator_lifecycle,
-    orchestrator_pod_presence, ticket_config_availability, workspace_orchestrator_pod_name,
+    PanelRowKey, TicketConfigAvailability, TicketLocalClaimStatus, WorkspacePanelViewModel,
+    bounded_panel_diagnostic, build_current_ticket_row, build_workspace_panel,
+    decide_orchestrator_lifecycle, local_claim_status_for_pod, orchestrator_pod_presence,
+    ticket_config_availability, workspace_orchestrator_pod_name,
 };
 
 const MAX_ENTRIES: usize = 50;
@@ -258,6 +262,18 @@ pub(crate) struct IntakeLaunchRequest {
     context: TicketRoleLaunchContext,
     runtime_command: PodRuntimeCommand,
     peer_registration: IntakePeerRegistrationRequest,
+    registry_update: IntakeRegistryUpdate,
+}
+
+#[derive(Debug, Clone)]
+pub(crate) enum IntakeRegistryUpdate {
+    RecordSession {
+        registry_root: PathBuf,
+        pod_name: String,
+        origin: RoleSessionOrigin,
+        related_tickets: Vec<RelatedTicketRef>,
+    },
+    ClaimedTicket,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -270,6 +286,7 @@ pub(crate) enum IntakePeerRegistrationRequest {
 pub(crate) struct IntakeLaunchOutcome {
     launch: TicketRoleLaunchResult,
     peer_registration: IntakePeerRegistrationStatus,
+    registry_warning: Option<String>,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -311,6 +328,28 @@ pub(crate) async fn launch_intake_with_handoff(request: IntakeLaunchRequest) ->
         options,
     )
     .await?;
+    let registry_warning = match request.registry_update {
+        IntakeRegistryUpdate::RecordSession {
+            registry_root,
+            pod_name,
+            origin,
+            related_tickets,
+        } => PanelRegistryStore::from_root(registry_root)
+            .record_session(
+                pod_name,
+                TicketRole::Intake.as_str().to_string(),
+                origin,
+                None,
+                related_tickets,
+            )
+            .err()
+            .map(|error| {
+                bounded_panel_diagnostic(format!(
+                    "local role session registry could not be updated after Intake launch: {error}"
+                ))
+            }),
+        IntakeRegistryUpdate::ClaimedTicket => None,
+    };
     let peer_registration = match (orchestrator_pod, skip_warning) {
         (_, Some(warning)) => warning,
         (Some(orchestrator_pod), None) if launch.pre_run_warnings.is_empty() => {
@@ -331,6 +370,7 @@ pub(crate) async fn launch_intake_with_handoff(request: IntakeLaunchRequest) ->
     Ok(IntakeLaunchOutcome {
         launch,
         peer_registration,
+        registry_warning,
     })
 }
 
@@ -710,8 +750,37 @@ impl MultiPodApp {
         }
         let mut context =
             TicketRoleLaunchContext::new(current_workspace_root(), TicketRole::Intake);
+        let pod_name = unique_preticket_intake_pod_name();
+        context.pod_name = Some(pod_name.clone());
         context.user_instruction = Some(body);
-        let peer_registration = match self.panel.header.orchestrator.as_ref() {
+        let store = match PanelRegistryStore::default_for_workspace(&context.workspace_root) {
+            Ok(store) => store,
+            Err(error) => {
+                self.notice = Some(format!("Ticket Intake registry unavailable: {error}"));
+                return None;
+            }
+        };
+        let peer_registration = self.prepare_intake_peer_registration(&mut context);
+        self.sending = true;
+        self.notice = Some("Launching Ticket Intake…".to_string());
+        Some(IntakeLaunchRequest {
+            context,
+            runtime_command: self.runtime_command.clone(),
+            peer_registration,
+            registry_update: IntakeRegistryUpdate::RecordSession {
+                registry_root: store.root().to_path_buf(),
+                pod_name,
+                origin: RoleSessionOrigin::PreTicketIntake,
+                related_tickets: Vec::new(),
+            },
+        })
+    }
+
+    fn prepare_intake_peer_registration(
+        &self,
+        context: &mut TicketRoleLaunchContext,
+    ) -> IntakePeerRegistrationRequest {
+        match self.panel.header.orchestrator.as_ref() {
             Some(orchestrator) => {
                 context.intake_handoff = Some(TicketIntakeHandoff::new(
                     orchestrator.pod_name.clone(),
@@ -734,13 +803,104 @@ impl MultiPodApp {
             None => IntakePeerRegistrationRequest::Skip {
                 reason: "workspace Orchestrator is not configured for this panel".to_string(),
             },
+        }
+    }
+
+    pub(crate) fn prepare_existing_ticket_intake_launch(&mut self) -> Option<IntakeLaunchRequest> {
+        let row = match self.selected_panel_row() {
+            Some(row) if row.is_ticket_action() => row,
+            Some(row) if row.ticket.is_some() => {
+                self.notice = Some("Selected Ticket row has no Intake action.".to_string());
+                return None;
+            }
+            _ => {
+                self.notice = Some("No Ticket Intake action is selected.".to_string());
+                return None;
+            }
         };
+        let Some(action) = row.next_action else {
+            self.notice = Some("Selected Ticket row has no Intake action.".to_string());
+            return None;
+        };
+        if action != NextUserAction::Clarify {
+            self.notice = Some(format!(
+                "{} is not handled by Ticket Intake launch.",
+                action.label()
+            ));
+            return None;
+        }
+        let Some(ticket) = row.ticket.as_ref() else {
+            self.notice = Some("No Ticket Intake action is selected.".to_string());
+            return None;
+        };
+        let ticket_id = ticket.id.clone();
+        let ticket_slug = ticket.slug.clone();
+        let mut context =
+            TicketRoleLaunchContext::new(current_workspace_root(), TicketRole::Intake);
+        context.ticket = Some(TicketRef {
+            id: Some(ticket_id.clone()),
+            slug: Some(ticket_slug.clone()),
+        });
+        context.user_instruction = Some(format!(
+            "Continue Intake for existing Ticket {ticket_id} ({ticket_slug}). Do not create a duplicate Ticket unless the user explicitly requests one."
+        ));
+        let store = match PanelRegistryStore::default_for_workspace(&context.workspace_root) {
+            Ok(store) => store,
+            Err(error) => {
+                self.notice = Some(format!("Ticket Intake registry unavailable: {error}"));
+                return None;
+            }
+        };
+        match store.claim_for_ticket(&ticket_id) {
+            Ok(Some(claim)) => {
+                let status = local_claim_status_for_pod(&claim.pod_name, &self.list);
+                self.notice = Some(existing_ticket_claim_notice(
+                    &ticket_id,
+                    &claim.pod_name,
+                    status,
+                ));
+                return None;
+            }
+            Ok(None) => {}
+            Err(error) => {
+                self.notice = Some(format!("Ticket claim diagnostic required: {error}"));
+                return None;
+            }
+        }
+        let planned = match plan_ticket_role_launch(context.clone()) {
+            Ok(plan) => plan,
+            Err(error) => {
+                self.notice = Some(format!(
+                    "Ticket Intake launch plan failed; no claim written: {}",
+                    bounded_panel_diagnostic(error.to_string())
+                ));
+                return None;
+            }
+        };
+        context.pod_name = Some(planned.pod_name.clone());
+        match store.claim_ticket(
+            &ticket_id,
+            Some(&ticket_slug),
+            &planned.pod_name,
+            TicketRole::Intake.as_str(),
+        ) {
+            Ok(TicketClaimResult::Claimed) | Ok(TicketClaimResult::AlreadyOwned(_)) => {}
+            Err(error) => {
+                self.notice = Some(format!("Ticket claim diagnostic required: {error}"));
+                return None;
+            }
+        }
+        let peer_registration = self.prepare_intake_peer_registration(&mut context);
         self.sending = true;
-        self.notice = Some("Launching Ticket Intake…".to_string());
+        self.notice = Some(format!(
+            "Launching Ticket Intake for {} as {}…",
+            ticket_slug, planned.pod_name
+        ));
         Some(IntakeLaunchRequest {
             context,
             runtime_command: self.runtime_command.clone(),
             peer_registration,
+            registry_update: IntakeRegistryUpdate::ClaimedTicket,
         })
     }
 
@@ -758,8 +918,12 @@ impl MultiPodApp {
                         format!(" Handoff warning: {message}")
                     }
                 };
+                let registry_notice = result
+                    .registry_warning
+                    .map(|warning| format!(" Registry warning: {warning}"))
+                    .unwrap_or_default();
                 self.notice = Some(bounded_panel_diagnostic(format!(
-                    "Launched Ticket Intake Pod {pod_name}.{peer_notice}"
+                    "Launched Ticket Intake Pod {pod_name}.{peer_notice}{registry_notice}"
                 )));
             }
             Err(error) => {
@@ -804,6 +968,14 @@ impl MultiPodApp {
                 self.input.insert_newline();
                 MultiPodAction::None
             }
+            KeyCode::Enter
+                if self.composer_is_blank()
+                    && self.selected_ticket_action() == Some(NextUserAction::Clarify) =>
+            {
+                self.prepare_existing_ticket_intake_launch()
+                    .map(MultiPodAction::LaunchIntake)
+                    .unwrap_or(MultiPodAction::None)
+            }
             KeyCode::Enter
                 if self.composer_is_blank() && self.selected_ticket_action().is_some() =>
             {
@@ -1093,6 +1265,30 @@ fn orchestrator_status_is_peer_reachable(status: OrchestratorPanelStatus) -> boo
     )
 }
 
+fn unique_preticket_intake_pod_name() -> String {
+    let nanos = SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .map(|duration| duration.as_nanos())
+        .unwrap_or_default();
+    format!("ticket-intake-{nanos:x}")
+}
+
+fn existing_ticket_claim_notice(
+    ticket_id: &str,
+    pod_name: &str,
+    status: TicketLocalClaimStatus,
+) -> String {
+    match status {
+        TicketLocalClaimStatus::Live | TicketLocalClaimStatus::Restorable => format!(
+            "Ticket {ticket_id} is already claimed by local Intake Pod {pod_name} ({}); open that Pod instead of starting a second Intake.",
+            status.label()
+        ),
+        TicketLocalClaimStatus::Stale => format!(
+            "Ticket {ticket_id} has a stale local Intake claim for {pod_name}; explicit reclaim/diagnostic is required before starting a replacement."
+        ),
+    }
+}
+
 async fn load_exact_pod_presence(pod_name: &str) -> Result<OrchestratorPodPresence, MultiPodError> {
     let list = load_pod_list(Some(pod_name.to_string()), usize::MAX).await?;
     Ok(orchestrator_pod_presence(pod_name, &list))
@@ -3238,6 +3434,7 @@ mod tests {
             peer_registration: IntakePeerRegistrationStatus::Registered {
                 orchestrator_pod: "test-orchestrator".to_string(),
             },
+            registry_warning: None,
         }));
 
         assert!(!app.sending);
@@ -3357,6 +3554,7 @@ mod tests {
             latest_event_excerpt: Some("latest event stays out of the primary row".to_string()),
             blocked_reason: None,
             related_pods: Vec::new(),
+            local_claim: None,
         };
         PanelRow {
             key: PanelRowKey::Ticket(ticket.id.clone()),

crates/tui/src/role_session_registry.rs

@@ -0,0 +1,556 @@
+use std::collections::{BTreeMap, BTreeSet};
+use std::fs::{self, OpenOptions};
+use std::io;
+use std::path::{Path, PathBuf};
+use std::thread;
+use std::time::{Duration, SystemTime, UNIX_EPOCH};
+
+use serde::{Deserialize, Serialize};
+
+const REGISTRY_VERSION: u32 = 1;
+const REGISTRY_FILE: &str = "role-sessions.json";
+const REGISTRY_LOCK_FILE: &str = "role-sessions.lock";
+const CLAIMS_DIR: &str = "ticket-claims";
+
+#[derive(Debug, Clone)]
+pub(crate) struct PanelRegistryStore {
+    root: PathBuf,
+    workspace_root: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub(crate) struct RoleSessionRegistry {
+    pub version: u32,
+    pub workspace_root: String,
+    pub sessions: BTreeMap<String, RoleSessionRecord>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub(crate) struct RoleSessionRecord {
+    pub role: String,
+    pub pod_name: String,
+    pub origin: RoleSessionOrigin,
+    pub created_at: String,
+    pub updated_at: String,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub session_id: Option<String>,
+    #[serde(default)]
+    pub related_tickets: Vec<RelatedTicketRef>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub(crate) enum RoleSessionOrigin {
+    PreTicketIntake,
+    TicketClaim,
+    RoleLaunch,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+pub(crate) struct RelatedTicketRef {
+    pub id: String,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub slug: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub(crate) struct TicketClaim {
+    pub ticket_id: String,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub ticket_slug: Option<String>,
+    pub pod_name: String,
+    pub role: String,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub(crate) struct PanelRegistrySnapshot {
+    pub sessions: Vec<RoleSessionRecord>,
+    pub claims: Vec<TicketClaim>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub(crate) enum TicketClaimResult {
+    Claimed,
+    AlreadyOwned(TicketClaim),
+}
+
+#[derive(Debug)]
+pub(crate) enum PanelRegistryError {
+    Io(io::Error),
+    Json(serde_json::Error),
+    TicketAlreadyClaimed(TicketClaim),
+}
+
+impl std::fmt::Display for PanelRegistryError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Io(error) => write!(f, "local role session registry I/O error: {error}"),
+            Self::Json(error) => write!(f, "local role session registry JSON error: {error}"),
+            Self::TicketAlreadyClaimed(claim) => write!(
+                f,
+                "Ticket {} is already claimed locally by {} ({})",
+                claim.ticket_id, claim.pod_name, claim.role
+            ),
+        }
+    }
+}
+
+impl std::error::Error for PanelRegistryError {}
+
+impl From<io::Error> for PanelRegistryError {
+    fn from(error: io::Error) -> Self {
+        Self::Io(error)
+    }
+}
+
+impl From<serde_json::Error> for PanelRegistryError {
+    fn from(error: serde_json::Error) -> Self {
+        Self::Json(error)
+    }
+}
+
+impl PanelRegistryStore {
+    pub(crate) fn default_for_workspace(workspace_root: &Path) -> Result<Self, PanelRegistryError> {
+        let data_dir = manifest::paths::data_dir().ok_or_else(|| {
+            PanelRegistryError::Io(io::Error::other("failed to resolve yoi data directory"))
+        })?;
+        Ok(Self::for_data_dir(data_dir, workspace_root))
+    }
+
+    pub(crate) fn for_data_dir(data_dir: impl AsRef<Path>, workspace_root: &Path) -> Self {
+        let workspace_root = normalized_workspace_key(workspace_root);
+        let leaf = workspace_leaf(&workspace_root);
+        let digest = fnv1a64_hex(workspace_root.as_bytes());
+        Self {
+            root: data_dir
+                .as_ref()
+                .join("panel")
+                .join("workspaces")
+                .join(format!("{leaf}-{digest}")),
+            workspace_root: Some(workspace_root),
+        }
+    }
+
+    pub(crate) fn from_root(root: impl Into<PathBuf>) -> Self {
+        Self {
+            root: root.into(),
+            workspace_root: None,
+        }
+    }
+
+    pub(crate) fn root(&self) -> &Path {
+        &self.root
+    }
+
+    pub(crate) fn snapshot(&self) -> Result<PanelRegistrySnapshot, PanelRegistryError> {
+        let registry = self.load_registry()?;
+        let claims = self.load_claims()?;
+        Ok(PanelRegistrySnapshot {
+            sessions: registry.sessions.into_values().collect(),
+            claims,
+        })
+    }
+
+    pub(crate) fn load_registry(&self) -> Result<RoleSessionRegistry, PanelRegistryError> {
+        match fs::read(self.registry_path()) {
+            Ok(bytes) => Ok(serde_json::from_slice(&bytes)?),
+            Err(error) if error.kind() == io::ErrorKind::NotFound => Ok(RoleSessionRegistry {
+                version: REGISTRY_VERSION,
+                workspace_root: self.workspace_root.clone().unwrap_or_default(),
+                sessions: BTreeMap::new(),
+            }),
+            Err(error) => Err(error.into()),
+        }
+    }
+
+    pub(crate) fn record_session(
+        &self,
+        pod_name: impl Into<String>,
+        role: impl Into<String>,
+        origin: RoleSessionOrigin,
+        session_id: Option<String>,
+        related_tickets: impl IntoIterator<Item = RelatedTicketRef>,
+    ) -> Result<(), PanelRegistryError> {
+        let pod_name = pod_name.into();
+        let role = role.into();
+        let related_tickets: Vec<RelatedTicketRef> = related_tickets.into_iter().collect();
+        self.update_registry(|registry| {
+            let now = now_timestamp_string();
+            let mut tickets: BTreeSet<RelatedTicketRef> = registry
+                .sessions
+                .get(&pod_name)
+                .map(|record| record.related_tickets.iter().cloned().collect())
+                .unwrap_or_default();
+            tickets.extend(related_tickets);
+            let created_at = registry
+                .sessions
+                .get(&pod_name)
+                .map(|record| record.created_at.clone())
+                .unwrap_or_else(|| now.clone());
+            registry.sessions.insert(
+                pod_name.clone(),
+                RoleSessionRecord {
+                    role,
+                    pod_name,
+                    origin,
+                    created_at,
+                    updated_at: now,
+                    session_id,
+                    related_tickets: tickets.into_iter().collect(),
+                },
+            );
+            Ok(())
+        })
+    }
+
+    pub(crate) fn claim_ticket(
+        &self,
+        ticket_id: &str,
+        ticket_slug: Option<&str>,
+        pod_name: &str,
+        role: &str,
+    ) -> Result<TicketClaimResult, PanelRegistryError> {
+        fs::create_dir_all(self.claims_dir())?;
+        let claim_path = self.claim_path(ticket_id);
+        let claim = TicketClaim {
+            ticket_id: ticket_id.to_string(),
+            ticket_slug: ticket_slug.map(ToOwned::to_owned),
+            pod_name: pod_name.to_string(),
+            role: role.to_string(),
+        };
+        match self.create_claim_file(&claim_path, &claim) {
+            Ok(()) => {
+                if let Err(error) = self.record_session(
+                    pod_name.to_string(),
+                    role.to_string(),
+                    RoleSessionOrigin::TicketClaim,
+                    None,
+                    [RelatedTicketRef {
+                        id: ticket_id.to_string(),
+                        slug: ticket_slug.map(ToOwned::to_owned),
+                    }],
+                ) {
+                    let _ = fs::remove_file(&claim_path);
+                    return Err(error);
+                }
+                Ok(TicketClaimResult::Claimed)
+            }
+            Err(error) if error.kind() == io::ErrorKind::AlreadyExists => {
+                let existing = self.load_claim(ticket_id)?;
+                if existing.pod_name == pod_name && existing.role == role {
+                    Ok(TicketClaimResult::AlreadyOwned(existing))
+                } else {
+                    Err(PanelRegistryError::TicketAlreadyClaimed(existing))
+                }
+            }
+            Err(error) => Err(error.into()),
+        }
+    }
+
+    pub(crate) fn load_claim(&self, ticket_id: &str) -> Result<TicketClaim, PanelRegistryError> {
+        let bytes = fs::read(self.claim_path(ticket_id))?;
+        Ok(serde_json::from_slice(&bytes)?)
+    }
+
+    pub(crate) fn claim_for_ticket(
+        &self,
+        ticket_id: &str,
+    ) -> Result<Option<TicketClaim>, PanelRegistryError> {
+        match self.load_claim(ticket_id) {
+            Ok(claim) => Ok(Some(claim)),
+            Err(PanelRegistryError::Io(error)) if error.kind() == io::ErrorKind::NotFound => {
+                Ok(None)
+            }
+            Err(error) => Err(error),
+        }
+    }
+
+    fn update_registry(
+        &self,
+        update: impl FnOnce(&mut RoleSessionRegistry) -> Result<(), PanelRegistryError>,
+    ) -> Result<(), PanelRegistryError> {
+        fs::create_dir_all(&self.root)?;
+        let _lock = self.acquire_registry_lock()?;
+        let mut registry = self.load_registry()?;
+        registry.version = REGISTRY_VERSION;
+        if let Some(workspace_root) = self.workspace_root.as_ref() {
+            registry.workspace_root = workspace_root.clone();
+        }
+        update(&mut registry)?;
+        self.save_registry(&registry)
+    }
+
+    fn acquire_registry_lock(&self) -> Result<RegistryLockGuard, PanelRegistryError> {
+        let lock_path = self.root.join(REGISTRY_LOCK_FILE);
+        for _ in 0..50 {
+            match OpenOptions::new()
+                .write(true)
+                .create_new(true)
+                .open(&lock_path)
+            {
+                Ok(_) => return Ok(RegistryLockGuard { path: lock_path }),
+                Err(error) if error.kind() == io::ErrorKind::AlreadyExists => {
+                    thread::sleep(Duration::from_millis(10));
+                }
+                Err(error) => return Err(error.into()),
+            }
+        }
+        Err(PanelRegistryError::Io(io::Error::new(
+            io::ErrorKind::WouldBlock,
+            "timed out acquiring panel role session registry lock",
+        )))
+    }
+
+    fn save_registry(&self, registry: &RoleSessionRegistry) -> Result<(), PanelRegistryError> {
+        let path = self.registry_path();
+        let temp_path = path.with_extension(format!("json.{}.tmp", now_timestamp_string()));
+        let bytes = serde_json::to_vec_pretty(registry)?;
+        fs::write(&temp_path, [&bytes[..], b"\n"].concat())?;
+        fs::rename(temp_path, path)?;
+        Ok(())
+    }
+
+    fn create_claim_file(&self, claim_path: &Path, claim: &TicketClaim) -> io::Result<()> {
+        let temp_path = self
+            .claims_dir()
+            .join(format!(".{}.tmp", now_timestamp_string()));
+        let bytes = serde_json::to_vec_pretty(claim).map_err(io::Error::other)?;
+        fs::write(&temp_path, [&bytes[..], b"\n"].concat())?;
+        let link_result = fs::hard_link(&temp_path, claim_path);
+        let remove_result = fs::remove_file(&temp_path);
+        match (link_result, remove_result) {
+            (Ok(()), Ok(())) | (Ok(()), Err(_)) => Ok(()),
+            (Err(error), _) => Err(error),
+        }
+    }
+
+    fn load_claims(&self) -> Result<Vec<TicketClaim>, PanelRegistryError> {
+        let mut claims: Vec<TicketClaim> = Vec::new();
+        match fs::read_dir(self.claims_dir()) {
+            Ok(entries) => {
+                for entry in entries {
+                    let entry = entry?;
+                    if entry.file_type()?.is_file()
+                        && entry
+                            .path()
+                            .extension()
+                            .is_some_and(|extension| extension == "json")
+                    {
+                        let bytes = fs::read(entry.path())?;
+                        claims.push(serde_json::from_slice(&bytes)?);
+                    }
+                }
+            }
+            Err(error) if error.kind() == io::ErrorKind::NotFound => {}
+            Err(error) => return Err(error.into()),
+        }
+        claims.sort_by(|left, right| left.ticket_id.cmp(&right.ticket_id));
+        Ok(claims)
+    }
+
+    fn registry_path(&self) -> PathBuf {
+        self.root.join(REGISTRY_FILE)
+    }
+
+    fn claims_dir(&self) -> PathBuf {
+        self.root.join(CLAIMS_DIR)
+    }
+
+    fn claim_path(&self, ticket_id: &str) -> PathBuf {
+        self.claims_dir()
+            .join(format!("{}.json", encode_path_component(ticket_id)))
+    }
+}
+
+struct RegistryLockGuard {
+    path: PathBuf,
+}
+
+impl Drop for RegistryLockGuard {
+    fn drop(&mut self) {
+        let _ = fs::remove_file(&self.path);
+    }
+}
+
+impl PanelRegistrySnapshot {
+    pub(crate) fn empty() -> Self {
+        Self {
+            sessions: Vec::new(),
+            claims: Vec::new(),
+        }
+    }
+
+    pub(crate) fn claim_for_ticket(&self, ticket_id: &str) -> Option<&TicketClaim> {
+        self.claims
+            .iter()
+            .find(|claim| claim.ticket_id == ticket_id)
+    }
+}
+
+fn normalized_workspace_key(path: &Path) -> String {
+    path.to_string_lossy().replace('\\', "/")
+}
+
+fn workspace_leaf(workspace_root: &str) -> String {
+    let leaf = workspace_root
+        .rsplit('/')
+        .find(|part| !part.is_empty())
+        .unwrap_or("workspace");
+    let sanitized = leaf
+        .chars()
+        .map(|ch| {
+            if ch.is_ascii_alphanumeric() || matches!(ch, '-' | '_') {
+                ch
+            } else {
+                '-'
+            }
+        })
+        .collect::<String>()
+        .trim_matches('-')
+        .to_string();
+    if sanitized.is_empty() {
+        "workspace".to_string()
+    } else {
+        sanitized
+    }
+}
+
+fn fnv1a64_hex(bytes: &[u8]) -> String {
+    let mut hash = 0xcbf29ce484222325u64;
+    for byte in bytes {
+        hash ^= u64::from(*byte);
+        hash = hash.wrapping_mul(0x100000001b3);
+    }
+    format!("{hash:016x}")
+}
+
+fn encode_path_component(value: &str) -> String {
+    let mut encoded = String::with_capacity(value.len());
+    for byte in value.bytes() {
+        match byte {
+            b'a'..=b'z' | b'A'..=b'Z' | b'0'..=b'9' | b'-' | b'_' => encoded.push(byte as char),
+            _ => encoded.push_str(&format!("%{byte:02X}")),
+        }
+    }
+    encoded
+}
+
+fn now_timestamp_string() -> String {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .map(|duration| duration.as_nanos().to_string())
+        .unwrap_or_else(|_| "0".to_string())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tempfile::TempDir;
+
+    #[test]
+    fn registry_path_is_workspace_scoped_under_data_dir() {
+        let data_dir = TempDir::new().unwrap();
+        let store = PanelRegistryStore::for_data_dir(data_dir.path(), Path::new("/repo/yoi"));
+        let other = PanelRegistryStore::for_data_dir(data_dir.path(), Path::new("/repo/other"));
+
+        assert!(store.root().starts_with(data_dir.path()));
+        let root = store.root().to_string_lossy();
+        assert!(root.contains("panel/workspaces/yoi-"));
+        assert_ne!(store.root(), other.root());
+
+        store
+            .record_session(
+                "ticket-intake-preticket",
+                "intake",
+                RoleSessionOrigin::PreTicketIntake,
+                None,
+                [],
+            )
+            .unwrap();
+        assert_eq!(store.load_registry().unwrap().workspace_root, "/repo/yoi");
+    }
+
+    #[test]
+    fn claim_ticket_rejects_second_active_local_pod() {
+        let temp = TempDir::new().unwrap();
+        let store = PanelRegistryStore::from_root(temp.path().join("registry"));
+
+        assert!(matches!(
+            store.claim_ticket("T-1", Some("ticket-one"), "ticket-one-intake", "intake"),
+            Ok(TicketClaimResult::Claimed)
+        ));
+
+        let error = store
+            .claim_ticket("T-1", Some("ticket-one"), "ticket-two-intake", "intake")
+            .unwrap_err();
+        assert!(matches!(error, PanelRegistryError::TicketAlreadyClaimed(_)));
+        let claim = store.claim_for_ticket("T-1").unwrap().unwrap();
+        assert_eq!(claim.pod_name, "ticket-one-intake");
+        assert_eq!(claim.ticket_slug.as_deref(), Some("ticket-one"));
+    }
+
+    #[test]
+    fn intake_session_relation_is_not_one_to_one_with_tickets() {
+        let temp = TempDir::new().unwrap();
+        let store = PanelRegistryStore::from_root(temp.path().join("registry"));
+
+        store
+            .record_session(
+                "ticket-intake-preticket",
+                "intake",
+                RoleSessionOrigin::PreTicketIntake,
+                None,
+                [],
+            )
+            .unwrap();
+        store
+            .record_session(
+                "ticket-intake-shared",
+                "intake",
+                RoleSessionOrigin::RoleLaunch,
+                None,
+                [
+                    RelatedTicketRef {
+                        id: "T-1".to_string(),
+                        slug: Some("one".to_string()),
+                    },
+                    RelatedTicketRef {
+                        id: "T-2".to_string(),
+                        slug: Some("two".to_string()),
+                    },
+                ],
+            )
+            .unwrap();
+
+        let snapshot = store.snapshot().unwrap();
+        let preticket = snapshot
+            .sessions
+            .iter()
+            .find(|session| session.pod_name == "ticket-intake-preticket")
+            .unwrap();
+        let shared = snapshot
+            .sessions
+            .iter()
+            .find(|session| session.pod_name == "ticket-intake-shared")
+            .unwrap();
+
+        assert!(preticket.related_tickets.is_empty());
+        assert_eq!(shared.role, "intake");
+        assert_eq!(shared.origin, RoleSessionOrigin::RoleLaunch);
+        assert!(!shared.created_at.is_empty());
+        assert!(!shared.updated_at.is_empty());
+        assert_eq!(
+            shared.related_tickets,
+            vec![
+                RelatedTicketRef {
+                    id: "T-1".to_string(),
+                    slug: Some("one".to_string()),
+                },
+                RelatedTicketRef {
+                    id: "T-2".to_string(),
+                    slug: Some("two".to_string()),
+                },
+            ]
+        );
+    }
+}

crates/tui/src/workspace_panel.rs

@@ -8,6 +8,7 @@ use ticket::{
 };
 
 use crate::pod_list::{PodList, PodListEntry, StoredMetadataState};
+use crate::role_session_registry::{PanelRegistrySnapshot, PanelRegistryStore};
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub(crate) struct WorkspacePanelViewModel {
@@ -200,6 +201,31 @@ pub(crate) struct TicketPanelEntry {
     pub(crate) latest_event_excerpt: Option<String>,
     pub(crate) blocked_reason: Option<String>,
     pub(crate) related_pods: Vec<String>,
+    pub(crate) local_claim: Option<TicketLocalClaimEntry>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub(crate) struct TicketLocalClaimEntry {
+    pub(crate) pod_name: String,
+    pub(crate) role: String,
+    pub(crate) status: TicketLocalClaimStatus,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub(crate) enum TicketLocalClaimStatus {
+    Live,
+    Restorable,
+    Stale,
+}
+
+impl TicketLocalClaimStatus {
+    pub(crate) fn label(self) -> &'static str {
+        match self {
+            Self::Live => "live",
+            Self::Restorable => "restorable",
+            Self::Stale => "stale",
+        }
+    }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -371,7 +397,44 @@ pub(crate) fn build_workspace_panel(
     workspace_root: &Path,
     pods: &PodList,
 ) -> WorkspacePanelViewModel {
-    let mut model = WorkspacePanelViewModel::empty(workspace_root);
+    let registry = match PanelRegistryStore::default_for_workspace(workspace_root)
+        .and_then(|store| store.snapshot())
+    {
+        Ok(snapshot) => snapshot,
+        Err(error) => {
+            let mut model = WorkspacePanelViewModel::empty(workspace_root);
+            model
+                .header
+                .diagnostics
+                .push(bounded_panel_diagnostic(format!(
+                    "Panel local role registry unavailable: {error}"
+                )));
+            return build_workspace_panel_with_registry_model(
+                model,
+                workspace_root,
+                pods,
+                &PanelRegistrySnapshot::empty(),
+            );
+        }
+    };
+    build_workspace_panel_with_registry(workspace_root, pods, &registry)
+}
+
+fn build_workspace_panel_with_registry(
+    workspace_root: &Path,
+    pods: &PodList,
+    registry: &PanelRegistrySnapshot,
+) -> WorkspacePanelViewModel {
+    let model = WorkspacePanelViewModel::empty(workspace_root);
+    build_workspace_panel_with_registry_model(model, workspace_root, pods, registry)
+}
+
+fn build_workspace_panel_with_registry_model(
+    mut model: WorkspacePanelViewModel,
+    workspace_root: &Path,
+    pods: &PodList,
+    registry: &PanelRegistrySnapshot,
+) -> WorkspacePanelViewModel {
     match ticket_config_availability(workspace_root) {
         TicketConfigAvailability::Absent => {}
         TicketConfigAvailability::Usable => {
@@ -381,7 +444,7 @@ pub(crate) fn build_workspace_panel(
                 Ok(config) => {
                     model.header.ticket_root = config.backend_root().to_path_buf();
                     let backend = LocalTicketBackend::new(config.backend_root().to_path_buf());
-                    match build_ticket_rows(&backend, pods) {
+                    match build_ticket_rows(&backend, pods, registry) {
                         Ok(rows) => model.rows.extend(rows),
                         Err(error) => {
                             model
@@ -434,7 +497,8 @@ pub(crate) fn build_current_ticket_row(
         )));
     }
     let summary = ticket_summary_from_meta(&ticket.meta);
-    Ok(ticket_row(summary, &ticket.events, pods))
+    let registry = PanelRegistrySnapshot::empty();
+    Ok(ticket_row(summary, &ticket.events, pods, &registry))
 }
 
 fn ticket_summary_from_meta(meta: &TicketMeta) -> TicketSummary {
@@ -461,6 +525,7 @@ fn ticket_summary_from_meta(meta: &TicketMeta) -> TicketSummary {
 fn build_ticket_rows(
     backend: &LocalTicketBackend,
     pods: &PodList,
+    registry: &PanelRegistrySnapshot,
 ) -> ticket::Result<Vec<PanelRow>> {
     let mut rows = Vec::new();
     for summary in backend.list(TicketFilter::all())? {
@@ -468,13 +533,19 @@ fn build_ticket_rows(
             continue;
         }
         let ticket = backend.show(TicketIdOrSlug::Query(summary.slug.clone()))?;
-        rows.push(ticket_row(summary, &ticket.events, pods));
+        rows.push(ticket_row(summary, &ticket.events, pods, registry));
     }
     Ok(rows)
 }
 
-fn ticket_row(summary: TicketSummary, events: &[TicketEvent], pods: &PodList) -> PanelRow {
-    let related_pods = related_pods_for_ticket(&summary, pods);
+fn ticket_row(
+    summary: TicketSummary,
+    events: &[TicketEvent],
+    pods: &PodList,
+    registry: &PanelRegistrySnapshot,
+) -> PanelRow {
+    let local_claim = local_claim_for_ticket(&summary, pods, registry);
+    let related_pods = related_pods_for_ticket(&summary, pods, registry);
     let derived = derive_ticket_state(&summary);
     let latest_event = events.last();
     let entry = TicketPanelEntry {
@@ -494,6 +565,7 @@ fn ticket_row(summary: TicketSummary, events: &[TicketEvent], pods: &PodList) ->
         latest_event_excerpt: latest_event.and_then(|event| excerpt(event.body.as_str(), 72)),
         blocked_reason: derived.blocked_reason.clone(),
         related_pods: related_pods.clone(),
+        local_claim,
     };
     let subtitle = ticket_subtitle(&entry);
     PanelRow {
@@ -608,22 +680,60 @@ fn derive_ticket_state(summary: &TicketSummary) -> DerivedTicketState {
     }
 }
 
-fn related_pods_for_ticket(summary: &TicketSummary, pods: &PodList) -> Vec<String> {
+fn related_pods_for_ticket(
+    summary: &TicketSummary,
+    pods: &PodList,
+    registry: &PanelRegistrySnapshot,
+) -> Vec<String> {
     let slug = lowercase(&summary.slug);
     let id = lowercase(&summary.id);
-    pods.entries
-        .iter()
-        .filter_map(|pod| {
-            let name = lowercase(&pod.name);
-            if (!slug.is_empty() && name.contains(&slug)) || (!id.is_empty() && name.contains(&id))
-            {
-                Some(pod.name.clone())
-            } else {
-                None
-            }
-        })
-        .take(5)
-        .collect()
+    let mut names = Vec::new();
+    if let Some(claim) = registry.claim_for_ticket(&summary.id) {
+        names.push(claim.pod_name.clone());
+    }
+    for pod in pods.entries.iter().filter_map(|pod| {
+        let name = lowercase(&pod.name);
+        if (!slug.is_empty() && name.contains(&slug)) || (!id.is_empty() && name.contains(&id)) {
+            Some(pod.name.clone())
+        } else {
+            None
+        }
+    }) {
+        if !names.iter().any(|existing| existing == &pod) {
+            names.push(pod);
+        }
+        if names.len() >= 5 {
+            break;
+        }
+    }
+    names
+}
+
+fn local_claim_for_ticket(
+    summary: &TicketSummary,
+    pods: &PodList,
+    registry: &PanelRegistrySnapshot,
+) -> Option<TicketLocalClaimEntry> {
+    let claim = registry.claim_for_ticket(&summary.id)?;
+    let status = local_claim_status_for_pod(&claim.pod_name, pods);
+    Some(TicketLocalClaimEntry {
+        pod_name: claim.pod_name.clone(),
+        role: claim.role.clone(),
+        status,
+    })
+}
+
+pub(crate) fn local_claim_status_for_pod(pod_name: &str, pods: &PodList) -> TicketLocalClaimStatus {
+    let Some(entry) = pods.entries.iter().find(|entry| entry.name == pod_name) else {
+        return TicketLocalClaimStatus::Stale;
+    };
+    if entry.live.as_ref().is_some_and(|live| live.reachable) {
+        return TicketLocalClaimStatus::Live;
+    }
+    if entry.actions.can_restore {
+        return TicketLocalClaimStatus::Restorable;
+    }
+    TicketLocalClaimStatus::Stale
 }
 
 fn ticket_subtitle(entry: &TicketPanelEntry) -> Option<String> {
@@ -635,6 +745,13 @@ fn ticket_subtitle(entry: &TicketPanelEntry) -> Option<String> {
     if let Some(reason) = entry.attention_required.as_deref() {
         parts.push(format!("attention: {reason}"));
     }
+    if let Some(claim) = entry.local_claim.as_ref() {
+        parts.push(format!(
+            "claim: {} ({})",
+            claim.pod_name,
+            claim.status.label()
+        ));
+    }
     if !entry.related_pods.is_empty() {
         parts.push(format!("pods: {}", entry.related_pods.join(", ")));
     }
@@ -942,6 +1059,42 @@ mod tests {
         assert_eq!(done.next_action, Some(NextUserAction::Close));
     }
 
+    #[test]
+    fn workspace_panel_displays_local_ticket_claim_status() {
+        let temp = TempDir::new().unwrap();
+        write_ticket_config(temp.path());
+        let backend = LocalTicketBackend::new(temp.path().join(".yoi/tickets"));
+        create_ticket(&backend, "Claimed Intake", "claimed-intake", |_| {});
+        let summary = backend.list(TicketFilter::all()).unwrap().remove(0);
+        let store = PanelRegistryStore::from_root(temp.path().join("local-registry"));
+        store
+            .claim_ticket(&summary.id, None, "ticket-claimed-intake", "intake")
+            .unwrap();
+        let registry = store.snapshot().unwrap();
+
+        let model = build_workspace_panel_with_registry(
+            temp.path(),
+            &live_pods(&["ticket-claimed-intake"]),
+            &registry,
+        );
+        let row = model
+            .rows
+            .iter()
+            .find(|row| row.title == "Claimed Intake")
+            .unwrap();
+        let claim = row.ticket.as_ref().unwrap().local_claim.as_ref().unwrap();
+
+        assert_eq!(claim.pod_name, "ticket-claimed-intake");
+        assert_eq!(claim.status, TicketLocalClaimStatus::Live);
+        assert_eq!(row.related_pods, vec!["ticket-claimed-intake"]);
+        assert!(
+            row.subtitle
+                .as_deref()
+                .unwrap()
+                .contains("claim: ticket-claimed-intake (live)")
+        );
+    }
+
     #[test]
     fn workspace_orchestrator_pod_name_is_stable_and_safe() {
         assert_eq!(