Fix Cursor notifications, sub-agent toggle, Codex events, rename Channels

- AgentTrackingManager: Skip isQuitInitiatedEnd check for IDE agents
  (cursor, vscode, windsurf). Cursor launches dc-hook via a transient
  shell subprocess whose PPID exits immediately, causing false
  isQuitInitiatedEnd=true and suppressing all notifications.

- ChannelStore: Unify sub-agent toggle — 'subagentEnd' now reads the
  same subagentStart flag so one UI toggle covers both start and end.

- AgentInstallerV2: Add PreCompact and PostCompact to Codex CLI event
  list (now 8 events, matching openai/codex source).

- AgentEventNormalizer: Map PreCompact/PostCompact → .other for Codex.

- ConfigureAgentsWindowV2: Rename sidebar label 'Channels' →
  'Notification Channels' for clearer UX.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: katipally

DoomCoder/AgentTracking/AgentEventNormalizer.swift

@@ -467,6 +467,8 @@ struct CodexCLIEventNormalizer: AgentEventNormalizer {
         "PostToolUse":        .toolEnd,
         "PermissionRequest":  .permissionNeeded,
         "Stop":               .sessionEnd,
+        "PreCompact":         .other,
+        "PostCompact":        .other,
     ]
 
     func normalize(envelope: HookEnvelope) -> NormalizedHookEvent? {

DoomCoder/AgentTracking/AgentInstallerV2.swift

@@ -568,9 +568,13 @@ struct AgentInstallerV2 {
 
     // OpenAI Codex CLI hook events (May 2026). Requires `codex_hooks = true`
     // feature flag in ~/.codex/config.toml.
+    // OpenAI Codex CLI hook events (May 2026). Requires `codex_hooks = true`
+    // feature flag in ~/.codex/config.toml.
+    // Source: openai/codex codex-rs/app-server-protocol/src/protocol/v2/hook.rs
     static let codexEvents = [
         "SessionStart", "PreToolUse", "PermissionRequest",
-        "PostToolUse", "UserPromptSubmit", "Stop"
+        "PostToolUse", "UserPromptSubmit", "Stop",
+        "PreCompact", "PostCompact"
     ]
 
     private static func cmdFor(_ agent: String, _ event: String) -> String {

DoomCoder/AgentTracking/AgentTrackingManager.swift

@@ -244,7 +244,16 @@ final class AgentTrackingManager {
         // Suppress sessionEnd notifications when the agent PID is dead — this
         // means the user already quit (Cmd+Q) before the final Stop/sessionEnd
         // hook arrived. Timeline entry is still recorded above.
+        //
+        // IDE agents (Cursor, VS Code Copilot, Windsurf) are exempt from this
+        // check because they invoke dc-hook via a short-lived shell subprocess.
+        // dc-hook reports getppid() (the shell), which exits immediately after
+        // dc-hook starts — so PIDLiveness always returns false for IDE-spawned
+        // hooks, which would incorrectly suppress every session-end notification.
+        // CLI agents (Claude, Copilot CLI, Codex) spawn dc-hook directly, so
+        // getppid() is the CLI process itself, which is alive until Cmd+Q.
         let isQuitInitiatedEnd = normalized.phase == .sessionEnd
+            && !normalized.agent.isIDEAgent
             && !PIDLiveness.isAlive(pid_t(env.pid))
         let shouldNotify = NotificationPolicy.isNotifiable(phase: normalized.phase)
             && !isQuitInitiatedEnd

DoomCoder/AgentTracking/ChannelStore.swift

@@ -29,8 +29,8 @@ struct ChannelStore {
             case "error", "toolError": return error
             case "permissionNeeded":  return permissionNeeded
             case "agentResponse":     return agentResponse
-            case "subagentStart":     return subagentStart
-            case "subagentEnd":       return subagentEnd
+            // "Sub-agent activity" toggle controls both start and end phases.
+            case "subagentStart", "subagentEnd": return subagentStart
             case "toolStart", "toolEnd": return toolUse
             default:                  return false
             }

DoomCoder/AgentTracking/ConfigureAgentsWindowV2.swift

@@ -122,7 +122,7 @@ struct ConfigureAgentsViewV2: View {
                         selected = nil
                     }
                 } label: {
-                    Label("Channels", systemImage: "bell.badge")
+                    Label("Notification Channels", systemImage: "bell.badge")
                 }
                 .buttonStyle(.plain)
                 .listRowBackground(tab == .channels ? Color.accentColor.opacity(0.15) : Color.clear)