diff --git a/plugins/codebuddy-hud/src/config.ts b/plugins/codebuddy-hud/src/config.ts
index 2daecc9..d8262ef 100644
--- a/plugins/codebuddy-hud/src/config.ts
+++ b/plugins/codebuddy-hud/src/config.ts
@@ -19,6 +19,7 @@ export const DEFAULT_CONFIG: HudConfig = {
     tasks: false,
     contextUsage: true,
     contextValues: false,
+    sessionId: false,
   },
   colors: {
     model: 'blue',
diff --git a/plugins/codebuddy-hud/src/render/identity.ts b/plugins/codebuddy-hud/src/render/identity.ts
index 6e56287..91780a1 100644
--- a/plugins/codebuddy-hud/src/render/identity.ts
+++ b/plugins/codebuddy-hud/src/render/identity.ts
@@ -1,9 +1,9 @@
 import type { RenderContext } from '../types.js';
-import { getModelName, getProjectPath, getVersion } from '../stdin.js';
-import { colorize } from './colors.js';
+import { getModelName, getProjectPath, getVersion, getSessionId } from '../stdin.js';
+import { colorize, dim } from './colors.js';
 
 export function renderIdentityLine(ctx: RenderContext): string | null {
-  const { config, stdin, gitStatus } = ctx;
+  const { config, stdin, gitStatus, transcript } = ctx;
   const { display, colors } = config;
 
   const parts: string[] = [];
@@ -32,6 +32,18 @@ export function renderIdentityLine(ctx: RenderContext): string | null {
     }
   }
 
+  if (display.sessionId) {
+    const sessionName = transcript?.sessionName;
+    if (sessionName) {
+      parts.push(colorize(sessionName, 'brightCyan'));
+    } else {
+      const sid = getSessionId(stdin);
+      if (sid) {
+        parts.push(dim(`#${sid}`));
+      }
+    }
+  }
+
   if (parts.length === 0) return null;
 
   return parts.join(' | ');
diff --git a/plugins/codebuddy-hud/src/render/index.ts b/plugins/codebuddy-hud/src/render/index.ts
index 0e3be15..6e4d1b1 100644
--- a/plugins/codebuddy-hud/src/render/index.ts
+++ b/plugins/codebuddy-hud/src/render/index.ts
@@ -3,8 +3,8 @@ import { renderIdentityLine } from './identity.js';
 import { renderStatsLine, renderContextBar } from './stats.js';
 import { renderActivityLine } from './activity.js';
 import { getTerminalWidth, wrapLineToWidth } from './width.js';
-import { getModelName, getProjectPath } from '../stdin.js';
-import { colorize } from './colors.js';
+import { getModelName, getProjectPath, getSessionId } from '../stdin.js';
+import { colorize, dim } from './colors.js';
 
 const RESET = '\x1b[0m';
 
@@ -52,6 +52,11 @@ function renderCompact(ctx: RenderContext): string[] {
     if (ver) parts.push(`v${ver}`);
   }
 
+  if (display.sessionId) {
+    const sid = getSessionId(stdin);
+    if (sid) parts.push(dim(`#${sid}`));
+  }
+
   // Stats (without context, since it's already shown above)
   const stats = renderStatsLine(ctx, { includeContext: false });
   if (stats) parts.push(stats);
diff --git a/plugins/codebuddy-hud/src/stdin.ts b/plugins/codebuddy-hud/src/stdin.ts
index 24017ee..1bc8d01 100644
--- a/plugins/codebuddy-hud/src/stdin.ts
+++ b/plugins/codebuddy-hud/src/stdin.ts
@@ -82,3 +82,9 @@ export function getContextWindow(stdin: Partial<StdinData>): ContextWindowInfo {
 export function getVersion(stdin: Partial<StdinData>): string | null {
   return stdin.version ?? null;
 }
+
+export function getSessionId(stdin: Partial<StdinData>, length = 8): string | null {
+  const id = stdin.session_id ?? null;
+  if (!id) return null;
+  return id.slice(0, length);
+}
diff --git a/plugins/codebuddy-hud/src/transcript.ts b/plugins/codebuddy-hud/src/transcript.ts
index e6466f8..f662fd9 100644
--- a/plugins/codebuddy-hud/src/transcript.ts
+++ b/plugins/codebuddy-hud/src/transcript.ts
@@ -6,7 +6,14 @@ import * as os from 'node:os';
 import type { TranscriptData, ToolEntry, AgentEntry, TaskItem } from './types.js';
 
 interface TranscriptLine {
+  type?: string;
   timestamp?: string;
+  aiTitle?: string;
+  customTitle?: string;
+  callId?: string;
+  name?: string;
+  arguments?: string;
+  isError?: boolean;
   message?: {
     content?: ContentBlock[];
   };
@@ -44,6 +51,7 @@ interface CacheFile {
     agents: SerializedAgentEntry[];
     tasks: TaskItem[];
     sessionStart?: string;
+    sessionName?: string;
   };
 }
 
@@ -88,6 +96,7 @@ function readCache(transcriptPath: string, state: FileState): TranscriptData | n
       })),
       tasks: cached.data.tasks,
       sessionStart: cached.data.sessionStart ? new Date(cached.data.sessionStart) : undefined,
+      sessionName: cached.data.sessionName,
     };
   } catch {
     return null;
@@ -113,6 +122,7 @@ function writeCache(transcriptPath: string, state: FileState, data: TranscriptDa
         })),
         tasks: data.tasks,
         sessionStart: data.sessionStart?.toISOString(),
+        sessionName: data.sessionName,
       },
     };
     fs.writeFileSync(getCachePath(transcriptPath), JSON.stringify(payload), 'utf8');
@@ -175,6 +185,7 @@ export async function parseTranscript(transcriptPath: string): Promise<Transcrip
   const tasks: TaskItem[] = [];
   const taskIdToIndex = new Map<string, number>();
   let sessionStart: Date | undefined;
+  let sessionName: string | undefined;
   let parsedCleanly = false;
 
   try {
@@ -193,6 +204,83 @@ export async function parseTranscript(transcriptPath: string): Promise<Transcrip
           sessionStart = timestamp;
         }
 
+        // 提取 /rename 或 AI 自动生成的会话名称（取最新的）
+        if (entry.type === 'ai-title' && typeof entry.aiTitle === 'string' && entry.aiTitle) {
+          sessionName = entry.aiTitle;
+        }
+        if (entry.type === 'custom-title' && typeof entry.customTitle === 'string' && entry.customTitle) {
+          sessionName = entry.customTitle;
+        }
+
+        // CodeBuddy Code format: top-level function_call / function_call_result entries
+        if (entry.type === 'function_call' && entry.callId && entry.name) {
+          const input = entry.arguments
+            ? (() => { try { return JSON.parse(entry.arguments) as Record<string, unknown>; } catch { return undefined; } })()
+            : undefined;
+          if (entry.name === 'Task') {
+            agentMap.set(entry.callId, {
+              id: entry.callId,
+              type: (input?.subagent_type as string) ?? 'unknown',
+              model: (input?.model as string) ?? undefined,
+              description: (input?.description as string) ?? undefined,
+              status: 'running',
+              startTime: timestamp,
+            });
+          } else if (entry.name === 'TaskCreate') {
+            const subject = typeof input?.subject === 'string' ? input.subject : '';
+            const description = typeof input?.description === 'string' ? input.description : '';
+            const taskContent = subject || description || 'Untitled task';
+            const status = normalizeTaskStatus(input?.status) ?? 'pending';
+            tasks.push({ content: taskContent, status });
+            const taskId = typeof input?.taskId === 'string' || typeof input?.taskId === 'number'
+              ? String(input.taskId)
+              : entry.callId;
+            taskIdToIndex.set(taskId, tasks.length - 1);
+          } else if (entry.name === 'TaskUpdate') {
+            const taskId = typeof input?.taskId === 'string' || typeof input?.taskId === 'number'
+              ? String(input.taskId)
+              : undefined;
+            if (taskId) {
+              let index = taskIdToIndex.get(taskId);
+              if (index === undefined && /^\d+$/.test(taskId)) {
+                const numIdx = parseInt(taskId, 10) - 1;
+                if (numIdx >= 0 && numIdx < tasks.length) index = numIdx;
+              }
+              if (index !== undefined) {
+                const newStatus = normalizeTaskStatus(input?.status);
+                if (newStatus) tasks[index].status = newStatus;
+                const newSubject = typeof input?.subject === 'string' ? input.subject : '';
+                const newDesc = typeof input?.description === 'string' ? input.description : '';
+                const newContent = newSubject || newDesc;
+                if (newContent) tasks[index].content = newContent;
+              }
+            }
+          } else {
+            toolMap.set(entry.callId, {
+              id: entry.callId,
+              name: entry.name,
+              target: extractTarget(entry.name, input),
+              status: 'running',
+              startTime: timestamp,
+            });
+          }
+          continue;
+        }
+
+        if (entry.type === 'function_call_result' && entry.callId) {
+          const tool = toolMap.get(entry.callId);
+          if (tool) {
+            tool.status = entry.isError ? 'error' : 'completed';
+            tool.endTime = timestamp;
+          }
+          const agent = agentMap.get(entry.callId);
+          if (agent) {
+            agent.status = 'completed';
+            agent.endTime = timestamp;
+          }
+          continue;
+        }
+
         const content = entry.message?.content;
         if (!content || !Array.isArray(content)) continue;
 
@@ -281,6 +369,7 @@ export async function parseTranscript(transcriptPath: string): Promise<Transcrip
     agents: Array.from(agentMap.values()).slice(-10),
     tasks,
     sessionStart,
+    sessionName,
   };
 
   if (parsedCleanly) {
diff --git a/plugins/codebuddy-hud/src/types.ts b/plugins/codebuddy-hud/src/types.ts
index 7e18774..9ca4ea4 100644
--- a/plugins/codebuddy-hud/src/types.ts
+++ b/plugins/codebuddy-hud/src/types.ts
@@ -67,6 +67,7 @@ export interface TranscriptData {
   agents: AgentEntry[];
   tasks: TaskItem[];
   sessionStart?: Date;
+  sessionName?: string;
 }
 
 export interface GitStatus {
@@ -92,6 +93,7 @@ export interface HudConfig {
     tasks: boolean;
     contextUsage: boolean;
     contextValues: boolean;
+    sessionId: boolean;
   };
   colors: {
     model: string;