Release v3.9.11

Published from npm package build
Source: https://github.com/thedotmack/claude-mem-source

hook-templates/post-tool-use.js

@@ -13,11 +13,11 @@ import { fileURLToPath } from 'url';
 import { query } from '@anthropic-ai/claude-agent-sdk';
 import { renderToolMessage, HOOK_CONFIG } from './shared/hook-prompt-renderer.js';
 import { getProjectName } from './shared/path-resolver.js';
+import { initializeDatabase, getActiveStreamingSessionsForProject } from './shared/hook-helpers.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
-const SESSION_DIR = path.join(process.env.HOME || '', '.claude-mem', 'sessions');
 const HOOKS_LOG = path.join(process.env.HOME || '', '.claude-mem', 'logs', 'hooks.log');
 
 function debugLog(message, data = {}) {
@@ -61,15 +61,18 @@ process.stdin.on('end', async () => {
   console.log(JSON.stringify({ async: true, asyncTimeout: 180000 }));
 
   try {
-    // Load SDK session info
-    const sessionFile = path.join(SESSION_DIR, `${project}_streaming.json`);
-    if (!fs.existsSync(sessionFile)) {
+    // Load SDK session info from database
+    const db = initializeDatabase();
+
+    const sessions = getActiveStreamingSessionsForProject(db, project);
+    if (!sessions || sessions.length === 0) {
       debugLog('PostToolUse: No streaming session found', { project });
+      db.close();
       process.exit(0);
     }
 
-    const sessionData = JSON.parse(fs.readFileSync(sessionFile, 'utf8'));
-    const sdkSessionId = sessionData.sdkSessionId;
+    const sessionData = sessions[0];
+    const sdkSessionId = sessionData.sdk_session_id;
 
     // Convert tool response to string
     const toolResponseStr = typeof tool_response === 'string'
@@ -135,6 +138,9 @@ process.stdin.on('end', async () => {
     }
 
     debugLog('PostToolUse: SDK finished processing', { tool_name, sdkSessionId });
+
+    // Close database connection
+    db.close();
   } catch (error) {
     debugLog('PostToolUse: Error sending to SDK', { error: error.message });
   }

hook-templates/shared/hook-helpers.js

@@ -10,6 +10,9 @@
 import { spawn } from 'child_process';
 import { join, dirname } from 'path';
 import { fileURLToPath } from 'url';
+import Database from 'better-sqlite3';
+import os from 'os';
+import fs from 'fs';
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 
@@ -235,3 +238,193 @@ export function debugLog(message, data = {}) {
     console.error(`[${timestamp}] HOOK DEBUG: ${message}`, data);
   }
 }
+
+// =============================================================================
+// DATABASE HELPERS (inline SQL to avoid 'claude-mem' import issues)
+// =============================================================================
+
+/**
+ * Get the claude-mem data directory path
+ */
+function getDataDirectory() {
+  return join(os.homedir(), '.claude-mem');
+}
+
+/**
+ * Get or create the database connection
+ */
+function getDatabase() {
+  const dataDir = getDataDirectory();
+  const dbPath = join(dataDir, 'claude-mem.db');
+
+  // Ensure directory exists
+  if (!fs.existsSync(dataDir)) {
+    fs.mkdirSync(dataDir, { recursive: true });
+  }
+
+  const db = new Database(dbPath);
+
+  // Apply optimized SQLite settings
+  db.pragma('journal_mode = WAL');
+  db.pragma('synchronous = NORMAL');
+  db.pragma('foreign_keys = ON');
+  db.pragma('temp_store = memory');
+
+  return db;
+}
+
+/**
+ * Ensure the streaming_sessions table exists
+ */
+function ensureStreamingSessionsTable(db) {
+  db.exec(`
+    CREATE TABLE IF NOT EXISTS streaming_sessions (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      claude_session_id TEXT UNIQUE NOT NULL,
+      sdk_session_id TEXT,
+      project TEXT NOT NULL,
+      title TEXT,
+      subtitle TEXT,
+      user_prompt TEXT,
+      started_at TEXT NOT NULL,
+      started_at_epoch INTEGER NOT NULL,
+      updated_at TEXT,
+      updated_at_epoch INTEGER,
+      completed_at TEXT,
+      completed_at_epoch INTEGER,
+      status TEXT NOT NULL CHECK(status IN ('active', 'completed', 'failed'))
+    )
+  `);
+
+  // Create indices if they don't exist
+  db.exec(`
+    CREATE INDEX IF NOT EXISTS idx_streaming_sessions_claude_id
+    ON streaming_sessions(claude_session_id)
+  `);
+  db.exec(`
+    CREATE INDEX IF NOT EXISTS idx_streaming_sessions_sdk_id
+    ON streaming_sessions(sdk_session_id)
+  `);
+  db.exec(`
+    CREATE INDEX IF NOT EXISTS idx_streaming_sessions_project_status
+    ON streaming_sessions(project, status)
+  `);
+}
+
+/**
+ * Create a new streaming session record
+ */
+export function createStreamingSession(db, { claude_session_id, project, user_prompt, started_at }) {
+  ensureStreamingSessionsTable(db);
+
+  const timestamp = started_at || new Date().toISOString();
+  const epoch = new Date(timestamp).getTime();
+
+  const stmt = db.prepare(`
+    INSERT INTO streaming_sessions (
+      claude_session_id, project, user_prompt, started_at, started_at_epoch, status
+    ) VALUES (?, ?, ?, ?, ?, 'active')
+  `);
+
+  const info = stmt.run(claude_session_id, project, user_prompt || null, timestamp, epoch);
+
+  return db.prepare('SELECT * FROM streaming_sessions WHERE id = ?').get(info.lastInsertRowid);
+}
+
+/**
+ * Update a streaming session by internal ID
+ */
+export function updateStreamingSession(db, id, updates) {
+  const timestamp = new Date().toISOString();
+  const epoch = Date.now();
+
+  const parts = [];
+  const values = [];
+
+  if (updates.sdk_session_id !== undefined) {
+    parts.push('sdk_session_id = ?');
+    values.push(updates.sdk_session_id);
+  }
+  if (updates.title !== undefined) {
+    parts.push('title = ?');
+    values.push(updates.title);
+  }
+  if (updates.subtitle !== undefined) {
+    parts.push('subtitle = ?');
+    values.push(updates.subtitle);
+  }
+  if (updates.status !== undefined) {
+    parts.push('status = ?');
+    values.push(updates.status);
+  }
+  if (updates.completed_at !== undefined) {
+    const completedTimestamp = typeof updates.completed_at === 'string'
+      ? updates.completed_at
+      : new Date(updates.completed_at).toISOString();
+    const completedEpoch = new Date(completedTimestamp).getTime();
+    parts.push('completed_at = ?', 'completed_at_epoch = ?');
+    values.push(completedTimestamp, completedEpoch);
+  }
+
+  // Always update the updated_at timestamp
+  parts.push('updated_at = ?', 'updated_at_epoch = ?');
+  values.push(timestamp, epoch);
+
+  values.push(id);
+
+  const stmt = db.prepare(`
+    UPDATE streaming_sessions
+    SET ${parts.join(', ')}
+    WHERE id = ?
+  `);
+
+  stmt.run(...values);
+
+  return db.prepare('SELECT * FROM streaming_sessions WHERE id = ?').get(id);
+}
+
+/**
+ * Get active streaming sessions for a project
+ */
+export function getActiveStreamingSessionsForProject(db, project) {
+  ensureStreamingSessionsTable(db);
+
+  const stmt = db.prepare(`
+    SELECT * FROM streaming_sessions
+    WHERE project = ? AND status = 'active'
+    ORDER BY started_at_epoch DESC
+  `);
+
+  return stmt.all(project);
+}
+
+/**
+ * Mark a session as completed
+ */
+export function markStreamingSessionCompleted(db, id) {
+  const timestamp = new Date().toISOString();
+  const epoch = Date.now();
+
+  const stmt = db.prepare(`
+    UPDATE streaming_sessions
+    SET status = ?,
+        completed_at = ?,
+        completed_at_epoch = ?,
+        updated_at = ?,
+        updated_at_epoch = ?
+    WHERE id = ?
+  `);
+
+  stmt.run('completed', timestamp, epoch, timestamp, epoch, id);
+
+  return db.prepare('SELECT * FROM streaming_sessions WHERE id = ?').get(id);
+}
+
+/**
+ * Initialize database with migrations and return connection
+ */
+export function initializeDatabase() {
+  const db = getDatabase();
+  ensureStreamingSessionsTable(db);
+  return db;
+}

hook-templates/stop.js

@@ -12,8 +12,8 @@ import fs from 'fs';
 import { query } from '@anthropic-ai/claude-agent-sdk';
 import { renderEndMessage, HOOK_CONFIG } from './shared/hook-prompt-renderer.js';
 import { getProjectName } from './shared/path-resolver.js';
+import { initializeDatabase, getActiveStreamingSessionsForProject, markStreamingSessionCompleted } from './shared/hook-helpers.js';
 
-const SESSION_DIR = path.join(process.env.HOME || '', '.claude-mem', 'sessions');
 const HOOKS_LOG = path.join(process.env.HOME || '', '.claude-mem', 'logs', 'hooks.log');
 
 function debugLog(message, data = {}) {
@@ -50,20 +50,31 @@ process.stdin.on('end', async () => {
   const { cwd } = payload;
   const project = cwd ? getProjectName(cwd) : 'unknown';
 
+  // Immediately clear activity flag for UI indicator
+  const activityFlagPath = path.join(process.env.HOME || '', '.claude-mem', 'activity.flag');
+  try {
+    fs.writeFileSync(activityFlagPath, JSON.stringify({ active: false, timestamp: Date.now() }));
+  } catch (error) {
+    // Silent fail - non-critical
+  }
+
   // Return immediately with async mode
   console.log(JSON.stringify({ async: true, asyncTimeout: 180000 }));
 
   try {
-    // Load SDK session info
-    const sessionFile = path.join(SESSION_DIR, `${project}_streaming.json`);
-    if (!fs.existsSync(sessionFile)) {
+    // Load SDK session info from database
+    const db = initializeDatabase();
+
+    const sessions = getActiveStreamingSessionsForProject(db, project);
+    if (!sessions || sessions.length === 0) {
       debugLog('Stop: No streaming session found', { project });
+      db.close();
       process.exit(0);
     }
 
-    const sessionData = JSON.parse(fs.readFileSync(sessionFile, 'utf8'));
-    const sdkSessionId = sessionData.sdkSessionId;
-    const claudeSessionId = sessionData.claudeSessionId;
+    const sessionData = sessions[0];
+    const sdkSessionId = sessionData.sdk_session_id;
+    const claudeSessionId = sessionData.claude_session_id;
 
     debugLog('Stop: Ending SDK session', { sdkSessionId, claudeSessionId });
 
@@ -108,10 +119,12 @@ process.stdin.on('end', async () => {
       debugLog('Stop: Cleaned up memories transcript', { memoriesTranscriptPath });
     }
 
-    // Clean up session file
-    fs.unlinkSync(sessionFile);
-    debugLog('Stop: Session ended and cleaned up', { project });
+    // Mark session as completed in database
+    markStreamingSessionCompleted(db, sessionData.id);
+    debugLog('Stop: Session ended and marked complete', { project, sessionId: sessionData.id });
 
+    // Close database connection
+    db.close();
   } catch (error) {
     debugLog('Stop: Error ending session', { error: error.message });
   }

hook-templates/user-prompt-submit.js

@@ -13,11 +13,11 @@ import { fileURLToPath } from 'url';
 import { query } from '@anthropic-ai/claude-agent-sdk';
 import { renderSystemPrompt, HOOK_CONFIG } from './shared/hook-prompt-renderer.js';
 import { getProjectName } from './shared/path-resolver.js';
+import { initializeDatabase, createStreamingSession, updateStreamingSession } from './shared/hook-helpers.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 
-const SESSION_DIR = path.join(process.env.HOME || '', '.claude-mem', 'sessions');
 const HOOKS_LOG = path.join(process.env.HOME || '', '.claude-mem', 'logs', 'hooks.log');
 
 function debugLog(message, data = {}) {
@@ -60,6 +60,14 @@ process.stdin.on('end', async () => {
 
   debugLog('UserPromptSubmit: Starting streaming session', { project, session_id });
 
+  // Immediately signal activity start for UI indicator
+  const activityFlagPath = path.join(process.env.HOME || '', '.claude-mem', 'activity.flag');
+  try {
+    fs.writeFileSync(activityFlagPath, JSON.stringify({ active: true, project, timestamp: Date.now() }));
+  } catch (error) {
+    // Silent fail - non-critical
+  }
+
   // Generate title and subtitle non-blocking
   if (prompt && session_id && project) {
     import('child_process').then(({ spawn }) => {
@@ -80,6 +88,22 @@ process.stdin.on('end', async () => {
   }
 
   try {
+    // Initialize database and create session record FIRST
+    const db = initializeDatabase();
+
+    // Create session record immediately - this gives us a tracking ID
+    const sessionRecord = createStreamingSession(db, {
+      claude_session_id: session_id,
+      project,
+      user_prompt: prompt,
+      started_at: timestamp
+    });
+
+    debugLog('UserPromptSubmit: Created session record', {
+      internalId: sessionRecord.id,
+      claudeSessionId: session_id
+    });
+
     // Build system prompt using centralized config
     const systemPrompt = renderSystemPrompt({
       project,
@@ -110,19 +134,19 @@ process.stdin.on('end', async () => {
     }
 
     if (sdkSessionId) {
-      // Save session info for other hooks
-      fs.mkdirSync(SESSION_DIR, { recursive: true });
-      const sessionFile = path.join(SESSION_DIR, `${project}_streaming.json`);
-      fs.writeFileSync(sessionFile, JSON.stringify({
-        sdkSessionId,
-        claudeSessionId: session_id,
-        project,
-        startedAt: timestamp,
-        date
-      }, null, 2));
+      // Update session record with SDK session ID
+      updateStreamingSession(db, sessionRecord.id, {
+        sdk_session_id: sdkSessionId
+      });
 
-      debugLog('UserPromptSubmit: SDK session started', { sdkSessionId, sessionFile });
+      debugLog('UserPromptSubmit: SDK session started', {
+        internalId: sessionRecord.id,
+        sdkSessionId
+      });
     }
+
+    // Close database connection
+    db.close();
   } catch (error) {
     debugLog('UserPromptSubmit: Error starting SDK session', { error: error.message });
   }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-mem",
-  "version": "3.9.10",
+  "version": "3.9.11",
   "description": "Memory compression system for Claude Code - persist context across sessions",
   "keywords": [
     "claude",

src/bin/cli.ts

@@ -224,9 +224,8 @@ program
   .description('Generate a session title and subtitle from a prompt')
   .option('--json', 'Output as JSON')
   .option('--oneline', 'Output as single line (title - subtitle)')
-  .option('--save', 'Save title and subtitle to session metadata')
-  .option('--project <name>', 'Project name (required with --save)')
-  .option('--session <id>', 'Session ID (required with --save)')
+  .option('--session-id <id>', 'Claude session ID to update')
+  .option('--save', 'Save the generated title to the database (requires --session-id)')
   .action(generateTitle);
 
 // </Block> =======================================
@@ -268,3 +267,9 @@ try {
 // Parse arguments and execute
 program.parse();
 // </Block> =======================================
+
+// <Block> 1.12 ===================================
+// Module Exports for Programmatic Use
+// Export database and utility classes for hooks and external consumers
+export { DatabaseManager, StreamingSessionStore, migrations, initializeDatabase, getDatabase } from '../services/sqlite/index.js';
+// </Block> =======================================

src/commands/generate-title.ts

@@ -1,14 +1,17 @@
 import { OptionValues } from 'commander';
 import { query } from '@anthropic-ai/claude-agent-sdk';
 import { getClaudePath } from '../shared/settings.js';
-import path from 'path';
-import fs from 'fs';
-
-const SESSION_DIR = path.join(process.env.HOME || '', '.claude-mem', 'sessions');
+import { DatabaseManager } from '../services/sqlite/Database.js';
+import { StreamingSessionStore } from '../services/sqlite/StreamingSessionStore.js';
+import { migrations } from '../services/sqlite/migrations.js';
 
 /**
  * Generate a session title and subtitle from a user prompt
  * CLI command that uses Agent SDK (like changelog.ts)
+ *
+ * Can be called in two modes:
+ * 1. Standalone: generate-title "user prompt" --json
+ * 2. With session: generate-title "user prompt" --session-id <id> --save
  */
 export async function generateTitle(prompt: string, options: OptionValues): Promise<void> {
   if (!prompt || prompt.trim().length === 0) {
@@ -19,6 +22,36 @@ export async function generateTitle(prompt: string, options: OptionValues): Prom
     process.exit(1);
   }
 
+  // If --session-id provided, validate that session exists
+  let streamingStore: StreamingSessionStore | null = null;
+  let sessionRecord = null;
+
+  if (options.sessionId) {
+    try {
+      const dbManager = DatabaseManager.getInstance();
+      for (const migration of migrations) {
+        dbManager.registerMigration(migration);
+      }
+      const db = await dbManager.initialize();
+      streamingStore = new StreamingSessionStore(db);
+
+      sessionRecord = streamingStore.getByClaudeSessionId(options.sessionId);
+      if (!sessionRecord) {
+        console.error(JSON.stringify({
+          success: false,
+          error: `Session not found: ${options.sessionId}`
+        }));
+        process.exit(1);
+      }
+    } catch (error: any) {
+      console.error(JSON.stringify({
+        success: false,
+        error: `Database error: ${error.message}`
+      }));
+      process.exit(1);
+    }
+  }
+
   const systemPrompt = `You are a title and subtitle generator for claude-mem session metadata.
 
 Your job is to analyze a user's request and generate:
@@ -107,49 +140,17 @@ Now generate the title and subtitle (two lines exactly):`;
     const title = lines[0].trim();
     const subtitle = lines[1].trim();
 
-    // Save to session metadata if --save flag is provided
-    if (options.save) {
-      if (!options.project || !options.session) {
-        console.error(JSON.stringify({
-          success: false,
-          error: '--project and --session are required when using --save'
-        }));
-        process.exit(1);
-      }
-
+    // If --save and we have a session, update the database
+    if (options.save && streamingStore && sessionRecord) {
       try {
-        const sessionFile = path.join(SESSION_DIR, `${options.project}_streaming.json`);
-
-        if (!fs.existsSync(sessionFile)) {
-          console.error(JSON.stringify({
-            success: false,
-            error: `Session file not found: ${sessionFile}`
-          }));
-          process.exit(1);
-        }
-
-        let sessionData: any = {};
-        try {
-          sessionData = JSON.parse(fs.readFileSync(sessionFile, 'utf8'));
-        } catch (e) {
-          console.error(JSON.stringify({
-            success: false,
-            error: 'Failed to parse session file'
-          }));
-          process.exit(1);
-        }
-
-        // Update metadata
-        sessionData.promptTitle = title;
-        sessionData.promptSubtitle = subtitle;
-        sessionData.updatedAt = new Date().toISOString();
-
-        // Write back to file
-        fs.writeFileSync(sessionFile, JSON.stringify(sessionData, null, 2));
+        streamingStore.update(sessionRecord.id, {
+          title,
+          subtitle
+        });
       } catch (error: any) {
         console.error(JSON.stringify({
           success: false,
-          error: `Failed to save metadata: ${error.message}`
+          error: `Failed to save title: ${error.message}`
         }));
         process.exit(1);
       }
@@ -160,7 +161,8 @@ Now generate the title and subtitle (two lines exactly):`;
       console.log(JSON.stringify({
         success: true,
         title,
-        subtitle
+        subtitle,
+        sessionId: sessionRecord?.claude_session_id
       }, null, 2));
     } else if (options.oneline) {
       console.log(`${title} - ${subtitle}`);

src/services/sqlite/StreamingSessionStore.ts

@@ -0,0 +1,266 @@
+import { Database } from 'better-sqlite3';
+import { getDatabase } from './Database.js';
+import { normalizeTimestamp } from './types.js';
+
+/**
+ * Represents a streaming session row in the database
+ */
+export interface StreamingSessionRow {
+  id: number;
+  claude_session_id: string;
+  sdk_session_id?: string;
+  project: string;
+  title?: string;
+  subtitle?: string;
+  user_prompt?: string;
+  started_at: string;
+  started_at_epoch: number;
+  updated_at?: string;
+  updated_at_epoch?: number;
+  completed_at?: string;
+  completed_at_epoch?: number;
+  status: 'active' | 'completed' | 'failed';
+}
+
+/**
+ * Input type for creating a new streaming session
+ */
+export interface StreamingSessionInput {
+  claude_session_id: string;
+  project: string;
+  user_prompt?: string;
+  started_at?: string | Date | number;
+}
+
+/**
+ * Input type for updating a streaming session
+ */
+export interface StreamingSessionUpdate {
+  sdk_session_id?: string;
+  title?: string;
+  subtitle?: string;
+  status?: 'active' | 'completed' | 'failed';
+  completed_at?: string | Date | number;
+}
+
+/**
+ * Data Access Object for streaming session records
+ * Handles real-time session tracking during SDK compression
+ */
+export class StreamingSessionStore {
+  private db: Database.Database;
+
+  constructor(db?: Database.Database) {
+    this.db = db || getDatabase();
+  }
+
+  /**
+   * Create a new streaming session record
+   * This should be called immediately when the hook receives a user prompt
+   */
+  create(input: StreamingSessionInput): StreamingSessionRow {
+    const { isoString, epoch } = normalizeTimestamp(input.started_at);
+
+    const stmt = this.db.prepare(`
+      INSERT INTO streaming_sessions (
+        claude_session_id, project, user_prompt, started_at, started_at_epoch, status
+      ) VALUES (?, ?, ?, ?, ?, 'active')
+    `);
+
+    const info = stmt.run(
+      input.claude_session_id,
+      input.project,
+      input.user_prompt || null,
+      isoString,
+      epoch
+    );
+
+    return this.getById(info.lastInsertRowid as number)!;
+  }
+
+  /**
+   * Update a streaming session by internal ID
+   * Uses atomic transaction to prevent race conditions
+   */
+  update(id: number, updates: StreamingSessionUpdate): StreamingSessionRow {
+    const { isoString: updatedAt, epoch: updatedEpoch } = normalizeTimestamp(new Date());
+
+    const existing = this.getById(id);
+    if (!existing) {
+      throw new Error(`Streaming session with id ${id} not found`);
+    }
+
+    const parts: string[] = [];
+    const values: any[] = [];
+
+    if (updates.sdk_session_id !== undefined) {
+      parts.push('sdk_session_id = ?');
+      values.push(updates.sdk_session_id);
+    }
+    if (updates.title !== undefined) {
+      parts.push('title = ?');
+      values.push(updates.title);
+    }
+    if (updates.subtitle !== undefined) {
+      parts.push('subtitle = ?');
+      values.push(updates.subtitle);
+    }
+    if (updates.status !== undefined) {
+      parts.push('status = ?');
+      values.push(updates.status);
+    }
+    if (updates.completed_at !== undefined) {
+      const { isoString, epoch } = normalizeTimestamp(updates.completed_at);
+      parts.push('completed_at = ?', 'completed_at_epoch = ?');
+      values.push(isoString, epoch);
+    }
+
+    // Always update the updated_at timestamp
+    parts.push('updated_at = ?', 'updated_at_epoch = ?');
+    values.push(updatedAt, updatedEpoch);
+
+    values.push(id);
+
+    const stmt = this.db.prepare(`
+      UPDATE streaming_sessions
+      SET ${parts.join(', ')}
+      WHERE id = ?
+    `);
+
+    stmt.run(...values);
+
+    return this.getById(id)!;
+  }
+
+  /**
+   * Update a streaming session by Claude session ID
+   * Convenience method for hooks that only have the Claude session ID
+   */
+  updateByClaudeSessionId(claudeSessionId: string, updates: StreamingSessionUpdate): StreamingSessionRow | null {
+    const session = this.getByClaudeSessionId(claudeSessionId);
+    if (!session) {
+      return null;
+    }
+    return this.update(session.id, updates);
+  }
+
+  /**
+   * Get streaming session by internal ID
+   */
+  getById(id: number): StreamingSessionRow | null {
+    const stmt = this.db.prepare('SELECT * FROM streaming_sessions WHERE id = ?');
+    return stmt.get(id) as StreamingSessionRow || null;
+  }
+
+  /**
+   * Get streaming session by Claude session ID
+   */
+  getByClaudeSessionId(claudeSessionId: string): StreamingSessionRow | null {
+    const stmt = this.db.prepare('SELECT * FROM streaming_sessions WHERE claude_session_id = ?');
+    return stmt.get(claudeSessionId) as StreamingSessionRow || null;
+  }
+
+  /**
+   * Get streaming session by SDK session ID
+   */
+  getBySdkSessionId(sdkSessionId: string): StreamingSessionRow | null {
+    const stmt = this.db.prepare('SELECT * FROM streaming_sessions WHERE sdk_session_id = ?');
+    return stmt.get(sdkSessionId) as StreamingSessionRow || null;
+  }
+
+  /**
+   * Check if a streaming session exists by Claude session ID
+   */
+  has(claudeSessionId: string): boolean {
+    const stmt = this.db.prepare('SELECT 1 FROM streaming_sessions WHERE claude_session_id = ? LIMIT 1');
+    return Boolean(stmt.get(claudeSessionId));
+  }
+
+  /**
+   * Get active streaming sessions for a project
+   */
+  getActiveForProject(project: string): StreamingSessionRow[] {
+    const stmt = this.db.prepare(`
+      SELECT * FROM streaming_sessions
+      WHERE project = ? AND status = 'active'
+      ORDER BY started_at_epoch DESC
+    `);
+    return stmt.all(project) as StreamingSessionRow[];
+  }
+
+  /**
+   * Get all active streaming sessions
+   */
+  getAllActive(): StreamingSessionRow[] {
+    const stmt = this.db.prepare(`
+      SELECT * FROM streaming_sessions
+      WHERE status = 'active'
+      ORDER BY started_at_epoch DESC
+    `);
+    return stmt.all() as StreamingSessionRow[];
+  }
+
+  /**
+   * Get recent streaming sessions (completed or failed)
+   */
+  getRecent(limit = 10): StreamingSessionRow[] {
+    const stmt = this.db.prepare(`
+      SELECT * FROM streaming_sessions
+      ORDER BY started_at_epoch DESC
+      LIMIT ?
+    `);
+    return stmt.all(limit) as StreamingSessionRow[];
+  }
+
+  /**
+   * Mark a session as completed
+   */
+  markCompleted(id: number): StreamingSessionRow {
+    return this.update(id, {
+      status: 'completed',
+      completed_at: new Date()
+    });
+  }
+
+  /**
+   * Mark a session as failed
+   */
+  markFailed(id: number): StreamingSessionRow {
+    return this.update(id, {
+      status: 'failed',
+      completed_at: new Date()
+    });
+  }
+
+  /**
+   * Delete a streaming session by ID
+   */
+  deleteById(id: number): boolean {
+    const stmt = this.db.prepare('DELETE FROM streaming_sessions WHERE id = ?');
+    const info = stmt.run(id);
+    return info.changes > 0;
+  }
+
+  /**
+   * Delete a streaming session by Claude session ID
+   */
+  deleteByClaudeSessionId(claudeSessionId: string): boolean {
+    const stmt = this.db.prepare('DELETE FROM streaming_sessions WHERE claude_session_id = ?');
+    const info = stmt.run(claudeSessionId);
+    return info.changes > 0;
+  }
+
+  /**
+   * Clean up old completed/failed sessions (older than N days)
+   */
+  cleanupOldSessions(daysOld = 30): number {
+    const cutoffEpoch = Date.now() - (daysOld * 24 * 60 * 60 * 1000);
+    const stmt = this.db.prepare(`
+      DELETE FROM streaming_sessions
+      WHERE status IN ('completed', 'failed')
+        AND completed_at_epoch < ?
+    `);
+    const info = stmt.run(cutoffEpoch);
+    return info.changes;
+  }
+}

src/services/sqlite/index.ts

@@ -7,6 +7,7 @@ export { MemoryStore } from './MemoryStore.js';
 export { OverviewStore } from './OverviewStore.js';
 export { DiagnosticsStore } from './DiagnosticsStore.js';
 export { TranscriptEventStore } from './TranscriptEventStore.js';
+export { StreamingSessionStore } from './StreamingSessionStore.js';
 
 // Export types
 export * from './types.js';
@@ -32,12 +33,14 @@ export async function createStores() {
   const { OverviewStore } = await import('./OverviewStore.js');
   const { DiagnosticsStore } = await import('./DiagnosticsStore.js');
   const { TranscriptEventStore } = await import('./TranscriptEventStore.js');
+  const { StreamingSessionStore } = await import('./StreamingSessionStore.js');
 
   return {
     sessions: new SessionStore(db),
     memories: new MemoryStore(db),
     overviews: new OverviewStore(db),
     diagnostics: new DiagnosticsStore(db),
-    transcriptEvents: new TranscriptEventStore(db)
+    transcriptEvents: new TranscriptEventStore(db),
+    streamingSessions: new StreamingSessionStore(db)
   };
 }

src/services/sqlite/migrations.ts

@@ -160,10 +160,53 @@ export const migration002: Migration = {
   }
 };
 
+/**
+ * Migration 003 - Add streaming_sessions table for real-time session tracking
+ */
+export const migration003: Migration = {
+  version: 3,
+  up: (db: Database.Database) => {
+    // Streaming sessions table - tracks active SDK compression sessions
+    db.exec(`
+      CREATE TABLE IF NOT EXISTS streaming_sessions (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        claude_session_id TEXT UNIQUE NOT NULL,
+        sdk_session_id TEXT,
+        project TEXT NOT NULL,
+        title TEXT,
+        subtitle TEXT,
+        user_prompt TEXT,
+        started_at TEXT NOT NULL,
+        started_at_epoch INTEGER NOT NULL,
+        updated_at TEXT,
+        updated_at_epoch INTEGER,
+        completed_at TEXT,
+        completed_at_epoch INTEGER,
+        status TEXT NOT NULL DEFAULT 'active'
+      );
+
+      CREATE INDEX IF NOT EXISTS idx_streaming_sessions_claude_id ON streaming_sessions(claude_session_id);
+      CREATE INDEX IF NOT EXISTS idx_streaming_sessions_sdk_id ON streaming_sessions(sdk_session_id);
+      CREATE INDEX IF NOT EXISTS idx_streaming_sessions_project ON streaming_sessions(project);
+      CREATE INDEX IF NOT EXISTS idx_streaming_sessions_status ON streaming_sessions(status);
+      CREATE INDEX IF NOT EXISTS idx_streaming_sessions_started ON streaming_sessions(started_at_epoch DESC);
+    `);
+
+    console.log('✅ Created streaming_sessions table for real-time session tracking');
+  },
+
+  down: (db: Database.Database) => {
+    db.exec(`
+      DROP TABLE IF EXISTS streaming_sessions;
+    `);
+  }
+};
+
 /**
  * All migrations in order
  */
 export const migrations: Migration[] = [
   migration001,
-  migration002
+  migration002,
+  migration003
 ];

src/utils/platform.ts

@@ -0,0 +1,112 @@
+import { platform, homedir } from 'os';
+import { execSync } from 'child_process';
+import { chmodSync } from 'fs';
+import { join } from 'path';
+
+const isWindows = platform() === 'win32';
+
+/**
+ * Platform-specific utilities for cross-platform compatibility
+ * Handles differences between Windows and Unix-like systems
+ */
+export const Platform = {
+  /**
+   * Returns the appropriate shell for the current platform
+   */
+  getShell: (): string => {
+    return isWindows ? 'powershell' : '/bin/sh';
+  },
+
+  /**
+   * Returns the file extension for hook scripts
+   */
+  getHookExtension: (): string => {
+    return '.js'; // Both platforms can execute Node.js scripts
+  },
+
+  /**
+   * Finds the path to an executable command
+   * @param name - Name of the executable to find
+   * @returns Full path to the executable
+   */
+  findExecutable: (name: string): string => {
+    const cmd = isWindows ? `where ${name}` : `which ${name}`;
+    return execSync(cmd, {
+      encoding: 'utf8',
+      stdio: ['ignore', 'pipe', 'ignore']
+    }).trim();
+  },
+
+  /**
+   * Makes a file executable (Unix only - no-op on Windows)
+   * @param path - Path to the file to make executable
+   */
+  makeExecutable: (path: string): void => {
+    if (!isWindows) {
+      chmodSync(path, 0o755);
+    }
+  },
+
+  /**
+   * Installs uv package manager using platform-specific method
+   */
+  installUv: (): void => {
+    if (isWindows) {
+      execSync('powershell -Command "irm https://astral.sh/uv/install.ps1 | iex"', {
+        stdio: 'pipe'
+      });
+    } else {
+      execSync('curl -LsSf https://astral.sh/uv/install.sh | sh', {
+        stdio: 'pipe',
+        shell: '/bin/sh'
+      });
+    }
+  },
+
+  /**
+   * Returns shell configuration file paths for the current platform
+   * @returns Array of shell config file paths
+   */
+  getShellConfigPaths: (): string[] => {
+    const home = homedir();
+
+    if (isWindows) {
+      return [
+        join(home, 'Documents', 'PowerShell', 'Microsoft.PowerShell_profile.ps1'),
+        join(home, 'Documents', 'WindowsPowerShell', 'Microsoft.PowerShell_profile.ps1')
+      ];
+    }
+
+    return [
+      join(home, '.bashrc'),
+      join(home, '.zshrc'),
+      join(home, '.bash_profile')
+    ];
+  },
+
+  /**
+   * Gets the appropriate alias syntax for the current platform's shell
+   * @param aliasName - Name of the alias
+   * @param command - Command to alias
+   * @returns Alias definition string
+   */
+  getAliasDefinition: (aliasName: string, command: string): string => {
+    if (isWindows) {
+      // PowerShell function syntax
+      return `function ${aliasName} { ${command} $args }`;
+    }
+
+    // Bash/Zsh alias syntax
+    return `alias ${aliasName}='${command}'`;
+  },
+
+  /**
+   * Returns whether the current platform is Windows
+   */
+  isWindows: (): boolean => isWindows,
+
+  /**
+   * Returns whether the current platform is Unix-like (macOS/Linux)
+   */
+  isUnix: (): boolean => !isWindows
+};