Add auto-update: postinstall hook + daily background self-update

- postinstall.cjs: on npm install/update, automatically copies dist
  files to ~/.claude/statusblocks/ if already installed via init
- Self-update in index.ts: once per 24h, spawns a detached background
  npx process to fetch and install the latest version — no user
  intervention needed after the first manual update

Author: okturan

package.json

@@ -1,16 +1,18 @@
 {
   "name": "claude-statusblocks",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "description": "Opinionated, adaptive block-based status line for Claude Code with bin-packing layout, rate limit tracking, and campaign monitoring",
   "type": "module",
   "bin": {
     "claude-statusblocks": "dist/cli.js"
   },
   "main": "./dist/index.js",
   "files": [
-    "dist"
+    "dist",
+    "postinstall.cjs"
   ],
   "scripts": {
+    "postinstall": "node postinstall.cjs",
     "build": "tsc",
     "dev": "tsc --watch",
     "test": "vitest run",

postinstall.cjs

@@ -0,0 +1,13 @@
+// Auto-update ~/.claude/statusblocks/ on npm install/update (if already installed via init)
+const { cpSync, existsSync } = require('fs');
+const { join } = require('path');
+const { homedir } = require('os');
+
+try {
+  const dest = join(homedir(), '.claude', 'statusblocks');
+  if (existsSync(dest)) {
+    cpSync(join(__dirname, 'dist'), dest, { recursive: true, force: true });
+  }
+} catch {
+  // Best-effort — don't fail the install
+}

src/index.ts

@@ -1,10 +1,37 @@
 #!/usr/bin/env node
 
-import { execSync } from 'child_process';
+import { execSync, spawn } from 'child_process';
+import { readFileSync, writeFileSync, existsSync } from 'fs';
+import { join } from 'path';
+import { homedir } from 'os';
 import type { StatusLineData } from './types.js';
 import { loadConfig } from './config.js';
 import { render } from './layout.js';
 
+const AUTO_UPDATE_INTERVAL = 86400000; // 24 hours
+
+/** Once per day, spawn a background npx process to update ~/.claude/statusblocks/ */
+function maybeAutoUpdate() {
+  try {
+    const dir = join(homedir(), '.claude', 'statusblocks');
+    if (!existsSync(dir)) return;
+
+    const checkFile = join(dir, '.last-update-check');
+    let lastCheck = 0;
+    try { lastCheck = parseInt(readFileSync(checkFile, 'utf8'), 10) || 0; } catch { /* missing file */ }
+    if (Date.now() - lastCheck < AUTO_UPDATE_INTERVAL) return;
+
+    writeFileSync(checkFile, String(Date.now()));
+
+    const child = spawn('npx -y claude-statusblocks@latest update', {
+      detached: true,
+      stdio: 'ignore',
+      shell: true,
+    });
+    child.unref();
+  } catch { /* auto-update is best-effort */ }
+}
+
 /** Validate that parsed JSON has the required shape of StatusLineData */
 function isValidStatusData(v: unknown): v is StatusLineData {
   if (!v || typeof v !== 'object' || Array.isArray(v)) return false;
@@ -58,4 +85,5 @@ process.stdin.on('end', () => {
     process.stderr.write(`[claude-statusblocks] ${err instanceof Error ? err.message : err}\n`);
     process.stdout.write('\n');
   }
+  maybeAutoUpdate();
 });