From 29c8b0be4dfddff42b133ea91300a769aca8a9a2 Mon Sep 17 00:00:00 2001
From: cat_shark <1716967236@qq.com>
Date: Sat, 4 Jul 2026 11:22:08 +0800
Subject: [PATCH] =?UTF-8?q?fix(lpt-ai)=EF=BC=9A=E5=90=AF=E5=8A=A8=E6=97=B6?=
 =?UTF-8?q?=E6=9C=AA=E5=8A=A0=E8=BD=BD=20.env=20=E6=96=87=E4=BB=B6?=
 =?UTF-8?q?=E5=AF=BC=E8=87=B4=20LLM=5FAPI=5FKEY=20=E5=A7=8B=E7=BB=88?=
 =?UTF-8?q?=E4=B8=BA=E7=A9=BA?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

根因：项目未依赖 dotenv，启动脚本也未使用 --env-file，
process.env 中没有 LLM_API_KEY，isAvailable() 始终返回 false，
/health 端点返回 llmAvailable: false。

修复：
- index.ts 启动时手动读取 .env 并注入 process.env
  （零依赖，兼容 tsx watch dev 和 node dist 两种启动方式）
- start 脚本保留 node --env-file=.env 双保险
- .gitignore 加入 .idea/
---
 .gitignore   |  1 +
 package.json |  2 +-
 src/index.ts | 20 ++++++++++++++++++++
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index d8421de..893cde7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ dist/
 !.env.example
 *.log
 .DS_Store
+.idea/
diff --git a/package.json b/package.json
index a3698f3..86c686a 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "scripts": {
     "dev": "tsx watch src/index.ts",
     "build": "tsc",
-    "start": "node dist/index.js",
+    "start": "node --env-file=.env dist/index.js",
     "test": "vitest run",
     "typecheck": "tsc --noEmit"
   },
diff --git a/src/index.ts b/src/index.ts
index ca6093f..938aa64 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,6 +1,26 @@
+import { readFileSync } from "node:fs";
+import { fileURLToPath } from "node:url";
+import { dirname, resolve } from "node:path";
 import Fastify from "fastify";
 import { aiRoutes } from "./routes/ai.js";
 
+// ===== 加载 .env（零依赖，兼容 dev/start 两种启动方式）=====
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const envPath = resolve(__dirname, "..", ".env");
+try {
+  for (const line of readFileSync(envPath, "utf-8").split(/\r?\n/)) {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith("#")) continue;
+    const eq = trimmed.indexOf("=");
+    if (eq === -1) continue;
+    const k = trimmed.slice(0, eq).trim();
+    const v = trimmed.slice(eq + 1).trim();
+    if (k && !(k in process.env)) process.env[k] = v;
+  }
+} catch {
+  // .env not found, use system environment
+}
+
 const app = Fastify({
   logger: {
     level: "info",