From bdef6c6b9f6b8179b4b4221bf296e2e06394eae7 Mon Sep 17 00:00:00 2001
From: 1445043649 <>
Date: Mon, 11 May 2026 17:35:23 +0800
Subject: [PATCH] fix(serve): auto-install postgres extras when config.yaml
 selects postgres
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scripts/serve.sh 在 \`uv sync --quiet\` 前 grep config.yaml 探测
\`database.backend: postgres\`；若是则追加 \`--extra postgres\`，否则保持原状。

修一个 PR1+PR2 没覆盖到的隐患：serve.sh 每次 dev 启动都跑 uv sync，会把
之前手动 \`uv sync --extra postgres\` 装的 asyncpg 卸掉，导致 gateway
启动时 ImportError。

Stage 0 PR2 follow-up（不在原 plan task list 内，是 live 验证时发现）。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 scripts/serve.sh | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/scripts/serve.sh b/scripts/serve.sh
index 17d46eed..31b5e23b 100755
--- a/scripts/serve.sh
+++ b/scripts/serve.sh
@@ -158,8 +158,16 @@ fi
 # ── Install dependencies ────────────────────────────────────────────────────
 
 if ! $SKIP_INSTALL; then
+    # Detect postgres backend in config.yaml so we install asyncpg + friends.
+    # Without this, `uv sync` strips the optional postgres extras between
+    # restarts and the gateway crashes at startup with "asyncpg is not installed".
+    UV_EXTRAS=""
+    if [ -f "$REPO_ROOT/config.yaml" ] && grep -qE "^[[:space:]]*backend:[[:space:]]*postgres" "$REPO_ROOT/config.yaml"; then
+        UV_EXTRAS="--extra postgres"
+        echo "Detected database.backend=postgres → installing postgres extras"
+    fi
     echo "Syncing dependencies..."
-    (cd backend && uv sync --quiet) || { echo "✗ Backend dependency install failed"; exit 1; }
+    (cd backend && uv sync --quiet $UV_EXTRAS) || { echo "✗ Backend dependency install failed"; exit 1; }
     (cd frontend && pnpm install --silent) || { echo "✗ Frontend dependency install failed"; exit 1; }
     echo "✓ Dependencies synced"
 else