feat: smart PCH rebuild, #include/import completion, rapid-edit robustness

docs/zh/dev/extension.md

@@ -30,7 +30,7 @@ pixi run publish-vscode
 
 1. `pixi shell -e node`
 2. 在 `editors/vscode` 下运行 `pnpm run watch`（增量构建）
-3. VSCode 中使用 “Run Extension/Launch Extension” 调试配置，或执行 `code --extensionDevelopmentPath=$(pwd)/editors/vscode`
+3. VSCode 中使用”Run Extension/Launch Extension”调试配置，或执行 `code --extensionDevelopmentPath=$(pwd)/editors/vscode`
 
 常用脚本（在 `pixi shell -e node` 下）：
 

src/clice.cc

@@ -1,3 +1,4 @@
+#include <csignal>
 #include <cstdint>
 #include <iostream>
 #include <print>
@@ -64,6 +65,13 @@ struct Options {
 }  // namespace clice
 
 int main(int argc, const char** argv) {
+#ifndef _WIN32
+    // On POSIX systems, ignore SIGPIPE so that writing to a closed pipe
+    // (e.g. when the LSP client disconnects) returns EPIPE instead of
+    // killing the process.  This is standard practice for pipe-based servers.
+    signal(SIGPIPE, SIG_IGN);
+#endif
+
     auto args = deco::util::argvify(argc, argv);
     auto result = deco::cli::parse<clice::Options>(args);
 

src/compile/compilation_unit.cpp

@@ -87,7 +87,9 @@ auto CompilationUnitRef::file_path(clang::FileID fid) -> llvm::StringRef {
     }
 
     auto entry = self->SM().getFileEntryRefForID(fid);
-    assert(entry && "Invalid file entry");
+    if(!entry) {
+        return {};
+    }
 
     llvm::SmallString<128> path;
 
@@ -242,13 +244,19 @@ std::vector<std::string> CompilationUnitRef::deps() {
     for(auto& [fid, directive]: directives()) {
         for(auto& include: directive.includes) {
             if(!include.skipped) {
-                deps.try_emplace(file_path(include.fid));
+                auto path = file_path(include.fid);
+                if(!path.empty()) {
+                    deps.try_emplace(path);
+                }
             }
         }
 
         for(auto& has_include: directive.has_includes) {
             if(has_include.fid.isValid()) {
-                deps.try_emplace(file_path(has_include.fid));
+                auto path = file_path(has_include.fid);
+                if(!path.empty()) {
+                    deps.try_emplace(path);
+                }
             }
         }
     }

src/server/config.cpp

@@ -25,10 +25,10 @@ void CliceConfig::apply_defaults(const std::string& workspace_root) {
         cpu_count = 4;
 
     if(stateful_worker_count == 0) {
-        stateful_worker_count = std::max(1u, cpu_count / 4);
+        stateful_worker_count = 2;
     }
     if(stateless_worker_count == 0) {
-        stateless_worker_count = std::max(1u, cpu_count / 4);
+        stateless_worker_count = 3;
     }
     if(worker_memory_limit == 0) {
         worker_memory_limit = 4ULL * 1024 * 1024 * 1024;  // 4GB default