♻️ refactor(lsp_server): move entrypoints out of named modules

- export Run() from launcher module and add non-module main TU
- apply same pattern to module-based test executables
- migrate utils/string implementation fully into string.cppm and drop string.cpp
- point clangd to linux build compilation database

lsp-server/test/test_ast/CMakeLists.txt

@@ -18,10 +18,10 @@ endif()
 set(CMAKE_EXPERIMENTAL_CXX_MODULE_DYNDEP 1)
 
 set(SOURCES
+    main.cc
     test.cppm
     debug_printer.cppm
     ../../src/utils/string.cppm
-    ../../src/utils/string.cpp
     ../../src/tree-sitter/scanner.c
     ../../src/tree-sitter/parser.c)
 

lsp-server/test/test_ast/main.cc

@@ -0,0 +1,6 @@
+import lsp.test.ast.main;
+
+int main(int argc, char* argv[])
+{
+    return Run(argc, argv);
+}

lsp-server/test/test_ast/test.cppm

@@ -120,7 +120,7 @@ void PrintUsage(const char* program_name)
     std::cout << "  " << program_name << " test.tsf -s -n  # Show source without colors\n";
 }
 
-int main(int argc, char* argv[])
+export int Run(int argc, char* argv[])
 {
     if (argc < 2)
     {