e29b166453
Make the Windows build produce a truly standalone .exe with no runtime DLL prerequisites, and stop tracking a placeholder index.html that the build pipeline rewrites on every run. webui package - Move the placeholder HTML out of a tracked file on disk and into a placeholderHTML const in webui.go. serveIndex falls back to that const when the embed does not contain index.html, so dev builds that skip the frontend still get a sensible landing page. - IsBuilt now checks for index.html instead of _next/ so the helper stays accurate when only the placeholder is embedded. Embed directory hygiene - dist/.gitignore now ignores everything except itself; the directory still exists for //go:embed but never shows dirty after a build. - Stop tracking the old placeholder at dist/index.html. scripts/build.ps1 - Staging step clears everything in dist/ except .gitignore (was also preserving the old index.html). - Windows amd64 builds now static-link the mingw-w64 C runtime via -ldflags '-linkmode external -extldflags "-static"' so the final orchestrad.exe depends only on standard Windows system DLLs and the Universal CRT (part of Windows 10+). Verified: no libgcc_s_seh-1, libstdc++-6, libwinpthread-1, msvcr*, or vcruntime140 imports. - Auto-discover gcc from C:\ProgramData\mingw64, Chocolatey's mingw, MSYS2 (ucrt64/mingw64), and TDM-GCC install locations so fresh checkouts build without manual PATH edits after 'choco install mingw'. - Windows arm64 is now skipped with a clear message when a matching aarch64-w64-mingw32-gcc cross-compiler is not available, instead of failing the whole run. Binary impact (windows/amd64, CGO on, static): 24.06 MB.