Add Zed extension, CI/CD, and fix developer experience issues
Zed extension (editors/zed/) with Rust WASM shim that auto-downloads
gastro-lsp from GitHub releases. Cross-platform release build script
and GitHub Actions workflows for CI (test, lint, Zed WASM check) and
release (matrix build for 6 platforms, GitHub release creation).
DX fixes: dedicated build:gastro-lsp task, VS Code npm deps automated,
Neovim LSP auto-starts without requiring setup(), link:neovim task,
lint task (go vet), clean task, consistent build output. Docs updated
with correct Go version (1.26+) and Zed editor instructions.
Add Zed extension, CI/CD, and fix developer experience issues
Zed extension (editors/zed/) with Rust WASM shim that auto-downloads
gastro-lsp from GitHub releases. Cross-platform release build script
and GitHub Actions workflows for CI (test, lint, Zed WASM check) and
release (matrix build for 6 platforms, GitHub release creation).
DX fixes: dedicated build:gastro-lsp task, VS Code npm deps automated,
Neovim LSP auto-starts without requiring setup(), link:neovim task,
lint task (go vet), clean task, consistent build output. Docs updated
with correct Go version (1.26+) and Zed editor instructions.