Add hemx-lsp for stdio LSP diagnostics, completion, and hover while preserving HTML editor tooling for .heml files. Teach hemx-build to expose generated target and derive-known template context facts, including simple h-for locals, so editor help comes from build-owned facts instead of editor-only parsers. Wire VS Code/Cursor and Neovim documentation and extend the Workout exemplar with a real h-for plan loop for end-to-end proof.
req: diag/004
req: diag/005
req: diag/006
Add public .heml syntax authority and refactor the unkeyed generated-target error into structured diagnostic data while preserving the human compiler error.
req: diagnostics/001
req: diagnostics/002
Improve the unkeyed h-for diagnostic so authors see the exact loop, stable h-key shape, generated helper consequence, and why dynamic child data-key is not enough.
req: scope/001
req: diagnostics/002
Move canonical examples and docs snippets from raw render/page calls to generated ui::page helpers, hide generated render behind doc(hidden), and let form resources participate in generated target inspection for tests.
req: canonical_authoring/005
req: dx/006
req: codegen/002
req: public_api/002
req: test/001
Expose generated ui::page as the canonical page-boundary rendering helper and move the Workout golden path and docs off beginner-visible ui::render calls.
req: public_api/002
req: codegen/002
req: canonical_authoring/006
Make the canonical v0 todo flow use one TodoRow partial shape for initial list rendering and generated keyed append/replace/remove helpers. Teach hemx-build to treat collection hosts with keyed h-for children as keyed targets, so beginner templates can keep the DRY outer slot + child partial composition.
req: canonical_authoring/002
req: canonical_authoring/003
req: examples/004
req: list/001
slhx agent