docs(requirements): split diagnostics rows

Add explicit northstar ring fields to diagnostics requirements and split editor overlay and rust-analyzer boundaries without changing behavior.

req: diagnostics/001

req: diagnostics/002

req: diagnostics/003

req: diagnostics/004

req: diagnostics/005

req: diagnostics/006

req: diagnostics/007

req: diagnostics/008

AGENTS.md

@@ -63,7 +63,7 @@ Keep it stable. Prefer pointers to canonical sources over copied structure, file
 - Use `cargo run -p hemx-xtask -- app new PATH` for the generic page/form/keyed-row/notice starter, and `cargo run -p hemx-xtask -- app new --mobile PATH` for the phone-first starter with host capabilities, recovery truth, and release-kit commands; do not treat it as a mobile framework or store-submission bot. req: ceremony/005 req: ceremony/006 req: ceremony/007
 - The public component-reuse explanation lives in `docs/recipes/reusable-partials.md`; do not grow a client component framework to explain partial composition.
 - The stable public `.heml` authoring surface lives in `docs/hemplate-syntax.md`; Hemlate examples must use that real hemplate syntax, not Vue/Handlebars sketches. hemx-build consumes hemplate Surface facts and must not grow an independent `.heml` parser or CSS-path identity model. Generated resources, form/handle metadata, atoms, and event constants come from hemx-build facts, not hand-written app plumbing. Forms remain HTML-shaped, checked against user-authored Rust domain types, parsed through `FormValue`, and manipulated through generated form/control ids rather than selectors. req: surface/001 req: surface/002 req: surface/003 req: surface/004 req: surface/005 req: surface/006 req: surface/007 req: surface/008 req: surface/009 req: surface/010 req: codegen/001 req: codegen/003 req: codegen/004 req: codegen/005 req: codegen/006 req: form/001 req: form/004 req: form/007 req: form/008 req: form_effects/001 req: form_effects/002 req: form_effects/003
-- Optional `.heml` editor overlays must share authority with `hemx-build` diagnostics and `docs/hemplate-syntax.md`; `hemx-lsp` owns editor protocol glue for diagnostics/completion/hover and derive-known template facts, while VS Code/Cursor/Neovim keep normal HTML/tree-sitter tooling. Do not create a second template language, selector model, formatter, Rust type system, or custom editor framework. req: diagnostics/004 req: diagnostics/005 req: diagnostics/006
+- Optional `.heml` editor overlays must share authority with `hemx-build` diagnostics and `docs/hemplate-syntax.md`; `hemx-lsp` owns editor protocol glue for diagnostics/completion/hover and derive-known template facts, while VS Code/Cursor/Neovim keep normal HTML/tree-sitter tooling. Do not create a second template language, selector model, formatter, Rust type system, or custom editor framework. req: diagnostics/004 req: diagnostics/005 req: diagnostics/006 req: diagnostics/007 req: diagnostics/008
 - JS runtime changes must preserve root-scoped lookup, delegated listeners, postcard EffectBatch application, fail-closed request handling, transactional/recoverable failure behavior, root-scoped error outlets, and tiny pending/failure/trigger-timing conventions without selectors, VDOM, expressions, or per-node listeners. req: runtime/001 req: runtime/002 req: runtime/003 req: runtime/005 req: runtime/006 req: failure/001 req: failure/002 req: failure/003 req: failure/004 req: failure/005 req: failure/006 req: convention/001 req: convention/003 req: convention/005 req: convention/007
 - Opaque island JavaScript is a leaf adapter for high-frequency local behavior only; use native events/generated helpers at the boundary and do not introduce a component runtime, client state graph, VDOM, selector interop, or second UI model. req: canonical_authoring/017 req: interop/001 req: interop/002 req: interop/003 req: interop/006 req: interop/007 req: interop/008 req: interop/009 req: interop/010 req: interop/011 req: interop/012
 - Host capability adapters must stay at the `hemx-host` boundary: typed capabilities use fire/request/stream/schedule shapes; adapters may call host APIs and return host events, but they must not mutate DOM or own app/domain state. req: host/001 req: host/002

REQUIREMENTS.md

@@ -787,22 +787,28 @@ what a valid business email is. [north_star]
 ## diagnostics
 
 ### req: diag/001
-001	Every compile-time error must point to both sides of the mismatch when possible: the Rust handler span and the template Surface span.
+0	001	Every compile-time error must point to both sides of the mismatch when possible: the Rust handler span and the template Surface span. [north_star]
 
 ### req: diag/002
-002	Diagnostics must include a suggested fix for common cases: missing key, unknown slot, missing form field, optionality mismatch, handler param mismatch, wrong keyed slot type.
+0	002	Diagnostics must include a suggested fix for common cases: missing key, unknown slot, missing form field, optionality mismatch, handler param mismatch, wrong keyed slot type. [north_star]
 
 ### req: diag/003
-003	Internal terms (`ResourceId`, `ScopeKey`, `EffectBatch`) must not appear in beginner-facing diagnostics unless `--verbose` is enabled.
+0	003	Internal terms (`ResourceId`, `ScopeKey`, `EffectBatch`) must not appear in beginner-facing diagnostics unless `--verbose` is enabled. [north_star]
 
 ### req: diag/004
-004	Optional `.heml` editor overlays must treat `hemx-build` diagnostics and the documented `.heml` syntax surface as authority; they may present compiler-shaped diagnostics, completion, hover, and navigation, but must not own a second template language, formatter, selector model, or custom editor framework. [north_star]
+0	004	Optional `.heml` editor overlays treat `hemx-build` diagnostics and documented `.heml` syntax as authority. They may present compiler-shaped diagnostics, completion, hover, and navigation. [north_star]
+
+### req: diag/007
+0	007	Optional `.heml` editor overlays must not own a second template language, formatter, selector model, or custom editor framework. [north_star]
 
 ### req: diag/005
-005	`.heml` editor startup for VS Code, Cursor, and Neovim must preserve normal HTML or tree-sitter HTML highlighting while using repo-owned `hemx-build` diagnostics through `hemx-lsp` as the shared authority for hemplate-specific feedback. [north_star]
+0	005	`.heml` editor startup for VS Code, Cursor, and Neovim must preserve normal HTML or tree-sitter HTML highlighting while using repo-owned `hemx-build` diagnostics through `hemx-lsp` as the shared authority for hemplate-specific feedback. [north_star]
 
 ### req: diag/006
-006	`hemx-lsp` completion and hover for `.heml` Rust-shaped expressions must use hemx-owned compiler/build facts for derive-known template context fields and simple `h-for` locals; missing or stale facts must fall back to syntax/document completions without proxying rust-analyzer or owning a second Rust type system. [north_star]
+0	006	`hemx-lsp` completion and hover for `.heml` Rust-shaped expressions uses hemx-owned compiler/build facts for derive-known template context fields and simple `h-for` locals. Missing or stale facts fall back to syntax/document completions. [north_star]
+
+### req: diag/008
+0	008	`hemx-lsp` must not proxy rust-analyzer or own a second Rust type system. [north_star]
 
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