docs/language: a page for every keyword and attribute the vocabulary has

Keywords: module uses friend export internal numbers unsafe mut port bind action
reducer registry of as from def open alias component prop view (structure),
shows lasts then loads (scenes), system (ecs), dispatch (control), true false
null (operators). Attributes: @Ref @OneOf @Range @Unit @Asset @Color, @Node /
@Clip / @Material, @Tint @Derived, @Text / @Multiline, @Key, @AppendOnly /
@ByKey, @PerMap / @Chunked, @frame @max, @owns / @creates / @releases,
@deterministic @alloc_ok. Each is in tools/docgen/inventory.json; every fence
that is not marked skip parses (ludicc --fmt). annot-clearcolor's token loses its
quotes, which no reader strips.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/language/structure/kw-module.md

@@ -0,0 +1,19 @@
+---
+id: kw-module
+name: module
+category: structure
+kind: keyword
+tokens: module
+sig: module name [in layer L] [uses a, b]
+tip: Names the module a directory's files belong to; only what it exports is reachable from outside.
+order: 51
+---
+
+<code>module</code> opens a directory's barrel (<code>index.ludic</code>) and says which module every file under it belongs to. A name a module does not <code>export</code> is private to it: another module that names it is refused at compile time, which is what makes a private name safe to change. The line may place the module in a layer (<code>in layer L</code>) and say what it may reach (<code>uses</code>).
+
+```ludic
+# doc-check: skip — a module spans files
+# bank/index.ludic
+module bank uses base
+import "ledger.ludic"
+```