Load TypeScript components from their selected source

architecture.md

@@ -201,6 +201,30 @@ hidden inside library objects that accumulate. One exception: metadata an
 author declares at module evaluation, about a value the author owns, may live
 on that value.
 
+Ordinary TypeScript components use `ComponentModuleLoader`, the same-name
+interface and scoped Context in `@executablemd/core/api`, with stable name
+`@executablemd/core/ComponentModuleLoader` and default `undefined`. Canonical
+setup captures its bound `load(source, origin)` before profile resolution.
+Profile and durable imports pass exact selected direct bytes and the logical
+file URL; core still validates the complete namespace and owns durable identity
+and admission. Runtime-named CLI entrypoints install their matching core
+`host/deno`, `/node` or `/bun` provider; compiled installs Deno's.
+Embeddings explicitly use the matching exported installer. Eval compilation is
+a separate service. Absent installation refuses TypeScript loading before native
+work; Markdown and registered functions are unaffected.
+
+These adapters transform direct TypeScript in memory, preserving module exports,
+logical origin, source maps and ordinary live dependencies without staging files
+or permission grants. Deno and Node retain owned native hooks; Bun retains an
+owned JavaScript object URL. Each load has a separate canonical-owned scope-eval
+worker, retaining resources beyond materialization and namespace return without
+serializing independent loads. Before namespace transfer, cancellation halts and
+joins that worker’s hosting task; canonical completion owns transferred hosts.
+Adapter teardown joins native import work before deregistration or revocation.
+The transformer is imported lazily by the actual load operation; neutral imports
+and adapter installation evaluate no Babel code. Retained imports execute retained direct text after file removal;
+they do not snapshot dependencies or repeat completed effects.
+
 A callback registered with something outside the process — a listener on a
 socket, a child process, a stream or a DOM target — is state of exactly this
 kind, and the source it is attached to knows nothing about the operation that

deno.json

@@ -50,7 +50,8 @@
     "unist-util-select": "npm:unist-util-select@^5",
     "zod": "npm:zod@^4.3.6",
     "mdast-util-to-string": "npm:mdast-util-to-string@^4",
-    "yq.rs": "npm:yq.rs@0.1.4"
+    "yq.rs": "npm:yq.rs@0.1.4",
+    "@executablemd/test-support/host": "./packages/test-support/host.ts"
   },
   "tasks": {
     "xmd": "deno run --allow-all packages/cli/src/deno.ts",