refactor(composition): unify capability bindings and cleanup ownership (#8441)

Bind typed service creation, observed availability and retryable cleanup in one composition owner. Reuse selected CLI/MCP factories and canonical contract groups without copying provider operation inventories.

Closes #8429. Refs #740.

Validated paired real application workflows, actual local Codex CLI Terra/high use, complete Evidence and Unknown checkpoint parity, compiler-backed import boundaries, SDK schemas and final real mixed routing. Automated review findings were fixed at their producing owners. Existing exact-base CodeQL alerts are documented on the PR under the owner-authorized unrelated-check exception; no global alerts or security rules were changed.

Assisted-by: Suika (gensokyo-skills:suika-scatter-gather-planning)

src/il2cpp/Il2cppMetadataProvider.ts

@@ -1,3 +1,4 @@
+import { IL2CPP_METADATA_PROVIDER_IDENTITY } from "./Il2CppMetadataProviderIdentity.js";
 import { isSelectedRegularFileError } from "../filesystem/RegularFile.js";
 import { Il2cppBinaryFormatFailure } from "./Il2cppBinaryFormat.js";
 import { Il2cppMetadataFormatFailure } from "./Il2cppMetadataFormat.js";
@@ -55,12 +56,6 @@ import {
   type Il2cppBinaryLink,
 } from "./Il2cppBinaryFile.js";
 
-/** Bundled format reader identity; the metadata version is a separate observed fact. */
-export const IL2CPP_METADATA_PROVIDER_IDENTITY = {
-  id: "il2cpp-metadata",
-  name: "REA IL2CPP global-metadata reader",
-  version: "1",
-} as const;
 const OPERATION = "inspect_il2cpp_metadata";
 const INPUT_BYTES = 256 * 1024 * 1024;
 // GameAssembly binaries of large games reach several hundred megabytes.