feat(companion): add mobile runtime skeleton shell templates

docs/api/PROTOCOL.md

@@ -1866,7 +1866,7 @@ For more implementation details, see:
 - Companion release bundle helper: `src/companion/releaseBundle.ts` (writes bootstrap JSON + launcher script + README + `CHECKSUMS.sha256` + `RELEASE_MANIFEST.json`; optional `CHECKSUMS.sha256.sig` when a signing key is provided. Launcher performs checksum verification before exec.)
 - Companion release bundle verifier: `src/companion/releaseVerify.ts` (validates `CHECKSUMS.sha256` and optional signature metadata against a provided public key)
 - Companion release automation pipeline: `src/companion/releasePipeline.ts` + `scripts/build-companion-release-bundle.ts` (build-and-verify workflow for deterministic companion artifact generation)
-- Companion shell template helper: `src/companion/shellTemplate.ts` (writes platform-native starter template files for `macos`, `ios`, and `android` shell scaffolding)
+- Companion shell template helper: `src/companion/shellTemplate.ts` (writes platform-native starter template files for `macos`, `ios`, and `android` shell scaffolding, including iOS/Android runtime skeletons for `node.register` + status/location/push + `agent.send`)
 - Companion macOS menu-bar app scaffold helper: `src/companion/macosMenuBarApp.ts` (writes runnable Swift Package menu-bar app starter surface)
 - Companion reference app exporter: `src/companion/referenceApps.ts` + `scripts/export-companion-reference-apps.ts` (regenerates in-repo platform starter app directories, including `apps/companion/macos-app`)
 - CI artifact workflow: `.github/workflows/companion-release-bundle.yml` (manual dispatch bundle build/verify/upload pipeline)