refactor: retire ADR-0019 cutover scaffolding (#2081)

Author: thymikee

AGENTS.md

@@ -14,7 +14,6 @@ task procedures only when needed:
 | Selector capture, polling, or interaction fast paths | `docs/agents/selector-capture.md` |
 | Adding or changing a CLI flag | `docs/agents/cli-flags.md` |
 | Opening or reviewing a PR | `docs/agents/pull-requests.md` |
-| Migrating an ADR 0019 command | `docs/agents/adr-0019-unit.md` |
 | Running against a real device | `docs/agents/device-verification.md` |
 | Issues, PRDs, and triage labels | `docs/agents/issue-tracker.md`, `docs/agents/triage-labels.md` |
 | Web backend setup or diagnostics | `docs/agents/web-backend.md` |

docs/adr/0019-request-bound-platform-runtime.md

@@ -335,9 +335,9 @@
       "types": "./src/facades/progress.ts",
       "default": "./src/facades/progress.ts"
     },
-    "./record-runtime-cutover": {
-      "types": "./src/record-runtime-cutover.ts",
-      "default": "./src/record-runtime-cutover.ts"
+    "./record-runtime-execution": {
+      "types": "./src/record-runtime-execution.ts",
+      "default": "./src/record-runtime-execution.ts"
     },
     "./recording": {
       "types": "./src/facades/recording.ts",

docs/agents/adr-0019-unit.md

@@ -6,7 +6,7 @@ import { assertCommandPlatformExecution } from './command-platform-execution.ts'
 describe('command platform execution declaration', () => {
   test.each([
     { kind: 'none' },
-    { kind: 'legacy' },
+    { kind: 'host' },
     { kind: 'inventory', use: inventoryUse },
     { kind: 'device-runtime', use: { required: ['capture'], preferred: [] } },
     {
@@ -20,6 +20,7 @@ describe('command platform execution declaration', () => {
   test.each([
     {},
     { kind: 'none', use: inventoryUse },
+    { kind: 'legacy' },
     { kind: 'legacy', use: inventoryUse },
     { kind: 'inventory' },
     { kind: 'inventory', use: inventoryUse, legacy: true },

packages/contracts/package.json

@@ -4,7 +4,6 @@ import { runtimeUseIdentity } from './platform-runtime-use.ts';
 
 export type CommandPlatformExecution =
   | Readonly<{ kind: 'none' }>
-  | Readonly<{ kind: 'legacy' }>
   /**
    * Host-scoped platform work (ADR 0019): diagnostics, owner cleanup, or managed tooling runs
    * through a neutral typed host service. The command binds no device runtime as its own
@@ -27,7 +26,6 @@ export function assertCommandPlatformExecution(
   const declaration = value as Record<string, unknown>;
   const keys = Object.keys(declaration).sort();
   if (declaration['kind'] === 'none' && sameKeys(keys, ['kind'])) return;
-  if (declaration['kind'] === 'legacy' && sameKeys(keys, ['kind'])) return;
   if (declaration['kind'] === 'host' && sameKeys(keys, ['kind'])) return;
   if (
     declaration['kind'] === 'inventory' &&
@@ -110,6 +108,6 @@ function sameKeys(actual: readonly string[], expected: readonly string[]): boole
 
 function invalidPlatformExecution(): TypeError {
   return new TypeError(
-    'Command platform execution must declare exactly one of none, legacy, host, inventory, or device-runtime',
+    'Command platform execution must declare exactly one of none, host, inventory, or device-runtime',
   );
 }

packages/contracts/src/command-platform-execution.test.ts

@@ -1,6 +1,6 @@
 import assert from 'node:assert/strict';
 import { test } from 'vitest';
-import { assertRecordRuntimeExecution } from './record-runtime-cutover.ts';
+import { assertRecordRuntimeExecution } from './record-runtime-execution.ts';
 import {
   screenRecordingRuntimePlanUses,
   resolveScreenRecordingRuntimePlan,