Merge remote-tracking branch 'origin/master' into feat/web-message-feedback-ui

Adapt to two contract changes master introduced:

- The generated Remote face now wraps every business result in
  RemoteResult, folding carrier failures into an ok:false branch instead
  of rejecting. The controller reads that envelope at its three call
  sites and maps a carrier failure onto the same settled shape the
  controls already render; three specs cover the new branch.
- Client packages split their tsconfig into host and client halves, and
  the host aggregate now compiles any test not named *.client.spec.*.
  Rename this package's specs to the client convention and drop the
  ../connection project reference, which pointed at a solution file that
  no longer carries the client sources.

Keep master's mount loop with its rollback-on-failure in api-remotes and
add messageFeedbackRemote to it.

packages/interaction/commands/src/index.ts

@@ -3,26 +3,27 @@
  * @module @deepseek-ai/dsh-commands
  */
 
-import { Context, Service } from '@deepseek-ai/cordis'
+import { Context } from '@deepseek-ai/cordis'
 import type { Agent } from '@deepseek-ai/dsh-agent'
 import { NamedEntries, ScopedLayers } from '@deepseek-ai/dsh-scope'
 import type { ScopeKey, ScopeLayer } from '@deepseek-ai/dsh-scope'
 import type { Session, SessionEvent, SessionEventMap } from '@deepseek-ai/dsh-session'
+import { GatewayService, Remote } from '@deepseek-ai/dsh-type-meta'
 import { CommandId } from './brand.ts'
+import type {
+  CommandDescriptor,
+  CommandExecution,
+  CommandInputDescriptor,
+  CommandResult,
+} from './types.ts'
 
 export { CommandId } from './brand.ts'
-export type { CommandSource, CommandSourceMap } from './types.ts'
+export type * from './types.ts'
 
 export const name = 'commands'
 
 const COMMAND_NAME = /^[a-z][a-z0-9_-]*$/u
 
-/** Immutable metadata for a command's optional unstructured input. */
-export interface CommandInputDescriptor {
-  /** Placeholder shown before the user supplies free-form input. */
-  readonly hint: string
-}
-
 /** Invocation passed to one registered command handler. */
 export interface CommandInvocation {
   /** Pairing id already written to this invocation's `command/run` event. */
@@ -35,29 +36,6 @@ export interface CommandInvocation {
   readonly signal: AbortSignal
 }
 
-/** Expected command outcome rendered directly by the dispatching UI. */
-export type CommandResult =
-  | {
-    readonly kind: 'success'
-    readonly text?: string
-    /** Earlier authoritative domain event that owns a richer presentation. */
-    readonly sourceEventSeq?: number
-  }
-  | { readonly kind: 'error'; readonly text: string }
-
-/**
- * One settled command execution: the handler's normalized result plus the
- * lifecycle pairing id minted for its `command/run`/`command/done` records,
- * so a dispatching surface can correlate the RPC-level acknowledgment with
- * the flow node those events produce.
- */
-export interface CommandExecution {
-  /** Pairing id carried by this execution's lifecycle events. */
-  readonly commandId: CommandId
-  /** The handler's normalized outcome. */
-  readonly result: CommandResult
-}
-
 /** Plugin-owned command registration. */
 export interface CommandDefinition {
   /** Lowercase command name without the leading slash. */
@@ -76,16 +54,6 @@ export interface CommandDefinition {
   readonly handler: (invocation: CommandInvocation) => CommandResult | Promise<CommandResult>
 }
 
-/** Handler-free immutable command view returned to UI adapters. */
-export interface CommandDescriptor {
-  /** Lowercase command name without the leading slash. */
-  readonly name: string
-  /** Human-readable summary used in discovery UI. */
-  readonly description: string
-  /** Optional free-form input hint advertised to capable clients. */
-  readonly input?: CommandInputDescriptor
-}
-
 /** Syntactically valid slash command before registry resolution. */
 export interface ParsedCommand {
   /** Lowercase command name without the leading slash. */
@@ -254,7 +222,7 @@ function normalizeResult(command: string, value: unknown): CommandResult {
  * registered through a command-injected child of an agent context shadow
  * globals for that agent.
  */
-export class CommandService extends Service {
+export class CommandService extends GatewayService {
   private readonly layers = new ScopedLayers(
     scope => new CommandLayer(scope),
     () => { this.notifyChange() },
@@ -288,6 +256,7 @@ export class CommandService extends Service {
    * @param agent - exact receiving agent and scoped-layer key.
    * @returns name-sorted descriptors after scoped shadowing.
    */
+  @Remote
   list(agent: Agent): readonly CommandDescriptor[] {
     return Object.freeze([...this.view(agent).values()]
       .map(command => command.descriptor)
@@ -324,6 +293,7 @@ export class CommandService extends Service {
    * @returns the settled execution (result + lifecycle pairing id), or
    *   `undefined` when syntax or name does not resolve.
    */
+  @Remote
   async execute(
     agent: Agent,
     line: string,