refactor: name front door defaults

packages/examples/acp-demo/src/index.ts

@@ -18,6 +18,7 @@ import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
 import UserInteractionService from '@deepseek-ai/dsh-user-interaction'
 
 export const name = 'acp-demo'
+const DEFAULT_PERSISTENCE_ROOT = './.sessions'
 
 /**
  * App config: the swappable per-deployment values. `model` configures the
@@ -54,9 +55,7 @@ export const Config: z<Config> = z.object({
   // schemastery's native [] default would read as an invalid configured list.
   toolOrder: z.array(z.string()).default(undefined as unknown as string[]),
   tools: ToolRegistry.Config,
-  // TODO(single-default-literal): share this schema default and the defensive
-  // apply() fallback through one named constant while retaining both boundaries.
-  persistenceRoot: z.string().default('./.sessions'),
+  persistenceRoot: z.string().default(DEFAULT_PERSISTENCE_ROOT),
   skills: agentCore.SkillConfigSchema,
 })
 /* jscpd:ignore-end */
@@ -76,6 +75,6 @@ export function apply(ctx: Context, config: Config): void {
     ...config.skills !== undefined ? { skills: config.skills } : {},
   })
   ctx.plugin(UserInteractionService)
-  ctx.plugin(SessionPersistenceJsonl, { root: config.persistenceRoot ?? './.sessions' })
+  ctx.plugin(SessionPersistenceJsonl, { root: config.persistenceRoot ?? DEFAULT_PERSISTENCE_ROOT })
   ctx.plugin(acp, { model: config.model })
 }

packages/examples/stdio-demo/src/index.ts

@@ -23,6 +23,8 @@ import * as toolAskUser from '@deepseek-ai/dsh-tool-ask-user'
 import * as uiStdio from '@deepseek-ai/dsh-stdio'
 
 export const name = 'stdio-demo'
+const DEFAULT_PERSISTENCE_ROOT = './.sessions'
+const DEFAULT_WELCOME = 'ready.'
 
 /**
  * App config: the swappable per-demo values, each routed to where the app wires
@@ -65,10 +67,8 @@ export const Config: z<Config> = z.object({
   // schemastery's native [] default would read as an invalid configured list.
   toolOrder: z.array(z.string()).default(undefined as unknown as string[]),
   tools: ToolRegistry.Config,
-  // TODO(single-default-literal): share these schema defaults and defensive
-  // apply() fallbacks through named constants while retaining both boundaries.
-  persistenceRoot: z.string().default('./.sessions'),
-  welcome: z.string().default('ready.'),
+  persistenceRoot: z.string().default(DEFAULT_PERSISTENCE_ROOT),
+  welcome: z.string().default(DEFAULT_WELCOME),
   skills: agentCore.SkillConfigSchema,
   resumeSessionId: z.string(),
 })
@@ -85,10 +85,10 @@ export function apply(ctx: Context, config: Config): void {
   const resumeSessionId = config.resumeSessionId === '' ? undefined : config.resumeSessionId
   const sessionId = SessionId(resumeSessionId ?? `main-session-${randomUUID()}`)
   ctx.plugin(ConsoleExporter)
-  ctx.plugin(SessionPersistenceJsonl, { root: config.persistenceRoot ?? './.sessions' })
+  ctx.plugin(SessionPersistenceJsonl, { root: config.persistenceRoot ?? DEFAULT_PERSISTENCE_ROOT })
   ctx.plugin(UserInteractionService)
   ctx.plugin(uiStdio, {
-    welcome: config.welcome ?? 'ready.',
+    welcome: config.welcome ?? DEFAULT_WELCOME,
     sessionId,
   })
   ctx.plugin(agentCore, {