refactor(examples): rename coding-agent leaf to repl-agent

Name the runnable leaf for the line-oriented front door it owns, matching the existing tui-agent and acp-agent organization. Move the complete config, Code Mode overlay, tests, metadata, and generated composition graph together, then update every loader path and repository reference.

Keep the shared model identity independent of its terminal front door by phrasing the persona as a coding-agent role rather than retaining the retired leaf name. Regenerate graph and tool catalogs and re-record each affected bilingual pair so derived documentation cannot point at the removed path.

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

@@ -2,7 +2,7 @@
 /**
  * Boot a stdio app from a leaf `cordis.yml`; usage is `dsh-stdio-demo [config]`, defaulting to the
  * cwd file. Shared `.env` loading, fail-loud Loader guards, and settled-tree boot live in
- * dsh-app-boot. The echo and coding-agent demos invoke this bin with their own leaf configs.
+ * dsh-app-boot. The echo-agent and repl-agent demos invoke this bin with their own leaf configs.
  * @module @deepseek-ai/dsh-stdio-demo/bin
  */
 

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

@@ -174,7 +174,7 @@ export function composeTerminalApp(ctx: Context, config: Config, isTTY: boolean)
 
 /** Compose the configured terminal front door with the agent app. */
 /* v8 ignore start -- production stream capability wiring; composeTerminalApp is unit-covered,
-   and the coding-agent PTY smoke covers the interactive process path */
+   and the repl-agent PTY smoke covers the interactive process path */
 export function apply(ctx: Context, config: Config): void {
   composeTerminalApp(ctx, config, process.stdin.isTTY && process.stdout.isTTY)
 }