chore: fork dsh-better-sidebar v0.18.0 as dsh-apes-sidebar v1.0.0

- Rename dsh-better-sidebar → dsh-apes-sidebar across 74 files (262 occurrences)
- Bump version 0.18.0 → 1.0.0 (package.json + dsh.plugin.json + SIDEBAR_SERVICE_VERSION)
- Add forkedFrom metadata to package.json (upstream pin: commit 9e1a034)
- Add fork notice banner to README.md (MIT attribution preserved)
- Keep original MIT copyright (c) 2026 dsh-external
- Full gate green: typecheck + build (6 bundles) + test (1241 passed / 9 skipped)

src/client/chunks/editor.tsx

@@ -1,7 +1,7 @@
 /**
  * Lazy chunk entry: the code/markdown/html text editor (CodeMirror 6 + the
  * language packages). Built as `lib/client-editor.js` and registered under
- * `dsh-better-sidebar/editor` — fetched only when a text file is first
+ * `dsh-apes-sidebar/editor` — fetched only when a text file is first
  * opened (see chunk-loader.ts and docs/plans/2026-08-12-lazy-chunks-design.md).
  * Never import this module from the core bundle: it pulls CodeMirror into
  * the startup path.

src/client/chunks/terminal.tsx

@@ -1,7 +1,7 @@
 /**
  * Lazy chunk entry: the interactive terminal (xterm + fit addon). Built as
  * `lib/client-terminal.js` and registered under
- * `dsh-better-sidebar/terminal` — fetched only when a terminal tab is first
+ * `dsh-apes-sidebar/terminal` — fetched only when a terminal tab is first
  * opened (see chunk-loader.ts and docs/plans/2026-08-12-lazy-chunks-design.md).
  * Never import this module from the core bundle: it pulls xterm (and its
  * stylesheet) into the startup path.