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/pty-deps.ts

@@ -147,7 +147,7 @@ function isPluginRoot(dir: string): boolean {
   if (!existsSync(file)) return false
   try {
     const parsed = JSON.parse(readFileSync(file, 'utf8')) as { name?: unknown }
-    return parsed.name === 'dsh-better-sidebar'
+    return parsed.name === 'dsh-apes-sidebar'
   } catch {
     return false
   }