refactor: dissolve packages/internal into scripts/, reorganize CLI into src/lib/, and wire stanza remove codemod revert

- Delete `packages/internal` workspace package — `registry-build.ts` and `module-new.ts` move to top-level `scripts/` (no `package.json`, not shipped); `pnpm registry:build` and `pnpm module:new` scripts updated in root `package.json` and `turbo.json`; CLAUDE.md / TODO.md references updated
- Relocate CLI internals from `apps/cli/src/` → `apps/cli/src/lib/` — `codemod-runner.ts`, `manifest.ts`, `region-tracker.ts`, `registry-loader.ts`, `wizard.ts`; all intra-CLI imports updated to `@/lib/*` path alias via tsconfig `paths`; add `@types/bun` to CLI devDependencies
- `stanza remove` now dispatches `revertCodemods()` as step 1 (before declarative cleanup) — re-loads the module adapter from the registry, calls imperative reverts while framework files are still intact, then sweeps remaining region claims; fixes `wrap-root-layout` / `re-export` regions previously left as "needs manual cleanup" despite shipping working reverts

pnpm-lock.yaml

@@ -8,9 +8,21 @@ importers:
 
   .:
     devDependencies:
+      '@clack/prompts':
+        specifier: ^1.4.0
+        version: 1.4.0
+      '@stanza/registry':
+        specifier: workspace:*
+        version: link:packages/registry
       '@types/node':
         specifier: ^25.9.1
         version: 25.9.1
+      kleur:
+        specifier: ^4.1.5
+        version: 4.1.5
+      mri:
+        specifier: ^1.2.0
+        version: 1.2.0
       oxfmt:
         specifier: ^0.51.0
         version: 0.51.0
@@ -48,6 +60,9 @@ importers:
         specifier: ^7.8.0
         version: 7.8.0
     devDependencies:
+      '@types/bun':
+        specifier: ^1.3.14
+        version: 1.3.14
       '@types/node':
         specifier: ^25.9.1
         version: 25.9.1
@@ -208,31 +223,6 @@ importers:
         specifier: ^6.0.3
         version: 6.0.3
 
-  packages/internal:
-    dependencies:
-      '@clack/prompts':
-        specifier: ^1.4.0
-        version: 1.4.0
-      '@stanza/registry':
-        specifier: workspace:*
-        version: link:../registry
-      kleur:
-        specifier: ^4.1.5
-        version: 4.1.5
-      mri:
-        specifier: ^1.2.0
-        version: 1.2.0
-    devDependencies:
-      '@types/bun':
-        specifier: ^1.3.14
-        version: 1.3.14
-      '@types/node':
-        specifier: ^25.9.1
-        version: 25.9.1
-      typescript:
-        specifier: ^6.0.3
-        version: 6.0.3
-
   packages/registry:
     dependencies:
       zod: