Address code review feedback: fix CI paths and organize docs

- Fix CI workflow working directory inconsistency
  - Change working-directory from packages/react-on-rails-pro-node-renderer to .
  - Ensures yarn workspace commands run from correct location

- Move migration documentation to /analysis/monorepo directory
  - MONOREPO_MIGRATION_CHECKLIST.md
  - MONOREPO_MIGRATION_STATUS.md
  - YALC_ALTERNATIVES_ANALYSIS.md
  - Per CLAUDE.md guidelines for analysis documents

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: justin808

.github/workflows/pro-test-package-and-gem.yml

@@ -219,7 +219,7 @@ jobs:
           key: v4-pro-package-node-modules-cache-${{ hashFiles('react_on_rails_pro/yarn.lock') }}
 
       - name: Install Node modules with Yarn for Pro package
-        working-directory: packages/react-on-rails-pro-node-renderer
+        working-directory: .
         run: |
           sudo yarn global add yalc
           yarn install --frozen-lockfile --no-progress --no-emoji