Refactor Codex Issue Plan-Execute Skill Documentation and CLI Options

- Deleted obsolete INDEX.md and OPTIMIZATION_SUMMARY.md files, consolidating documentation for improved clarity and organization.
- Removed skipGitRepoCheck option from CLI execution parameters to streamline command usage.
- Updated CLI executor utilities to automatically skip git repository checks, allowing execution in non-git directories.
- Enhanced documentation with new ARCHITECTURE.md and INDEX.md files for better navigation and understanding of the system architecture.
- Created CONTENT_MIGRATION_REPORT.md to verify zero content loss during the consolidation process.

ccw/src/commands/cli.ts

@@ -138,7 +138,6 @@ interface CliExecOptions {
   base?: string; // Review changes against base branch
   commit?: string; // Review changes from specific commit
   title?: string; // Optional title for review summary
-  skipGitRepoCheck?: boolean; // Skip git repository check (codex only)
   // Template/Rules options
   rule?: string; // Template name for auto-discovery (defines $PROTO and $TMPL env vars)
   // Output options
@@ -1007,8 +1006,7 @@ async function execAction(positionalPrompt: string | undefined, options: CliExec
       uncommitted,
       base,
       commit,
-      title,
-      skipGitRepoCheck
+      title
       // Rules are now concatenated directly into prompt (no env vars)
     }, onOutput); // Always pass onOutput for real-time dashboard streaming