docs: Update CHANGELOG and README for deployment models and troubleshooting

- Added multi-platform deployment architecture details (Web App, PWA, DApp) to README.md.
- Included comprehensive troubleshooting guides and fix scripts in README.md.
- Enhanced CHANGELOG.md with new features, fixes, and improvements, including TypeScript error resolutions and updated documentation structure.
- Revised development setup instructions in DEV_SETUP.md to reflect changes in script usage and environment variable setup.

orchestrator/src/api/plans.ts

@@ -9,6 +9,7 @@ import type { Plan, PlanStep } from "../types/plan";
 /**
  * POST /api/plans
  * Create a new execution plan
+ * 
  * @swagger
  * /api/plans:
  *   post:
@@ -28,6 +29,11 @@ import type { Plan, PlanStep } from "../types/plan";
  *         description: Plan created
  *       400:
  *         description: Validation failed
+ * 
+ * @param req - Express request with plan data in body
+ * @param res - Express response
+ * @returns Created plan with plan_id and plan_hash
+ * @throws AppError if validation fails
  */
 export const createPlan = asyncHandler(async (req: Request, res: Response) => {
   const plan: Plan = req.body;