# Implementation Plan: Redesign - Unisono Application

**Branch**: `003-redesign-you-find` | **Date**: суббота, 11 октября 2025 г. | **Spec**: spec.md
**Input**: Feature specification from `/specs/[###-feature-name]/spec.md`

**Note**: This template is filled in by the `/speckit.plan` command. See `.specify/templates/commands/plan.md` for the execution workflow.

## Summary

Redesign the Unisono application UI to be responsive across devices, adhere to Material Design 3 guidelines, incorporate consistent branding ("Unisono" app name, logo, favicon), improve readability by removing "Session: " prefixes and avoiding technical jargon, streamline the interface by hiding session status, and ensure basic accessibility. The redesign will preserve existing user flows and business logic, with a performance goal of mobile page load under 2 seconds on 3G.

## Technical Context

**Language/Version**: Node.js (LTS), TypeScript 5.x  
**Primary Dependencies**: React, Material-UI / MUI  
**Storage**: Browser Local Storage (for session state, backend is stateless)  
**Testing**: npm test  
**Target Platform**: Web (responsive design for desktop, tablet, mobile)
**Project Type**: Web application  
**Performance Goals**: Mobile page load under 2 seconds on 3G  
**Constraints**: Preserve existing user flow and logic, Material Design 3 guidelines, specific color preservation, copywriting rules, hiding session status, text formatting.  
**Scale/Scope**: Redesign of existing application UI for responsiveness, branding, readability, and streamlined interface.

## Constitution Check

*GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.*

### I. Defined Technology Stack
-   **Backend**: Node.js - Consistent.
-   **Frontend**: React - Consistent.
-   **UI Framework**: Material Design 3 (Material-UI / MUI) - Consistent (FR-001, FR-013).
-   **Containerization**: Docker - Consistent (implied by project structure).
    *Status: Pass*

### II. UI/UX Consistency
All user interfaces MUST adhere to Material Design 3 principles and components. - Consistent (FR-001, FR-013).
    *Status: Pass*

### III. Container-First Development
All application services and development environments MUST run within Docker containers. - Consistent (implied by project structure).
    *Status: Pass*

### IV. Test-Driven Development (TDD)
New features and bug fixes MUST follow a Test-Driven Development approach. - Consistent (implied by project structure and general best practices).
    *Status: Pass*

### V. API-First Design
The backend and frontend are decoupled and communicate via a well-defined API contract. The API contract SHOULD be defined and reviewed before implementation begins. - Consistent (implied by project structure).
    *Status: Pass*

## Project Structure

### Documentation (this feature)

```
specs/003-redesign-you-find/
├── plan.md              # This file (/speckit.plan command output)
├── research.md          # Phase 0 output (/speckit.plan command)
├── data-model.md        # Phase 1 output (/speckit.plan command)
├── quickstart.md        # Phase 1 output (/speckit.plan command)
├── contracts/           # Phase 1 output (/speckit.plan command)
└── tasks.md             # Phase 2 output (/speckit.tasks command - NOT created by /speckit.plan)
```

### Source Code (repository root)

```
backend/
├── src/
│   ├── index.ts
│   ├── routes/
│   │   └── sessions.ts
│   ├── services/
│   │   └── LLMService.ts
│   └── ws/
│       └── index.ts
└── tests/
    ├── LLMService.refactor.test.ts
    └── sessions.test.ts

frontend/
├── src/
│   ├── App.tsx
│   ├── index.tsx
│   ├── theme.ts
│   ├── components/
│   │   ├── DesireForm.test.tsx
│   │   ├── DesireForm.tsx
│   │   ├── ResultsDisplay.refactor.test.tsx
│   │   └── ResultsDisplay.tsx
│   ├── hooks/
│   │   └── useSession.ts
│   ├── pages/
│   │   ├── CreateSession.test.tsx
│   │   ├── CreateSession.tsx
│   │   └── SessionPage.tsx
│   └── services/
│       └── websocket.ts
└── tests/
```

**Structure Decision**: The project utilizes a web application structure with separate `backend` and `frontend` directories. The redesign primarily impacts the `frontend` directory.

## Complexity Tracking

*Fill ONLY if Constitution Check has violations that must be justified*

| Violation | Why Needed | Simpler Alternative Rejected Because |
|-----------|------------|-------------------------------------|
| [e.g., 4th project] | [current need] | [why 3 projects insufficient] |
| [e.g., Repository pattern] | [specific problem] | [why direct DB access insufficient] |