# Product Requirements Document (PRD) - Angular Clarity Boilerplate

## 1. Product Vision

To provide a robust, scalable, and feature-rich boilerplate that serves as a foundational template for building modern, enterprise-grade web applications using Angular and the VMware Clarity Design System. The vision is to accelerate the development lifecycle by offering a pre-configured, best-practice project structure.

## 2. Target Audience

The primary target audience consists of **Angular developers and development teams** who require a standardized, efficient, and consistent starting point for new projects. This includes:

* **Enterprise Development Teams:** Teams that need to maintain a consistent look and feel across multiple applications.
* **Independent Developers:** Individuals looking to quickly bootstrap new projects without spending significant time on initial setup and configuration.

## 3. User Stories (Developer Stories)

### User Story 1: Quick Project Initialization
- **As a developer, I want to clone the repository and run `npm install` and `ng serve` to get a live development server running, so that I can bypass manual setup and start building features immediately.**
- **Acceptance Criteria:**
    - Given I have Node.js and Angular CLI installed,
    - When I clone the repository, install dependencies, and run the start command,
    - Then the application compiles successfully and is accessible in my browser at `localhost:4200`.

### User Story 2: Add a New Feature
- **As a developer, I want to create a new lazy-loaded feature module with its own components and routing, so that I can add new sections to the application in a scalable way.**
- **Acceptance Criteria:**
    - Given the boilerplate is running,
    - When I use the Angular CLI to generate a new module and add it to the main routing configuration,
    - Then I can navigate to the new feature's route, and its components are rendered correctly.

### User Story 3: Utilize Shared Components
- **As a developer, I want to use a component from the `SharedModule` within a new feature module, so that I can reuse common UI elements and maintain consistency.**
- **Acceptance Criteria:**
    - Given I have a new feature module,
    - When I import the `SharedModule` into my feature module,
    - Then I can use the shared components (e.g., a custom card or loader) in my feature's templates without errors.

## 4. Functional Requirements

- **FR-001: Pre-configured Angular Environment:** A ready-to-use Angular CLI project with all necessary dependencies and build configurations.
- **FR-002: Clarity Design System Integration:** Full integration of Clarity UI components and styles, ready for immediate use.
- **FR-003: Scalable Architecture:** A modular structure featuring a `CoreModule` for singleton services and a `SharedModule` for reusable UI components, directives, and pipes.
- **FR-004: Responsive Layout:** A default application shell with a responsive header, navigation sidebar, and main content area.
- **FR-005: Routing:** A pre-configured routing module with examples of lazy-loaded feature modules.
- **FR-006: Theming:** Basic support for Clarity's light and dark themes.

## 5. Non-Functional Requirements

- **NFR-001: Performance:** The initial boilerplate should be lightweight, ensuring fast development server startup times and optimized production builds.
- **NFR-002: Usability (Developer Experience):** The codebase must be clean, well-commented, and logically organized to provide an excellent developer experience.
- **NFR-003: Maintainability:** The modular architecture must facilitate easy updates to dependencies and allow for the addition of new features without introducing breaking changes to the core structure.
- **NFR-004: Scalability:** The architecture is designed to support the growth of large, enterprise-scale applications.
- **NFR-005: Extensibility:** The boilerplate should be easy to customize and extend with additional libraries, modules, and configurations as per project-specific needs.

## 6. Out of Scope

The following features and functionalities are explicitly out of scope for the boilerplate:

-   **Backend Implementation:** This is a frontend-only boilerplate and does not include any backend code or database.
-   **Authentication/Authorization Logic:** While the architecture supports the implementation of security features, no pre-built authentication or authorization logic is included.
-   **State Management:** The boilerplate does not include a state management library (e.g., NgRx, Akita) by default, allowing developers to choose the best solution for their needs.
-   **Business Logic:** No specific business logic or application features are included beyond the basic structural components.
-   **CI/CD Pipelines:** While the project is ready for CI/CD, no pre-configured pipelines are included.

---

## PRD UPDATE - 2025-10-10 05:58:15


---
## Product Requirements Document (PRD) - Password Generator Project
**Generated:** 2025-10-10 06:15:00

### 1. Executive Summary - Password Generator
The Password Generator is a web-based application designed to provide users with a secure, customizable, and easy-to-use tool for creating strong, unique passwords. It leverages an existing Angular Clarity Boilerplate for a robust frontend experience and integrates with a dedicated, cryptographically secure backend for password generation. The primary goal is to enhance user online security by simplifying the creation of complex passwords.

### 2. Product Vision & Strategy - Password Generator
**Product Vision:** To empower every internet user with the ability to effortlessly generate strong, unique, and secure passwords, thereby significantly reducing the risk of online security breaches stemming from weak or reused credentials.
**Strategic Goals:**
*   Achieve best-in-class security for password generation.
*   Provide an intuitive and highly customizable user experience.
*   Ensure high availability and performance of the service.
*   Build a foundation for potential future security-focused tools.
**Success Metrics:**
*   **User Adoption:** Number of unique users generating passwords.
*   **Satisfaction:** High user ratings/feedback on ease of use and perceived security.
*   **Security Audit Results:** Successful completion of security audits with minimal or no critical vulnerabilities.
*   **Performance:** Average password generation time (e.g., <500ms).
*   **Retention:** Repeat usage of the tool.

### 3. Target Users & Personas - Password Generator
**Primary User Persona: Security-Conscious User "Ava"**
*   **Demographics:** 25-55 years old, uses multiple online services (banking, social media, work).
*   **Needs:** Requires strong, unique passwords for various accounts. Often struggles to create and remember complex passwords manually. Values security but prioritizes convenience.
*   **Pain Points:** Password fatigue, difficulty adhering to complex password policies (e.g., specific character types, length), fear of using insecure generation tools.
*   **Goal with Product:** Quickly generate a highly secure, customized password that meets specific service requirements, and easily copy it for use.
**Secondary User Persona: Developer/IT Professional "Ben"**
*   **Demographics:** 22-60 years old, often manages multiple systems or assists others with password hygiene.
*   **Needs:** Needs a reliable, auditable, and highly configurable password generation tool for personal and professional use. May integrate it into workflows or recommend it.
*   **Pain Points:** Lack of trust in generic online generators, desire for specific character exclusion/inclusion, need for assurance of true randomness.
*   **Goal with Product:** Utilize advanced configuration options, understand the underlying security principles, and potentially integrate/recommend the tool.

### 4. Problem Statement - Password Generator
Users consistently struggle to create and manage strong, unique passwords across their myriad online accounts. This often leads to password reuse, simple patterns, or predictable combinations, making them highly vulnerable to brute-force attacks, credential stuffing, and dictionary attacks. Existing solutions are either too complex, lack transparency in their generation methods, or are perceived as insecure, undermining user trust and exacerbating the risk of data breaches.

### 5. Solution Overview - Password Generator
The Password Generator will be a modern web application, consisting of an Angular Clarity frontend for an intuitive user experience and a dedicated, secure backend service for cryptographic password generation. Users will be able to customize password parameters such as length, character sets (uppercase, lowercase, numbers, symbols), and exclusions. The generated password will be displayed clearly and offer a one-click copy functionality. The backend will ensure true randomness using a Cryptographically Secure Pseudo-Random Number Generator (CSPRNG) and will explicitly *not* store any generated passwords or user inputs, prioritizing user privacy and security.

### 6. Functional Requirements - Password Generator
**FR-PG-001: Password Length Configuration**
*   **Description:** The system shall allow users to specify a desired password length within a defined range (e.g., 8-128 characters).
**FR-PG-002: Character Set Selection**
*   **Description:** The system shall allow users to explicitly include or exclude character types: uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and symbols (e.g., !@#$%^&*). At least one character set must be selected.
**FR-PG-003: Exclusion of Specific Characters/Patterns**
*   **Description:** The system shall allow users to specify individual characters or simple patterns (e.g., 'o0', 'i1l') to exclude from the generated password.
**FR-PG-004: Password Generation Trigger**
*   **Description:** The system shall provide a clear action (e.g., "Generate Password" button) to initiate the password generation process based on selected parameters.
**FR-PG-005: Display Generated Password**
*   **Description:** The system shall securely display the newly generated password to the user.
**FR-PG-006: Copy to Clipboard Functionality**
*   **Description:** The system shall provide a one-click action (e.g., "Copy" button) to copy the generated password to the user's clipboard.
**FR-PG-007: Frontend-Backend Communication**
*   **Description:** The frontend shall communicate with the backend API to request password generation with specified parameters and receive the generated password.
**FR-PG-008: Error Handling**
*   **Description:** The system shall provide clear, user-friendly error messages for invalid inputs or failures during the generation process.

### 7. Non-Functional Requirements - Password Generator
**NFR-PG-SEC-001: Cryptographic Security**
*   **Description:** The backend password generation algorithm shall utilize a Cryptographically Secure Pseudo-Random Number Generator (CSPRNG) to ensure true randomness and unpredictability of generated passwords.
**NFR-PG-SEC-002: No Password Storage**
*   **Description:** The system (both frontend and backend) shall explicitly NOT store any generated passwords, user-defined parameters, or any personally identifiable information.
**NFR-PG-SEC-003: Secure API Communication**
*   **Description:** All communication between the frontend and backend API shall be encrypted using HTTPS/TLS 1.2+ to prevent eavesdropping and tampering.
**NFR-PG-SEC-004: Input Validation & Sanitization**
*   **Description:** Both frontend and backend shall implement robust input validation and sanitization to prevent injection attacks and ensure valid parameters are processed.
**NFR-PG-SEC-005: Client-Side Security**
*   **Description:** The frontend shall adhere to best practices for preventing common web vulnerabilities such as XSS (Cross-Site Scripting) and CSRF (Cross-Site Request Forgery), leveraging Angular's built-in protections.
**NFR-PG-PERF-001: Generation Performance**
*   **Description:** Password generation, even for maximum length and complexity, shall complete within 500 milliseconds under normal load.
**NFR-PG-PERF-002: UI Responsiveness**
*   **Description:** The user interface shall remain highly responsive during user interactions and after password generation.
**NFR-PG-US-001: Intuitive User Interface**
*   **Description:** The UI shall be clean, easy to navigate, and clearly present all configuration options and the generated password. It will leverage the Clarity Design System for consistency.
**NFR-PG-US-002: Clear Feedback**
*   **Description:** The system shall provide immediate and clear visual feedback for user actions, such as "Password copied!" upon successful copying.
**NFR-PG-MAINT-001: Modular Architecture**
*   **Description:** The system shall maintain a modular architecture (Angular modules for frontend, clear service separation for backend) to facilitate future enhancements and bug fixes.
**NFR-PG-MAINT-002: Code Quality & Documentation**
*   **Description:** The codebase shall adhere to established coding standards and be well-documented (in-code comments, API documentation).

### 8. Epic Stories - Password Generator

#### Epic 1: Core Password Generation Logic (Backend)
**Epic Description:** This epic focuses on building the secure, robust, and highly configurable backend service responsible for generating passwords based on user-defined criteria. It emphasizes cryptographic security and flexibility.
**Business Value:** Provides the core, trustworthy engine for generating secure passwords, directly addressing the problem of weak password creation.
**Acceptance Criteria:**
*   The backend API can receive generation parameters securely.
*   The backend generates passwords using a CSPRNG.
*   The generated password adheres to all specified parameters (length, character sets, exclusions).
*   No password or sensitive user data is stored on the backend.

**User Stories:**
- **US-001:** Specify Password Length
  - **As a** user
  - **I want to** select the exact number of characters for my password
  - **So that** I can meet specific length requirements for online services
  - **Acceptance Criteria:**
    - [ ] A numerical input field for length is present on the UI.
    - [ ] The input accepts integers between 8 and 128.
    - [ ] The backend generates a password matching the specified length.
  - **Story Points:** 3
  - **Priority:** High

- **US-002:** Select Character Sets
  - **As a** user
  - **I want to** choose to include uppercase letters, lowercase letters, numbers, and symbols
  - **So that** I can customize the complexity of my password
  - **Acceptance Criteria:**
    - [ ] Checkboxes or toggles for 'Uppercase', 'Lowercase', 'Numbers', 'Symbols' are available.
    - [ ] At least one character set must be selected.
    - [ ] The generated password contains only characters from the selected sets.
  - **Story Points:** 5
  - **Priority:** High

- **US-003:** Exclude Specific Characters
  - **As a** user
  - **I want to** specify certain characters or patterns to exclude
  - **So that** I can avoid ambiguous characters (e.g., 'l', '1', 'I') or service-prohibited characters
  - **Acceptance Criteria:**
    - [ ] An input field for 'Exclude Characters' is available.
    - [ ] The backend ensures the generated password does not contain any specified excluded characters.
    - [ ] The exclusion logic handles common patterns (e.g., 'o0').
  - **Story Points:** 8
  - **Priority:** Medium

- **US-004:** Secure Password Generation
  - **As a** user (or system)
  - **I want to** have passwords generated using a cryptographically secure random number source
  - **So that** the passwords are truly unpredictable and robust against attacks
  - **Acceptance Criteria:**
    - [ ] The backend utilizes a CSPRNG (e.g., `crypto.randomBytes` in Node.js, `secrets` in Python).
    - [ ] The generation process is stateless and does not log inputs or outputs.
    - [ ] Security audits confirm the randomness and security of the generation process.
  - **Story Points:** 13
  - **Priority:** High

#### Epic 2: User Interface & Interaction (Frontend)
**Epic Description:** This epic focuses on creating an intuitive, responsive, and user-friendly interface for the Password Generator, leveraging the Angular Clarity Boilerplate. It ensures users can easily configure, generate, and retrieve their passwords.
**Business Value:** Provides an accessible and pleasant experience, encouraging users to adopt and consistently use the secure generator.
**Acceptance Criteria:**
*   All password configuration options are clearly presented and interactive.
*   The UI is responsive and works well across various screen sizes.
*   Users can generate and copy passwords with minimal effort.
*   The UI provides clear feedback for user actions.

**User Stories:**
- **US-005:** Display Configuration Options
  - **As a** user
  - **I want to** see all password generation parameters (length, character sets, exclusions) clearly on the screen
  - **So that** I can easily configure my password before generation
  - **Acceptance Criteria:**
    - [ ] All input fields and checkboxes are visible upon loading the page.
    - [ ] Configuration options are logically grouped and clearly labeled using Clarity components.
    - [ ] Default values are pre-filled (e.g., minimum length, all character sets selected).
  - **Story Points:** 3
  - **Priority:** High

- **US-006:** Trigger Password Generation
  - **As a** user
  - **I want to** click a button to generate a new password based on my selected settings
  - **So that** I can instantly get a strong password when I need one
  - **Acceptance Criteria:**
    - [ ] A prominent "Generate Password" button is present.
    - [ ] Clicking the button sends the current configuration to the backend.
    - [ ] The button provides visual feedback (e.g., loading spinner) during generation.
  - **Story Points:** 2
  - **Priority:** High

- **US-007:** Display Generated Password
  - **As a** user
  - **I want to** see the generated password clearly displayed
  - **So that** I can review it before copying or using it
  - **Acceptance Criteria:**
    - [ ] A dedicated, read-only display area shows the generated password.
    - [ ] The password text is selectable for manual copying (as a fallback).
    - [ ] The display area is easily distinguishable from input fields.
  - **Story Points:** 2
  - **Priority:** High

- **US-008:** Copy Password to Clipboard
  - **As a** user
  - **I want to** click a single button to copy the generated password to my clipboard
  - **So that** I can quickly paste it into another application without manual selection or typing
  - **Acceptance Criteria:**
    - [ ] A "Copy" button is present next to the generated password.
    - [ ] Clicking the "Copy" button successfully places the password into the system clipboard.
    - [ ] A temporary visual confirmation (e.g., "Copied!", tooltip) appears after clicking.
  - **Story Points:** 3
  - **Priority:** High

- **US-009:** Responsive User Interface
  - **As a** user
  - **I want the** password generator interface to adapt to different screen sizes (desktop, tablet, mobile)
  - **So that** I can use the tool comfortably on any device
  - **Acceptance Criteria:**
    - [ ] The layout adjusts appropriately for common breakpoints.
    - [ ] All interactive elements remain accessible and usable on mobile devices.
    - [ ] Clarity Design System's responsive grid is utilized where appropriate.
  - **Story Points:** 5
  - **Priority:** Medium

#### Epic 3: API Integration & Security
**Epic Description:** This epic covers the secure communication and interaction between the frontend and the backend password generation service, ensuring data integrity and robust error handling.
**Business Value:** Guarantees reliable and secure operation of the distributed system, fostering trust in the product.
**Acceptance Criteria:**
*   Frontend can successfully send generation requests and receive responses from the backend.
*   All API communication is encrypted and secure.
*   The system gracefully handles API errors and provides informative messages.

**User Stories:**
- **US-010:** Secure Frontend-Backend Communication
  - **As a** system
  - **I want to** communicate with the backend API exclusively over HTTPS
  - **So that** all data (parameters, generated password) is encrypted in transit and protected from interception
  - **Acceptance Criteria:**
    - [ ] Frontend API calls are configured to use HTTPS.
    - [ ] Backend API only responds to HTTPS requests.
    - [ ] Network traffic analysis confirms encrypted communication.
  - **Story Points:** 8
  - **Priority:** High

- **US-011:** Handle API Requests and Responses
  - **As a** system
  - **I want to** correctly format password generation requests to the backend and parse the responses
  - **So that** the generation process is smooth and the generated password is accurately displayed
  - **Acceptance Criteria:**
    - [ ] Frontend sends a JSON payload with `length`, `include`, `exclude` parameters.
    - [ ] Backend returns a JSON payload containing the `password` string.
    - [ ] Data models (TypeScript interfaces) are defined for requests and responses.
  - **Story Points:** 5
  - **Priority:** High

- **US-012:** API Error Handling
  - **As a** user
  - **I want to** receive clear feedback if the password generation fails due to a backend error or invalid input
  - **So that** I understand why the process failed and can attempt to resolve it
  - **Acceptance Criteria:**
    - [ ] Frontend displays a user-friendly error message if the backend returns an error status code (e.g., 400, 500).
    - [ ] Backend API returns meaningful error messages in its response payload.
    - [ ] HTTP interceptors (in CoreModule) handle global error conditions.
  - **Story Points:** 5
  - **Priority:** Medium

### 9. User Interface Requirements - Password Generator
*   **Design System:** Adhere strictly to the VMware Clarity Design System for all UI components, spacing, typography, and color palette.
*   **Layout:** Utilize the existing Clarity boilerplate's responsive layout (header, sidebar/main content if applicable) to integrate the Password Generator. A dedicated feature module will house the generator.
*   **Form Elements:** Use Clarity form controls (input fields, checkboxes, toggles) for password length, character set selection, and character exclusion.
*   **Display:** The generated password will be displayed in a prominent, read-only text field, possibly with a monospaced font for clarity.
*   **Feedback:** Implement Clarity alert components or toast notifications for success/error messages (e.g., "Password Copied!", "Generation Failed!").
*   **Accessibility:** Ensure all UI elements are accessible, including keyboard navigation and screen reader support (inherent with Clarity).

### 10. Technical Requirements - Password Generator
*   **Frontend Framework:** Angular (latest stable version), leveraging the existing boilerplate.
*   **Frontend UI Library:** VMware Clarity Design System (integrated).
*   **Frontend Language:** TypeScript.
*   **Backend Language/Framework:** (To be determined by the `io8codermaster` / `io8devopmaster` for optimal security and performance, but should support robust API creation e.g., Node.js with Express, Python with Flask/Django, Go with Gin/Echo).
*   **API Type:** RESTful API for communication between frontend and backend.
*   **Deployment:** Frontend as static assets (e.g., Nginx, cloud storage), Backend as a stateless service (e.g., Docker container, serverless function).
*   **Authentication/Authorization:** Not required for the public-facing generation service itself. Focus on API key or token-based security for internal/future integrations if needed.
*   **Data Persistence:** None. The system is stateless and does not store passwords or user data.

### 11. Success Metrics & KPIs - Password Generator
*   **User Engagement:**
    *   **KPI:** Monthly Active Users (MAU) - Number of unique users generating at least one password.
    *   **KPI:** Average passwords generated per session.
*   **Product Quality & Reliability:**
    *   **KPI:** Uptime percentage for the backend API and frontend application.
    *   **KPI:** Number of critical/high-severity security vulnerabilities identified (target: zero post-launch).
    *   **KPI:** Average response time for password generation requests.
*   **User Satisfaction:**
    *   **KPI:** Net Promoter Score (NPS) - if feedback mechanism implemented.
    *   **KPI:** Direct user feedback and testimonials.

### 12. Risk Assessment - Password Generator
*   **R-PG-001: Security Vulnerabilities in Generation Logic**
    *   **Description:** The random number generator is not truly random, leading to predictable passwords.
    *   **Mitigation:** Strict use of CSPRNG; independent security audits of the backend algorithm; peer code review.
    *   **Impact:** High | **Likelihood:** Medium
*   **R-PG-002: Data Leakage/Storage**
    *   **Description:** Accidental logging or storage of generated passwords or sensitive user inputs.
    *   **Mitigation:** Enforce "no storage" policy at architectural and code review stages; secure logging practices (no sensitive data); regular vulnerability scanning.
    *   **Impact:** Critical | **Likelihood:** Low (with mitigation)
*   **R-PG-003: API Insecurity**
    *   **Description:** Frontend-backend communication is compromised (e.g., MITM attack).
    *   **Mitigation:** Mandate HTTPS/TLS; implement API key or token validation if public-facing API; secure headers.
    *   **Impact:** High | **Likelihood:** Low (with mitigation)
*   **R-PG-004: Performance Bottlenecks**
    *   **Description:** Slow password generation or UI responsiveness under load.
    *   **Mitigation:** Optimize backend algorithm for speed; stress testing; efficient Angular change detection; lazy loading.
    *   **Impact:** Medium | **Likelihood:** Medium
*   **R-PG-005: Scope Creep**
    *   **Description:** Introduction of non-core features delaying MVP delivery.
    *   **Mitigation:** Strict adherence to MVP definition; rigorous backlog prioritization; regular stakeholder reviews.
    *   **Impact:** Medium | **Likelihood:** Medium

### 13. Timeline & Milestones - Password Generator
*   **Phase 1: Planning & Design (2025-10-10 - 2025-10-17)**
    *   Complete PRD and Project Plan (PM)
    *   Finalize Backend Architecture (Architect)
*   **Phase 2: Backend Core Development (2025-10-20 - 2025-11-07)**
    *   Implement CSPRNG-based generation logic.
    *   Develop secure RESTful API endpoints for generation.
    *   Unit testing of backend services.
    *   *Milestone:* Backend Generation Engine MVP
*   **Phase 3: Frontend UI & Integration (2025-11-10 - 2025-12-05)**
    *   Develop Angular feature module for Password Generator.
    *   Implement UI for configuration options and password display (using Clarity).
    *   Integrate frontend with backend API.
    *   Implement copy-to-clipboard functionality.
    *   *Milestone:* Frontend UI & Integration MVP
*   **Phase 4: Testing & Security Audit (2025-12-08 - 2025-12-19)**
    *   Comprehensive functional and non-functional testing (manual and automated E2E).
    *   Perform non-functional testing (performance, responsiveness).
    *   Conduct security penetration testing and vulnerability scanning.
    *   Log and prioritize identified bugs and security issues.
    *   Fix bugs and vulnerabilities.
    *   *Milestone:* End-to-End MVP (Internal Release)
*   **Phase 5: Release & Monitoring (2026-01-05 onwards)**
    *   Final deployment to production environment.
    *   Continuous monitoring of performance, security, and usage metrics.
    *   Gather user feedback for future iterations.
    *   *Milestone:* Public Beta/Initial Launch

### 14. Dependencies & Assumptions - Password Generator
*   **Dependencies:**
    *   Stable and supported versions of Angular and Clarity Design System.
    *   Availability of a robust and secure hosting environment for both frontend and backend.
    *   Access to cryptographic libraries/APIs in the chosen backend language.
    *   Clear API definition from the backend development team.
*   **Assumptions:**
    *   The existing Angular Clarity Boilerplate provides a solid, maintainable foundation.
    *   The project team has the necessary expertise in Angular, Clarity, and backend development (e.g., security-focused coding).
    *   External security audit resources will be available for review.
    *   HTTPS will be used for all production environments.



---

## PRD UPDATE - 2025-10-10 05:59:08

# Product Requirements Document (PRD)

## 1. Executive Summary
The Password Generator is a web-based application designed to provide users with a secure, customizable, and easy-to-use tool for creating strong, unique passwords. It leverages an existing Angular Clarity Boilerplate for a robust frontend experience and integrates with a dedicated, cryptographically secure backend for password generation. The primary goal is to enhance user online security by simplifying the creation of complex passwords.

## 2. Product Vision & Strategy
**Product Vision:** To empower every internet user with the ability to effortlessly generate strong, unique, and secure passwords, thereby significantly reducing the risk of online security breaches stemming from weak or reused credentials.
**Strategic Goals:**
*   Achieve best-in-class security for password generation.
*   Provide an intuitive and highly customizable user experience.
*   Ensure high availability and performance of the service.
*   Build a foundation for potential future security-focused tools.
**Success Metrics:**
*   **User Adoption:** Number of unique users generating passwords.
*   **Satisfaction:** High user ratings/feedback on ease of use and perceived security.
*   **Security Audit Results:** Successful completion of security audits with minimal or no critical vulnerabilities.
*   **Performance:** Average password generation time (e.g., <500ms).
*   **Retention:** Repeat usage of the tool.

## 3. Target Users & Personas
**Primary User Persona: Security-Conscious User "Ava"**
*   **Demographics:** 25-55 years old, uses multiple online services (banking, social media, work).
*   **Needs:** Requires strong, unique passwords for various accounts. Often struggles to create and remember complex passwords manually. Values security but prioritizes convenience.
*   **Pain Points:** Password fatigue, difficulty adhering to complex password policies (e.g., specific character types, length), fear of using insecure generation tools.
*   **Goal with Product:** Quickly generate a highly secure, customized password that meets specific service requirements, and easily copy it for use.
**Secondary User Persona: Developer/IT Professional "Ben"**
*   **Demographics:** 22-60 years old, often manages multiple systems or assists others with password hygiene.
*   **Needs:** Needs a reliable, auditable, and highly configurable password generation tool for personal and professional use. May integrate it into workflows or recommend it.
*   **Pain Points:** Lack of trust in generic online generators, desire for specific character exclusion/inclusion, need for assurance of true randomness.
*   **Goal with Product:** Utilize advanced configuration options, understand the underlying security principles, and potentially integrate/recommend the tool.

## 4. Problem Statement
Users consistently struggle to create and manage strong, unique passwords across their myriad online accounts. This often leads to password reuse, simple patterns, or predictable combinations, making them highly vulnerable to brute-force attacks, credential stuffing, and dictionary attacks. Existing solutions are either too complex, lack transparency in their generation methods, or are perceived as insecure, undermining user trust and exacerbating the risk of data breaches.

## 5. Solution Overview
The Password Generator will be a modern web application, consisting of an Angular Clarity frontend for an intuitive user experience and a dedicated, secure backend service for cryptographic password generation. Users will be able to customize password parameters such as length, character sets (uppercase, lowercase, numbers, symbols), and exclusions. The generated password will be displayed clearly and offer a one-click copy functionality. The backend will ensure true randomness using a Cryptographically Secure Pseudo-Random Number Generator (CSPRNG) and will explicitly *not* store any generated passwords or user inputs, prioritizing user privacy and security.

## 6. Functional Requirements
**FR-PG-001: Password Length Configuration**
*   **Description:** The system shall allow users to specify a desired password length within a defined range (e.g., 8-128 characters).
**FR-PG-002: Character Set Selection**
*   **Description:** The system shall allow users to explicitly include or exclude character types: uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and symbols (e.g., !@#$%^&*). At least one character set must be selected.
**FR-PG-003: Exclusion of Specific Characters/Patterns**
*   **Description:** The system shall allow users to specify individual characters or simple patterns (e.g., 'o0', 'i1l') to exclude from the generated password.
**FR-PG-004: Password Generation Trigger**
*   **Description:** The system shall provide a clear action (e.g., "Generate Password" button) to initiate the password generation process based on selected parameters.
**FR-PG-005: Display Generated Password**
*   **Description:** The system shall securely display the newly generated password to the user.
**FR-PG-006: Copy to Clipboard Functionality**
*   **Description:** The system shall provide a one-click action (e.g., "Copy" button) to copy the generated password to the user's clipboard.
**FR-PG-007: Frontend-Backend Communication**
*   **Description:** The frontend shall communicate with the backend API to request password generation with specified parameters and receive the generated password.
**FR-PG-008: Error Handling**
*   **Description:** The system shall provide clear, user-friendly error messages for invalid inputs or failures during the generation process.

## 7. Non-Functional Requirements
**NFR-PG-SEC-001: Cryptographic Security**
*   **Description:** The backend password generation algorithm shall utilize a Cryptographically Secure Pseudo-Random Number Generator (CSPRNG) to ensure true randomness and unpredictability of generated passwords.
**NFR-PG-SEC-002: No Password Storage**
*   **Description:** The system (both frontend and backend) shall explicitly NOT store any generated passwords, user-defined parameters, or any personally identifiable information.
**NFR-PG-SEC-003: Secure API Communication**
*   **Description:** All communication between the frontend and backend API shall be encrypted using HTTPS/TLS 1.2+ to prevent eavesdropping and tampering.
**NFR-PG-SEC-004: Input Validation & Sanitization**
*   **Description:** Both frontend and backend shall implement robust input validation and sanitization to prevent injection attacks and ensure valid parameters are processed.
**NFR-PG-SEC-005: Client-Side Security**
*   **Description:** The frontend shall adhere to best practices for preventing common web vulnerabilities such as XSS (Cross-Site Scripting) and CSRF (Cross-Site Request Forgery), leveraging Angular's built-in protections.
**NFR-PG-PERF-001: Generation Performance**
*   **Description:** Password generation, even for maximum length and complexity, shall complete within 500 milliseconds under normal load.
**NFR-PG-PERF-002: UI Responsiveness**
*   **Description:** The user interface shall remain highly responsive during user interactions and after password generation.
**NFR-PG-US-001: Intuitive User Interface**
*   **Description:** The UI shall be clean, easy to navigate, and clearly present all configuration options and the generated password. It will leverage the Clarity Design System for consistency.
**NFR-PG-US-002: Clear Feedback**
*   **Description:** The system shall provide immediate and clear visual feedback for user actions, such as "Password copied!" upon successful copying.
**NFR-PG-MAINT-001: Modular Architecture**
*   **Description:** The system shall maintain a modular architecture (Angular modules for frontend, clear service separation for backend) to facilitate future enhancements and bug fixes.
**NFR-PG-MAINT-002: Code Quality & Documentation**
*   **Description:** The codebase shall adhere to established coding standards and be well-documented (in-code comments, API documentation).

## 8. Epic Stories - Password Generator

#### Epic 1: Core Password Generation Logic (Backend)
**Epic Description:** This epic focuses on building the secure, robust, and highly configurable backend service responsible for generating passwords based on user-defined criteria. It emphasizes cryptographic security and flexibility.
**Business Value:** Provides the core, trustworthy engine for generating secure passwords, directly addressing the problem of weak password creation.
**Acceptance Criteria:**
*   The backend API can receive generation parameters securely.
*   The backend generates passwords using a CSPRNG.
*   The generated password adheres to all specified parameters (length, character sets, exclusions).
*   No password or sensitive user data is stored on the backend.

**User Stories:**
- **US-001:** Specify Password Length
  - **As a** user
  - **I want to** select the exact number of characters for my password
  - **So that** I can meet specific length requirements for online services
  - **Acceptance Criteria:**
    - [ ] A numerical input field for length is present on the UI.
    - [ ] The input accepts integers between 8 and 128.
    - [ ] The backend generates a password matching the specified length.
  - **Story Points:** 3
  - **Priority:** High

- **US-002:** Select Character Sets
  - **As a** user
  - **I want to** choose to include uppercase letters, lowercase letters, numbers, and symbols
  - **So that** I can customize the complexity of my password
  - **Acceptance Criteria:**
    - [ ] Checkboxes or toggles for 'Uppercase', 'Lowercase', 'Numbers', 'Symbols' are available.
    - [ ] At least one character set must be selected.
    - [ ] The generated password contains only characters from the selected sets.
  - **Story Points:** 5
  - **Priority:** High

- **US-003:** Exclude Specific Characters
  - **As a** user
  - **I want to** specify certain characters or patterns to exclude
  - **So that** I can avoid ambiguous characters (e.g., 'l', '1', 'I') or service-prohibited characters
  - **Acceptance Criteria:**
    - [ ] An input field for 'Exclude Characters' is available.
    - [ ] The backend ensures the generated password does not contain any specified excluded characters.
    - [ ] The exclusion logic handles common patterns (e.g., 'o0').
  - **Story Points:** 8
  - **Priority:** Medium

- **US-004:** Secure Password Generation
  - **As a** user (or system)
  - **I want to** have passwords generated using a cryptographically secure random number source
  - **So that** the passwords are truly unpredictable and robust against attacks
  - **Acceptance Criteria:**
    - [ ] The backend utilizes a CSPRNG (e.g., `crypto.randomBytes` in Node.js, `secrets` in Python).
    - [ ] The generation process is stateless and does not log inputs or outputs.
    - [ ] Security audits confirm the randomness and security of the generation process.
  - **Story Points:** 13
  - **Priority:** High

#### Epic 2: User Interface & Interaction (Frontend)
**Epic Description:** This epic focuses on creating an intuitive, responsive, and user-friendly interface for the Password Generator, leveraging the Angular Clarity Boilerplate. It ensures users can easily configure, generate, and retrieve their passwords.
**Business Value:** Provides an accessible and pleasant experience, encouraging users to adopt and consistently use the secure generator.
**Acceptance Criteria:**
*   All password configuration options are clearly presented and interactive.
*   The UI is responsive and works well across various screen sizes.
*   Users can generate and copy passwords with minimal effort.
*   The UI provides clear feedback for user actions.

**User Stories:**
- **US-005:** Display Configuration Options
  - **As a** user
  - **I want to** see all password generation parameters (length, character sets, exclusions) clearly on the screen
  - **So that** I can easily configure my password before generation
  - **Acceptance Criteria:**
    - [ ] All input fields and checkboxes are visible upon loading the page.
    - [ ] Configuration options are logically grouped and clearly labeled using Clarity components.
    - [ ] Default values are pre-filled (e.g., minimum length, all character sets selected).
  - **Story Points:** 3
  - **Priority:** High

- **US-006:** Trigger Password Generation
  - **As a** user
  - **I want to** click a button to generate a new password based on my selected settings
  - **So that** I can instantly get a strong password when I need one
  - **Acceptance Criteria:**
    - [ ] A prominent "Generate Password" button is present.
    - [ ] Clicking the button sends the current configuration to the backend.
    - [ ] The button provides visual feedback (e.g., loading spinner) during generation.
  - **Story Points:** 2
  - **Priority:** High

- **US-007:** Display Generated Password
  - **As a** user
  - **I want to** see the generated password clearly displayed
  - **So that** I can review it before copying or using it
  - **Acceptance Criteria:**
    - [ ] A dedicated, read-only display area shows the generated password.
    - [ ] The password text is selectable for manual copying (as a fallback).
    - [ ] The display area is easily distinguishable from input fields.
  - **Story Points:** 2
  - **Priority:** High

- **US-008:** Copy Password to Clipboard
  - **As a** user
  - **I want to** click a single button to copy the generated password to my clipboard
  - **So that** I can quickly paste it into another application without manual selection or typing
  - **Acceptance Criteria:**
    - [ ] A "Copy" button is present next to the generated password.
    - [ ] Clicking the "Copy" button successfully places the password into the system clipboard.
    - [ ] A temporary visual confirmation (e.g., "Copied!", tooltip) appears after clicking.
  - **Story Points:** 3
  - **Priority:** High

- **US-009:** Responsive User Interface
  - **As a** user
  - **I want the** password generator interface to adapt to different screen sizes (desktop, tablet, mobile)
  - **So that** I can use the tool comfortably on any device
  - **Acceptance Criteria:**
    - [ ] The layout adjusts appropriately for common breakpoints.
    - [ ] All interactive elements remain accessible and usable on mobile devices.
    - [ ] Clarity Design System's responsive grid is utilized where appropriate.
  - **Story Points:** 5
  - **Priority:** Medium

#### Epic 3: API Integration & Security
**Epic Description:** This epic covers the secure communication and interaction between the frontend and the backend password generation service, ensuring data integrity and robust error handling.
**Business Value:** Guarantees reliable and secure operation of the distributed system, fostering trust in the product.
**Acceptance Criteria:**
*   Frontend can successfully send generation requests and receive responses from the backend.
*   All API communication is encrypted and secure.
*   The system gracefully handles API errors and provides informative messages.

**User Stories:**
- **US-010:** Secure Frontend-Backend Communication
  - **As a** system
  - **I want to** communicate with the backend API exclusively over HTTPS
  - **So that** all data (parameters, generated password) is encrypted in transit and protected from interception
  - **Acceptance Criteria:**
    - [ ] Frontend API calls are configured to use HTTPS.
    - [ ] Backend API only responds to HTTPS requests.
    - [ ] Network traffic analysis confirms encrypted communication.
  - **Story Points:** 8
  - **Priority:** High

- **US-011:** Handle API Requests and Responses
  - **As a** system
  - **I want to** correctly format password generation requests to the backend and parse the responses
  - **So that** the generation process is smooth and the generated password is accurately displayed
  - **Acceptance Criteria:**
    - [ ] Frontend sends a JSON payload with `length`, `include`, `exclude` parameters.
    - [ ] Backend returns a JSON payload containing the `password` string.
    - [ ] Data models (TypeScript interfaces) are defined for requests and responses.
  - **Story Points:** 5
  - **Priority:** High

- **US-012:** API Error Handling
  - **As a** user
  - **I want to** receive clear feedback if the password generation fails due to a backend error or invalid input
  - **So that** I understand why the process failed and can attempt to resolve it
  - **Acceptance Criteria:**
    - [ ] Frontend displays a user-friendly error message if the backend returns an error status code (e.g., 400, 500).
    - [ ] Backend API returns meaningful error messages in its response payload.
    - [ ] HTTP interceptors (in CoreModule) handle global error conditions.
  - **Story Points:** 5
  - **Priority:** Medium

## 9. User Interface Requirements - Password Generator
*   **Design System:** Adhere strictly to the VMware Clarity Design System for all UI components, spacing, typography, and color palette.
*   **Layout:** Utilize the existing Clarity boilerplate's responsive layout (header, sidebar/main content if applicable) to integrate the Password Generator. A dedicated feature module will house the generator.
*   **Form Elements:** Use Clarity form controls (input fields, checkboxes, toggles) for password length, character set selection, and character exclusion.
*   **Display:** The generated password will be displayed in a prominent, read-only text field, possibly with a monospaced font for clarity.
*   **Feedback:** Implement Clarity alert components or toast notifications for success/error messages (e.g., "Password Copied!", "Generation Failed!").
*   **Accessibility:** Ensure all UI elements are accessible, including keyboard navigation and screen reader support (inherent with Clarity).

## 10. Technical Requirements - Password Generator
*   **Frontend Framework:** Angular (latest stable version), leveraging the existing boilerplate.
*   **Frontend UI Library:** VMware Clarity Design System (integrated).
*   **Frontend Language:** TypeScript.
*   **Backend Language/Framework:** (To be determined by the `io8codermaster` / `io8devopmaster` for optimal security and performance, but should support robust API creation e.g., Node.js with Express, Python with Flask/Django, Go with Gin/Echo).
*   **API Type:** RESTful API for communication between frontend and backend.
*   **Deployment:** Frontend as static assets (e.g., Nginx, cloud storage), Backend as a stateless service (e.g., Docker container, serverless function).
*   **Authentication/Authorization:** Not required for the public-facing generation service itself. Focus on API key or token-based security for internal/future integrations if needed.
*   **Data Persistence:** None. The system is stateless and does not store passwords or user data.

## 11. Success Metrics & KPIs - Password Generator
*   **User Engagement:**
    *   **KPI:** Monthly Active Users (MAU) - Number of unique users generating at least one password.
    *   **KPI:** Average passwords generated per session.
*   **Product Quality & Reliability:**
    *   **KPI:** Uptime percentage for the backend API and frontend application.
    *   **KPI:** Number of critical/high-severity security vulnerabilities identified (target: zero post-launch).
    *   **KPI:** Average response time for password generation requests.
*   **User Satisfaction:**
    *   **KPI:** Net Promoter Score (NPS) - if feedback mechanism implemented.
    *   **KPI:** Direct user feedback and testimonials.

## 12. Risk Assessment - Password Generator
*   **R-PG-001: Security Vulnerabilities in Generation Logic**
    *   **Description:** The random number generator is not truly random, leading to predictable passwords.
    *   **Mitigation:** Strict use of CSPRNG; independent security audits of the backend algorithm; peer code review.
    *   **Impact:** High | **Likelihood:** Medium
*   **R-PG-002: Data Leakage/Storage**
    *   **Description:** Accidental logging or storage of generated passwords or sensitive user inputs.
    *   **Mitigation:** Enforce "no storage" policy at architectural and code review stages; secure logging practices (no sensitive data); regular vulnerability scanning.
    *   **Impact:** Critical | **Likelihood:** Low (with mitigation)
*   **R-PG-003: API Insecurity**
    *   **Description:** Frontend-backend communication is compromised (e.g., MITM attack).
    *   **Mitigation:** Mandate HTTPS/TLS; implement API key or token validation if public-facing API; secure headers.
    *   **Impact:** High | **Likelihood:** Low (with mitigation)
*   **R-PG-004: Performance Bottlenecks**
    *   **Description:** Slow password generation or UI responsiveness under load.
    *   **Mitigation:** Optimize backend algorithm for speed; stress testing; efficient Angular change detection; lazy loading.
    *   **Impact:** Medium | **Likelihood:** Medium
*   **R-PG-005: Scope Creep**
    *   **Description:** Introduction of non-core features delaying MVP delivery.
    *   **Mitigation:** Strict adherence to MVP definition; rigorous backlog prioritization; regular stakeholder reviews.
    *   **Impact:** Medium | **Likelihood:** Medium

## 13. Timeline & Milestones - Password Generator
*   **Phase 1: Planning & Design (2025-10-10 - 2025-10-17)**
    *   Complete PRD and Project Plan (PM)
    *   Finalize Backend Architecture (Architect)
*   **Phase 2: Backend Core Development (2025-10-20 - 2025-11-07)**
    *   Implement CSPRNG-based generation logic.
    *   Develop secure RESTful API endpoints for generation.
    *   Unit testing of backend services.
    *   *Milestone:* Backend Generation Engine MVP
*   **Phase 3: Frontend UI & Integration (2025-11-10 - 2025-12-05)**
    *   Develop Angular feature module for Password Generator.
    *   Implement UI for configuration options and password display (using Clarity).
    *   Integrate frontend with backend API.
    *   Implement copy-to-clipboard functionality.
    *   *Milestone:* Frontend UI & Integration MVP
*   **Phase 4: Testing & Security Audit (2025-12-08 - 2025-12-19)**
    *   Comprehensive functional and non-functional testing (manual and automated E2E).
    *   Perform non-functional testing (performance, responsiveness).
    *   Conduct security penetration testing and vulnerability scanning.
    *   Log and prioritize identified bugs and security issues.
    *   Fix bugs and vulnerabilities.
    *   *Milestone:* End-to-End MVP (Internal Release)
*   **Phase 5: Release & Monitoring (2026-01-05 onwards)**
    *   Final deployment to production environment.
    *   Continuous monitoring of performance, security, and usage metrics.
    *   Gather user feedback for future iterations.
    *   *Milestone:* Public Beta/Initial Launch

## 14. Dependencies & Assumptions - Password Generator
*   **Dependencies:**
    *   Stable and supported versions of Angular and Clarity Design System.
    *   Availability of a robust and secure hosting environment for both frontend and backend.
    *   Access to cryptographic libraries/APIs in the chosen backend language.
    *   Clear API definition from the backend development team.
*   **Assumptions:**
    *   The existing Angular Clarity Boilerplate provides a solid, maintainable foundation.
    *   The project team has the necessary expertise in Angular, Clarity, and backend development (e.g., security-focused coding).
    *   External security audit resources will be available for review.
    *   HTTPS will be used for all production environments.

