# Requirements Specification: {{FEATURE_NAME}}

**Project**: {{PROJECT_NAME}}
**Version**: 1.0
**Status**: Draft
**Date**: {{DATE}}
**Author**: {{AUTHOR}}

---

## Document Control

| Version | Date     | Author     | Changes       |
| ------- | -------- | ---------- | ------------- |
| 1.0     | {{DATE}} | {{AUTHOR}} | Initial draft |

---

## Overview

### Purpose

[Describe the purpose of this feature/component]

### Scope

**In Scope**:

- [Item 1]
- [Item 2]

**Out of Scope**:

- [Item 1]
- [Item 2]

### Business Context

[Reference to steering/product.md or business goals]

---

## Stakeholders

| Role             | Name    | Responsibilities      |
| ---------------- | ------- | --------------------- |
| Product Owner    | [Name]  | Requirements approval |
| Tech Lead        | [Name]  | Technical feasibility |
| QA Lead          | [Name]  | Test planning         |
| Development Team | [Names] | Implementation        |

---

## Functional Requirements

### REQ-{{COMPONENT}}-001: [Requirement Title]

[EARS Pattern Statement - choose one of the 5 patterns:]

**Pattern: Ubiquitous**

```
The [system] SHALL [requirement].
```

**Pattern: Event-Driven**

```
WHEN [event or condition],
THEN the [system] SHALL [response]
AND the system SHALL [additional response].
```

**Pattern: State-Driven**

```
WHILE [state or condition],
the [system] SHALL [response].
```

**Pattern: Unwanted Behavior**

```
IF [unwanted condition or error],
THEN the [system] SHALL [response]
AND the system SHALL [error handling].
```

**Pattern: Optional Feature**

```
WHERE [feature or configuration is enabled],
the [system] SHALL [response].
```

**Acceptance Criteria**:

- [Testable criterion 1]
- [Testable criterion 2]
- [Testable criterion 3]

**Priority**: [P0/P1/P2/P3]

- P0 = Critical (launch blocker)
- P1 = High (required for launch)
- P2 = Medium (nice to have)
- P3 = Low (future consideration)

**Status**: [Draft/Approved/Implemented/Tested/Deployed]

**Traceability**:

- Design: [Reference to design.md section]
- Code: [file-path:line-number]
- Tests: [test-file:line-number]

**Dependencies**:

- [REQ-XXX-NNN] - [Description]

**Assumptions**:

- [Assumption 1]
- [Assumption 2]

**Constraints**:

- [Constraint 1]
- [Constraint 2]

---

### REQ-{{COMPONENT}}-002: [Next Requirement]

[Continue with additional requirements...]

---

## Non-Functional Requirements

### REQ-PERF-001: Performance

The {{COMPONENT}} SHALL respond within [X]ms for [Y]% of requests.

**Acceptance Criteria**:

- 95th percentile < [X]ms
- 99th percentile < [Y]ms
- Tested with [Z] concurrent users
- Response time measured end-to-end

**Priority**: P0
**Status**: Draft

---

### REQ-SEC-001: Security

The {{COMPONENT}} SHALL prevent [security threat].

**Acceptance Criteria**:

- OWASP Top 10 vulnerabilities mitigated
- Input validation on all user inputs
- Output encoding for XSS prevention
- SQL injection prevention via parameterized queries
- Authentication required for all protected endpoints

**Priority**: P0
**Status**: Draft

---

### REQ-SCALE-001: Scalability

The {{COMPONENT}} SHALL support [X] concurrent users.

**Acceptance Criteria**:

- Load tested with [X] concurrent users
- No degradation in performance
- Horizontal scaling supported
- Database connection pooling configured

**Priority**: P1
**Status**: Draft

---

### REQ-AVAIL-001: Availability

The {{COMPONENT}} SHALL maintain [X]% uptime.

**Acceptance Criteria**:

- 99.9% uptime SLA
- Health check endpoint available
- Graceful degradation on dependency failure
- Monitoring and alerting configured

**Priority**: P1
**Status**: Draft

---

### REQ-MAINT-001: Maintainability

The {{COMPONENT}} SHALL follow [coding standards].

**Acceptance Criteria**:

- Code review passed
- SOLID principles followed
- Test coverage ≥ 80%
- Documentation complete (README, API docs)

**Priority**: P1
**Status**: Draft

---

## User Stories

### US-001: [User Story Title]

**As a** [user type],
**I want** [functionality],
**So that** [benefit].

**Acceptance Criteria**:

- [Criterion 1]
- [Criterion 2]

**Maps to Requirements**:

- REQ-{{COMPONENT}}-001
- REQ-{{COMPONENT}}-002

---

## Use Cases

### UC-001: [Use Case Title]

**Actor**: [Primary actor]
**Goal**: [What the actor wants to achieve]

**Preconditions**:

- [Precondition 1]
- [Precondition 2]

**Main Flow**:

1. [Step 1]
2. [Step 2]
3. [Step 3]

**Postconditions**:

- [Postcondition 1]
- [Postcondition 2]

**Alternative Flows**:

- **Alt 1**: [Description]
  1. [Step 1]
  2. [Step 2]

**Exception Flows**:

- **Exc 1**: [Error condition]
  1. [Step 1]
  2. [Step 2]

**Maps to Requirements**:

- REQ-{{COMPONENT}}-001
- REQ-{{COMPONENT}}-003

---

## Requirements Coverage Matrix

| Requirement ID        | Priority | Design                | Code           | Tests                 | Status |
| --------------------- | -------- | --------------------- | -------------- | --------------------- | ------ |
| REQ-{{COMPONENT}}-001 | P0       | design.md#section     | src/file.ts:45 | tests/file.test.ts:23 | Draft  |
| REQ-{{COMPONENT}}-002 | P0       | design.md#section     | src/file.ts:89 | tests/file.test.ts:67 | Draft  |
| REQ-PERF-001          | P0       | design.md#performance | -              | -                     | Draft  |
| REQ-SEC-001           | P0       | design.md#security    | -              | -                     | Draft  |

**Coverage Summary**:

- Total Requirements: [N]
- Requirements with Design: [N] ([%]%)
- Requirements with Code: [N] ([%]%)
- Requirements with Tests: [N] ([%]%)
- **Coverage Goal**: 100%

---

## Glossary

| Term     | Definition   |
| -------- | ------------ |
| [Term 1] | [Definition] |
| [Term 2] | [Definition] |

---

## References

- [Steering Context](../../steering/product.md)
- [EARS Format Guide](../../steering/rules/ears-format.md)
- [Workflow Guide](../../steering/rules/workflow.md)
- [Related Documentation]

---

## Appendix A: EARS Pattern Quick Reference

| Pattern      | Keyword              | Use Case                    |
| ------------ | -------------------- | --------------------------- |
| Ubiquitous   | `The [system] SHALL` | Always-active functionality |
| Event-Driven | `WHEN ... THEN`      | Triggered by events         |
| State-Driven | `WHILE ... SHALL`    | Active during state         |
| Unwanted     | `IF ... THEN`        | Error handling              |
| Optional     | `WHERE ... SHALL`    | Feature flags               |

---

## Appendix B: Constitutional Compliance

This requirements document complies with:

- ✅ **Article IV**: All requirements use EARS format
- ✅ **Article V**: 100% traceability (requirements → design → code → tests)
- ✅ **Article VI**: Business context from steering/product.md

**Validation**:

```bash
@constitution-enforcer validate requirements.md
```

---

## Appendix C: Change Log

### Version 1.1 (Planned)

- [Planned change 1]
- [Planned change 2]

---

**Powered by ITDA** - Specification Driven Development