Remove interactive input device requirements from specifications

[Copilot]

This PR removes all requirements related to interactive input devices (buttons, joysticks, rotary encoders, touchscreens) from the firmware specifications, aligning with the architectural decision to focus on display-only output and protocol-based control.

Changes Made

Requirements Specification (specs/requirements.md)

• Updated Section 11 title from "USER INTERFACE REQUIREMENTS" to "DISPLAY REQUIREMENTS"
• Removed Section 11.2 "Input Device Requirements" entirely:
  • REQ-UI-004: Button input device support
  • REQ-UI-005: Joystick input device support
  • REQ-UI-006: Rotary encoder with button input device support
  • REQ-UI-007: Touch screen input device support
• Removed Section 11.3 "Interactive Operations Requirements" entirely:
  • REQ-UI-008: Manual axis movement via input devices
  • REQ-UI-009: Starting/stopping tracking via input devices
  • REQ-UI-010: Finding home position via input devices
  • REQ-UI-011: Going to home position via input devices
  • REQ-UI-012: Entering target coordinates via input devices

Development Roadmap (ROADMAP.md)

• Updated EPIC 7 title from "User Interface & Web Systems" to "Display & Web Systems"
• Updated EPIC 7.1 from "Display & Input Device Support" to "Display Support"
• Removed all interactive input device requirements from acceptance criteria
• Updated requirements list to only include REQ-UI-001 through REQ-UI-003

Design Documentation (specs/design.md)

• Updated cross-references to reflect only the preserved display requirements (REQ-UI-001 to REQ-UI-003)

Requirements Preserved

All display-only requirements remain intact:

• REQ-UI-001: Information-only displays for mount status visualization
• REQ-UI-002: LCD screen support (small, large, color, monochrome)
• REQ-UI-003: Mount status information display when display present

Architecture Impact

The firmware architecture now focuses exclusively on:

• Display-only output for status visualization
• LX200 protocol for all control operations
• Web-based configuration interface for device setup
• No local interactive input devices for simplified hardware requirements

This change simplifies the user interface architecture while maintaining full functionality through established control protocols and modern web-based configuration.

Fixes #28.
Fixes #29.

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[Copilot]

Pull Request Overview

This PR removes all interactive input device requirements from the firmware specifications, simplifying the user interface architecture to focus solely on display-only output and protocol-based control. This aligns with an architectural decision to eliminate local interactive controls in favor of LX200 protocol commands and web-based configuration interfaces.

Key Changes:

• Removed 9 requirements related to interactive input devices (buttons, joysticks, encoders, touchscreens)
• Updated section titles to reflect display-only focus
• Preserved all display requirements for status visualization

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
specs/requirements.md	Removed input device and interactive operations requirements sections, updated section title to "Display Requirements"
specs/design.md	Updated requirement cross-references to reflect only preserved display requirements
ROADMAP.md	Updated EPIC 7 title and scope, removed interactive input device acceptance criteria