Interactive UI Enhancements - Smooth animations, progress indicators, and structured logging @dgtalbug (#18)

[dgtalbug]

Description

This PR implements feature #18 from the specification.

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• 🚀 New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📚 Documentation update
• 🔧 Refactoring (no functional changes)
• ⚡ Performance improvement
• 🧪 Test update
• 📦 Dependency update

Related Issue

Relates to feature #18 - 018-interactive-ui-enhancements

Changes Made

Completed Tasks

• • T001 Add charmbracelet/log v0.4.0 to go.mod
• • T002 Add natefinch/lumberjack v2.2.1 to go.mod
• • T003 Run go mod tidy and verify all dependencies resolve
• • T004 Create .arc/config/ directory structure
• • T005 Create .arc/logs/ directory structure for log files
• • T006 [P] Create internal/terminal/detect.go with Capabilities struct
• • T007 [P] Implement ColorProfile detection (TrueColor/256/16/NoColor) in internal/terminal/detect.go
• • T008 [P] Implement TTY detection using term.IsTerminal in internal/terminal/detect.go
• • T009 [P] Implement terminal size detection (width/height) in internal/terminal/detect.go
• • T010 [P] Add environment variable handling (NO_COLOR, CLICOLOR_FORCE, TERM) in internal/terminal/detect.go
• • T011 [P] Create pkg/log/logger.go with Logger interface
• • T012 [P] Create pkg/log/writer.go with file writer using lumberjack rotation
• • T013 [P] Create pkg/log/redactor.go with secret redaction logic
• • T014 Implement New() function in pkg/log/logger.go integrating Charm log
• • T015 Add log level configuration (DEBUG/INFO/WARN/ERROR/FATAL) in pkg/log/logger.go
• • T016 Implement dual output (console + file) in pkg/log/writer.go
• • T017 Add context-based logging with With() method in pkg/log/logger.go
• • T018 [P] Create pkg/ui/components/animator.go with Animator interface
• • T019 [P] Implement spring animation using Harmonica in pkg/ui/components/animator.go
• • T020 [P] Add AnimationConfig struct with damping/stiffness parameters in pkg/ui/components/animator.go

Files Modified

• 67 files changed
• 12351 insertions(+)
• 130 deletions(-)
• 23 test files added/modified
• • lines of test code

Testing

• All existing tests pass
• Added new tests for changes
• Manual testing completed
• Tested on multiple platforms (if applicable)

Coverage Summary

Package	Coverage	Status
internal/branding	52.6%	⚠️
internal/state	75.0%	✅
internal/terminal	88.1%	✅
internal/version	100.0%	✅
pkg/cli	12.3%	⚠️
pkg/log	98.0%	✅
pkg/state	61.5%	✅
pkg/ui/components	80.9%	✅
pkg/ui/layout	25.9%	⚠️
pkg/ui/markdown	75.0%	✅
pkg/ui/styles	100.0%	✅
pkg/ui/themes	100.0%	✅

Additional Notes

Design Decisions

---

Branch: 018-interactive-ui-enhancements
Spec Directory: specs/018-interactive-ui-enhancements
Generated: 2025-12-21 12:13:24