chore: clean up

[theantichris]

No description provided.

[Copilot]

Pull request overview

This PR performs a comprehensive cleanup of the codebase, focusing on renaming packages for better clarity and removing unused files. The changes rename the theme package to style to better reflect its styling/rendering purpose, and rename the ui package to tui (Terminal UI) to be more specific about its terminal-based interface implementation. Additionally, the Tool interface is consolidated from a separate file into registry.go, and several unused documentation and test files are removed.

Changes:

• Renamed theme package to style across 7 files and updated all import references
• Renamed ui package to tui across 22 files and updated all import references
• Consolidated Tool interface from internal/tool/tool.go into internal/tool/registry.go
• Removed unused test scripts and documentation tape/gif files
• Simplified CLAUDE.md documentation to reflect the new package structure
• Inlined constants in cmd/root.go for better code organization

Reviewed changes

Copilot reviewed 41 out of 45 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
style/style.go	Package declaration updated from theme to style
style/render.go	Package declaration updated from theme to style
style/json.go	Package declaration updated from theme to style
style/glyph.go	Package declaration updated from theme to style
style/glamour.go	Package declaration updated from theme to style
style/fang.go	Package declaration updated from theme to style
style/color.go	Package declaration updated from theme to style
main.go	Import updated to use style package instead of theme
internal/tui/*.go	All 22 files updated with package name from ui to tui
internal/tui/stream.go	Import updated to use style package
internal/tui/chat_stream.go	Import updated to use style package
internal/tui/chat_stream_test.go	Import updated to use style package
internal/tui/chat_command.go	Import updated to use style package
internal/tui/chat_command_test.go	Import updated to use style package
internal/tui/chat.go	Import updated to use style package
internal/tool/tool.go	File deleted - interface moved to registry.go
internal/tool/registry.go	Tool interface definition added from deleted tool.go
cmd/root.go	Imports updated to use style and tui, constants inlined
cmd/chat.go	Import updated to use tui package
test_features.sh	Deleted unused test script
documentation/*.tape	Deleted unused VHS tape files for GIF generation
documentation/*.gif	Deleted generated GIF files
AGENTS.md	Deleted duplicate documentation file
CLAUDE.md	Simplified and updated to reflect new package names and structure

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