add large ASCII fonts and font cycling to live modev0.3.0main

- Add 4 new ASCII art fonts (mono12, rebel, ansi, ansiShadow) adapted from pomo project
- Implement random font selection on startup when no font is specified
- Add 'f' hotkey in live mode to cycle through fonts
- Update LICENSE with MIT attribution for pomo fonts
- Update README with comprehensive font documentation
- Bump version to v0.3.0

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/internal/ascii/render.go b/internal/ascii/render.go
new file mode 100644
index 0000000..eb41dd1
--- /dev/null
+++ b/internal/ascii/render.go
@@ -0,0 +1,47 @@
+// Package ascii provides ASCII art rendering for timer display.
+// This code is adapted from https://github.com/Bahaaio/pomo
+// Copyright (c) 2025 Bahaa El Deen Mohamed
+// Licensed under the MIT License
+package ascii
+
+import (
+	"github.com/charmbracelet/lipgloss"
+)
+
+// RenderNumber renders a string of digits as ASCII art using the specified font.
+// The number parameter should contain only digits (0-9) and colons (:).
+// Returns the ASCII art representation as a single string with properly aligned characters.
+func RenderNumber(number string, font Font) string {
+	digits := make([]string, 0, len(number))
+
+	for _, digit := range number {
+		digits = append(digits, renderDigit(digit, font))
+	}
+
+	asciiDigits := lipgloss.JoinHorizontal(lipgloss.Top, digits...)
+	return asciiDigits
+}
+
+// GetFont returns the font with the given name.
+// If the font doesn't exist, it returns the default font.
+func GetFont(fontName string) Font {
+	if font, exists := fonts[fontName]; exists {
+		return font
+	}
+
+	return fonts[DefaultFont]
+}
+
+// renderDigit converts a single digit character to its ASCII art representation.
+// Supports digits 0-9 and colon (:). Returns empty string for unsupported characters.
+func renderDigit(digit rune, font Font) string {
+	if digit == ':' {
+		return font[len(font)-1]
+	}
+
+	if digit < '0' || digit > '9' {
+		return ""
+	}
+
+	return font[digit-'0']
+}