Phase 5: TUI client (Bubbletea)

- cmd/tui/main.go: entry point with --server, --token, --version flags
- cmd/tui/config.go: config from ~/.config/dumpster/config.yaml or env vars
- cmd/tui/auth.go: login flow, session cookie management
- cmd/tui/api.go: HTTP client for servers, channels, messages, voice
- cmd/tui/model.go: root bubbletea model with state management
- cmd/tui/theme.go: Gruvbox dark lipgloss styles
- cmd/tui/servers.go: server bar with [D] style initials
- cmd/tui/channels.go: channel list with #text and 🔊 voice
- cmd/tui/chat.go: IRC-style message viewport with colored usernames
- cmd/tui/input.go: message input with > _ prompt
- cmd/tui/members.go: member list with ●/◐/○ status
- cmd/tui/ws.go: WebSocket client for real-time events
- cmd/tui/voice.go: voice state tracking and mute toggle
- cmd/tui/keys.go: vim-style keybindings (j/k, g/G, Tab, /, etc)
- cmd/tui/views.go: multi-pane layout rendering
- Makefile: added build-tui and run-tui targets
- go.mod/go.sum: added charmbracelet dependencies

cmd/tui/chat.go

@@ -0,0 +1,116 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/charmbracelet/lipgloss"
+)
+
+// RenderMessages renders the chat message list for the viewport.
+func RenderMessages(messages []Message, width int, currentUser string) string {
+	if len(messages) == 0 {
+		return HelpStyle.Render("  No messages yet. Press 'i' to type a message.")
+	}
+
+	var lines []string
+
+	for _, msg := range messages {
+		ts := formatTimestamp(msg.CreatedAt)
+
+		// Determine display name
+		displayName := msg.AuthorName
+		if msg.DisplayName != nil && *msg.DisplayName != "" {
+			displayName = *msg.DisplayName
+		}
+
+		// Color the username
+		userColor := UsernameColor(msg.AuthorName)
+		styledUser := UsernameStyle.Foreground(userColor).Render(displayName)
+
+		// Content
+		content := msg.Content
+
+		// Show edited tag
+		editedTag := ""
+		if msg.EditedAt != nil {
+			editedTag = EditedTag.Render(" (edited)")
+		}
+
+		// IRC-style: [HH:MM] <user> message
+		tsRendered := TimestampStyle.Render("[" + ts + "]")
+		prefix := fmt.Sprintf("%s <%s> ", tsRendered, styledUser)
+
+		// Word wrap the content
+		contentWidth := width - lipgloss.Width(prefix) - 2
+		if contentWidth < 10 {
+			contentWidth = 40
+		}
+		wrappedContent := wordWrap(content, contentWidth)
+
+		// First line has the prefix, continuation lines are indented
+		contentLines := strings.Split(wrappedContent, "\n")
+		for i, cl := range contentLines {
+			if i == 0 {
+				lines = append(lines, prefix+cl+editedTag)
+			} else {
+				indent := strings.Repeat(" ", lipgloss.Width(prefix))
+				lines = append(lines, indent+cl)
+			}
+		}
+	}
+
+	return strings.Join(lines, "\n")
+}
+
+// formatTimestamp parses the created_at string and returns HH:MM.
+func formatTimestamp(ts string) string {
+	// Try various formats the server might return
+	formats := []string{
+		time.RFC3339,
+		"2006-01-02T15:04:05.999999Z",
+		"2006-01-02T15:04:05.999999-07:00",
+		"2006-01-02 15:04:05",
+		"2006-01-02T15:04:05Z",
+	}
+
+	for _, f := range formats {
+		if t, err := time.Parse(f, ts); err == nil {
+			return t.Format("15:04")
+		}
+	}
+
+	// Fallback: try to extract HH:MM from the string
+	if len(ts) >= 16 {
+		return ts[11:16]
+	}
+	return "??:??"
+}
+
+// wordWrap wraps text to the given width.
+func wordWrap(text string, width int) string {
+	if width <= 0 {
+		return text
+	}
+
+	words := strings.Fields(text)
+	if len(words) == 0 {
+		return ""
+	}
+
+	var lines []string
+	currentLine := words[0]
+
+	for _, word := range words[1:] {
+		if len(currentLine)+1+len(word) > width {
+			lines = append(lines, currentLine)
+			currentLine = word
+		} else {
+			currentLine += " " + word
+		}
+	}
+	lines = append(lines, currentLine)
+
+	return strings.Join(lines, "\n")
+}