bump up version to 0.11.2

Patch release: code quality improvements based on 100 Go Mistakes analysis.
- Fixed race condition in global RNG
- Optimized render performance by lazy-calling .View()
- Improved map pre-allocation
- Handled or explicitly silenced unchecked errors
- Removed unused functions and fields
- Updated deprecated library methods

7 files changed, 44 insertions, 117 deletions

diff --git a/TODO.md b/TODO.md
deleted file mode 100644
index 9a61cff..0000000
--- a/TODO.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# To-do's
-
-* As of now nothing here.
diff --git a/internal/task/task.go b/internal/task/task.go
index d8e2e72..51d1451 100644
--- a/internal/task/task.go
+++ b/internal/task/task.go
@@ -61,7 +61,7 @@ var dbg debugConfig
 func SetDebugLog(path string) error {
 	// Close existing debug file if open before re-configuring.
 	if dbg.file != nil {
-		dbg.file.Close()
+		_ = dbg.file.Close()
 		dbg.file = nil
 		dbg.writer = nil
 	}
diff --git a/internal/ui/handlers.go b/internal/ui/handlers.go
index d447c31..11a78cd 100644
--- a/internal/ui/handlers.go
+++ b/internal/ui/handlers.go
@@ -58,7 +58,7 @@ func (m *Model) handleAnnotationMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 				return err
 			}
 		}
-		m.reload()
+		_ = m.reload()
 		return nil
 	}
 	
@@ -84,7 +84,7 @@ func (m *Model) handleDescriptionMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		if err := task.SetDescription(m.descID, value); err != nil {
 			return err
 		}
-		m.reload()
+		_ = m.reload()
 		return nil
 	}
 	
@@ -114,9 +114,7 @@ func (m *Model) handleTagsMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 					removes = append(removes, tagName)
 				}
 			} else {
-				if strings.HasPrefix(w, "+") {
-					w = w[1:]
-				}
+				w = strings.TrimPrefix(w, "+")
 				if w != "" {
 					if err := validateTagName(w); err != nil {
 						return fmt.Errorf("add tag '%s': %w", w, err)
@@ -135,7 +133,7 @@ func (m *Model) handleTagsMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 				return err
 			}
 		}
-		m.reload()
+		_ = m.reload()
 		return nil
 	}
 	
@@ -204,7 +202,7 @@ func (m *Model) handleRecurrenceMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		if err := task.SetRecurrence(m.recurID, value); err != nil {
 			return err
 		}
-		m.reload()
+		_ = m.reload()
 		return nil
 	}
 	
@@ -298,7 +296,7 @@ func (m *Model) handlePriorityMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 func (m *Model) handleFilterMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	onEnter := func(value string) error {
 		m.filters = strings.Fields(value)
-		m.reload()
+		_ = m.reload()
 		return nil
 	}
 	
@@ -313,7 +311,7 @@ func (m *Model) handleFilterMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 func (m *Model) handleAddTaskMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	switch msg.Type {
 	case tea.KeyEnter:
-		oldIDs := make(map[int]struct{})
+		oldIDs := make(map[int]struct{}, len(m.tasks))
 		for _, tsk := range m.tasks {
 			oldIDs[tsk.ID] = struct{}{}
 		}
diff --git a/internal/ui/helpers.go b/internal/ui/helpers.go
index 9846811..4cdf3cc 100644
--- a/internal/ui/helpers.go
+++ b/internal/ui/helpers.go
@@ -22,16 +22,6 @@ func parseTaskDate(dateStr string) (time.Time, error) {
 	return time.Parse(taskDateFormat, dateStr)
 }
 
-// formatTaskDate formats a time as a Taskwarrior date string
-func formatTaskDate(t time.Time) string {
-	return t.UTC().Format(taskDateFormat)
-}
-
-// daysSince returns the number of days since the given time
-func daysSince(t time.Time) int {
-	return int(time.Since(t).Hours() / 24)
-}
-
 // daysUntil returns the number of days until the given time
 func daysUntil(t time.Time) int {
 	now := time.Now()
@@ -101,16 +91,6 @@ func validateTagName(tag string) error {
 	return nil
 }
 
-// validateTags validates a list of tags
-func validateTags(tags []string) error {
-	for _, tag := range tags {
-		if err := validateTagName(tag); err != nil {
-			return fmt.Errorf("invalid tag '%s': %w", tag, err)
-		}
-	}
-	return nil
-}
-
 // validateDueDate validates a due date string
 func validateDueDate(due string) error {
 	if due == "" {
diff --git a/internal/ui/keyhandlers.go b/internal/ui/keyhandlers.go
index 3db0725..0a2bc62 100644
--- a/internal/ui/keyhandlers.go
+++ b/internal/ui/keyhandlers.go
@@ -28,16 +28,16 @@ func (m *Model) handleNormalMode(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		case "N":
 			return m.handlePrevHelpSearchMatch()
 		case "up", "k":
-			m.helpViewport.LineUp(1)
+			m.helpViewport.ScrollUp(1)
 			return m, nil
 		case "down", "j":
-			m.helpViewport.LineDown(1)
+			m.helpViewport.ScrollDown(1)
 			return m, nil
 		case "pgup", "b":
-			m.helpViewport.ViewUp()
+			m.helpViewport.PageUp()
 			return m, nil
 		case "pgdown", " ":
-			m.helpViewport.ViewDown()
+			m.helpViewport.PageDown()
 			return m, nil
 		case "g", "home":
 			m.helpViewport.GotoTop()
@@ -337,7 +337,7 @@ func (m *Model) handleRandomDueDate() (tea.Model, tea.Cmd) {
 		return m, nil
 	}
 	
-	days := rng.Intn(31) + 7
+	days := rand.Intn(31) + 7
 	due := time.Now().AddDate(0, 0, days).Format("2006-01-02")
 	
 	if err := task.SetDueDate(id, due); err != nil {
diff --git a/internal/ui/table.go b/internal/ui/table.go
index bfdc803..05c0548 100644
--- a/internal/ui/table.go
+++ b/internal/ui/table.go
@@ -2,7 +2,6 @@ package ui
 
 import (
 	"fmt"
-	"math/rand"
 	"os"
 	"os/exec"
 	"regexp"
@@ -27,7 +26,6 @@ var priorityOptions = []string{"H", "M", "L", ""}
 var (
 	urlRegex         = regexp.MustCompile(`https?://\S+`)
 	searchRegexCache = make(map[string]*regexp.Regexp)
-	rng              = rand.New(rand.NewSource(time.Now().UnixNano()))
 )
 
 type cellMatch struct {
@@ -78,7 +76,6 @@ type detailViewState struct {
 	// detailDescEditing lives here (not in editState) because it drives an
 	// external-editor launch from the detail overlay, not inline text input.
 	detailDescEditing  bool   // whether the description editor is open
-	detailDescTempFile string // temp file path for description editing
 }
 
 // editState holds inline field-editing state for the task table.
@@ -208,9 +205,9 @@ func editDescriptionCmd(description string) tea.Cmd {
 		
 		// Write current description to temp file
 		_, err = tmpFile.WriteString(description)
-		tmpFile.Close()
+		_ = tmpFile.Close()
 		if err != nil {
-			os.Remove(tmpPath)
+			_ = os.Remove(tmpPath)
 			return descEditDoneMsg{err: err, tempFile: ""}
 		}
 		
@@ -524,7 +521,7 @@ func (m *Model) handleEditDone(msg editDoneMsg) (tea.Model, tea.Cmd) {
 // handleDescEditDone handles the completion of description editing
 func (m *Model) handleDescEditDone(msg descEditDoneMsg) (tea.Model, tea.Cmd) {
 	m.detailDescEditing = false
-	defer os.Remove(msg.tempFile) // Clean up temp file
+	_ = os.Remove(msg.tempFile) // Clean up temp file
 	
 	if msg.err != nil {
 		m.statusMsg = fmt.Sprintf("Edit error: %v", msg.err)
@@ -642,26 +639,32 @@ func (m Model) View() string {
 // (annotate, due, priority, desc, tags, recur, project, filter, add, search)
 // should be displayed below the table. At most one is active at a time.
 func (m Model) appendInlineInputOverlay(view string) string {
-	type overlay struct {
-		active bool
-		widget string
-	}
-	overlays := []overlay{
-		{m.annotating, m.annotateInput.View()},
-		{m.dueEditing, m.dueView(true)},
-		{m.prioritySelecting, m.priorityView(true)},
-		{m.descEditing, m.descInput.View()},
-		{m.tagsEditing, m.tagsInput.View()},
-		{m.recurEditing, m.recurInput.View()},
-		{m.projEditing, m.projInput.View()},
-		{m.filterEditing, m.filterInput.View()},
-		{m.addingTask, m.addInput.View()},
-		{m.searching, m.searchInput.View()},
-	}
-	for _, o := range overlays {
-		if o.active {
-			view = lipgloss.JoinVertical(lipgloss.Left, view, o.widget)
-		}
+	var overlay string
+	switch {
+	case m.annotating:
+		overlay = m.annotateInput.View()
+	case m.dueEditing:
+		overlay = m.dueView(true)
+	case m.prioritySelecting:
+		overlay = m.priorityView(true)
+	case m.descEditing:
+		overlay = m.descInput.View()
+	case m.tagsEditing:
+		overlay = m.tagsInput.View()
+	case m.recurEditing:
+		overlay = m.recurInput.View()
+	case m.projEditing:
+		overlay = m.projInput.View()
+	case m.filterEditing:
+		overlay = m.filterInput.View()
+	case m.addingTask:
+		overlay = m.addInput.View()
+	case m.searching:
+		overlay = m.searchInput.View()
+	}
+
+	if overlay != "" {
+		view = lipgloss.JoinVertical(lipgloss.Left, view, overlay)
 	}
 	return view
 }
@@ -888,49 +891,6 @@ func (m Model) topStatusLine() string {
 		Render(line)
 }
 
-func (m Model) taskToRow(t task.Task) atable.Row {
-	style := lipgloss.NewStyle()
-	if t.Start != "" {
-		style = style.Background(lipgloss.Color(m.theme.StartBG))
-	}
-	if t.ID == m.blinkID && m.blinkOn {
-		style = style.Reverse(true)
-	}
-
-	age := ""
-	if ts, err := time.Parse(task.DateFormat, t.Entry); err == nil {
-		days := int(time.Since(ts).Hours() / 24)
-		age = fmt.Sprintf("%dd", days)
-	}
-
-	tags := strings.Join(t.Tags, " ")
-	urg := fmt.Sprintf("%.1f", t.Urgency)
-	recur := t.Recur
-
-	var anns []string
-	for _, a := range t.Annotations {
-		anns = append(anns, a.Description)
-	}
-
-	annStr := ""
-	if n := len(anns); n > 0 {
-		annStr = strconv.FormatInt(int64(n), 16)
-	}
-
-	return atable.Row{
-		m.formatPriority(t.Priority, m.priWidth),
-		style.Render(strconv.Itoa(t.ID)),
-		style.Render(age),
-		m.formatDue(t.Due, m.dueWidth),
-		style.Render(recur),
-		style.Render(t.Project),
-		style.Render(tags),
-		style.Render(annStr),
-		style.Render(t.Description),
-		style.Render(m.formatUrgency(urg, m.urgWidth)),
-	}
-}
-
 // formatDue returns a formatted due date string. Dates due today or tomorrow
 // are returned as "today" or "tomorrow" respectively. Past due dates are
 // highlighted in red.
@@ -1292,12 +1252,3 @@ func (m *Model) applyTheme() {
 func (m *Model) SetDisco(d bool) {
 	m.disco = d
 }
-
-func centerLines(s string, width int) string {
-	lines := strings.Split(strings.TrimRight(s, "\n"), "\n")
-	style := lipgloss.NewStyle().Width(width).Align(lipgloss.Center)
-	for i, l := range lines {
-		lines[i] = style.Render(l)
-	}
-	return strings.Join(lines, "\n")
-}
diff --git a/internal/ui/theme.go b/internal/ui/theme.go
index 7faebf5..9d81aab 100644
--- a/internal/ui/theme.go
+++ b/internal/ui/theme.go
@@ -1,6 +1,7 @@
 package ui
 
 import (
+	"math/rand"
 	"strconv"
 )
 
@@ -63,7 +64,7 @@ func RandomTheme() Theme {
 }
 
 func randColor() string {
-	return strconv.Itoa(rng.Intn(256))
+	return strconv.Itoa(rand.Intn(256))
 }
 
 func contrastColor(bg string) string {