fix(tui): pin footer to bottom, style hint bar, auto-clear status

Content area now enforces full height so the context help bar stays
pinned to the terminal bottom. Hint keys rendered with bold highlight
color for scannability. Status messages (created, deleted, etc.)
auto-clear after 2 seconds, reverting to the entity count.

internal/tui/statusbar.go

@@ -2,24 +2,40 @@ package tui
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/charmbracelet/lipgloss"
 )
 
+type hint struct {
+	key  string
+	desc string
+}
+
+func renderHints(hints []hint) string {
+	parts := make([]string, len(hints))
+	for i, h := range hints {
+		parts[i] = hintKeyStyle.Render(h.key) + " " + hintDescStyle.Render(h.desc)
+	}
+	return strings.Join(parts, "  ")
+}
+
 func renderStatusBar(m model, width int) string {
 	left := countText(m)
-	right := contextHints(m)
+	if m.status != "" {
+		left = m.status
+	}
+	right := renderHints(contextHints(m))
 
 	leftRendered := statusStyle.Render(left)
-	rightRendered := helpStyle.Render(right)
 
-	gap := width - lipgloss.Width(leftRendered) - lipgloss.Width(rightRendered)
+	gap := width - lipgloss.Width(leftRendered) - lipgloss.Width(right)
 	if gap < 0 {
 		gap = 0
 	}
 
 	pad := lipgloss.NewStyle().Width(gap).Render("")
-	return leftRendered + pad + rightRendered
+	return leftRendered + pad + right
 }
 
 func countText(m model) string {
@@ -35,37 +51,37 @@ func countText(m model) string {
 	return fmt.Sprintf("%d entities", total)
 }
 
-func contextHints(m model) string {
+func contextHints(m model) []hint {
 	switch m.state {
 	case stateDetail:
 		switch m.detail.mode {
 		case detailRun:
-			return "space:toggle  j/k:nav  r:reset  esc:save+exit"
+			return []hint{{"space", "toggle"}, {"j/k", "nav"}, {"r", "reset"}, {"esc", "save+exit"}}
 		case detailFill:
-			return "tab:next  shift+tab:prev  enter:copy  esc:cancel"
+			return []hint{{"tab", "next"}, {"⇧tab", "prev"}, {"enter", "copy"}, {"esc", "cancel"}}
 		default:
-			return "p:promote D:demote c:copy e:edit r:run f:fill !:pin esc:back"
+			return []hint{{"p", "promote"}, {"D", "demote"}, {"c", "copy"}, {"e", "edit"}, {"r", "run"}, {"f", "fill"}, {"!", "pin"}, {"esc", "back"}}
 		}
 	case stateInput:
-		return ""
+		return nil
 	case stateTagFilter:
-		return "j/k:nav enter:select esc:cancel"
+		return []hint{{"j/k", "nav"}, {"enter", "select"}, {"esc", "cancel"}}
 	case stateConfirm:
-		return "y:confirm n:cancel"
+		return []hint{{"y", "confirm"}, {"n", "cancel"}}
 	case statePromote:
-		return "j/k:nav enter:select esc:cancel"
+		return []hint{{"j/k", "nav"}, {"enter", "select"}, {"esc", "cancel"}}
 	case stateAbsorb:
-		return "j/k:nav enter:absorb esc:cancel"
+		return []hint{{"j/k", "nav"}, {"enter", "absorb"}, {"esc", "cancel"}}
 	default:
 		if m.splitDetail {
 			if m.focus == focusDetail {
-				return "h:list c:copy e:edit p:promote D:demote !:pin esc:back"
+				return []hint{{"h", "list"}, {"c", "copy"}, {"e", "edit"}, {"p", "promote"}, {"D", "demote"}, {"!", "pin"}, {"esc", "back"}}
 			}
-			return "l:detail a:add d:del #:filter esc:close ?:help q:quit"
+			return []hint{{"l", "detail"}, {"a", "add"}, {"d", "del"}, {"#", "filter"}, {"esc", "close"}, {"?", "help"}, {"q", "quit"}}
 		}
 		if m.mode == modeCards {
-			return "1:stream 2:cards s:sort tab:intent a:add ?:help q:quit"
+			return []hint{{"1", "stream"}, {"2", "cards"}, {"s", "sort"}, {"tab", "intent"}, {"a", "add"}, {"?", "help"}, {"q", "quit"}}
 		}
-		return "1:stream 2:cards a:add/?search m:absorb d:del #:filter ?:help q:quit"
+		return []hint{{"1", "stream"}, {"2", "cards"}, {"a", "add"}, {"?", "search"}, {"m", "absorb"}, {"d", "del"}, {"#", "filter"}, {"?", "help"}, {"q", "quit"}}
 	}
 }