feat: rewrite gh-commit in Go with local Ollama backend

Replaces the Python/Crush/DuckDB implementation with a CGO-free Go binary:
cobra CLI, modernc.org/sqlite storage, huh/lipgloss UI, and speed-tuned raw
/api/generate calls (think:false, keep_alive, capped num_predict) against a
local qwen3.5:2b. Ships as a gh extension via cli/gh-extension-precompile.

cmd/list.go

@@ -0,0 +1,56 @@
+package cmd
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/charmbracelet/lipgloss"
+	"github.com/charmbracelet/lipgloss/table"
+	"github.com/spf13/cobra"
+
+	"github.com/prdlk/gh-commit/internal/ui"
+)
+
+var listCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List all configured repositories",
+	Args:  cobra.NoArgs,
+	RunE: func(_ *cobra.Command, _ []string) error {
+		ui.MagentaBoldf("Repositories")
+		ui.Println()
+
+		repos, err := store.ListRepos()
+		if err != nil {
+			return err
+		}
+		if len(repos) == 0 {
+			ui.Dimf("No repositories configured yet")
+			ui.Println()
+			ui.Infof("Run 'gh commit init' in a git repository to get started")
+			return nil
+		}
+
+		t := table.New().
+			Border(lipgloss.NormalBorder()).
+			Headers("Name", "Path", "Scopes").
+			StyleFunc(func(row, col int) lipgloss.Style {
+				s := lipgloss.NewStyle().Padding(0, 1)
+				if col == 2 {
+					s = s.Align(lipgloss.Right)
+				}
+				if row == table.HeaderRow || col == 0 {
+					s = s.Bold(true)
+				}
+				return s
+			})
+		for _, r := range repos {
+			t.Row(r.Name, r.Path, strconv.Itoa(r.ScopeCount))
+		}
+		fmt.Println(t)
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(listCmd)
+}