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/misc.go

@@ -0,0 +1,62 @@
+package cmd
+
+import (
+	"fmt"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+
+	"github.com/prdlk/gh-commit/internal/db"
+	"github.com/prdlk/gh-commit/internal/ui"
+)
+
+var removeCmd = &cobra.Command{
+	Use:   "remove",
+	Short: "Remove the current repository from the database",
+	Args:  cobra.NoArgs,
+	RunE: func(_ *cobra.Command, _ []string) error {
+		repoPath, err := requireGit()
+		if err != nil {
+			return err
+		}
+		hasScopes, err := store.HasScopes(repoPath)
+		if err != nil {
+			return err
+		}
+		if !hasScopes {
+			ui.Dimf("Repository not in database: %s", filepath.Base(repoPath))
+			return nil
+		}
+		if ui.Confirm(fmt.Sprintf("Remove %s from database?", filepath.Base(repoPath))) {
+			if err := store.DeleteRepo(repoPath); err != nil {
+				return err
+			}
+			ui.Successf("✓ Removed %s", filepath.Base(repoPath))
+		} else {
+			ui.Dimf("Cancelled")
+		}
+		return nil
+	},
+}
+
+var dbPathCmd = &cobra.Command{
+	Use:   "db-path",
+	Short: "Print the database file path",
+	Args:  cobra.NoArgs,
+	Run: func(_ *cobra.Command, _ []string) {
+		fmt.Println(db.Path())
+	},
+}
+
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Print the version",
+	Args:  cobra.NoArgs,
+	Run: func(_ *cobra.Command, _ []string) {
+		fmt.Printf("gh-commit %s\n", version)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(removeCmd, dbPathCmd, versionCmd)
+}