Add GitHub PR shell via wl review --gh-pr

Create a real GitHub PR as a discussion venue for Dolt data reviews.
The --gh-pr flag pushes the Dolt branch to the rig's GitHub fork,
creates a git-native branch with a .wasteland/ marker file via the
GitHub API, and opens a cross-fork PR against the upstream repo.
Re-running updates the existing PR. wl merge auto-closes the PR.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: julianknutsen

cmd/wl/cmd_config.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"io"
+	"strings"
 
 	"github.com/spf13/cobra"
 	"github.com/steveyegge/wasteland/internal/federation"
@@ -18,7 +19,8 @@ Use 'wl config get <key>' to read a setting.
 Use 'wl config set <key> <value>' to change a setting.
 
 Supported keys:
-  mode   Workflow mode: wild-west (default) or pr`,
+  mode          Workflow mode: wild-west (default) or pr
+  github-repo   Upstream GitHub repo for PR shells (owner/repo)`,
 		Args: cobra.NoArgs,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			return cmd.Help()
@@ -57,34 +59,43 @@ func newConfigSetCmd(stdout, stderr io.Writer) *cobra.Command {
 
 // validConfigKeys lists the keys that can be read/written via wl config.
 var validConfigKeys = map[string]bool{
-	"mode": true,
+	"mode":        true,
+	"github-repo": true,
 }
 
 func runConfigGet(cmd *cobra.Command, stdout, _ io.Writer, key string) error {
 	if !validConfigKeys[key] {
-		return fmt.Errorf("unknown config key %q (supported: mode)", key)
+		return fmt.Errorf("unknown config key %q (supported: mode, github-repo)", key)
 	}
 
 	cfg, err := resolveWasteland(cmd)
 	if err != nil {
 		return fmt.Errorf("loading wasteland config: %w", err)
 	}
 
-	if key == "mode" {
+	switch key {
+	case "mode":
 		fmt.Fprintln(stdout, cfg.ResolveMode())
+	case "github-repo":
+		fmt.Fprintln(stdout, cfg.GitHubRepo)
 	}
 	return nil
 }
 
 func runConfigSet(cmd *cobra.Command, stdout, _ io.Writer, key, value string) error {
 	if !validConfigKeys[key] {
-		return fmt.Errorf("unknown config key %q (supported: mode)", key)
+		return fmt.Errorf("unknown config key %q (supported: mode, github-repo)", key)
 	}
 
-	if key == "mode" {
+	switch key {
+	case "mode":
 		if err := validateMode(value); err != nil {
 			return err
 		}
+	case "github-repo":
+		if err := validateGitHubRepo(value); err != nil {
+			return err
+		}
 	}
 
 	explicit, _ := cmd.Flags().GetString("wasteland")
@@ -94,8 +105,11 @@ func runConfigSet(cmd *cobra.Command, stdout, _ io.Writer, key, value string) er
 		return fmt.Errorf("loading wasteland config: %w", err)
 	}
 
-	if key == "mode" {
+	switch key {
+	case "mode":
 		cfg.Mode = value
+	case "github-repo":
+		cfg.GitHubRepo = value
 	}
 
 	if err := store.Save(cfg); err != nil {
@@ -106,6 +120,14 @@ func runConfigSet(cmd *cobra.Command, stdout, _ io.Writer, key, value string) er
 	return nil
 }
 
+func validateGitHubRepo(value string) error {
+	parts := strings.SplitN(value, "/", 2)
+	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
+		return fmt.Errorf("invalid github-repo %q: expected format \"owner/repo\"", value)
+	}
+	return nil
+}
+
 func validateMode(value string) error {
 	switch value {
 	case federation.ModeWildWest, federation.ModePR:

cmd/wl/cmd_config_test.go

@@ -30,3 +30,25 @@ func TestValidConfigKeys(t *testing.T) {
 		t.Error("'nonexistent' should not be a valid config key")
 	}
 }
+
+func TestValidConfigKeys_GitHubRepo(t *testing.T) {
+	if !validConfigKeys["github-repo"] {
+		t.Error("expected 'github-repo' to be a valid config key")
+	}
+}
+
+func TestValidateGitHubRepo_Valid(t *testing.T) {
+	for _, repo := range []string{"owner/repo", "steveyegge/wl-commons", "a/b"} {
+		if err := validateGitHubRepo(repo); err != nil {
+			t.Errorf("validateGitHubRepo(%q) = %v, want nil", repo, err)
+		}
+	}
+}
+
+func TestValidateGitHubRepo_Invalid(t *testing.T) {
+	for _, repo := range []string{"", "noslash", "/bad", "bad/", "/"} {
+		if err := validateGitHubRepo(repo); err == nil {
+			t.Errorf("validateGitHubRepo(%q) = nil, want error", repo)
+		}
+	}
+}

cmd/wl/cmd_merge.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"io"
+	"os/exec"
 
 	"github.com/spf13/cobra"
 	"github.com/steveyegge/wasteland/internal/commons"
@@ -71,5 +72,12 @@ func runMerge(cmd *cobra.Command, stdout, _ io.Writer, branch string, noPush, ke
 		_ = commons.PushWithSync(cfg.LocalDir, stdout)
 	}
 
+	// Best-effort: auto-close the corresponding GitHub PR shell.
+	if cfg.GitHubRepo != "" {
+		if ghPath, err := exec.LookPath("gh"); err == nil {
+			closeGitHubPR(ghPath, cfg.GitHubRepo, cfg.ForkOrg, cfg.ForkDB, branch, stdout)
+		}
+	}
+
 	return nil
 }