Add multi-repo workspace support

cmd/roborev/list.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"net/url"
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"text/tabwriter"
@@ -75,12 +76,22 @@ Examples:
 				branch = git.GetCurrentBranch(localRepoPath)
 			}
 
+			// Workspace mode: not in a git repo and no --repo specified
+			var repoPrefix string
+			if repoPath == "" && localRepoPath == "" {
+				if abs, err := filepath.Abs("."); err == nil {
+					repoPrefix = filepath.ToSlash(abs)
+				}
+			}
+
 			// Build query URL
 			params := url.Values{}
-			if repoPath != "" {
+			if repoPrefix != "" {
+				params.Set("repo_prefix", repoPrefix)
+			} else if repoPath != "" {
 				params.Set("repo", repoPath)
 			}
-			if branch != "" {
+			if branch != "" && (repoPrefix == "" || cmd.Flags().Changed("branch")) {
 				params.Set("branch", branch)
 				params.Set("branch_include_empty", "true")
 			}

cmd/roborev/list_test.go

@@ -240,6 +240,34 @@ func TestListCommand(t *testing.T) {
 				}
 			},
 		},
+		{
+			name: "workspace mode suppresses auto-detected branch",
+			repoSetup: func(t *testing.T) repoSetupResult {
+				// Create a non-git parent dir (workspace mode)
+				parent := t.TempDir()
+				return repoSetupResult{
+					workingDir: parent,
+					repo:       nil,
+					extraArgs:  nil,
+				}
+			},
+			handler:      jobsHandler([]storage.ReviewJob{}, false),
+			wantQuery:    []string{"repo_prefix="},
+			notWantQuery: []string{"branch="},
+		},
+		{
+			name: "workspace mode honors explicit --branch",
+			repoSetup: func(t *testing.T) repoSetupResult {
+				parent := t.TempDir()
+				return repoSetupResult{
+					workingDir: parent,
+					repo:       nil,
+					extraArgs:  []string{"--branch", "main"},
+				}
+			},
+			handler:   jobsHandler([]storage.ReviewJob{}, false),
+			wantQuery: []string{"repo_prefix=", "branch=main", "branch_include_empty=true"},
+		},
 	}
 
 	for _, tc := range tests {

cmd/roborev/review.go

@@ -7,6 +7,9 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
 
 	"github.com/roborev-dev/roborev/internal/agent"
 	"github.com/roborev-dev/roborev/internal/config"
@@ -80,6 +83,17 @@ Examples:
 				if quiet {
 					return nil // Not a repo - silent exit for hooks
 				}
+				// Scan for child git repos to give a helpful hint
+				if children := findChildGitRepos(repoPath); len(children) > 0 {
+					absDir, _ := filepath.Abs(repoPath)
+					var b strings.Builder
+					b.WriteString("not in a git repository; use --repo to specify one:")
+					for _, name := range children {
+						b.WriteString("\n  roborev review --repo ")
+						b.WriteString(filepath.Join(absDir, name))
+					}
+					return fmt.Errorf("%s", b.String())
+				}
 				return fmt.Errorf("not a git repository: %w", err)
 			}
 
@@ -411,3 +425,22 @@ func runLocalReview(cmd *cobra.Command, repoPath, gitRef, diffContent, agentName
 	}
 	return nil
 }
+
+// findChildGitRepos returns the names of immediate child directories that are git repos.
+func findChildGitRepos(dir string) []string {
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return nil
+	}
+	var repos []string
+	for _, e := range entries {
+		if !e.IsDir() || e.Name()[0] == '.' {
+			continue
+		}
+		gitDir := filepath.Join(dir, e.Name(), ".git")
+		if _, err := os.Stat(gitDir); err == nil {
+			repos = append(repos, e.Name())
+		}
+	}
+	return repos
+}

cmd/roborev/review_test.go

@@ -548,3 +548,78 @@ func TestReviewInvalidArgsNoSideEffects(t *testing.T) {
 		}
 	}
 }
+
+func TestFindChildGitRepos(t *testing.T) {
+	parent := t.TempDir()
+
+	// Create a regular git repo (directory .git)
+	regularRepo := filepath.Join(parent, "regular")
+	os.Mkdir(regularRepo, 0755)
+	os.Mkdir(filepath.Join(regularRepo, ".git"), 0755)
+
+	// Create a worktree-style repo (.git is a file)
+	worktreeRepo := filepath.Join(parent, "worktree")
+	os.Mkdir(worktreeRepo, 0755)
+	os.WriteFile(
+		filepath.Join(worktreeRepo, ".git"),
+		[]byte("gitdir: /some/main/.git/worktrees/wt"),
+		0644,
+	)
+
+	// Create a non-repo directory (no .git at all)
+	plainDir := filepath.Join(parent, "plain")
+	os.Mkdir(plainDir, 0755)
+
+	// Create a hidden directory (should be skipped)
+	hiddenDir := filepath.Join(parent, ".hidden")
+	os.Mkdir(hiddenDir, 0755)
+	os.Mkdir(filepath.Join(hiddenDir, ".git"), 0755)
+
+	repos := findChildGitRepos(parent)
+
+	if len(repos) != 2 {
+		t.Fatalf("Expected 2 repos, got %d: %v", len(repos), repos)
+	}
+
+	found := make(map[string]bool)
+	for _, r := range repos {
+		found[r] = true
+	}
+	if !found["regular"] {
+		t.Error("Expected 'regular' in results")
+	}
+	if !found["worktree"] {
+		t.Error("Expected 'worktree' in results (has .git file)")
+	}
+	if found["plain"] {
+		t.Error("'plain' should not be in results")
+	}
+	if found[".hidden"] {
+		t.Error("'.hidden' should not be in results")
+	}
+}
+
+func TestFindChildGitReposHintPaths(t *testing.T) {
+	parent := t.TempDir()
+
+	// Create a regular git repo
+	repoDir := filepath.Join(parent, "my-repo")
+	os.Mkdir(repoDir, 0755)
+	os.Mkdir(filepath.Join(repoDir, ".git"), 0755)
+
+	// Run the review command against the parent dir (not a git repo)
+	// to verify the hint message contains full paths
+	_, _, err := executeReviewCmd("--repo", parent)
+	if err == nil {
+		t.Fatal("Expected error for non-git directory")
+	}
+
+	errMsg := err.Error()
+	expectedPath := filepath.Join(parent, "my-repo")
+	if !strings.Contains(errMsg, expectedPath) {
+		t.Errorf(
+			"Hint should contain full path %q, got: %s",
+			expectedPath, errMsg,
+		)
+	}
+}

cmd/roborev/show.go

@@ -54,10 +54,12 @@ Examples:
 				}
 				// Default to HEAD
 				sha := "HEAD"
-				if root, err := git.GetRepoRoot("."); err == nil {
-					if resolved, err := git.ResolveSHA(root, sha); err == nil {
-						sha = resolved
-					}
+				root, rootErr := git.GetRepoRoot(".")
+				if rootErr != nil {
+					return fmt.Errorf("not in a git repository; use a job ID instead (e.g., roborev show 42)")
+				}
+				if resolved, err := git.ResolveSHA(root, sha); err == nil {
+					sha = resolved
 				}
 				queryURL = addr + "/api/review?sha=" + sha
 				displayRef = git.ShortSHA(sha)

cmd/roborev/show_test.go

@@ -141,6 +141,39 @@ func TestShowOutputFormat(t *testing.T) {
 	}
 }
 
+func TestShowOutsideGitRepo(t *testing.T) {
+	t.Run("no args outside git repo returns guidance error", func(t *testing.T) {
+		nonGitDir := t.TempDir()
+		chdir(t, nonGitDir)
+
+		mockReviewDaemon(t, storage.Review{})
+
+		cmd := showCmd()
+		cmd.SetArgs([]string{})
+		err := cmd.Execute()
+		assertErrorContains(t, err, "not in a git repository")
+		assertErrorContains(t, err, "job ID")
+	})
+
+	t.Run("job ID outside git repo still works", func(t *testing.T) {
+		nonGitDir := t.TempDir()
+		chdir(t, nonGitDir)
+
+		getQuery := mockReviewDaemon(t, storage.Review{
+			ID: 1, JobID: 42, Output: "LGTM", Agent: "test",
+		})
+
+		output := runShowCmd(t, "--job", "42")
+		q := getQuery()
+		if !strings.Contains(q, "job_id=42") {
+			t.Errorf("expected job_id=42 in query, got: %s", q)
+		}
+		if !strings.Contains(output, "LGTM") {
+			t.Errorf("expected review output in result, got: %s", output)
+		}
+	})
+}
+
 func TestShowJSONOutput(t *testing.T) {
 	repo := newTestGitRepo(t)
 	repo.CommitFile("file.txt", "content", "initial commit")

internal/daemon/server.go

@@ -10,6 +10,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"sync"
@@ -815,6 +816,10 @@ func (s *Server) handleListJobs(w http.ResponseWriter, r *http.Request) {
 	status := r.URL.Query().Get("status")
 	repo := r.URL.Query().Get("repo")
 	gitRef := r.URL.Query().Get("git_ref")
+	repoPrefix := r.URL.Query().Get("repo_prefix")
+	if repoPrefix != "" {
+		repoPrefix = filepath.ToSlash(filepath.Clean(repoPrefix))
+	}
 
 	// Parse limit from query, default to 50, 0 means no limit
 	// Clamp to valid range: 0 (unlimited) or 1-10000
@@ -870,6 +875,9 @@ func (s *Server) handleListJobs(w http.ResponseWriter, r *http.Request) {
 	if exJobType := r.URL.Query().Get("exclude_job_type"); exJobType != "" {
 		listOpts = append(listOpts, storage.WithExcludeJobType(exJobType))
 	}
+	if repoPrefix != "" && repo == "" {
+		listOpts = append(listOpts, storage.WithRepoPrefix(repoPrefix))
+	}
 
 	jobs, err := s.db.ListJobs(status, repo, fetchLimit, offset, listOpts...)
 	if err != nil {
@@ -893,6 +901,9 @@ func (s *Server) handleListJobs(w http.ResponseWriter, r *http.Request) {
 			statsOpts = append(statsOpts, storage.WithBranch(branch))
 		}
 	}
+	if repoPrefix != "" && repo == "" {
+		statsOpts = append(statsOpts, storage.WithRepoPrefix(repoPrefix))
+	}
 	stats, statsErr := s.db.CountJobStats(repo, statsOpts...)
 	if statsErr != nil {
 		log.Printf("Warning: failed to count job stats: %v", statsErr)
@@ -911,18 +922,20 @@ func (s *Server) handleListRepos(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	// Optional branch filter
 	branch := r.URL.Query().Get("branch")
+	prefix := r.URL.Query().Get("prefix")
+	if prefix != "" {
+		prefix = filepath.ToSlash(filepath.Clean(prefix))
+	}
 
-	var repos []storage.RepoWithCount
-	var totalCount int
-	var err error
-
+	var repoOpts []storage.ListReposOption
+	if prefix != "" {
+		repoOpts = append(repoOpts, storage.WithRepoPathPrefix(prefix))
+	}
 	if branch != "" {
-		repos, totalCount, err = s.db.ListReposWithReviewCountsByBranch(branch)
-	} else {
-		repos, totalCount, err = s.db.ListReposWithReviewCounts()
+		repoOpts = append(repoOpts, storage.WithRepoBranch(branch))
 	}
+	repos, totalCount, err := s.db.ListReposWithReviewCounts(repoOpts...)
 	if err != nil {
 		writeError(w, http.StatusInternalServerError, fmt.Sprintf("list repos: %v", err))
 		return