Status optimization

CONTRIBUTING.md

@@ -56,7 +56,7 @@ Contributions and communications are expected to occur through:
 
 - [GitHub Issues](https://github.com/entireio/cli/issues) - Bug reports and feature requests
 - [GitHub Discussions](https://github.com/entireio/cli/discussions) - Questions and general conversation
-- [Discord](https://discord.gg/4WXDu2Ph) - Real-time chat and support
+- [Discord](https://discord.gg/jZJs3Tue4S) - Real-time chat and support
 
 Please represent the project and community respectfully in all public and private interactions.
 
@@ -329,7 +329,7 @@ Join the Entire community:
 - **Discord** - [Join our server][discord] for discussions and support
 - **GitHub Discussions** - [Join the conversation][discussions]
 
-[discord]: https://discord.gg/4WXDu2Ph
+[discord]: https://discord.gg/jZJs3Tue4S
 [discussions]: https://github.com/entireio/cli/discussions
 
 ---

cmd/entire/cli/bench_test.go

@@ -0,0 +1,85 @@
+package cli
+
+import (
+	"io"
+	"testing"
+
+	"github.com/entireio/cli/cmd/entire/cli/benchutil"
+	"github.com/entireio/cli/cmd/entire/cli/paths"
+	"github.com/entireio/cli/cmd/entire/cli/session"
+)
+
+/* To use the interactive flame graph, run:
+
+mise exec -- go tool pprof -http=:8089 /tmp/status_cpu.prof &>/dev/null & echo "pprof server started on http://localhost:8089"
+
+and then go to http://localhost:8089/ui/flamegraph
+
+*/
+
+// BenchmarkStatusCommand benchmarks the `entire status` command end-to-end.
+// This is the top-level entry point for understanding status command latency.
+//
+// Key I/O operations measured:
+//   - git rev-parse --show-toplevel (RepoRoot, cached after first call)
+//   - git rev-parse --git-common-dir (NewStateStore, per invocation)
+//   - git rev-parse --abbrev-ref HEAD (resolveWorktreeBranch, per unique worktree)
+//   - os.ReadFile for settings.json, each session state file
+//   - JSON unmarshaling for settings and each session state
+//
+// The primary scaling dimension is active session count.
+func BenchmarkStatusCommand(b *testing.B) {
+	b.Run("Short/NoSessions", benchStatus(0, false, true))
+	b.Run("Short/1Session", benchStatus(1, false, true))
+	b.Run("Short/5Sessions", benchStatus(5, false, true))
+	b.Run("Short/10Sessions", benchStatus(10, false, true))
+	b.Run("Short/20Sessions", benchStatus(20, false, true))
+	b.Run("Detailed/NoSessions", benchStatus(0, true, true))
+	b.Run("Detailed/5Sessions", benchStatus(5, true, true))
+}
+
+// BenchmarkStatusCommand_NoCache simulates the old behavior where getGitCommonDir
+// is uncached — every invocation spawns an extra git subprocess.
+func BenchmarkStatusCommand_NoCache(b *testing.B) {
+	b.Run("Short/NoSessions", benchStatus(0, false, false))
+	b.Run("Short/1Session", benchStatus(1, false, false))
+	b.Run("Short/5Sessions", benchStatus(5, false, false))
+	b.Run("Short/10Sessions", benchStatus(10, false, false))
+	b.Run("Short/20Sessions", benchStatus(20, false, false))
+	b.Run("Detailed/NoSessions", benchStatus(0, true, false))
+	b.Run("Detailed/5Sessions", benchStatus(5, true, false))
+}
+
+// benchStatus returns a benchmark function for the `entire status` command.
+// When useGitCommonDirCache is false, it clears the git common dir cache each
+// iteration to simulate the old uncached behavior.
+func benchStatus(sessionCount int, detailed, useGitCommonDirCache bool) func(*testing.B) {
+	return func(b *testing.B) {
+		repo := benchutil.NewBenchRepo(b, benchutil.RepoOpts{})
+
+		// Create active session state files in .git/entire-sessions/
+		for range sessionCount {
+			repo.CreateSessionState(b, benchutil.SessionOpts{})
+		}
+
+		// runStatus uses paths.RepoRoot() which requires cwd to be in the repo.
+		b.Chdir(repo.Dir)
+		paths.ClearRepoRootCache()
+		session.ClearGitCommonDirCache()
+
+		b.ResetTimer()
+		for range b.N {
+			// Always clear RepoRoot to simulate a fresh CLI invocation.
+			paths.ClearRepoRootCache()
+
+			if !useGitCommonDirCache {
+				// Simulate old behavior: no git common dir cache.
+				session.ClearGitCommonDirCache()
+			}
+
+			if err := runStatus(io.Discard, detailed); err != nil {
+				b.Fatalf("runStatus: %v", err)
+			}
+		}
+	}
+}