Initial patterm project

cmd/patterm/main.go

@@ -0,0 +1,79 @@
+// patterm is a terminal-based agent orchestration shell. SPEC §2: one
+// foreground process owns the TUI, every PTY, and the in-process MCP
+// server. Closing the terminal window ends the session.
+//
+//	patterm                      run in $PWD
+//	patterm --project <dir>      run in <dir>
+//	patterm mcp-stdio --socket S --identity I
+//	                             internal: stdio MCP proxy spawned for
+//	                             children, forwards JSON-RPC over S
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+
+	"github.com/harrybrwn/patterm/internal/app"
+	"github.com/harrybrwn/patterm/internal/mcp"
+	"github.com/harrybrwn/patterm/internal/projectkey"
+)
+
+func main() {
+	// The mcp-stdio subcommand is a separate top-level mode: when an
+	// agent CLI launches `patterm mcp-stdio --socket ...`, the same
+	// binary forwards JSON-RPC to the running process over the per-PID
+	// socket. SPEC §10.
+	if len(os.Args) >= 2 && os.Args[1] == "mcp-stdio" {
+		os.Args = append(os.Args[:1], os.Args[2:]...)
+		runMCPProxy()
+		return
+	}
+
+	var projectDir = flag.String("project", "", "project directory (default $PWD)")
+	flag.Parse()
+
+	cwd, err := os.Getwd()
+	if err != nil {
+		die("getwd: %v", err)
+	}
+	if *projectDir != "" {
+		cwd = *projectDir
+	}
+	key, err := projectkey.Key(cwd)
+	if err != nil {
+		die("project key: %v", err)
+	}
+
+	if err := os.Chdir(cwd); err != nil {
+		die("chdir %s: %v", cwd, err)
+	}
+
+	ctx := context.Background()
+	if err := app.Run(ctx, app.Options{
+		ProjectDir: cwd,
+		ProjectKey: key,
+	}); err != nil {
+		die("%v", err)
+	}
+}
+
+func runMCPProxy() {
+	var (
+		socket   = flag.String("socket", "", "path to the running patterm process's MCP socket")
+		identity = flag.String("identity", "", "per-child identity token")
+	)
+	flag.Parse()
+	if *socket == "" || *identity == "" {
+		die("mcp-stdio: --socket and --identity are required")
+	}
+	if err := mcp.RunStdioProxy(*socket, *identity); err != nil {
+		die("mcp-stdio: %v", err)
+	}
+}
+
+func die(format string, args ...any) {
+	fmt.Fprintf(os.Stderr, "patterm: "+format+"\n", args...)
+	os.Exit(1)
+}