feat: ejecutar tests desde el dashboard TUI

Se añade opción "Run Tests" al menú del servidor en el dashboard TUI.
Ejecuta `go test -tags goolm -count=1 ./...` y muestra los resultados
en una pantalla dedicada (ScreenTestOutput) con scroll y opción de re-ejecutar.

Cambios:
- pkg/tui: nuevo MsgTestsDone, ScreenTestOutput, IntentRunTests, updateTestOutput
- pkg/tui/view.go: viewTestOutput con scroll y controles (↑↓ r 0)
- shell/tui/adapter.go: runTests() ejecuta go test con el env del manager
- shell/process/manager.go: buildEnv → BuildEnv (exportado) para que el adapter
  pueda construir el env completo con las variables de .env

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

shell/process/manager.go

@@ -174,7 +174,7 @@ func (m *Manager) Start(info AgentInfo) error {
 		cmd = exec.Command(bin, "-c", info.ConfigPath)
 	}
 
-	cmd.Env = m.buildEnv()
+	cmd.Env = m.BuildEnv()
 	cmd.Stdout = logFile
 	cmd.Stderr = logFile
 	cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
@@ -385,7 +385,7 @@ func (m *Manager) LogPath(id string) string { return m.logPath(id) }
 // Returns the combined output and any error.
 func (m *Manager) Build() (string, error) {
 	cmd := exec.Command("bash", "build.sh")
-	cmd.Env = m.buildEnv()
+	cmd.Env = m.BuildEnv()
 	out, err := cmd.CombinedOutput()
 	return string(out), err
 }
@@ -416,7 +416,7 @@ func (m *Manager) StartUnified() error {
 		cmd = exec.Command(bin, "--log-level", "info")
 	}
 
-	cmd.Env = m.buildEnv()
+	cmd.Env = m.BuildEnv()
 	cmd.Stdout = logFile
 	cmd.Stderr = logFile
 	cmd.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
@@ -654,8 +654,8 @@ func (m *Manager) removePID(id string) {
 	_ = os.Remove(m.pidPath(id))
 }
 
-// buildEnv returns the environment for child processes: current env + .env file vars.
-func (m *Manager) buildEnv() []string {
+// BuildEnv returns the environment for child processes: current env + .env file vars.
+func (m *Manager) BuildEnv() []string {
 	env := os.Environ()
 	if m.envFile == "" {
 		return env

shell/tui/adapter.go

@@ -4,6 +4,7 @@ package tui
 
 import (
 	"fmt"
+	"os/exec"
 	"strings"
 	"time"
 
@@ -54,6 +55,9 @@ func (a *Adapter) RunIntent(intent puretui.Intent) tea.Cmd {
 	case puretui.IntentRebuildRestart:
 		return a.rebuildRestart()
 
+	case puretui.IntentRunTests:
+		return a.runTests()
+
 	case puretui.IntentTick:
 		return a.tick()
 
@@ -217,6 +221,28 @@ func (a *Adapter) loadLogs(id string) tea.Cmd {
 	}
 }
 
+func (a *Adapter) runTests() tea.Cmd {
+	return func() tea.Msg {
+		goBin, err := exec.LookPath("go")
+		if err != nil {
+			// Fallback to known location
+			goBin = "/usr/local/go/bin/go"
+		}
+		cmd := exec.Command(goBin, "test", "-tags", "goolm", "-count=1", "./...")
+		cmd.Env = a.mgr.BuildEnv()
+		out, err := cmd.CombinedOutput()
+
+		output := strings.TrimSpace(string(out))
+		if output == "" && err != nil {
+			output = "Error: " + err.Error()
+		}
+		lines := strings.Split(output, "\n")
+		passed := err == nil
+
+		return puretui.MsgTestsDone{Passed: passed, Output: lines}
+	}
+}
+
 func (a *Adapter) tick() tea.Cmd {
 	return tea.Tick(3*time.Second, func(time.Time) tea.Msg {
 		return puretui.MsgTick{}