Allow user to save patch file to disk

cmd/roborev/tui/handlers_modal.go

@@ -1,6 +1,9 @@
 package tui
 
 import (
+	"fmt"
+	"os"
+	"path/filepath"
 	"strings"
 	"time"
 	"unicode"
@@ -465,6 +468,39 @@ func (m model) handleTasksKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 
 // handlePatchKey handles key input in the patch viewer.
 func (m model) handlePatchKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
+	// When the save-filename input is active, route keys there.
+	if m.savePatchInputActive {
+		switch msg.String() {
+		case "ctrl+c":
+			return m, tea.Quit
+		case "esc":
+			m.savePatchInputActive = false
+			m.savePatchInput = ""
+			return m, nil
+		case "enter":
+			path := strings.TrimSpace(m.savePatchInput)
+			if path == "" {
+				return m, nil
+			}
+			m.savePatchInputActive = false
+			m.savePatchInput = ""
+			return m, m.savePatchToFile(path)
+		case "backspace":
+			if len(m.savePatchInput) > 0 {
+				runes := []rune(m.savePatchInput)
+				m.savePatchInput = string(runes[:len(runes)-1])
+			}
+			return m, nil
+		default:
+			for _, r := range msg.Runes {
+				if unicode.IsPrint(r) {
+					m.savePatchInput += string(r)
+				}
+			}
+			return m, nil
+		}
+	}
+
 	switch msg.String() {
 	case "ctrl+c":
 		return m, tea.Quit
@@ -474,6 +510,10 @@ func (m model) handlePatchKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		m.patchScroll = 0
 		m.patchJobID = 0
 		return m, nil
+	case "s":
+		m.savePatchInputActive = true
+		m.savePatchInput = filepath.Join(os.TempDir(), fmt.Sprintf("roborev-%d.patch", m.patchJobID))
+		return m, nil
 	case "up", "k":
 		if m.patchScroll > 0 {
 			m.patchScroll--
@@ -501,3 +541,14 @@ func (m model) handlePatchKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 	}
 	return m, nil
 }
+
+// savePatchToFile writes the current patch text to path.
+func (m model) savePatchToFile(path string) tea.Cmd {
+	patch := m.patchText
+	return func() tea.Msg {
+		if err := os.WriteFile(path, []byte(patch), 0o644); err != nil {
+			return savePatchResultMsg{err: err}
+		}
+		return savePatchResultMsg{path: path}
+	}
+}

cmd/roborev/tui/handlers_msg.go

@@ -653,6 +653,16 @@ func (m model) handleClipboardResultMsg(
 	return m, nil
 }
 
+// handleSavePatchResultMsg processes save-patch-to-file results.
+func (m model) handleSavePatchResultMsg(msg savePatchResultMsg) (tea.Model, tea.Cmd) {
+	if msg.err != nil {
+		m.err = fmt.Errorf("save patch failed: %w", msg.err)
+	} else {
+		m.setFlash("Saved to "+msg.path, 3*time.Second, viewPatch)
+	}
+	return m, nil
+}
+
 // handleReconnectMsg processes daemon reconnection attempts.
 func (m model) handleReconnectMsg(msg reconnectMsg) (tea.Model, tea.Cmd) {
 	m.reconnecting = false

cmd/roborev/tui/render_tasks.go

@@ -495,9 +495,23 @@ func (m model) renderPatchView() string {
 		}
 	}
 
-	b.WriteString(renderHelpTable([][]helpItem{
-		{{"j/k/↑/↓", "scroll"}, {"esc", "back to tasks"}},
-	}, m.width))
+	if m.savePatchInputActive {
+		label := "Save to: "
+		inputWidth := max(m.width-len(label)-2, 10)
+		display := m.savePatchInput
+		if len(display) > inputWidth {
+			display = display[len(display)-inputWidth:]
+		}
+		display = display + strings.Repeat(" ", max(inputWidth-len(display), 0))
+		b.WriteString(helpStyle.Render(label) + display + "\x1b[K\n")
+		b.WriteString(renderHelpTable([][]helpItem{
+			{{"enter", "save"}, {"esc", "cancel"}},
+		}, m.width))
+	} else {
+		b.WriteString(renderHelpTable([][]helpItem{
+			{{"j/k/↑/↓", "scroll"}, {"s", "save"}, {"esc", "back to tasks"}},
+		}, m.width))
+	}
 	b.WriteString("\x1b[K\x1b[J")
 	return b.String()
 }

cmd/roborev/tui/tui.go

@@ -370,14 +370,16 @@ type model struct {
 	reviewFromView viewKind // View to return to when exiting review (queue or tasks)
 
 	// Fix task state
-	fixJobs        []storage.ReviewJob // Fix jobs for tasks view
-	fixSelectedIdx int                 // Selected index in tasks view
-	fixPromptText  string              // Editable fix prompt text
-	fixPromptJobID int64               // Parent job ID for fix prompt modal
-	fixShowHelp    bool                // Show help overlay in tasks view
-	patchText      string              // Current patch text for patch viewer
-	patchScroll    int                 // Scroll offset in patch viewer
-	patchJobID     int64               // Job ID of the patch being viewed
+	fixJobs              []storage.ReviewJob // Fix jobs for tasks view
+	fixSelectedIdx       int                 // Selected index in tasks view
+	fixPromptText        string              // Editable fix prompt text
+	fixPromptJobID       int64               // Parent job ID for fix prompt modal
+	fixShowHelp          bool                // Show help overlay in tasks view
+	patchText            string              // Current patch text for patch viewer
+	patchScroll          int                 // Scroll offset in patch viewer
+	patchJobID           int64               // Job ID of the patch being viewed
+	savePatchInputActive bool                // Whether the save-filename input is visible
+	savePatchInput       string              // Current text in the save-filename input
 
 	// Inline fix panel (review view)
 	reviewFixPanelOpen    bool // true when fix panel is visible in review view
@@ -692,6 +694,8 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		result, cmd = m.handlePatchResultMsg(msg)
 	case applyPatchResultMsg:
 		result, cmd = m.handleApplyPatchResultMsg(msg)
+	case savePatchResultMsg:
+		result, cmd = m.handleSavePatchResultMsg(msg)
 	case configSaveErrMsg:
 		m.colOptionsDirty = true
 		m.setFlash(

cmd/roborev/tui/types.go

@@ -230,6 +230,11 @@ type patchMsg struct {
 	err   error
 }
 
+type savePatchResultMsg struct {
+	path string
+	err  error
+}
+
 // ClipboardWriter is an interface for clipboard operations (allows mocking in tests)
 type ClipboardWriter interface {
 	WriteText(text string) error