Refactor to support multiple instances inside single opencode process (#2360)

This release has a bunch of minor breaking changes if you are using opencode plugins or sdk

1. storage events have been removed (we might bring this back but had some issues)
2. concept of `app` is gone - there is a new concept called `project` and endpoints to list projects and get the current project
3. plugin receives `directory` which is cwd and `worktree` which is where the root of the project is if it's a git repo
4. the session.chat function has been renamed to session.prompt in sdk. it no longer requires model to be passed in (model is now an object)
5. every endpoint takes an optional `directory` parameter to operate as though opencode is running in that directory

4 files changed, 16 insertions, 12 deletions

diff --git a/packages/tui/internal/components/chat/editor.go b/packages/tui/internal/components/chat/editor.go
index 710049707..e43d297b8 100644
--- a/packages/tui/internal/components/chat/editor.go
+++ b/packages/tui/internal/components/chat/editor.go
@@ -160,7 +160,7 @@ func (m *editorComponent) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		if filePath := strings.TrimSpace(strings.TrimPrefix(text, "@")); strings.HasPrefix(text, "@") && filePath != "" {
 			statPath := filePath
 			if !filepath.IsAbs(filePath) {
-				statPath = filepath.Join(m.app.Info.Path.Cwd, filePath)
+				statPath = filepath.Join(util.CwdPath, filePath)
 			}
 			if _, err := os.Stat(statPath); err == nil {
 				attachment := m.createAttachmentFromPath(filePath)
@@ -623,7 +623,7 @@ func (m *editorComponent) SetValueWithAttachments(value string) {
 			if end > start {
 				filePath := value[start:end]
 				slog.Debug("test", "filePath", filePath)
-				if _, err := os.Stat(filepath.Join(m.app.Info.Path.Cwd, filePath)); err == nil {
+				if _, err := os.Stat(filepath.Join(util.CwdPath, filePath)); err == nil {
 					slog.Debug("test", "found", true)
 					attachment := m.createAttachmentFromFile(filePath)
 					if attachment != nil {
@@ -818,7 +818,7 @@ func (m *editorComponent) createAttachmentFromFile(filePath string) *attachment.
 	mediaType := getMediaTypeFromExtension(ext)
 	absolutePath := filePath
 	if !filepath.IsAbs(filePath) {
-		absolutePath = filepath.Join(m.app.Info.Path.Cwd, filePath)
+		absolutePath = filepath.Join(util.CwdPath, filePath)
 	}
 
 	// For text files, create a simple file reference
@@ -872,7 +872,7 @@ func (m *editorComponent) createAttachmentFromPath(filePath string) *attachment.
 	mediaType := getMediaTypeFromExtension(extension)
 	absolutePath := filePath
 	if !filepath.IsAbs(filePath) {
-		absolutePath = filepath.Join(m.app.Info.Path.Cwd, filePath)
+		absolutePath = filepath.Join(util.CwdPath, filePath)
 	}
 	return &attachment.Attachment{
 		ID:        uuid.NewString(),
diff --git a/packages/tui/internal/components/chat/message.go b/packages/tui/internal/components/chat/message.go
index a19d15fd7..ca1a2a536 100644
--- a/packages/tui/internal/components/chat/message.go
+++ b/packages/tui/internal/components/chat/message.go
@@ -55,6 +55,8 @@ func WithBackgroundColor(color compat.AdaptiveColor) renderingOption {
 func WithNoBorder() renderingOption {
 	return func(c *blockRenderer) {
 		c.border = false
+		c.paddingLeft++
+		c.paddingRight++
 	}
 }
 
@@ -185,7 +187,7 @@ func renderContentBlock(
 			style = style.BorderRightForeground(borderColor)
 		}
 	} else {
-		style = style.PaddingLeft(renderer.paddingLeft + 1).PaddingRight(renderer.paddingRight + 1)
+		style = style.PaddingLeft(renderer.paddingLeft).PaddingRight(renderer.paddingRight)
 	}
 
 	content = style.Render(content)
diff --git a/packages/tui/internal/components/chat/messages.go b/packages/tui/internal/components/chat/messages.go
index b3074bb54..053d538a4 100644
--- a/packages/tui/internal/components/chat/messages.go
+++ b/packages/tui/internal/components/chat/messages.go
@@ -769,6 +769,7 @@ func (m *messagesComponent) renderView() tea.Cmd {
 				context.Background(),
 				m.app.CurrentPermission.SessionID,
 				m.app.CurrentPermission.MessageID,
+				opencode.SessionMessageParams{},
 			)
 			if err != nil || response == nil {
 				slog.Error("Failed to get message from child session", "error", err)
@@ -1238,6 +1239,7 @@ func (m *messagesComponent) RedoLastMessage() (tea.Model, tea.Cmd) {
 			response, err := m.app.Client.Session.Unrevert(
 				context.Background(),
 				m.app.Session.ID,
+				opencode.SessionUnrevertParams{},
 			)
 			if err != nil {
 				slog.Error("Failed to unrevert session", "error", err)
diff --git a/packages/tui/internal/components/status/status.go b/packages/tui/internal/components/status/status.go
index 792637825..9d2059e0e 100644
--- a/packages/tui/internal/components/status/status.go
+++ b/packages/tui/internal/components/status/status.go
@@ -200,7 +200,7 @@ func (m *statusComponent) View() string {
 
 func (m *statusComponent) startGitWatcher() tea.Cmd {
 	cmd := util.CmdHandler(
-		GitBranchUpdatedMsg{Branch: getCurrentGitBranch(m.app.Info.Path.Root)},
+		GitBranchUpdatedMsg{Branch: getCurrentGitBranch(m.app.Project.Worktree)},
 	)
 	if err := m.initWatcher(); err != nil {
 		return cmd
@@ -209,7 +209,7 @@ func (m *statusComponent) startGitWatcher() tea.Cmd {
 }
 
 func (m *statusComponent) initWatcher() error {
-	gitDir := filepath.Join(m.app.Info.Path.Root, ".git")
+	gitDir := filepath.Join(m.app.Project.Worktree, ".git")
 	headFile := filepath.Join(gitDir, "HEAD")
 	if info, err := os.Stat(gitDir); err != nil || !info.IsDir() {
 		return err
@@ -226,7 +226,7 @@ func (m *statusComponent) initWatcher() error {
 	}
 
 	// Also watch the ref file if HEAD points to a ref
-	refFile := getGitRefFile(m.app.Info.Path.Cwd)
+	refFile := getGitRefFile(util.CwdPath)
 	if refFile != headFile && refFile != "" {
 		if _, err := os.Stat(refFile); err == nil {
 			watcher.Add(refFile) // Ignore error, HEAD watching is sufficient
@@ -247,7 +247,7 @@ func (m *statusComponent) watchForGitChanges() tea.Cmd {
 		for {
 			select {
 			case event, ok := <-m.watcher.Events:
-				branch := getCurrentGitBranch(m.app.Info.Path.Root)
+				branch := getCurrentGitBranch(m.app.Project.Worktree)
 				if !ok {
 					return GitBranchUpdatedMsg{Branch: branch}
 				}
@@ -276,8 +276,8 @@ func (m *statusComponent) updateWatchedFiles() {
 	if m.watcher == nil {
 		return
 	}
-	refFile := getGitRefFile(m.app.Info.Path.Root)
-	headFile := filepath.Join(m.app.Info.Path.Root, ".git", "HEAD")
+	refFile := getGitRefFile(m.app.Project.Worktree)
+	headFile := filepath.Join(m.app.Project.Worktree, ".git", "HEAD")
 	if refFile != headFile && refFile != "" {
 		if _, err := os.Stat(refFile); err == nil {
 			// Try to add the new ref file (ignore error if already watching)
@@ -330,7 +330,7 @@ func NewStatusCmp(app *app.App) StatusComponent {
 	}
 
 	homePath, err := os.UserHomeDir()
-	cwdPath := app.Info.Path.Cwd
+	cwdPath := util.CwdPath
 	if err == nil && homePath != "" && strings.HasPrefix(cwdPath, homePath) {
 		cwdPath = "~" + cwdPath[len(homePath):]
 	}