feat: PTY providers use native JSON streaming, not fragile PTY prompt detection

Stream() now uses each CLI's built-in JSON streaming output instead of
trying to detect prompts in rich TUI output:

- Claude Code: --output-format stream-json --verbose (structured events)
- Gemini CLI: --output-format stream-json
- Others: fallback to non-interactive exec + single event emission

Removed the isPTYProvider hack that forced Chat() in the chat handler.
Stream() is now the universal path for all provider types.

Verified both Claude Code and Ollama work through Stream():
- Claude Code: stream-json parsing extracts assistant text events
- Ollama: standard Genkit streaming (unchanged)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: intel352

go.mod

@@ -7,7 +7,7 @@ require (
 	charm.land/bubbletea/v2 v2.0.1
 	charm.land/lipgloss/v2 v2.0.0
 	github.com/GoCodeAlone/workflow v0.3.56
-	github.com/GoCodeAlone/workflow-plugin-agent v0.6.6
+	github.com/GoCodeAlone/workflow-plugin-agent v0.6.7
 	github.com/charmbracelet/glamour v0.10.0
 	github.com/creack/pty v1.1.24
 	github.com/google/generative-ai-go v0.20.1

go.sum

@@ -68,8 +68,8 @@ github.com/GoCodeAlone/modular/modules/scheduler v1.14.0 h1:JSrzo4FB7uGASExv+fCL
 github.com/GoCodeAlone/modular/modules/scheduler v1.14.0/go.mod h1:emkR2AnilabLJZv1rOTDO9eGpRBmZs487H00Lnp9jIc=
 github.com/GoCodeAlone/workflow v0.3.56 h1:jsJmVwCRLz7XOTLQNoyE7POBDW3SmqbG/18VnAzbaEc=
 github.com/GoCodeAlone/workflow v0.3.56/go.mod h1:uATRqpqPubm+g2jJtYoaMTMmjlUaXnLsSdZk5of+jW0=
-github.com/GoCodeAlone/workflow-plugin-agent v0.6.6 h1:8tFF6MvA19uE6mD5fJJI2laFzlKjeoBj5Ssucr2g8nw=
-github.com/GoCodeAlone/workflow-plugin-agent v0.6.6/go.mod h1:gmyX2n87+ebLEmPj3AbFvDRmVHp/RDw1/Db8FvwKGDk=
+github.com/GoCodeAlone/workflow-plugin-agent v0.6.7 h1:As09kXnJIBSqrfegOfYlOoYldnZPrqV7kWVSqEUnb1g=
+github.com/GoCodeAlone/workflow-plugin-agent v0.6.7/go.mod h1:gmyX2n87+ebLEmPj3AbFvDRmVHp/RDw1/Db8FvwKGDk=
 github.com/GoCodeAlone/workflow-plugin-authz v0.2.2 h1:xnaNLQybNv4u/TeC1+pJuwUHbLPZaCOtcWcUn4HVeq4=
 github.com/GoCodeAlone/workflow-plugin-authz v0.2.2/go.mod h1:jyeRNdNl8qCXwTc1lGYPazz97ZjCVrE2OGgqGheBJV0=
 github.com/GoCodeAlone/yaegi v0.17.1 h1:aPAwU29L9cGceRAff02c5pjQcT5KapDB4fWFZK9tElE=

internal/daemon/chat.go

@@ -176,38 +176,6 @@ func (s *Service) handleChat(ctx context.Context, sessionID, userMessage string,
 		debugLog("[chat] session=%s sending %d messages: %s", sessionID, len(messages), string(msgJSON))
 	}
 
-	// PTY CLI providers (claude_code, copilot_cli, etc.) don't support streaming
-	// well — their interactive PTY mode requires complex prompt detection.
-	// Use Chat() (non-interactive) for these and fake-stream the response.
-	isPTYProvider := strings.HasSuffix(prov.Name(), "_code") || strings.HasSuffix(prov.Name(), "_cli")
-	if isPTYProvider {
-		resp, chatErr := prov.Chat(ctx, messages, nil)
-		if chatErr != nil {
-			if isAuthError(chatErr) {
-				return sendAuthError(stream, session.Provider, chatErr.Error())
-			}
-			return sendError(stream, "provider chat: "+chatErr.Error())
-		}
-		// Save user message after successful provider call.
-		if err := s.saveMessage(ctx, sessionID, "user", userMessage, "", ""); err != nil {
-			log.Printf("save user message: %v", err)
-		}
-		// Emit the full response as a single token event.
-		if resp != nil && resp.Content != "" {
-			if err := stream.Send(&pb.ChatEvent{
-				Event: &pb.ChatEvent_Token{Token: &pb.TokenDelta{Content: resp.Content}},
-			}); err != nil {
-				return err
-			}
-			if err := s.saveMessage(ctx, sessionID, "assistant", resp.Content, "", ""); err != nil {
-				log.Printf("save assistant message: %v", err)
-			}
-		}
-		return stream.Send(&pb.ChatEvent{
-			Event: &pb.ChatEvent_Complete{Complete: &pb.SessionComplete{Summary: "done"}},
-		})
-	}
-
 	// Stream from provider (save user message AFTER successful stream start,
 	// so failed requests don't pollute conversation history).
 	eventCh, err := prov.Stream(ctx, messages, nil) // tools will be added in later task