Include agent prompts when streaming to bridge

Agent Details:
- Added GetPrompt() method to Agent interface
- Implemented in BaseAgent to return Config.Prompt
- Updated orchestrator to include prompt when building AgentParticipant list

Bridge Streaming:
- conversation.started events now include each agent's system prompt
- Provides full agent context to AgentPipe Web for better conversation understanding

Testing:
- Updated MockAgent in orchestrator tests to implement GetPrompt()
- Updated mockAgent in TUI tests to implement GetPrompt()
- All tests passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: kevinelliott

pkg/agent/agent.go

@@ -102,6 +102,8 @@ type Agent interface {
 	HealthCheck(ctx context.Context) error
 	// GetCLIVersion returns the version of the agent's CLI tool
 	GetCLIVersion() string
+	// GetPrompt returns the system prompt for the agent
+	GetPrompt() string
 }
 
 // BaseAgent provides a default implementation of common Agent interface methods.
@@ -159,6 +161,11 @@ func (b *BaseAgent) GetRateLimitBurst() int {
 	return 1 // Default burst size
 }
 
+// GetPrompt returns the system prompt for the agent.
+func (b *BaseAgent) GetPrompt() string {
+	return b.Config.Prompt
+}
+
 // Announce returns the agent's announcement message.
 // If a custom announcement is set, it is returned; otherwise,
 // a default message is generated using the agent's name.

pkg/orchestrator/orchestrator.go

@@ -313,6 +313,7 @@ func (o *Orchestrator) Start(ctx context.Context) error {
 				AgentType:  a.GetType(),
 				Model:      a.GetModel(),
 				Name:       a.GetName(),
+				Prompt:     a.GetPrompt(),
 				CLIVersion: a.GetCLIVersion(),
 			})
 		}

pkg/orchestrator/orchestrator_test.go

@@ -40,6 +40,7 @@ func (m *MockAgent) GetRateLimitBurst() int { return m.rateLimitBurst }
 func (m *MockAgent) IsAvailable() bool      { return m.available }
 func (m *MockAgent) Announce() string       { return m.name + " has joined" }
 func (m *MockAgent) GetCLIVersion() string  { return "1.0.0" }
+func (m *MockAgent) GetPrompt() string      { return "You are a helpful assistant" }
 func (m *MockAgent) Initialize(config agent.AgentConfig) error {
 	m.id = config.ID
 	m.name = config.Name

pkg/tui/tui_test.go

@@ -802,6 +802,7 @@ func (m *mockAgent) GetModel() string                          { return "mock-mo
 func (m *mockAgent) GetRateLimit() float64                     { return 0 }
 func (m *mockAgent) GetRateLimitBurst() int                    { return 0 }
 func (m *mockAgent) GetCLIVersion() string                     { return "1.0.0" }
+func (m *mockAgent) GetPrompt() string                         { return "You are a helpful assistant" }
 func (m *mockAgent) Initialize(config agent.AgentConfig) error { return nil }
 func (m *mockAgent) SendMessage(ctx context.Context, messages []agent.Message) (string, error) {
 	return "mock response", nil