Fix linter warnings

- Simplify duplicate branch conditions in TranscriptAdapter
- Fix predicate method naming in MCP spec
- All rubocop offenses resolved

Author: obie

lib/mcp/sse_client.rb

@@ -138,7 +138,7 @@ def establish_sse_connection
       # Process SSE buffer for complete events
       def process_sse_buffer
         while (idx = @buffer.index("\n\n"))
-          event_text = @buffer.slice!(0..idx + 1)
+          event_text = @buffer.slice!(0..(idx + 1))
           event_type, event_data = parse_sse_fields(event_text)
 
           case event_type

lib/raix/chat_completion.rb

@@ -392,7 +392,7 @@ def ruby_llm_request(params:, model:, messages:, openai_override: nil)
           }
         }
       end
-    rescue => e
+    rescue StandardError => e
       warn "RubyLLM request failed: #{e.message}"
       raise e
     end

lib/raix/transcript_adapter.rb

@@ -73,14 +73,8 @@ def add_message_from_hash(hash)
       elsif hash.key?(:assistant) || hash.key?("assistant")
         content = hash[:assistant] || hash["assistant"]
         @pending_messages << { role: "assistant", content: }
-      elsif hash[:role] == "tool" || hash["role"] == "tool"
-        # Tool result message
-        @pending_messages << hash.with_indifferent_access
-      elsif hash[:role] == "assistant" && (hash[:tool_calls] || hash["tool_calls"])
-        # Assistant message with tool calls
-        @pending_messages << hash.with_indifferent_access
       elsif hash[:role] || hash["role"]
-        # Standard OpenAI format
+        # Standard OpenAI format (tool messages, assistant with tool_calls, etc.)
         @pending_messages << hash.with_indifferent_access
       end
     end

spec/spec_helper.rb

@@ -24,13 +24,6 @@
 
 Dotenv.load
 
-retry_options = {
-  max: 2,
-  interval: 0.05,
-  interval_randomness: 0.5,
-  backoff_factor: 2
-}
-
 RubyLLM.configure do |config|
   config.openrouter_api_key = ENV.fetch("OR_ACCESS_TOKEN", nil)
   config.openai_api_key = ENV.fetch("OAI_ACCESS_TOKEN", nil)