fix: prevent server-side plan execution in final response generation

Two critical fixes for final response generation:

1. Make query_osvm_ai_with_options() public
   - Was private, needed by streaming_agent
   - Allows passing custom system prompts and ownPlan flag

2. Add finalization system prompt with ownPlan: true
   - Creates explicit finalization prompt telling AI:
     * Format results clearly
     * Answer user's question directly
     * DO NOT generate new plans/code
     * DO NOT execute actions
   - Sets ownPlan: true to prevent server from using aiPlanExecution
   - Passes both to query_osvm_ai_with_options()

Problem solved:
❌ Before: Final response used query_with_debug() with no options
   → Server tried to execute with aiPlanExecution
   → Wasted time trying to find tools like 'getSOLTransfers'
✅ After: Uses ownPlan: true + finalization prompt
   → Server just generates text, no execution
   → Fast text-only LLM call

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

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

Author: 0xrinegade

src/services/ai_service.rs

@@ -463,7 +463,7 @@ impl AiService {
         .await
     }
 
-    async fn query_osvm_ai_with_options(
+    pub async fn query_osvm_ai_with_options(
         &self,
         question: &str,
         system_prompt: Option<String>,

src/utils/streaming_agent.rs

@@ -869,7 +869,24 @@ pub async fn execute_streaming_agent(query: &str, verbose: u8) -> Result<()> {
 
         if tool_results_for_ai.is_empty() && tool_plan.osvm_tools_to_use.is_empty() {
             // No tools - direct response
-            match ai_service.query_with_debug(query, verbose > 1).await {
+            let finalization_prompt = format!(
+                "You are finalizing the answer to this user query: \"{}\"\n\n\
+                 The execution has completed. Your task is to:\n\
+                 1. Format the results in a clear, human-readable way\n\
+                 2. Directly answer the user's question based on the data\n\
+                 3. DO NOT generate any new plans or code\n\
+                 4. DO NOT suggest additional steps or actions\n\
+                 5. Just present the final answer clearly and concisely\n\n\
+                 Results to format:\n{:?}",
+                query, tool_results_for_ai
+            );
+
+            match ai_service.query_osvm_ai_with_options(
+                query,
+                Some(finalization_prompt),
+                Some(true), // ownPlan: true - tells server not to execute, just generate text
+                verbose > 1
+            ).await {
                 Ok(resp) => {
                     println!(" ✅");
                     resp