Fix: Correct the trace path in examples (#395)

### What changed?
The trace URL was using the wrong path format:
- Old: `/traces/{trace_id}`
- Fixed: `/traces/trace?trace_id={trace_id}`

<img width="781" alt="Screenshot 2025-03-30 at 5 54 11 pm"
src="https://github.com/user-attachments/assets/982fbb1d-7163-4438-b237-493e3100b5c7"
/>

examples/financial_research_agent/manager.py

@@ -38,7 +38,7 @@ class FinancialResearchManager:
         with trace("Financial research trace", trace_id=trace_id):
             self.printer.update_item(
                 "trace_id",
-                f"View trace: https://platform.openai.com/traces/{trace_id}",
+                f"View trace: https://platform.openai.com/traces/trace?trace_id={trace_id}",
                 is_done=True,
                 hide_checkmark=True,
             )

examples/mcp/filesystem_example/main.py

@@ -45,7 +45,7 @@ async def main():
     ) as server:
         trace_id = gen_trace_id()
         with trace(workflow_name="MCP Filesystem Example", trace_id=trace_id):
-            print(f"View trace: https://platform.openai.com/traces/{trace_id}\n")
+            print(f"View trace: https://platform.openai.com/traces/trace?trace_id={trace_id}\n")
             await run(server)
 
 

examples/mcp/sse_example/main.py

@@ -46,7 +46,7 @@ async def main():
     ) as server:
         trace_id = gen_trace_id()
         with trace(workflow_name="SSE Example", trace_id=trace_id):
-            print(f"View trace: https://platform.openai.com/traces/{trace_id}\n")
+            print(f"View trace: https://platform.openai.com/traces/trace?trace_id={trace_id}\n")
             await run(server)
 
 

examples/research_bot/manager.py

@@ -23,7 +23,7 @@ class ResearchManager:
         with trace("Research trace", trace_id=trace_id):
             self.printer.update_item(
                 "trace_id",
-                f"View trace: https://platform.openai.com/traces/{trace_id}",
+                f"View trace: https://platform.openai.com/traces/trace?trace_id={trace_id}",
                 is_done=True,
                 hide_checkmark=True,
             )

examples/research_bot/sample_outputs/product_recs.txt

@@ -3,7 +3,7 @@
 $ uv run python -m examples.research_bot.main
 
 What would you like to research? Best surfboards for beginners. I can catch my own waves, but previously used an 11ft board. What should I look for, what are my options? Various budget ranges.
-View trace: https://platform.openai.com/traces/trace_...
+View trace: https://platform.openai.com/traces/trace?trace_id=trace_...
 Starting research...
 ✅ Will perform 15 searches
 ✅ Searching... 15/15 completed

examples/research_bot/sample_outputs/vacation.txt

@@ -2,7 +2,7 @@
 
 $ uv run python -m examples.research_bot.main
 What would you like to research? Caribbean vacation spots in April, optimizing for surfing, hiking and water sports
-View trace: https://platform.openai.com/traces/trace_....
+View trace: https://platform.openai.com/traces/trace?trace_id=trace_....
 Starting research...
 ✅ Will perform 15 searches
 ✅ Searching... 15/15 completed