Allow per-run Anthropic/OpenAI key entry in UI

app.py

@@ -436,6 +436,17 @@ def build_ui():
                     ],
                     value="Design new (greenfield)"
                 )
+                gr.Markdown("**Optional: provide an API key to override defaults for this run**")
+                anthropic_key_box = gr.Textbox(
+                    label="Anthropic API Key (optional)",
+                    placeholder="sk-ant-...",
+                    type="password",
+                )
+                openai_key_box = gr.Textbox(
+                    label="OpenAI API Key (optional)",
+                    placeholder="sk-...",
+                    type="password",
+                )
                 gns3_project_input = gr.Dropdown(
                     label="GNS3 project (brownfield)",
                     choices=project_choices or ["overgrowth"],
@@ -470,11 +481,21 @@ def build_ui():
                 setup_output = gr.Markdown(label="Deployment Guide")
 
         # Pipeline handler
-        def run_pipeline(user_input, mode_choice, gns3_project, sot_path, simulation_only_flag, read_only_flag):
+        def run_pipeline(user_input, mode_choice, gns3_project, sot_path, simulation_only_flag, read_only_flag, anthropic_key, openai_key):
             """Execute the full automation pipeline"""
             from agent.pipeline_engine import OvergrowthPipeline
             from agent.llm_client import LLMClient
             
+            # Apply per-run API keys (not persisted)
+            if anthropic_key:
+                os.environ["ANTHROPIC_API_KEY"] = anthropic_key.strip()
+                os.environ["ANTHROPIC_MCP_1ST_BDAY"] = anthropic_key.strip()
+                os.environ["OG_LLM_PROVIDER"] = "anthropic"
+            elif openai_key:
+                os.environ["OPENAI_API_KEY"] = openai_key.strip()
+                os.environ["OPENAI_MCP_1ST_BDAY"] = openai_key.strip()
+                os.environ["OG_LLM_PROVIDER"] = "openai"
+
             pipeline = OvergrowthPipeline()
             
             try:
@@ -765,7 +786,16 @@ def build_ui():
         # Event Handlers
         run_pipeline_btn.click(
             fn=run_pipeline,
-            inputs=[pipeline_input, mode_choice, gns3_project_input, sot_path_input, simulation_only, read_only_validation],
+            inputs=[
+                pipeline_input,
+                mode_choice,
+                gns3_project_input,
+                sot_path_input,
+                simulation_only,
+                read_only_validation,
+                anthropic_key_box,
+                openai_key_box,
+            ],
             outputs=[pipeline_status, sot_output, bom_output, setup_output, api_stats, api_activity],
         )