feat: support for nested output directory

I find I am manually doing this - makes sense to have it
programatically done.

Signed-off-by: vsoch <vsoch@users.noreply.github.com>

Author: vsoch

examples/servers/flux-gemini.yaml

@@ -3,6 +3,3 @@ tools:
   - path: flux_mcp.validate.flux_validate_batch_jobspec
     name: validate_flux_jobspec
 
-prompts:
-  - path: hpc_mcp.job.validate.validate_jobspec_expert
-  - path: hpc_mcp.job.transform.transform_jobspec_expert

fractale/db/memory.py

@@ -86,20 +86,23 @@ def save(self, data=None, uid=None):
         """
         Save results to json in PWD.
         """
-        os.makedirs(".fractale", exist_ok=True)
-        # Save according to unique identifier or timestamp
         timestamp = datetime.now().strftime("%Y%m%d-%H%M%S")
+        outdir = os.path.join(".fractale", timestamp)
+        os.makedirs(outdir, exist_ok=True)
+        # Save according to unique identifier or timestamp
         uid = uid or timestamp
-        path = os.path.join(".fractale", f"{uid}-events.json")
+        path = os.path.join(outdir, f"{uid}-events.json")
         print(f"💾 Saving results to {path}")
+        # Events saved for orchestration
         results = {"events": self.events}
         if data:
             results["metadata"] = data
         utils.write_json(results, path)
+        # And metrics
         if not self.metrics:
             return
         results = {"metrics": self.metrics}
         if data:
             results["metadata"] = data
-        path = os.path.join(".fractale", f"{uid}-metrics.json")
+        path = os.path.join(outdir, f"{uid}-metrics.json")
         utils.write_json(self.metrics, path)

fractale/version.py

@@ -7,7 +7,6 @@
 DESCRIPTION = "Agentic framework for HPC orchestration"
 LICENSE = "LICENSE"
 
-
 ################################################################################
 # TODO vsoch: refactor this to use newer pyproject stuff.