Add resumable LLM investigation loop with bounded controller execution

src/viano_bug_analysis/analysis/investigation_prompt.py

@@ -0,0 +1,17 @@
+import json
+from importlib.resources import files
+
+from viano_bug_analysis.lifecycle.storage import json_bytes
+
+PROMPT_VERSION="investigation_v1"
+
+
+def output_schema():
+    return json.loads(files("viano_bug_analysis.schemas").joinpath("investigation-output-v1.schema.json").read_text())
+
+
+def build_prompt(context):
+    schema=output_schema()
+    return {"prompt_version":PROMPT_VERSION,"privacy":"configured","output_schema":schema,
+            "messages":[{"role":"system","content":files("viano_bug_analysis.llm.prompts").joinpath(PROMPT_VERSION+".txt").read_text(encoding="utf-8")},
+                        {"role":"user","content":json_bytes({"task":"investigate_hypothesis","input":context,"output_schema":schema}).decode()}]}