fix: align API version surfaces with package metadata

API.md

@@ -229,7 +229,7 @@ API health check.
 {
   "status": "ok",
   "service": "vector-graph-memory-api",
-  "version": "1.0.0"
+  "version": "0.1.0"
 }
 ```
 
@@ -295,7 +295,6 @@ The API server:
 ## Known Gaps
 
 - MongoDB audit logging is intended but not fully wired into API startup configuration.
-- The API reports `1.0.0` in FastAPI metadata and the health endpoint, while package metadata remains `0.1.0`.
 - `start_api.sh` requires `OPENAI_API_KEY` to be exported in the current shell and does not source `.env`.
 - JanusGraph schema initialization is manual for local library and local API development.
 - Session-scoped audit history does not currently apply the documented `limit` parameter.

playground_api.ipynb

@@ -90,7 +90,7 @@
      "text": [
       "✓ Connected to Vector Graph Memory API\n",
       "  Service: vector-graph-memory-api\n",
-      "  Version: 1.0.0\n"
+      "  Version: 0.1.0\n"
      ]
     }
    ],

src/vgm/api/server.py

@@ -12,6 +12,7 @@
 from pydantic_ai.embeddings.openai import OpenAIEmbeddingModel
 from dotenv import load_dotenv
 
+from .. import __version__ as PACKAGE_VERSION
 from ..MemoryAgent import MemoryAgent
 from ..config import MemoryConfig, MemoryTriggerConfig, AuditConfig
 
@@ -213,7 +214,7 @@ async def lifespan(_app: FastAPI):
 app = FastAPI(
     title="Vector Graph Memory API",
     description="OpenAI-compatible API with persistent vector-graph memory",
-    version="1.0.0",
+    version=PACKAGE_VERSION,
     lifespan=lifespan,
 )
 
@@ -227,7 +228,7 @@ async def root():
     return {
         "status": "ok",
         "service": "vector-graph-memory-api",
-        "version": "1.0.0",
+        "version": PACKAGE_VERSION,
     }