docs: add subtle GitHub star nudges at OSS win-moments (#5928)

docs/open-source/node-quickstart.mdx

@@ -66,6 +66,8 @@ console.log(results);
 </Step>
 </Steps>
 
+<Snippet file="star-on-github.mdx" />
+
 <Note>
 By default the Node SDK uses local-friendly settings (OpenAI `gpt-5-mini`, `text-embedding-3-small`, in-memory vector store, and SQLite history). Pass a config to swap any of them.
 </Note>

docs/open-source/overview.mdx

@@ -69,3 +69,5 @@ Override any component with [`Memory.from_config`](/open-source/configuration).
 | Bundled providers | `openai`, `anthropic`, `gemini` (switch on the Configuration page) |
 
 See [Self-Hosted Setup](/open-source/setup#supported-providers) for the full provider list and how to extend it.
+
+<Snippet file="star-on-github.mdx" />

docs/open-source/python-quickstart.mdx

@@ -76,6 +76,7 @@ print(results)
 </Step>
 </Steps>
 
+<Snippet file="star-on-github.mdx" />
 
 <Note>
 By default `Memory()` wires up:

docs/open-source/setup.mdx

@@ -120,6 +120,8 @@ On a fresh install the dashboard redirects to `/setup`. Each step submits on Ent
 
 For the underlying endpoints (including `/auth/*`, `/api-keys`, `/requests`, `/entities`), see the [REST API reference](/open-source/features/rest-api).
 
+<Snippet file="star-on-github.mdx" />
+
 ---
 
 ## Supported providers