[docs] Tidy world API docs and document new stream helpers (#1581)

Author: VaguelySerious

docs/content/docs/api-reference/workflow-api/get-world.mdx

@@ -39,23 +39,17 @@ showSections={["returns"]}
 The World object provides access to several entity interfaces. See the [World SDK](/docs/api-reference/workflow-api/world) reference for complete documentation:
 
 <Cards>
-    <Card href="/docs/api-reference/workflow-api/world/runs" title="world.runs">
-        List, filter, and inspect workflow runs.
+    <Card href="/docs/api-reference/workflow-api/world/storage" title="Storage">
+        Query runs, steps, hooks, and the underlying event log.
     </Card>
-    <Card href="/docs/api-reference/workflow-api/world/steps" title="world.steps">
-        List and inspect step execution data.
-    </Card>
-    <Card href="/docs/api-reference/workflow-api/world/hooks" title="world.hooks">
-        Look up hooks by ID or token.
-    </Card>
-    <Card href="/docs/api-reference/workflow-api/world/events" title="world.events">
-        Query the append-only event log.
-    </Card>
-    <Card href="/docs/api-reference/workflow-api/world/streams" title="world.streams">
+    <Card href="/docs/api-reference/workflow-api/world/streams" title="Streams">
         Read, write, and manage data streams.
     </Card>
-    <Card href="/docs/api-reference/workflow-api/world/queue" title="world.queue">
-        Enqueue runs and create queue handlers.
+    <Card href="/docs/api-reference/workflow-api/world/queue" title="Queue">
+        Low-level queue dispatch (internal SDK infrastructure).
+    </Card>
+    <Card href="/docs/api-reference/workflow-api/world/observability" title="Observability">
+        Hydrate step I/O, parse display names, decrypt data.
     </Card>
 </Cards>