docs: edit structure of observability features

pages/docs/observability/features/_meta.tsx

@@ -1,23 +1,30 @@
 import { MenuSubSeparator } from "@/components/MenuSubSeparator";
 
 export default {
-  "-- Core": {
+  "-- Essential": {
     type: "separator",
     title: <MenuSubSeparator>Essential</MenuSubSeparator>,
   },
+  observations: {},
+  traces: {},
   sessions: {},
+
+  "-- Attributes": {
+    type: "separator",
+    title: <MenuSubSeparator>Attributes</MenuSubSeparator>,
+  },
   users: {},
-  environments: {},
-  tags: {},
   metadata: {},
-  "trace-ids-and-distributed-tracing": {},
+  tags: {},
+  environments: {},
+  "log-levels": {},
+  "releases-and-versioning": {},
 
   "-- Advanced": {
     type: "separator",
     title: <MenuSubSeparator>Advanced</MenuSubSeparator>,
   },
   "user-feedback": {},
-  "log-levels": {},
   "*": {
     layout: "default",
   },

pages/docs/observability/features/environments.mdx

@@ -15,24 +15,6 @@ You can configure the environment by setting the `LANGFUSE_TRACING_ENVIRONMENT`
 If both are specified, the initialization parameter takes precedence.
 If nothing is specified, the default environment is `default`.
 
-## Data Model
-
-The `environment` attribute is available on all events in Langfuse:
-
-- Traces
-- Observations (spans, events, generations)
-- Scores
-- Sessions
-
-See [Data Model](/docs/tracing-data-model) for more details.
-
-The environment must be a string that follows this regex pattern: `^(?!langfuse)[a-z0-9-_]+$` with at most 40 characters.
-
-This means:
-
-- Cannot start with "langfuse"
-- Can only contain lowercase letters, numbers, hyphens, and underscores
-
 ## Usage
 
 <LangTabs items={["Python SDK", "JS/TS SDK", "OpenTelemetry", "OpenAI (Python)", "OpenAI (JS/TS)", "Langchain (Python)", "Langchain (JS/TS)", "Vercel AI SDK (JS/TS)"]}>
@@ -218,6 +200,24 @@ For guidance on how to structure, separate, and work with multiple environments
 2. **Environment-Specific Analysis**: Use environments to analyze and compare metrics across different deployment stages.
 3. **Testing**: Use separate environments for testing to avoid polluting production data.
 
+## Data Model
+
+The `environment` attribute is available on all events in Langfuse:
+
+- Traces
+- Observations (spans, events, generations)
+- Scores
+- Sessions
+
+See [Data Model](/docs/tracing-data-model) for more details.
+
+The environment must be a string that follows this regex pattern: `^(?!langfuse)[a-z0-9-_]+$` with at most 40 characters.
+
+This means:
+
+- Cannot start with "langfuse"
+- Can only contain lowercase letters, numbers, hyphens, and underscores
+
 ## GitHub Discussions
 
 import { GhDiscussionsPreview } from "@/components/gh-discussions/GhDiscussionsPreview";