docs(web): migrate language-spec,lang-version,value-pointer-equality

Change-Id: I2008d4d5d92dc02f3955828ba93f748282948f07
Reviewed-on: https://cl.snix.dev/c/snix/+/30447
Autosubmit: Florian Klink <flokli@flokli.de>
Reviewed-by: Vova Kryachko <v.kryachko@gmail.com>
Tested-by: besadii

snix/docs/src/SUMMARY.md

@@ -21,8 +21,3 @@
 - [Store API](./store/api.md)
 - [BlobStore Chunking](./castore/blobstore-chunking.md)
 - [BlobStore Protocol](./castore/blobstore-protocol.md)
-
-# Nix
-- [Specification of the Nix Language](./language-spec.md)
-- [Nix language version history](./lang-version.md)
-- [Value Pointer Equality](./value-pointer-equality.md)

web/content/docs/reference/nix-language/_index.md

@@ -0,0 +1,11 @@
+---
+title: Nix Language
+slug: nix-language
+description: ""
+summary: ""
+date: 2025-05-01T13:10:37+02:00
+lastmod: 2025-05-01T13:10:37+02:00
+draft: false
+weight: 50
+toc: true
+---

web/content/docs/reference/nix-language/lang-version.md

@@ -1,4 +1,14 @@
-# Nix language version history
+---
+title: Version history
+slug: lang-version
+description: ""
+summary: ""
+date: 2025-05-01T13:10:37+02:00
+lastmod: 2025-05-01T13:10:37+02:00
+draft: false
+weight: 50
+toc: false
+---
 
 The Nix language (“Nix”) has its own versioning mechanism independent from its
 most popular implementation (“C++ Nix”): `builtins.langVersion`. It has been

web/content/docs/reference/nix-language/language-spec.md

@@ -1,10 +1,20 @@
-# Specification of the Nix Language
+---
+title: Specification of the Nix Language
+slug: language-spec
+description: ""
+summary: ""
+date: 2025-05-01T13:10:37+02:00
+lastmod: 2025-05-01T13:10:37+02:00
+draft: false
+weight: 50
+toc: false
+---
 
-```admonish attention
+{{< callout context="caution" title="Caution" icon="outline/alert-triangle" >}}
 This document is a work in progress. Please keep an eye on
-[`topic:nix-spec`](https://cl.tvl.fyi/q/topic:nix-spec) for ongoing
+[`topic:nix-spec`](https://cl.snix.dev/q/topic:nix-spec) for ongoing
 CLs.
-```
+{{</callout>}}
 
 Nix is a general-purpose, functional programming language which this
 document aims to describe.

web/content/docs/reference/nix-language/value-pointer-equality.md

@@ -1,4 +1,14 @@
-# Value Pointer Equality in Nix
+---
+title: Value Pointer Equality
+slug: value-pointer-equality
+description: ""
+summary: ""
+date: 2025-05-01T13:10:37+02:00
+lastmod: 2025-05-01T13:10:37+02:00
+draft: false
+weight: 55
+toc: false
+---
 
 ## Introduction
 
@@ -47,10 +57,10 @@ works in C++ Nix, the only production ready Nix implementation currently availab
 
 ## Nix (Pointer) Equality in C++ Nix
 
-```admonish info
+{{< callout context="note" title="Note" icon="outline/info-circle" >}}
 The summary presented here is up-to-date as of 2023-06-27 and was tested with
 Nix 2.3, 2.11 and 2.15.
-```
+{{</callout>}}
 
 ### `EvalState::eqValues` and `ExprOpEq::eval`