docs: streamline nav and page structure

- Separate nav items instead of single include-based page
- Merge description.adoc content into index.adoc
- Remove license.adoc, add inline license to index.adoc
- Change nav label from Start to Overview

Signed-off-by: jimisola <jimisola@jimisola.com>

Author: Jimisola Laursen

docs/modules/ROOT/nav.adoc

@@ -1 +1,3 @@
-* xref:index.adoc[Start]
+* xref:index.adoc[Overview]
+* xref:configuration.adoc[Configuration]
+* xref:usage.adoc[Usage]

docs/modules/ROOT/pages/description.adoc

@@ -1,9 +1,57 @@
 = Reqstool Python Hatch Plugin
 
-include::description.adoc[]
+This Hatch build hook generates annotations and assembles reqstool data during `hatch build`. It collects decorated code using https://github.com/reqstool/reqstool-python-decorators[reqstool-python-decorators] and packages everything for consumption by the reqstool CLI.
 
-include::configuration.adoc[]
+=== Features
 
-include::usage.adoc[]
+* *Hatch integration*: Runs automatically as a build hook during `hatch build`
+* *Combines annotations*: Collects `@Requirements` and `@SVCs` decorators from source and test code
+* *Assembles package data*: Includes requirements, test results, and annotations in the built package
+* *Generates config*: Creates a `reqstool_config.yml` with correct paths for the package structure
 
-include::license.adoc[]
+=== Quick Start
+
+==== Add the Plugin
+
+Add the build hook dependency to your `pyproject.toml`:
+
+[source,toml]
+----
+[tool.hatch.build.hooks.reqstool]
+dependencies = ["reqstool-python-hatch-plugin"]
+----
+
+==== Default Behavior
+
+The plugin automatically:
+
+1. Runs during `hatch build`
+2. Scans source and test directories for `@Requirements` and `@SVCs` decorators
+3. Generates an `annotations.yml` file in `build/reqstool/`
+4. Creates a `reqstool_config.yml` with paths for the package structure
+5. Includes reqstool data in the built package (sdist/wheel)
+
+==== Minimal Setup
+
+[source]
+----
+my-project/
+├── pyproject.toml
+├── docs/
+│   └── reqstool/
+│       └── requirements.yml  (mandatory)
+├── src/
+└── tests/
+----
+
+Run `hatch build` and the annotations will be generated automatically.
+
+=== Prerequisites
+
+* Python 3.10+
+* https://hatch.pypa.io/[Hatch]
+* https://github.com/reqstool/reqstool-python-decorators[reqstool-python-decorators] as a project dependency
+
+== License
+
+MIT License.