fix: nav links version-independent, remove dead conceptkernel-python refs

- Nav: removed hardcoded v3.4 links (Docs, Architecture, Get Started)
  that broke when browsing v3.5. Sidebar handles versioned nav correctly.
- Nav: Ontology dropdown with v3.4/v3.5 links
- Contributing: removed non-existent conceptkernel-python repo, added
  coming soon warning for both versions

Author: styk-tv

docs/.vitepress/config.mts

@@ -21,10 +21,13 @@ export default withMermaid(defineConfig({
     siteTitle: 'Concept Kernel',
 
     nav: [
-      { text: 'Docs', link: '/v3.4/introduction' },
-      { text: 'Architecture', link: '/v3.4/architecture' },
-      { text: 'Ontology', link: '/ontology/v3.5/' },
-      { text: 'Get Started', link: '/v3.4/getting-started/quickstart' },
+      {
+        text: 'Ontology',
+        items: [
+          { text: 'v3.4 (stable)', link: '/ontology/v3.4/' },
+          { text: 'v3.5 (alpha-3)', link: '/ontology/v3.5/' },
+        ]
+      },
       {
         text: 'Community',
         items: [

docs/v3.4/contributing.md

@@ -13,17 +13,12 @@ The Concept Kernel Protocol is an open project and we welcome contributions of a
 ## Getting Started
 
 1. Join our [Discord](https://discord.gg/sTbfxV9xyU) and introduce yourself
-2. Browse [open issues](https://github.com/ConceptKernel/conceptkernel-python/issues) on GitHub
-3. Fork the repository and submit a pull request
+2. Browse the [GitHub org](https://github.com/ConceptKernel) for repositories
+3. Read the [ontology files](/ontology/v3.4/) to understand the type system
 
-## Development Setup
-
-```bash
-git clone https://github.com/ConceptKernel/conceptkernel-python.git
-cd conceptkernel-python
-pip install -r requirements.txt
-python -m pytest tests/
-```
+::: warning Python SDK Coming Soon
+The CK.Lib Python package is under active development and not yet published to PyPI. Join Discord for early access.
+:::
 
 ## Code of Conduct
 

docs/v3.5-alpha3/contributing.md

@@ -13,17 +13,12 @@ The Concept Kernel Protocol is an open project and we welcome contributions of a
 ## Getting Started
 
 1. Join our [Discord](https://discord.gg/sTbfxV9xyU) and introduce yourself
-2. Browse [open issues](https://github.com/ConceptKernel/conceptkernel-python/issues) on GitHub
-3. Fork the repository and submit a pull request
+2. Browse the [GitHub org](https://github.com/ConceptKernel) for repositories
+3. Read the [ontology files](/ontology/v3.5/) to understand the type system
 
-## Development Setup
-
-```bash
-git clone https://github.com/ConceptKernel/conceptkernel-python.git
-cd conceptkernel-python
-pip install -r requirements.txt
-python -m pytest tests/
-```
+::: warning Python SDK Coming Soon
+The CK.Lib Python package is under active development and not yet published to PyPI. Join Discord for early access.
+:::
 
 ## Code of Conduct