diff --git a/docs/hetzner-vps.md b/kb/nodes/hetzner-vps.md
similarity index 94%
rename from docs/hetzner-vps.md
rename to kb/nodes/hetzner-vps.md
index a7e2a2b..e41efc1 100644
--- a/docs/hetzner-vps.md
+++ b/kb/nodes/hetzner-vps.md
@@ -1,3 +1,13 @@
+---
+okf: "0.1"
+type: node
+visibility: private
+status: deprecated
+updated: 2026-04-15
+links: []
+superseded_by: "kb/nodes/vps.md + kb/subsystems/fleet-inventory.md (stub z 2026-04-15, sprzed floty)"
+---
+
 # Hetzner VPS
 
 ## Description
diff --git a/docs/hardware.md b/kb/nodes/legacy-hardware.md
similarity index 75%
rename from docs/hardware.md
rename to kb/nodes/legacy-hardware.md
index c4f41b1..f5b2b12 100644
--- a/docs/hardware.md
+++ b/kb/nodes/legacy-hardware.md
@@ -1,3 +1,13 @@
+---
+okf: "0.1"
+type: node
+visibility: private
+status: deprecated
+updated: 2026-04-15
+links: []
+superseded_by: "hosts/<node>/capabilities.yaml + kb/subsystems/fleet-inventory.md"
+---
+
 # Hardware
 
 ## Description
diff --git a/hosts/piha/README.md b/kb/nodes/piha.md
similarity index 73%
rename from hosts/piha/README.md
rename to kb/nodes/piha.md
index a68512c..cc28393 100644
--- a/hosts/piha/README.md
+++ b/kb/nodes/piha.md
@@ -1,3 +1,12 @@
+---
+okf: "0.1"
+type: node
+visibility: private
+status: active
+updated: 2026-05-07
+links: []
+---
+
 # PIHA - Infrastructure + Automation Node
 
 ## Role
diff --git a/hosts/saturn/README.md b/kb/nodes/saturn.md
similarity index 80%
rename from hosts/saturn/README.md
rename to kb/nodes/saturn.md
index b5f0e9e..e5cf38d 100644
--- a/hosts/saturn/README.md
+++ b/kb/nodes/saturn.md
@@ -1,3 +1,12 @@
+---
+okf: "0.1"
+type: node
+visibility: private
+status: active
+updated: 2026-05-07
+links: []
+---
+
 # SATURN - Primary Development & Orchestration Node
 
 ## Role
diff --git a/hosts/solaria/README.md b/kb/nodes/solaria.md
similarity index 69%
rename from hosts/solaria/README.md
rename to kb/nodes/solaria.md
index d1a3dba..4ff9191 100644
--- a/hosts/solaria/README.md
+++ b/kb/nodes/solaria.md
@@ -1,3 +1,12 @@
+---
+okf: "0.1"
+type: node
+visibility: private
+status: active
+updated: 2026-07-16
+links: []
+---
+
 # SOLARIA - Compute / GPU / Inference Node
 
 ## Role
diff --git a/hosts/vps/README.md b/kb/nodes/vps.md
similarity index 73%
rename from hosts/vps/README.md
rename to kb/nodes/vps.md
index ba2949c..41e69ec 100644
--- a/hosts/vps/README.md
+++ b/kb/nodes/vps.md
@@ -1,3 +1,12 @@
+---
+okf: "0.1"
+type: node
+visibility: private
+status: active
+updated: 2026-05-07
+links: []
+---
+
 # VPS - Public Edge + Ingress Node
 
 ## Role