docs: refresh cloud persistence wording

Author: steipete

docs/install/exe-dev.md

@@ -50,7 +50,9 @@ Then connect:
 ssh <vm-name>.exe.xyz
 ```
 
-Tip: keep this VM **stateful**. OpenClaw stores state under `~/.openclaw/` and `~/.openclaw/workspace/`.
+Tip: keep this VM **stateful**. OpenClaw stores `openclaw.json`, per-agent
+`auth-profiles.json`, sessions, and channel/provider state under
+`~/.openclaw/`, plus the workspace under `~/.openclaw/workspace/`.
 
 ## 2) Install prerequisites (on the VM)
 

docs/install/northflank.mdx

@@ -23,7 +23,9 @@ This is the easiest "no terminal on the server" path: Northflank runs the Gatewa
 ## What you get
 
 - Hosted OpenClaw Gateway + Control UI
-- Persistent storage via Northflank Volume (`/data`) so config/credentials/workspace survive redeploys
+- Persistent storage via Northflank Volume (`/data`) so `openclaw.json`,
+  per-agent `auth-profiles.json`, channel/provider state, sessions, and
+  workspace survive redeploys
 
 ## Connect a channel
 

docs/install/railway.mdx

@@ -37,7 +37,9 @@ Then open:
 ## What you get
 
 - Hosted OpenClaw Gateway + Control UI
-- Persistent storage via Railway Volume (`/data`) so config/credentials/workspace survive redeploys
+- Persistent storage via Railway Volume (`/data`) so `openclaw.json`,
+  per-agent `auth-profiles.json`, channel/provider state, sessions, and
+  workspace survive redeploys
 
 ## Required Railway settings