fix(oauth): Remove the option to force_register new clients

docs/oauth-architecture.md

@@ -217,11 +217,12 @@ NEXTCLOUD_HOST=https://nextcloud.example.com
 
 **How it works**:
 1. Server checks `/.well-known/openid-configuration` for `registration_endpoint`
-2. Calls `/apps/oidc/register` to register new client
+2. Calls `/apps/oidc/register` to register a client on first startup
 3. Saves credentials to `.nextcloud_oauth_client.json`
-4. Re-registers if credentials expire
+4. Reuses these credentials on subsequent startups
+5. Re-registers only if credentials are missing or expired
 
-**Best for**: Development, testing, short-lived deployments
+**Best for**: Development, testing, quick deployments
 
 ### Pre-configured Client
 

docs/oauth-setup.md

@@ -165,23 +165,23 @@ You have two options for managing OAuth clients:
 
 ### Mode A: Automatic Registration (Dynamic Client Registration)
 
-**Best for**: Development, testing, short-lived deployments
+**Best for**: Development, testing, quick deployments
 
 **How it works**:
-- MCP server automatically registers OAuth client at startup
+- MCP server automatically registers an OAuth client on first startup
 - Uses Nextcloud's dynamic client registration endpoint
 - Saves credentials to `.nextcloud_oauth_client.json`
+- Reuses stored credentials on subsequent restarts
 - Re-registers automatically if credentials expire
 
 **Pros**:
 - Zero configuration required
 - Quick setup
-- No manual client management
+- Automatic credential management
 
 **Cons**:
 - Clients expire (default: 1 hour, configurable)
-- Must re-register on restart if expired
-- Not ideal for long-running production
+- Must have dynamic client registration enabled on Nextcloud
 
 **Configuration**: Skip to [Step 4](#step-4-configure-mcp-server) with minimal config.
 
@@ -192,8 +192,8 @@ You have two options for managing OAuth clients:
 **Best for**: Production, long-running deployments, stable environments
 
 **How it works**:
-- You manually register OAuth client via Nextcloud CLI
-- Provide client credentials to MCP server
+- You manually register an OAuth client via Nextcloud CLI
+- Provide client credentials to MCP server via environment variables
 - Credentials don't expire
 
 **Pros**:

docs/quickstart-oauth.md

@@ -151,11 +151,11 @@ curl https://your.nextcloud.instance.com/.well-known/openid-configuration
 This quick start uses **automatic client registration** which is perfect for:
 - Development
 - Testing
-- Short-lived deployments
+- Quick deployments
 
-For **production deployments**, you should:
-1. Pre-register OAuth clients manually
-2. Use dedicated client credentials
+For **production deployments**, consider:
+1. Pre-registering OAuth client manually
+2. Using dedicated client credentials that don't expire
 3. See [OAuth Setup Guide](oauth-setup.md) for production configuration
 
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