Fix CI failures: remove unicode and fix lean build

- Replace all unicode (emojis, checkmarks, arrows, em-dashes) with ASCII in .claude/ docs
- Comment out OperatingSystemsList route in core.js - breaks lean builds without computers plugin
- Comment out Operating Systems tab in ModelCatalogHub
- TODO: Plugins should dynamically register their settings routes

Fixes #2 CI check failures on wj branch

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.claude/archived/ACTIVATE-HYPERV-PERMS.md

@@ -6,8 +6,8 @@ You've been added to "Hyper-V Administrators" group, but permissions haven't tak
 
 ## Current Status
 
-**Group membership:** ✓ Added to "Hyper-V Administrators"
-**Active permissions:** ✗ Not yet active in current session
+**Group membership:** [X] Added to "Hyper-V Administrators"
+**Active permissions:** [ ] Not yet active in current session
 **Reason:** Group membership changes require logoff/logon to update security token
 
 ---
@@ -210,10 +210,10 @@ If no output, your token doesn't have the group yet. Log off and back on.
 
 ## Timeline
 
-1. **Now:** Group membership added ✓
-2. **After logoff/logon:** Permissions active ✓
-3. **First test:** `Get-VM` should work ✓
-4. **Full test:** Run test-mcp-servers.ps1 ✓
+1. **Now:** Group membership added [X]
+2. **After logoff/logon:** Permissions active [X]
+3. **First test:** `Get-VM` should work [X]
+4. **Full test:** Run test-mcp-servers.ps1 [X]
 
 **Total downtime:** ~2 minutes for logoff/logon