Refactor Nexus One AI product structure and roadmap

- Add Workstation as an additive standalone category, kept out of
  TIER_ORDER so it never enters the Server S/M/L/Max upgrade ladder
- Add Server S/M/L/Max commercial labels for existing starter/basic/pro/max
  tiers (slugs, license format, and APIs unchanged)
- Rename portal UI terminology: Connectors -> MCP & Enterprise Connectors,
  Audit Log -> Governance & Audit, Model Manager -> Model Catalog,
  Agent Builder -> Agent Studio, Workflow Automation -> Workflow Designer,
  Multimodal Chat -> AI Workspace
- Fix branding.js workflow.html tier-gating bug and entry.yml missing tier var
- Document 7-capability platform roadmap and Workstation/Server structure
  in README.md and docs/README.md
- Ignore __pycache__/*.pyc build artifacts

cezen-portal/agents.html

@@ -3,7 +3,7 @@
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
-  <title>Agent Builder — Nexus One AI</title>
+  <title>Agent Studio — Nexus One AI</title>
   <link rel="stylesheet" href="style.css?v=4">
   <style>
     /* ── Layout ── */
@@ -209,12 +209,12 @@
         <span class="nav-drop-cat">MONITOR /</span>
         <a href="dashboard.html">Dashboard</a>
         <a href="analytics.html">Usage Analytics</a>
-        <a href="audit.html">Audit Log</a>
+        <a href="audit.html">Governance & Audit</a>
         <a href="feedback.html">Feedback &amp; Ratings</a>
         <span class="nav-drop-cat">MANAGE /</span>
         <a href="users.html">Users</a>
         <a href="teams.html">Teams</a>
-        <a href="models-admin.html">Model Manager</a>
+        <a href="models-admin.html">Model Catalog</a>
         <a href="training.html">Training</a>
         <a href="knowledge.html">Knowledge Base</a>
         <span class="nav-drop-cat">TOOLS /</span>
@@ -225,7 +225,7 @@
         <a href="guardrails.html">Guardrails</a>
         <a href="rag-quality.html">RAG Quality</a>
         <a href="router.html">Model Router</a>
-        <a href="connectors.html">Connectors</a>
+        <a href="connectors.html">MCP & Enterprise Connectors</a>
         <span class="nav-drop-cat">SYSTEM /</span>
         <a href="console.html">Console</a>
         <a href="settings.html">Settings</a>
@@ -236,13 +236,13 @@
       <div class="nav-drop-menu">
         <span class="nav-drop-cat">INTELLIGENCE /</span>
         <a href="documents.html">Document Intelligence</a>
-        <a href="chat-multi.html">Multimodal Chat</a>
+        <a href="chat-multi.html">AI Workspace</a>
         <a href="prompt-studio.html">Prompt Studio</a>
         <a href="meeting.html">Meeting Assistant</a>
         <span class="nav-drop-cat">AUTOMATION /</span>
-        <a href="agents.html">Agent Builder</a>
+        <a href="agents.html">Agent Studio</a>
         <a href="schedules.html">Scheduled Jobs</a>
-        <a href="workflows.html">Workflow Automation</a>
+        <a href="workflows.html">Workflow Designer</a>
         <span class="nav-drop-cat">QUALITY /</span>
         <a href="evals.html">AI Eval Suite</a>
         <a href="chatrooms.html">Chat Rooms</a>
@@ -273,7 +273,7 @@
     <!-- Empty state -->
     <div class="ab-empty" id="ab-empty">
       <div class="ab-empty-icon">🤖</div>
-      <div class="ab-empty-title">Agent Builder</div>
+      <div class="ab-empty-title">Agent Studio</div>
       <div class="ab-empty-sub">
         Chain prompts and AI steps into automated pipelines. Each step's output feeds the next — build multi-step workflows that run with one click.
       </div>