Add detailed schema property tables to docs

Expand reference docs with explicit Properties / Allowed Values tables for many schemas (AI, conversation, cost, API, automation, data, identity, integration, kernel, system, UI, etc.), including union/option breakdowns and enum lists for message, action, and budget types. Remove several hub reference files under content/docs/references/hub. Update packages/spec/scripts/build-docs.ts to accommodate the documentation changes. These edits improve discoverability of fields and make the API/AI schemas more explicit for consumers.

Author: hotlong

content/docs/references/ai/agent-action.mdx

@@ -23,21 +23,64 @@ const result = AIKnowledge.parse(data);
 
 ## AIKnowledge
 
+### Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **topics** | `string[]` | ✅ | Topics/Tags to recruit knowledge from |
+| **indexes** | `string[]` | ✅ | Vector Store Indexes |
+
 
 ---
 
 ## AIModelConfig
 
+### Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **provider** | `Enum<'openai' \| 'azure_openai' \| 'anthropic' \| 'local'>` | ✅ |  |
+| **model** | `string` | ✅ | Model name (e.g. gpt-4, claude-3-opus) |
+| **temperature** | `number` | ✅ |  |
+| **maxTokens** | `number` | optional |  |
+| **topP** | `number` | optional |  |
+
 
 ---
 
 ## AITool
 
+### Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **type** | `Enum<'action' \| 'flow' \| 'query' \| 'vector_search'>` | ✅ |  |
+| **name** | `string` | ✅ | Reference name (Action Name, Flow Name) |
+| **description** | `string` | optional | Override description for the LLM |
+
 
 ---
 
 ## Agent
 
+### Properties
+
+| Property | Type | Required | Description |
+| :--- | :--- | :--- | :--- |
+| **name** | `string` | ✅ | Agent unique identifier |
+| **label** | `string` | ✅ | Agent display name |
+| **avatar** | `string` | optional |  |
+| **role** | `string` | ✅ | The persona/role (e.g. "Senior Support Engineer") |
+| **instructions** | `string` | ✅ | System Prompt / Prime Directives |
+| **model** | `Object` | optional |  |
+| **lifecycle** | `Object` | optional | State machine defining the agent conversation follow and constraints |
+| **tools** | `Object[]` | optional | Available tools |
+| **knowledge** | `Object` | optional | RAG access |
+| **active** | `boolean` | ✅ |  |
+| **access** | `string[]` | optional | Who can chat with this agent |
+| **tenantId** | `string` | optional | Tenant/Organization ID |
+| **visibility** | `Enum<'global' \| 'organization' \| 'private'>` | ✅ |  |
+
 
 ---