feat: eager vLLM warmup and smart page titles in paginate stage

- Add warmup() to LlmProvider interface for eager subprocess startup
- ManagedVllmProvider.warmup() starts vLLM in background on project load
- ProviderRegistry.warmupAll() triggers all managed providers
- NamedProvider proxies warmup() to inner provider
- paginate stage generates LLM-powered descriptive page titles when
  available, cached by content hash, falls back to generic "Page N"
- project-mcp-endpoint calls warmupAll() on router creation so vLLM
  is loading while the session initializes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/db/prisma/schema.prisma

@@ -57,6 +57,7 @@ model McpServer {
   name          String          @unique
   description   String          @default("")
   packageName   String?
+  runtime       String?
   dockerImage   String?
   transport     Transport       @default(STDIO)
   repositoryUrl String?
@@ -93,6 +94,7 @@ model McpTemplate {
   version       String    @default("1.0.0")
   description   String    @default("")
   packageName   String?
+  runtime       String?
   dockerImage   String?
   transport     Transport @default(STDIO)
   repositoryUrl String?
@@ -172,10 +174,12 @@ model Project {
   description String   @default("")
   prompt      String   @default("")
   proxyMode   String   @default("direct")
+  proxyModel  String   @default("")
   gated       Boolean  @default(true)
-  llmProvider String?
-  llmModel    String?
-  ownerId     String
+  llmProvider     String?
+  llmModel        String?
+  serverOverrides Json?
+  ownerId         String
   version     Int      @default(1)
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
@@ -271,6 +275,29 @@ model PromptRequest {
   @@index([createdBySession])
 }
 
+// ── Audit Events (pipeline/gate/tool trace from mcplocal) ──
+
+model AuditEvent {
+  id             String   @id @default(cuid())
+  timestamp      DateTime
+  sessionId      String
+  projectName    String
+  eventKind      String
+  source         String
+  verified       Boolean  @default(false)
+  serverName     String?
+  correlationId  String?
+  parentEventId  String?
+  payload        Json
+  createdAt      DateTime @default(now())
+
+  @@index([sessionId])
+  @@index([projectName])
+  @@index([correlationId])
+  @@index([timestamp])
+  @@index([eventKind])
+}
+
 // ── Audit Logs ──
 
 model AuditLog {