feat: ACN Application Security Standard V7.30 compliance (19/23 items)

CRITICAL — Authentication & Access:
- TOTP MFA: otpauth-based, QR setup UI, sign-in flow integration,
  admin disable override, /account/security self-service page
- Session Timeouts: 8h absolute (maxAge), 30min idle (updateAge)
- Failed Auth Logging: Pino warn for invalid password/user/totp,
  info for successful login, audit entries for all auth events
- Concurrent Session Limit: ActiveSession model, oldest-kick strategy,
  max 3 per user (configurable in SystemSettings)

CRITICAL — HTTP Security:
- HSTS: max-age=31536000; includeSubDomains
- CSP: script/style/img/font/connect-src with Gemini/OpenAI whitelist
- X-XSS-Protection: 0 (CSP replaces legacy)
- Auth page cache: no-store, no-cache, must-revalidate
- Rate Limiting: 100/15min general API, 5/15min auth (Map-based)

Data Protection:
- XSS Sanitization: DOMPurify on comment bodies
- autocomplete="new-password" on all password/secret fields
- SameSite=Strict on all cookies (Credentials-only, no OAuth)
- File Upload Magic Bytes validation (PNG/JPEG/WebP/GIF/BMP/TIFF)

Logging & Monitoring:
- Login/Logout audit entries (Auth entityType)
- External API call logging with timing (OpenAI, Gemini)
- Input validation failure logging at warn level
- Concurrent session tracking in ActiveSession table

Documentation:
- docs/security-architecture.md (11 sections)
- docs/sdlc.md (CI pipeline, security gates, incident response)
- .gitea/PULL_REQUEST_TEMPLATE.md (security checklist)

Schema: User.totpSecret/totpEnabled, SystemSettings.sessionMaxAge/
sessionIdleTimeout/maxConcurrentSessions, ActiveSession model

Tests: 310 engine + 37 staffing pass. TypeScript clean.

Co-Authored-By: claude-flow <ruv@ruv.net>

packages/api/src/router/assistant.ts

@@ -7,7 +7,7 @@ import { z } from "zod";
 import { TRPCError } from "@trpc/server";
 import { resolvePermissions, type PermissionOverrides, type SystemRole } from "@capakraken/shared";
 import { createTRPCRouter, protectedProcedure } from "../trpc.js";
-import { createAiClient, isAiConfigured, parseAiError } from "../ai-client.js";
+import { createAiClient, isAiConfigured, loggedAiCall, parseAiError } from "../ai-client.js";
 import { TOOL_DEFINITIONS, executeTool, type ToolContext, type ToolAction } from "./assistant-tools.js";
 
 const MAX_TOOL_ITERATIONS = 8;
@@ -167,15 +167,19 @@ export const assistantRouter = createTRPCRouter({
       for (let i = 0; i < MAX_TOOL_ITERATIONS; i++) {
         // eslint-disable-next-line @typescript-eslint/no-explicit-any
         let response: any;
+        const provider = settings!.aiProvider ?? "openai";
+        const msgLen = openaiMessages.reduce((n, m) => n + (typeof m.content === "string" ? m.content.length : 0), 0);
         try {
-          response = await client.chat.completions.create({
-            model,
-            messages: openaiMessages,
-            // eslint-disable-next-line @typescript-eslint/no-explicit-any
-            tools: availableTools as any,
-            max_completion_tokens: maxTokens,
-            temperature,
-          });
+          response = await loggedAiCall(provider, model, msgLen, () =>
+            client.chat.completions.create({
+              model,
+              messages: openaiMessages,
+              // eslint-disable-next-line @typescript-eslint/no-explicit-any
+              tools: availableTools as any,
+              max_completion_tokens: maxTokens,
+              temperature,
+            }),
+          );
         } catch (err) {
           throw new TRPCError({
             code: "INTERNAL_SERVER_ERROR",