Update DOCUMENT-INDEX for new task directory structure

Added reference to new docs/tasks/ structure:
- docs/tasks/[task-name]/ for task-specific documentation
- docs/standards/task-documentation-standard.md for organization guide
- Clarified tasks.md is now "high-level only"

Keeps DOCUMENT-INDEX current with FFG-STD-002 implementation.

Phase 7 of complete restructure.

Date: February 16, 2026
Updated by: The Chronicler

DOCUMENT-INDEX.md

@@ -1,7 +1,7 @@
 # 📋 DOCUMENT INDEX — Firefrost Operations Manual
 
-**Last Updated:** February 15, 2026  
-**Updated By:** Chronicler the Ninth  
+**Last Updated:** February 16, 2026  
+**Updated By:** The Chronicler (current session)  
 **Purpose:** Master reference optimized for intelligent document retrieval by Claude and self-hosted AI
 
 ---
@@ -33,7 +33,9 @@ Use this section to intelligently retrieve documents based on query context:
 
 ### 📋 Task Planning & Priorities
 **Trigger:** "What should we work on?", project planning, roadmap questions
-- `docs/core/tasks.md` — Current task list (ALWAYS current)
+- `docs/core/tasks.md` — Current task list (ALWAYS current, high-level only)
+- `docs/tasks/[task-name]/` — Task-specific documentation (deployment plans, guides, troubleshooting)
+- `docs/standards/task-documentation-standard.md` — How task docs are organized (FFG-STD-002)
 - `docs/planning/terraria-branding-arc.md` — 12-week branding training plan
 - `docs/planning/design-bible.md` — Visual identity and branding philosophy
 - `docs/planning/subscription-tiers.md` — Subscriber model structure