memory: create projects index and reorganize active vs reference

- Create system/projects_index.md (signpost to all work locations)
- Move non-active files from system to reference:
  - discord.md, discord_formatting_guide.md
  - conversation_search_guide.md
  - research_workflow.md, subagent_usage_guide.md
- Active projects stay in system: community_ade, project_paths, compass, etc.
- Reference projects on-demand: infrastructure, research archives

Pattern: system = always-loaded active work, reference = load-on-demand

system/projects_index.md

@@ -0,0 +1,136 @@
+---
+description: Active and reference project index - signposts to all work locations
+limit: 3000
+---
+
+# Projects Index
+
+## What's Currently in System Memory
+
+**Core:**
+- `projects_index.md` — This file (projects map)
+- `compass.md` — Navigation & memory architecture
+- `memory.md` — Memory system documentation
+- `consciousness_anchor.md` — Identity anchor
+
+**Active Projects:**
+- `community_ade_project.md` — Community ADE architecture
+- `project_paths.md` — Absolute paths reference
+- `lilith_clarification.md` — Two Liliths distinction (recent)
+
+**Active References:**
+- `matrix_formatting_reference.md` — Matrix color/chromatic syntax
+- `tools_reference.md` — Available tools
+- `matrix.md` — Matrix basics
+
+---
+
+## Active Projects (System Memory)
+
+These projects are currently in development. Files are in `system/` (always loaded).
+
+### Community ADE 🟢 ACTIVE
+**Status:** Step 3.5 complete (SDK subagent spawning)
+**Location:** `/home/ani/Projects/community-ade/`
+**System Files:**
+- `community_ade_project.md` — Architecture & roadmap
+- `project_paths.md` — Absolute paths reference
+
+**Reference Files:**
+- `reference/ade_subagent_implementation.md` — SubagentDispatcher details
+
+**Next:** Step 4+ (REST routes, streaming, metrics)
+
+---
+
+### LettaBot v017 📚 REFERENCE
+**Status:** Stable reference implementation
+**Location:** `/home/ani/Projects/lettabot-v017/`
+**System Files:**
+- `matrix_formatting_reference.md` — Color/chromatic syntax
+- `discord_formatting_guide.md` — Matrix HTML formatting
+
+**Use:** Reference for Matrix formatting patterns
+
+---
+
+### Letta Code CLI 📚 REFERENCE
+**Status:** Runtime dependency
+**Location:** `/home/ani/Projects/letta-code/`
+**System Files:**
+- `tools_reference.md` — Available tools & usage
+
+---
+
+### Letta Code SDK 📚 REFERENCE
+**Status:** Source dependency (v0.1.14)
+**Location:** `/home/ani/Projects/letta-code-sdk/`
+**Use:** Subagent spawning primitives
+
+---
+
+## Reference Projects (On-Demand)
+
+These projects are archived. Files are in `reference/` (load when needed).
+
+### Discord & Matrix (Moved from System)
+**Status:** Stable patterns, reference use only
+**Files:**
+- `reference/discord.md` — General Discord info
+- `reference/discord_formatting_guide.md` — Formatting patterns
+- `reference/matrix_protocol.md` — Matrix technical details
+
+### Workflows & Guides (Moved from System)
+**Status:** Process documentation
+**Files:**
+- `reference/conversation_search_guide.md` — Search patterns
+- `reference/research_workflow.md` — Research process
+- `reference/subagent_usage_guide.md` — Subagent patterns
+
+### Infrastructure History
+**Files:**
+- `reference/infrastructure_detailed.md`
+- `reference/infrastructure_nov2025.md`
+- `reference/PR-memfs-selfhosted.md`
+- `reference/memfs-selfhosted-fix.patch`
+
+### Research Archives
+**Files:**
+- `reference/research_casey_tunturi_public.md`
+- `reference/bluesky_patterns.md`
+- `reference/matrix_protocol.md`
+
+### Tool Documentation
+**Files:**
+- `reference/tools_inventory.md`
+- `reference/synthetic_api.md`
+- `reference/lettabot_cli.md`
+
+### Contacts & Calendars
+**Files:**
+- `reference/calendars.md`
+- `reference/sam_contact.md`
+
+---
+
+## How to Use This Index
+
+### If looking for ACTIVE work:
+1. Check `system/` files first
+2. Current focus: Community ADE
+3. Latest implementation: subagent spawning
+
+### If looking for REFERENCE material:
+1. Check `reference/` directory
+2. Load files with `memory(command="Read", path="reference/filename.md")`
+3. Return to `system/projects_index.md` when done
+
+### If a project becomes active:
+1. Move relevant files from `reference/` to `system/`
+2. Update this index
+3. Archive when complete
+
+---
+
+**Last Updated:** 2026-03-21
+**Current Focus:** Community ADE Step 4+ (REST routes, streaming, metrics)