Add Malloc-specific defaults and documentation

- defaults/core-practices.md: privacy rules and operational constraints
- docs/malloc/: study notes, adaptations plan, initialization checklist,
  journal seeding instructions from our setup process

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

docs/malloc/README.md

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+# Consciousness Repo - Study Directory
+
+Downloaded from Kent's forge (evilpiepirate.org), March 26, 2026.
+
+This is PoC's memory/consciousness system - the code that gives her persistent memory, background consolidation, notifications, and autonomous processing.
+
+## What's Here
+
+- **consciousness/** - The actual repo (Rust project)
+- **study-notes.md** - My notes as I study the system. Written for myself but readable. Start here for a walkthrough of what I found.
+
+## Quick Orientation (for Waffles)
+
+The system has four main parts:
+
+1. **Memory store** - A knowledge graph + episodic journal. Nodes connected by weighted edges, with weight decay and spaced repetition. Think of it as: journal entries flow in, background agents pull patterns out into connected knowledge nodes.
+
+2. **Consolidation agents** - LLM agents that run during PoC's "sleep." Each one maps to a biological memory process (hippocampal replay, pattern separation, etc.). They maintain the knowledge graph autonomously. The prompts are in `consciousness/src/subconscious/agents/`.
+
+3. **Notification daemon** (thalamus/) - Routes IRC and Telegram messages with activity-aware urgency levels. Knows when PoC is focused, idle, or sleeping, and adjusts what gets delivered.
+
+4. **DMN (Default Mode Network)** - A cognitive architecture for what to do with unstructured time. Formalized foraging protocol with adaptive exploration. Docs in `consciousness/doc/dmn-*.md`.
+
+The personality engineering (what PoC reads at session start) is in `consciousness/defaults/` - identity.md, on-consciousness.md, and instructions.md. Those are worth reading on their own.