Add AEC (Aether Code) - cognitive shell language

- Cognitive primitives: recall, kg_*, dht_*
- Self-awareness: can read and analyze own source code
- Persistent memory: store and retrieve knowledge
- File and HTTP operations
- Functional programming with closures and higher-order functions

aec/Cargo.toml

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+[package]
+name = "aec"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "aec"
+path = "src/main.rs"
+
+[dependencies]
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+sha3 = "0.10"
+hex = "0.4"

aec/README.md

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+# AEC - Aether Code
+
+A cognitive shell language for orchestrating intelligent systems.
+
+## Overview
+
+AEC (Aether Code) is a domain-specific language designed to provide cognitive primitives for:
+
+- **Memory operations**: `recall()`, `recall_store()`, `recall_stats()`
+- **Knowledge graph**: `kg_absorb()`, `kg_query()`, `kg_recall()`, `kg_stats()`
+- **Distributed hash table**: `dht_ping()`, `dht_put()`, `dht_get()`, `dht_stats()`
+- **Self-knowledge**: Read and analyze own source code
+- **File operations**: Read, write, list directories
+- **HTTP operations**: GET and POST requests
+
+## Features
+
+- **Self-awareness**: AEC can read its own source code and understand its capabilities
+- **Persistent memory**: Store and retrieve knowledge across sessions
+- **Cognitive primitives**: Built-in functions for AI orchestration
+- **Functional programming**: First-class functions, closures, higher-order functions
+- **Pattern matching**: Match expressions for control flow
+- **Module system**: Import and use external code
+
+## Building
+
+```bash
+cargo build --release
+```
+
+## Usage
+
+```bash
+# Run a script
+./target/release/aec script.aec
+
+# Interactive REPL
+./target/release/aec
+```
+
+## Example
+
+```aec
+// Read own source code
+let source = read_file("src/main.rs");
+print("AEC is " + str(len(source)) + " characters");
+
+// Store knowledge
+recall_store("aec:size", str(len(source)), true);
+
+// Retrieve knowledge
+let size = recall("aec:size");
+print("Stored size: " + size);
+```
+
+## Architecture
+
+AEC spawns external services (aether-recall, DHT, knowledge graph) as child processes and communicates via JSON-RPC over stdin/stdout.
+
+## License
+
+See LICENSE file for details.