Initial commit: Context Manager v1.0.0

Sistema local de gestión de contexto para IA:
- Log inmutable (blockchain-style)
- Algoritmos versionados y mejorables
- Agnóstico al modelo (Anthropic, OpenAI, Ollama)
- Sistema de métricas y A/B testing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

schemas/00_base.sql

@@ -0,0 +1,39 @@
+-- ============================================
+-- CONTEXT MANAGER - BASE TYPES
+-- Sistema local de gestión de contexto para IA
+-- ============================================
+
+-- Extension para UUIDs
+CREATE EXTENSION IF NOT EXISTS "pgcrypto";
+
+-- ============================================
+-- TIPOS ENUMERADOS
+-- ============================================
+
+CREATE TYPE mensaje_role AS ENUM ('user', 'assistant', 'system', 'tool');
+CREATE TYPE context_source AS ENUM ('memory', 'knowledge', 'history', 'ambient', 'dataset');
+CREATE TYPE algorithm_status AS ENUM ('draft', 'testing', 'active', 'deprecated');
+CREATE TYPE metric_type AS ENUM ('relevance', 'token_efficiency', 'response_quality', 'latency');
+
+-- ============================================
+-- FUNCIÓN: Timestamp de actualización
+-- ============================================
+
+CREATE OR REPLACE FUNCTION update_updated_at_column()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = CURRENT_TIMESTAMP;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- ============================================
+-- FUNCIÓN: Hash SHA-256
+-- ============================================
+
+CREATE OR REPLACE FUNCTION sha256_hash(content TEXT)
+RETURNS VARCHAR(64) AS $$
+BEGIN
+    RETURN encode(digest(content, 'sha256'), 'hex');
+END;
+$$ LANGUAGE plpgsql IMMUTABLE;