diff --git a/schemas/05_cto.sql b/schemas/05_cto.sql
new file mode 100644
index 0000000..1368ffb
--- /dev/null
+++ b/schemas/05_cto.sql
@@ -0,0 +1,127 @@
+-- =============================================================================
+-- Context Manager Schema (CTO) v1.0
+-- Sistema de gestión de contexto con embeddings
+-- Requiere: pgvector extension
+-- =============================================================================
+
+CREATE EXTENSION IF NOT EXISTS vector;
+CREATE SCHEMA IF NOT EXISTS cto;
+
+-- -----------------------------------------------------------------------------
+-- cto.blocks: Bloques de memoria con embeddings
+-- -----------------------------------------------------------------------------
+CREATE TABLE IF NOT EXISTS cto.blocks (
+    id              BIGSERIAL PRIMARY KEY,
+    hash            CHAR(64) UNIQUE NOT NULL,      -- SHA-256 del contenido
+    session_hash    CHAR(64) NOT NULL,             -- Sesión origen
+    owner_id        CHAR(64) NOT NULL,             -- Propietario (PLY hash)
+    block_type      TEXT NOT NULL DEFAULT 'fact',  -- fact|instruction|preference|context
+    content         TEXT NOT NULL,                 -- Contenido del bloque
+    embedding       vector(1536),                  -- OpenAI text-embedding-3-small
+    importance      FLOAT DEFAULT 0.5,             -- 0.0-1.0
+    access_count    INT DEFAULT 0,                 -- Frecuencia de acceso
+    last_accessed   TIMESTAMPTZ,                   -- Último acceso
+    source_hash     CHAR(64),                      -- Mensaje origen (log.messages.hash)
+    metadata        JSONB DEFAULT '{}',            -- Metadatos adicionales
+    created_at      TIMESTAMPTZ DEFAULT NOW(),
+    updated_at      TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Índices para blocks
+CREATE INDEX IF NOT EXISTS idx_blocks_session ON cto.blocks(session_hash);
+CREATE INDEX IF NOT EXISTS idx_blocks_owner ON cto.blocks(owner_id);
+CREATE INDEX IF NOT EXISTS idx_blocks_type ON cto.blocks(block_type);
+CREATE INDEX IF NOT EXISTS idx_blocks_importance ON cto.blocks(importance DESC);
+CREATE INDEX IF NOT EXISTS idx_blocks_embedding ON cto.blocks USING ivfflat (embedding vector_cosine_ops) WITH (lists = 100);
+
+-- -----------------------------------------------------------------------------
+-- cto.memory: Memoria activa por sesión
+-- -----------------------------------------------------------------------------
+CREATE TABLE IF NOT EXISTS cto.memory (
+    id              BIGSERIAL PRIMARY KEY,
+    session_hash    CHAR(64) NOT NULL,             -- Sesión actual
+    owner_id        CHAR(64) NOT NULL,             -- Propietario
+    block_hash      CHAR(64) NOT NULL REFERENCES cto.blocks(hash),
+    position        INT NOT NULL,                  -- Orden en contexto
+    score           FLOAT DEFAULT 0.0,             -- Puntuación de relevancia
+    token_count     INT DEFAULT 0,                 -- Tokens consumidos
+    included        BOOLEAN DEFAULT true,          -- Incluido en contexto actual
+    created_at      TIMESTAMPTZ DEFAULT NOW(),
+    UNIQUE(session_hash, block_hash)
+);
+
+-- Índices para memory
+CREATE INDEX IF NOT EXISTS idx_memory_session ON cto.memory(session_hash);
+CREATE INDEX IF NOT EXISTS idx_memory_position ON cto.memory(session_hash, position);
+CREATE INDEX IF NOT EXISTS idx_memory_score ON cto.memory(score DESC);
+
+-- -----------------------------------------------------------------------------
+-- cto.algorithms: Configuración de algoritmos
+-- -----------------------------------------------------------------------------
+CREATE TABLE IF NOT EXISTS cto.algorithms (
+    id              SERIAL PRIMARY KEY,
+    name            TEXT UNIQUE NOT NULL,
+    version         TEXT NOT NULL DEFAULT '1.0',
+    description     TEXT,
+    config          JSONB NOT NULL DEFAULT '{}',
+    enabled         BOOLEAN DEFAULT true,
+    created_at      TIMESTAMPTZ DEFAULT NOW(),
+    updated_at      TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- -----------------------------------------------------------------------------
+-- Función y triggers para updated_at
+-- -----------------------------------------------------------------------------
+CREATE OR REPLACE FUNCTION cto.update_timestamp()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+DROP TRIGGER IF EXISTS blocks_updated ON cto.blocks;
+DROP TRIGGER IF EXISTS algorithms_updated ON cto.algorithms;
+
+CREATE TRIGGER blocks_updated 
+    BEFORE UPDATE ON cto.blocks 
+    FOR EACH ROW EXECUTE FUNCTION cto.update_timestamp();
+
+CREATE TRIGGER algorithms_updated 
+    BEFORE UPDATE ON cto.algorithms 
+    FOR EACH ROW EXECUTE FUNCTION cto.update_timestamp();
+
+-- -----------------------------------------------------------------------------
+-- Algoritmos por defecto
+-- -----------------------------------------------------------------------------
+INSERT INTO cto.algorithms (name, version, description, config) VALUES
+('extractor', '1.0', 'Extrae bloques de memoria de mensajes', '{
+    "min_content_length": 10,
+    "max_block_size": 500,
+    "extraction_mode": "heuristic",
+    "patterns": ["fact", "instruction", "preference", "context"]
+}'::jsonb),
+('scorer', '1.0', 'Calcula relevancia de bloques', '{
+    "weights": {
+        "recency": 0.3,
+        "frequency": 0.2,
+        "importance": 0.3,
+        "similarity": 0.2
+    },
+    "decay_factor": 0.95
+}'::jsonb),
+('selector', '1.0', 'Selecciona bloques para contexto', '{
+    "budget_tokens": 8000,
+    "min_score": 0.1,
+    "max_blocks": 50,
+    "strategy": "greedy"
+}'::jsonb),
+('consolidator', '1.0', 'Consolida y comprime bloques', '{
+    "similarity_threshold": 0.85,
+    "merge_strategy": "newest",
+    "compression_ratio": 0.7
+}'::jsonb)
+ON CONFLICT (name) DO UPDATE SET 
+    config = EXCLUDED.config, 
+    version = EXCLUDED.version,
+    updated_at = NOW();