Changeset 0.22.8 (#150)

server/database/migrations/008_memory.sql

@@ -0,0 +1,82 @@
+-- ==========================================
+-- Chat Switchboard — 008 Memory
+-- ==========================================
+-- Long-term memory across conversations, extraction tracking.
+-- ICD §9 (Memory)
+-- ==========================================
+
+-- =========================================
+-- MEMORIES
+-- =========================================
+
+CREATE TABLE IF NOT EXISTS memories (
+    id                UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    scope             TEXT NOT NULL CHECK (scope IN ('user', 'persona', 'persona_user')),
+    owner_id          UUID NOT NULL,
+    user_id           UUID,
+    key               TEXT NOT NULL,
+    value             TEXT NOT NULL,
+    source_channel_id UUID,
+    confidence        REAL NOT NULL DEFAULT 1.0,
+    status            TEXT NOT NULL DEFAULT 'active'
+                      CHECK (status IN ('active', 'pending_review', 'archived')),
+    embedding         vector(3072),
+    created_at        TIMESTAMPTZ DEFAULT now(),
+    updated_at        TIMESTAMPTZ DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS idx_memories_scope_owner
+    ON memories(scope, owner_id, status)
+    WHERE status = 'active';
+
+CREATE INDEX IF NOT EXISTS idx_memories_persona_user
+    ON memories(owner_id, user_id)
+    WHERE scope = 'persona_user' AND status = 'active';
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_memories_unique_key
+    ON memories(scope, owner_id, COALESCE(user_id, '00000000-0000-0000-0000-000000000000'), key);
+
+CREATE INDEX IF NOT EXISTS idx_memories_fts
+    ON memories USING gin(to_tsvector('english', key || ' ' || value));
+
+CREATE INDEX IF NOT EXISTS idx_memories_source_channel
+    ON memories(source_channel_id)
+    WHERE source_channel_id IS NOT NULL;
+
+COMMENT ON TABLE memories IS 'Long-term memory facts persisted across conversations';
+COMMENT ON COLUMN memories.scope IS 'user = personal facts; persona = shared; persona_user = per-user within a persona';
+COMMENT ON COLUMN memories.owner_id IS 'user_id for user scope, persona_id for persona/persona_user scopes';
+COMMENT ON COLUMN memories.confidence IS '0.0-1.0 confidence score — higher = more certain';
+
+CREATE OR REPLACE FUNCTION update_memories_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = now();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+DROP TRIGGER IF EXISTS trg_memories_updated_at ON memories;
+CREATE TRIGGER trg_memories_updated_at
+    BEFORE UPDATE ON memories
+    FOR EACH ROW EXECUTE FUNCTION update_memories_updated_at();
+
+
+-- =========================================
+-- MEMORY EXTRACTION LOG (v0.18.0 Phase 2)
+-- =========================================
+
+CREATE TABLE IF NOT EXISTS memory_extraction_log (
+    id            UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    channel_id    UUID NOT NULL,
+    user_id       UUID NOT NULL,
+    last_message_id UUID NOT NULL,
+    extracted_at  TIMESTAMPTZ DEFAULT now(),
+    memory_count  INT NOT NULL DEFAULT 0,
+    UNIQUE(channel_id, user_id)
+);
+
+CREATE INDEX IF NOT EXISTS idx_mem_extract_log_channel
+    ON memory_extraction_log(channel_id);
+
+COMMENT ON TABLE memory_extraction_log IS 'Tracks extraction progress per channel+user to prevent re-processing';