Фаза 1: скелет MCP-сервера пам'яті

- TypeScript + @modelcontextprotocol/sdk, Streamable HTTP (stateless), API-ключ
- Схема БД: projects, memories (FTS + vector 1024), memory_links, sessions
- Інструменти: memory_* (save/query/get/update/delete/link/graph), project_* (list/create/get_state/save_state)
- EmbeddingProvider абстракція (Null у фазі 1, Ollama bge-m3 у фазі 2)
- Dockerfile + compose.yml (ai-memory-server + ai-memory-db pgvector/pgvector:pg18)
- Оновлено нотатки: PostgreSQL 18 як сервіс у stack'у проекту

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

migrations/001_init.sql

@@ -0,0 +1,54 @@
+-- Початкова схема ai_memory (див. нотатку "Модель даних")
+CREATE EXTENSION IF NOT EXISTS vector;
+
+CREATE TABLE IF NOT EXISTS projects (
+  id          bigserial PRIMARY KEY,
+  name        text NOT NULL UNIQUE,
+  summary     text,
+  status      text NOT NULL DEFAULT 'active',
+  metadata    jsonb NOT NULL DEFAULT '{}',
+  created_at  timestamptz NOT NULL DEFAULT now(),
+  updated_at  timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE TABLE IF NOT EXISTS memories (
+  id          bigserial PRIMARY KEY,
+  project_id  bigint REFERENCES projects(id) ON DELETE CASCADE,
+  type        text NOT NULL DEFAULT 'note',
+  title       text NOT NULL,
+  content     text NOT NULL DEFAULT '',
+  content_tsv tsvector GENERATED ALWAYS AS (
+    to_tsvector('simple', coalesce(title, '') || ' ' || coalesce(content, ''))
+  ) STORED,
+  embedding   vector(1024),
+  metadata    jsonb NOT NULL DEFAULT '{}',
+  created_at  timestamptz NOT NULL DEFAULT now(),
+  updated_at  timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS memories_tsv_idx ON memories USING gin (content_tsv);
+CREATE INDEX IF NOT EXISTS memories_project_idx ON memories (project_id);
+CREATE INDEX IF NOT EXISTS memories_type_idx ON memories (type);
+
+CREATE TABLE IF NOT EXISTS memory_links (
+  source_id  bigint NOT NULL REFERENCES memories(id) ON DELETE CASCADE,
+  target_id  bigint NOT NULL REFERENCES memories(id) ON DELETE CASCADE,
+  link_type  text NOT NULL DEFAULT 'related',
+  created_at timestamptz NOT NULL DEFAULT now(),
+  PRIMARY KEY (source_id, target_id, link_type)
+);
+
+CREATE INDEX IF NOT EXISTS memory_links_target_idx ON memory_links (target_id);
+
+CREATE TABLE IF NOT EXISTS sessions (
+  id                 bigserial PRIMARY KEY,
+  project_id         bigint NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
+  session_summary    text,
+  todo_json          jsonb NOT NULL DEFAULT '{"tasks": []}',
+  changes            text,
+  bugs               text,
+  architecture_notes text,
+  created_at         timestamptz NOT NULL DEFAULT now()
+);
+
+CREATE INDEX IF NOT EXISTS sessions_project_idx ON sessions (project_id, created_at DESC);