Initial import of LogDarioSeq baseline

Establishes version control for the personal Logseq DB fork before
starting the server-client architecture migration and domain features
described in docs/agent-guide and the approved implementation plan.

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

deps/db-sync/worker/migrations/0001_init.sql

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+create table if not exists graphs (
+  graph_id text primary key,
+  graph_name text,
+  user_id text,
+  schema_version text,
+  created_at integer,
+  updated_at integer
+);
+
+create table if not exists users (
+  id text primary key,
+  email text,
+  email_verified integer,
+  username text
+);
+
+create table if not exists user_rsa_keys (
+  user_id text primary key,
+  public_key text,
+  encrypted_private_key text,
+  created_at integer,
+  updated_at integer
+);
+
+create table if not exists graph_members (
+  user_id text,
+  graph_id text,
+  role text,
+  invited_by text,
+  created_at integer,
+  primary key (user_id, graph_id),
+  check (role in ('manager', 'member'))
+);
+
+create table if not exists graph_aes_keys (
+  graph_id text,
+  user_id text,
+  encrypted_aes_key text,
+  created_at integer,
+  updated_at integer,
+  primary key (graph_id, user_id)
+);

deps/db-sync/worker/migrations/0002_add_graph_e2ee.sql

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+alter table graphs
+add column graph_e2ee integer default 1;

deps/db-sync/worker/migrations/0003_add_indexes.sql

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+create index if not exists idx_graph_members_graph_id_created_at
+on graph_members (graph_id, created_at);
+
+create index if not exists idx_graphs_user_id_updated_at
+on graphs (user_id, updated_at desc);
+
+create index if not exists idx_users_email
+on users (email);

deps/db-sync/worker/migrations/0004_add_graph_ready_for_use.sql

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+alter table graphs
+add column graph_ready_for_use integer default 1;

deps/db-sync/worker/migrations/0005_add_user_created_at.sql

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+alter table users
+add column created_at integer;

deps/db-sync/worker/migrations/0006_add_daily_active_entities.sql

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+create table if not exists daily_active_entities (
+  day_utc text,
+  entity_type text,
+  entity_id text,
+  first_seen_at integer,
+  primary key (day_utc, entity_type, entity_id),
+  check (entity_type in ('user', 'graph'))
+);
+
+create index if not exists idx_daily_active_entities_type_day
+on daily_active_entities (entity_type, day_utc);