chore: organize documentation structure for monorepo

- Create /docs structure (microdao, daarion, agents)
- Organize 61 cursor technical docs
- Add README files for each category
- Copy key documents to public categories
- Add GitHub setup instructions and scripts

supabase/migrations/000007_embassy.sql

@@ -0,0 +1,48 @@
+-- 000007_embassy.sql
+-- Up
+
+create table if not exists embassy_identities (
+  id text primary key,           -- emb_...
+  external_id text not null,
+  platform text not null check (
+    platform in ('energy_union','greenfood','water_union','essence_stream','daarion_core','daarwizz')
+  ),
+  user_id text references users(id) on delete set null,
+  team_id text references teams(id) on delete set null,
+  metadata jsonb default '{}'::jsonb,
+  created_at timestamptz not null default now()
+);
+
+create index if not exists idx_embassy_identities_platform_external
+  on embassy_identities(platform, external_id);
+
+create table if not exists embassy_webhooks (
+  id text primary key,           -- hook_...
+  platform text not null check (
+    platform in ('energy_union','greenfood','water_union','essence_stream','daarion_core','daarwizz')
+  ),
+  url text not null,
+  secret text not null,
+  is_active boolean not null default true,
+  created_at timestamptz not null default now()
+);
+
+create index if not exists idx_embassy_webhooks_platform_active
+  on embassy_webhooks(platform, is_active);
+
+create table if not exists oracles (
+  id text primary key,
+  platform text not null check (
+    platform in ('energy_union','greenfood','water_union','essence_stream')
+  ),
+  payload jsonb not null,
+  created_at timestamptz not null default now()
+);
+
+create index if not exists idx_oracles_platform_created_at
+  on oracles(platform, created_at);
+
+-- Down
+drop table if exists oracles cascade;
+drop table if exists embassy_webhooks cascade;
+drop table if exists embassy_identities cascade;