feat(ui): add identity management for tenants and users

* Implement tenant and user creation in IdentityPage
* Add API calls for managing tenants and users
* Introduce tenant-scoped API requests
* Update sidebar to include identity navigation
* Create BooleanStatusBadge component for key status

schema/agent_personas.dbml

@@ -1,7 +1,8 @@
 Table agent_personas {
   id bigserial [pk]
   guid uuid [unique, not null, default: `gen_random_uuid()`]
-  name text [unique, not null]
+  name text [not null]
+  tenant_id text [ref: > tenants.id]
   description text [not null, default: '']
   summary text [not null]
   detail text [not null, default: '']
@@ -11,12 +12,15 @@ Table agent_personas {
   tags "text[]" [not null, default: `'{}'`]
   created_at timestamptz [not null, default: `now()`]
   updated_at timestamptz [not null, default: `now()`]
+
+  indexes { (tenant_id, name) [unique] tenant_id }
 }
 
 Table agent_parts {
   id bigserial [pk]
   guid uuid [unique, not null, default: `gen_random_uuid()`]
-  name text [unique, not null]
+  name text [not null]
+  tenant_id text [ref: > tenants.id]
   part_type text [not null]
   description text [not null, default: '']
   summary text [not null]
@@ -24,6 +28,8 @@ Table agent_parts {
   tags "text[]" [not null, default: `'{}'`]
   created_at timestamptz [not null, default: `now()`]
   updated_at timestamptz [not null, default: `now()`]
+
+  indexes { (tenant_id, name) [unique] tenant_id }
 }
 
 Table agent_persona_parts {
@@ -77,13 +83,16 @@ Table agent_persona_guardrails {
 Table agent_traits {
   id bigserial [pk]
   guid uuid [unique, not null, default: `gen_random_uuid()`]
-  name text [unique, not null]
+  name text [not null]
+  tenant_id text [ref: > tenants.id]
   trait_type text [not null]
   description text [not null, default: '']
   instruction text [not null, default: '']
   tags "text[]" [not null, default: `'{}'`]
   created_at timestamptz [not null, default: `now()`]
   updated_at timestamptz [not null, default: `now()`]
+
+  indexes { (tenant_id, name) [unique] tenant_id }
 }
 
 Table agent_persona_traits {
@@ -98,11 +107,14 @@ Table agent_persona_traits {
 
 Table character_arcs {
   id bigserial [pk]
-  name text [unique, not null]
+  name text [not null]
+  tenant_id text [ref: > tenants.id]
   description text [not null, default: '']
   summary text [not null, default: '']
   created_at timestamptz [not null, default: `now()`]
   updated_at timestamptz [not null, default: `now()`]
+
+  indexes { (tenant_id, name) [unique] tenant_id }
 }
 
 Table arc_stages {
@@ -127,7 +139,7 @@ Table arc_stage_parts {
 
 Table persona_arc {
   id bigserial [pk]
-  persona_id bigint [pk, ref: > agent_personas.id]
+  persona_id bigint [unique, not null, ref: > agent_personas.id]
   arc_id bigint [not null, ref: > character_arcs.id]
   current_stage_id bigint [not null, ref: > arc_stages.id]
   updated_at timestamptz [not null, default: `now()`]

schema/core.dbml

@@ -6,12 +6,12 @@ Table thoughts {
   created_at timestamptz [default: `now()`]
   updated_at timestamptz [default: `now()`]
   project_id bigint [ref: > projects.id]
-  tenant_key text
+  tenant_id text [ref: > tenants.id]
   archived_at timestamptz
 
   indexes {
-    tenant_key
-    (tenant_key, project_id)
+    tenant_id
+    (tenant_id, project_id)
   }
 }
 
@@ -20,13 +20,13 @@ Table projects {
   guid uuid [unique, not null, default: `gen_random_uuid()`]
   name text [not null]
   description text
-  tenant_key text
+  tenant_id text [ref: > tenants.id]
   created_at timestamptz [default: `now()`]
   last_active_at timestamptz [default: `now()`]
 
   indexes {
-    (tenant_key, name) [unique]
-    tenant_key
+    (tenant_id, name) [unique]
+    tenant_id
   }
 }
 

schema/files.dbml

@@ -3,7 +3,7 @@ Table stored_files {
   guid uuid [unique, not null, default: `gen_random_uuid()`]
   thought_id bigint [ref: > thoughts.id]
   project_id bigint [ref: > projects.id]
-  tenant_key text
+  tenant_id text [ref: > tenants.id]
   name text [not null]
   media_type text [not null]
   kind text [not null, default: 'file']
@@ -17,7 +17,7 @@ Table stored_files {
   indexes {
     thought_id
     project_id
-    tenant_key
+    tenant_id
     sha256
   }
 }

schema/identity.dbml

@@ -0,0 +1,33 @@
+Table tenants {
+  id         text        [pk]
+  name       text        [not null, unique]
+  created_at timestamptz [not null, default: `now()`]
+}
+
+Table tenant_users {
+  id         text        [pk]
+  tenant_id  text        [not null, ref: > tenants.id]
+  name       text        [not null]
+  email      text
+  created_at timestamptz [not null, default: `now()`]
+
+  Indexes {
+    tenant_id
+    (tenant_id, email) [unique]
+  }
+}
+
+Table api_key_assignments {
+  key_id      text        [pk]
+  tenant_id   text        [not null, ref: > tenants.id]
+  user_id     text        [ref: > tenant_users.id]
+  description text        [not null, default: '']
+  source      text        [not null]
+  enabled     boolean     [not null, default: true]
+  created_at  timestamptz [not null, default: `now()`]
+}
+
+Table managed_api_keys {
+  key_id      text        [pk, ref: > api_key_assignments.key_id]
+  secret_hash text        [not null]
+}

schema/meta.dbml

@@ -6,7 +6,7 @@ Table chat_histories {
   channel text
   agent_id text
   project_id bigint [ref: > projects.id]
-  tenant_key text
+  tenant_id text [ref: > tenants.id]
   messages jsonb [not null, default: `'[]'`]
   summary text
   metadata jsonb [not null, default: `'{}'`]
@@ -16,7 +16,7 @@ Table chat_histories {
   indexes {
     session_id
     project_id
-    tenant_key
+    tenant_id
     channel
     agent_id
     created_at
@@ -48,7 +48,7 @@ Table learnings {
   source_type text
   source_ref text
   project_id bigint [ref: > projects.id]
-  tenant_key text
+  tenant_id text [ref: > tenants.id]
   related_thought_id bigint [ref: > thoughts.id]
   related_skill_id bigint [ref: > agent_skills.id]
   reviewed_by text
@@ -61,7 +61,7 @@ Table learnings {
 
   indexes {
     project_id
-    tenant_key
+    tenant_id
     category
     area
     status

schema/plans.dbml

@@ -6,7 +6,7 @@ Table plans {
   status text [not null, default: 'draft']       // draft, active, blocked, completed, cancelled, superseded
   priority text [not null, default: 'medium']    // low, medium, high, critical
   project_id bigint [ref: > projects.id]
-  tenant_key text
+  tenant_id text [ref: > tenants.id]
   owner text
   due_date timestamptz
   completed_at timestamptz
@@ -19,7 +19,7 @@ Table plans {
 
   indexes {
     project_id
-    tenant_key
+    tenant_id
     status
     priority
     owner

schema/skills.dbml

@@ -1,7 +1,8 @@
 Table agent_skills {
   id bigserial [pk]
   guid uuid [unique, not null, default: `gen_random_uuid()`]
-  name text [unique, not null]
+  name text [not null]
+  tenant_id text [ref: > tenants.id]
   description text [not null, default: '']
   content text [not null]
   tags "text[]" [not null, default: `'{}'`]
@@ -11,18 +12,23 @@ Table agent_skills {
   domain_tags "text[]" [not null, default: `'{}'`]
   created_at timestamptz [not null, default: `now()`]
   updated_at timestamptz [not null, default: `now()`]
+
+  indexes { (tenant_id, name) [unique] tenant_id }
 }
 
 Table agent_guardrails {
   id bigserial [pk]
   guid uuid [unique, not null, default: `gen_random_uuid()`]
-  name text [unique, not null]
+  name text [not null]
+  tenant_id text [ref: > tenants.id]
   description text [not null, default: '']
   content text [not null]
   severity text [not null, default: 'medium']
   tags "text[]" [not null, default: `'{}'`]
   created_at timestamptz [not null, default: `now()`]
   updated_at timestamptz [not null, default: `now()`]
+
+  indexes { (tenant_id, name) [unique] tenant_id }
 }
 
 Table project_skills {