Phase 7: Agent Selector — per-agent soul.md + ChromaDB memory filtering

- Agent dropdown UI (chip button + hidden select) in composer header
- Session.agent field persists agent selection across refresh
- soul.md loaded per-agent via ephemeral_system_prompt injection
- ChromaDB memory filtered by agent topic (lotus/, sunflower/, etc.)
- Fixed streaming.py: agent→_ai_agent variable shadowing (lines 1161, 1163)
- New API endpoints: /api/agents/topology, /api/agents/memory/search
- Agent metadata registry with emoji, name, description per Tier-2 agent

static/i18n.js

@@ -229,7 +229,7 @@ const LOCALES = {
     tab_memory: 'Memory',
     tab_workspaces: 'Spaces',
     tab_profiles: 'Profiles',
-    tab_todos: 'Todos',
+
     new_conversation: 'New conversation',
     filter_conversations: 'Filter conversations...',
     session_time_unknown: 'Unknown',
@@ -249,7 +249,7 @@ const LOCALES = {
     search_skills: 'Search skills...',
     new_skill: 'New skill',
     personal_memory: 'Personal memory',
-    current_task_list: 'Current task list',
+
     workspace_desc: 'Add and switch workspaces for your sessions.',
     new_profile: 'New profile',
     transcript: 'Transcript',
@@ -403,7 +403,7 @@ const LOCALES = {
     cron_completion_status: (name, status) => `Cron "${name}" ${status}`,
     status_failed: 'failed',
     status_completed: 'completed',
-    todos_no_active: 'No active task list in this session.',
+
     clear_conversation_title: 'Clear conversation',
     clear_conversation_message: 'Clear all messages? This cannot be undone.',
     clear_failed: 'Clear failed: ',
@@ -667,7 +667,7 @@ const LOCALES = {
     tab_memory: 'Память',
     tab_workspaces: 'Рабочие пространства',
     tab_profiles: 'Профили',
-    tab_todos: 'Список дел',
+
     new_conversation: 'Новая беседа',
     filter_conversations: 'Фильтр бесед...',
     session_time_unknown: 'Неизвестно',
@@ -714,7 +714,7 @@ const LOCALES = {
     search_skills: 'Поиск навыков...',
     new_skill: 'Новый навык',
     personal_memory: 'Личная память',
-    current_task_list: 'Текущий список задач',
+
     workspace_desc: 'Добавляйте рабочие пространства и переключайтесь между ними в своих сеансах.',
     new_profile: 'Новый профиль',
     transcript: 'Транскрипт',
@@ -864,7 +864,7 @@ const LOCALES = {
     cron_completion_status: (name, status) => `Cron-задание «${name}» — ${status}`,
     status_failed: 'неудачно',
     status_completed: 'завершено',
-    todos_no_active: 'В этой сессии нет активного списка задач.',
+
     clear_conversation_title: 'Очистить беседу',
     clear_conversation_message: 'Очистить все сообщения? Это действие нельзя отменить.',
     clear_failed: 'Не удалось очистить: ',
@@ -1133,7 +1133,7 @@ const LOCALES = {
     tab_memory: 'Memoria',
     tab_workspaces: 'Espacios',
     tab_profiles: 'Perfiles',
-    tab_todos: 'Todos',
+
     new_conversation: 'Nueva conversación',
     filter_conversations: 'Filtrar conversaciones...',
     session_time_unknown: 'Desconocido',
@@ -1153,7 +1153,7 @@ const LOCALES = {
     search_skills: 'Buscar skills...',
     new_skill: 'Nueva skill',
     personal_memory: 'Memoria personal',
-    current_task_list: 'Lista de tareas actual',
+
     workspace_desc: 'Añade y cambia espacios de trabajo para tus sesiones.',
     new_profile: 'Nuevo perfil',
     transcript: 'Transcripción',
@@ -1307,7 +1307,7 @@ const LOCALES = {
     cron_completion_status: (name, status) => `Cron "${name}" ${status}`,
     status_failed: 'failed',
     status_completed: 'completed',
-    todos_no_active: 'No active task list in this session.',
+
     clear_conversation_title: 'Clear conversation',
     clear_conversation_message: 'Clear all messages? This cannot be undone.',
     clear_failed: 'Clear failed: ',
@@ -1580,7 +1580,7 @@ const LOCALES = {
     tab_memory: 'Gedächtnis',
     tab_workspaces: 'Spaces',
     tab_profiles: 'Profile',
-    tab_todos: 'Todos',
+
     new_conversation: 'Neuer Chat',
     filter_conversations: 'Chats filtern...',
     scheduled_jobs: 'Geplante Aufgaben',
@@ -1589,7 +1589,7 @@ const LOCALES = {
     search_skills: 'Skills suchen...',
     new_skill: 'Neuer Skill',
     personal_memory: 'Persönliches Gedächtnis',
-    current_task_list: 'Aktuelle Aufgabenliste',
+
     workspace_desc: 'Workspaces hinzufügen und wechseln.',
     new_profile: 'Neues Profil',
     transcript: 'Protokoll',
@@ -1797,7 +1797,7 @@ const LOCALES = {
     tab_memory: '记忆',
     tab_skills: '技能',
     tab_tasks: '任务',
-    tab_todos: '待办',
+
     tab_workspaces: '工作区',
     tab_profiles: '配置',
     new_conversation: '新建对话',
@@ -1819,7 +1819,7 @@ const LOCALES = {
     new_skill: '新技能',
     save_skill: '保存技能',
     personal_memory: '个人记忆',
-    current_task_list: '当前任务列表',
+
     workspace_desc: '为你的会话添加并切换工作区。',
     new_profile: '新配置',
     transcript: '记录',
@@ -1971,7 +1971,7 @@ const LOCALES = {
     cron_completion_status: (name, status) => `定时任务“${name}”${status}`,
     status_failed: '失败',
     status_completed: '完成',
-    todos_no_active: '此会话暂无活动任务列表。',
+
     clear_conversation_title: '清空对话',
     clear_conversation_message: '要清空所有消息吗？此操作无法撤销。',
     clear_failed: '清空失败：',
@@ -2246,7 +2246,6 @@ const LOCALES = {
     new_skill: '\u65b0\u6280\u80fd',
     save_skill: '\u5132\u5b58\u6280\u80fd',
     personal_memory: '\u500b\u4eba\u8a18\u61b6',
-    current_task_list: '\u76ee\u524d\u4efb\u52d9\u6e05\u55ae',
     new_profile: '\u65b0\u914d\u7f6e\u6a94',
     transcript: '\u8a18\u9304',
     download_transcript: '\u4e0b\u8f09\u8a18\u9304',