feat: finish the ai plugin (B18)

src/backend/database/db/schema.ts

@@ -265,9 +265,6 @@ export const hosts = sqliteTable(
     enableTerminalToolbar: integer("enable_terminal_toolbar", { mode: "boolean" })
       .notNull()
       .default(true),
-    enableAiAssistant: integer("enable_ai_assistant", { mode: "boolean" })
-      .notNull()
-      .default(false),
     showTerminalInSidebar: integer("show_terminal_in_sidebar", { mode: "boolean" })
       .notNull()
       .default(true),
@@ -865,12 +862,6 @@ export const userPreferences = sqliteTable("user_preferences", {
   disableUpdateCheck: integer("disable_update_check", { mode: "boolean" }),
   confirmTabClose: integer("confirm_tab_close", { mode: "boolean" }),
   hiddenRailTabs: text("hidden_rail_tabs"),
-  // null means the user has not been asked yet; the assistant stays hidden
-  // until this is explicitly true and the admin global is on.
-  aiAssistantEnabled: integer("ai_assistant_enabled", { mode: "boolean" }),
-  // Opt-in to letting the assistant run allowlisted read-only diagnostics
-  // without a per-command approval click.
-  aiReadOnlyCommands: integer("ai_read_only_commands", { mode: "boolean" }),
   compactHostView: integer("compact_host_view", { mode: "boolean" }),
   statusColorScheme: text("status_color_scheme"),
   customThemes: text("custom_themes"),
@@ -1085,121 +1076,6 @@ export const syncTombstones = sqliteTable("sync_tombstones", {
 });
 // --- sync end ---
 
-// --- ai begin ---
-/**
- * A user's connection to one AI provider. api_key is encrypted at rest via
- * FieldCrypto; it is never returned to the frontend, which only ever sees
- * api_key_prefix for display.
- */
-export const aiProviders = sqliteTable(
-  "ai_providers",
-  {
-    id: integer("id").primaryKey({ autoIncrement: true }),
-    userId: text("user_id")
-      .notNull()
-      .references(() => users.id, { onDelete: "cascade" }),
-    // ollama | anthropic | openai | gemini | openai_compatible
-    providerType: text("provider_type").notNull(),
-    label: text("label").notNull(),
-    // Required for ollama and openai_compatible, optional elsewhere.
-    baseUrl: text("base_url"),
-    apiKey: text("api_key", { length: 8192 }),
-    // First few characters, kept in the clear so the UI can identify a key.
-    apiKeyPrefix: text("api_key_prefix"),
-    defaultModel: text("default_model"),
-    enabled: integer("enabled", { mode: "boolean" }).notNull().default(true),
-    createdAt: text("created_at")
-      .notNull()
-      .default(sql`CURRENT_TIMESTAMP`),
-    updatedAt: text("updated_at")
-      .notNull()
-      .default(sql`CURRENT_TIMESTAMP`),
-  },
-  (table) => [
-    uniqueIndex("idx_ai_providers_user_label").on(table.userId, table.label),
-  ],
-);
-
-export const aiConversations = sqliteTable(
-  "ai_conversations",
-  {
-    id: integer("id").primaryKey({ autoIncrement: true }),
-    userId: text("user_id")
-      .notNull()
-      .references(() => users.id, { onDelete: "cascade" }),
-    title: text("title"),
-    providerId: integer("provider_id"),
-    model: text("model"),
-    createdAt: text("created_at")
-      .notNull()
-      .default(sql`CURRENT_TIMESTAMP`),
-    updatedAt: text("updated_at")
-      .notNull()
-      .default(sql`CURRENT_TIMESTAMP`),
-  },
-  (table) => [
-    index("idx_ai_conversations_user").on(table.userId, table.updatedAt),
-  ],
-);
-
-export const aiMessages = sqliteTable(
-  "ai_messages",
-  {
-    id: integer("id").primaryKey({ autoIncrement: true }),
-    conversationId: integer("conversation_id")
-      .notNull()
-      .references(() => aiConversations.id, { onDelete: "cascade" }),
-    // user | assistant | tool
-    role: text("role").notNull(),
-    content: text("content").notNull().default(""),
-    // Serialized tool calls and their results for this turn.
-    toolCalls: text("tool_calls"),
-    createdAt: text("created_at")
-      .notNull()
-      .default(sql`CURRENT_TIMESTAMP`),
-  },
-  (table) => [
-    index("idx_ai_messages_conversation").on(
-      table.conversationId,
-      table.createdAt,
-    ),
-  ],
-);
-
-/**
- * A change the assistant wants to make. Nothing here has been applied: the
- * payload is re-validated against the tool schema at apply time and only then
- * dispatched through the same repository logic a human action uses.
- */
-export const aiProposals = sqliteTable(
-  "ai_proposals",
-  {
-    id: integer("id").primaryKey({ autoIncrement: true }),
-    conversationId: integer("conversation_id")
-      .notNull()
-      .references(() => aiConversations.id, { onDelete: "cascade" }),
-    userId: text("user_id")
-      .notNull()
-      .references(() => users.id, { onDelete: "cascade" }),
-    // The propose_* tool name that produced this.
-    kind: text("kind").notNull(),
-    summary: text("summary"),
-    payload: text("payload").notNull().default("{}"),
-    // pending | applied | rejected | expired
-    status: text("status").notNull().default("pending"),
-    appliedAt: text("applied_at"),
-    resultSummary: text("result_summary"),
-    createdAt: text("created_at")
-      .notNull()
-      .default(sql`CURRENT_TIMESTAMP`),
-  },
-  (table) => [
-    index("idx_ai_proposals_user").on(table.userId, table.status),
-    index("idx_ai_proposals_conversation").on(table.conversationId),
-  ],
-);
-// --- ai end ---
-
 // --- collab rooms ---
 
 // --- secret sources ---