Add workspaces, computers, bot memory and the bots queue

- Schema: workspaces (+ workspace_bots, workspace_computers), containers,
  computers, bot_computers, bots.memory, workspaces.system_prompt, and
  bots_queue as a bun-sqlite isQueue table
- Main computer (and its container record) ensured with the coordinator on
  signup, seed and /admin/bots; the coordinator's access to it is locked
- Effective computer access: direct grants plus workspace computers
- Full bot prompt: core instructions, workspace prompts, then memory;
  bots can rewrite their memory and system prompt
- Queue helpers on the native BunSQLite.queue API, plus a handler that
  heartbeats, serializes per computer, recovers after restarts, reports
  lost jobs, supports cancelling and pushes outcomes over the WebSocket
- Enable SQLite foreign keys at startup so schema cascades fire
- Prune finished jobs daily

Co-Authored-By: Claude Opus 5.5 <[email protected]>

AGENTS.md

@@ -14,12 +14,12 @@ This is **Cobble** (`cobble.moduletrace.org`): an open-source crew of small AI w
 
 ## Entrypoint
 
-`src/server.ts` - runs `bunextInit()`, starts `Bun.serve`, then starts cron:
+`src/server.ts` - turns on SQLite foreign keys (`enableForeignKeys`, so the schema's cascades fire; off by default per connection), runs `bunextInit()`, starts `Bun.serve`, then starts cron:
 
 - `/media/*` short-circuits to the media server handler
 - `/ws` upgrades only after `userAuth` succeeds (session frozen into the socket at upgrade time); the `websocket` handler object lives in `src/websocket/`
 - everything else goes to `bunext.bunextRequestHandler`
-- `cron()` starts after the server is up; in production it is gated to the `MAIN_SERVER` container
+- `cron()` and the bots queue handler (`botsQueue()`, `src/bots-queue/`) start after the server is up; in production both are gated to the `MAIN_SERVER` container
 
 ## Commands
 
@@ -83,13 +83,19 @@ Inspect live data with `bun llm-code-assistant/query-db.ts "<sql>"` - a read-onl
 
 ### Bots (the chat shell)
 
-- **Tables:** `bots` (per-user workspace; `kind` worker|coordinator, `hue`, `role`, `face`, `status_line`, `system_prompt` (the bot's core instructions, markdown), `unread`), `bot_messages`, `bot_tasks`, `bot_task_steps`. Enums in `src/dict/bot-dict.ts`.
+- **Tables:** `bots` (per user; `kind` worker|coordinator, `hue`, `role`, `face`, `status_line`, `system_prompt` (the bot's core instructions, markdown), `unread`), `bot_messages`, `bot_tasks`, `bot_task_steps`. Enums in `src/dict/bot-dict.ts`.
-- **Coordinator:** every workspace has exactly one `kind: coordinator` bot that coordinates the crew and delegates to the workers. It is created with the account (signup, `bun run seed`) and, as a fallback, by `/admin/bots`, all via `ensureCoordinatorBot` (`src/functions/backend/db/bots/ensure-coordinator-bot.ts`, idempotent). Name in `CoordinatorBotName` (`src/dict/bot-dict.ts`). Its default prompt is `CoordinatorSystemPrompt` (`src/data/coordinator-system-prompt.ts`): attached at creation, and backfilled onto a coordinator whose prompt is empty, never over an edited one.
+- **Coordinator:** every user has exactly one `kind: coordinator` bot that coordinates the crew and delegates to the workers. It is created with the account (signup, `bun run seed`) and, as a fallback, by `/admin/bots`, all via `ensureCoordinatorBot` (`src/functions/backend/db/bots/ensure-coordinator-bot.ts`, idempotent). Name in `CoordinatorBotName` (`src/dict/bot-dict.ts`). Its default prompt is `CoordinatorSystemPrompt` (`src/data/coordinator-system-prompt.ts`): attached at creation, and backfilled onto a coordinator whose prompt is empty, never over an edited one.
 - **Routes:** `/admin/bots` ensures the coordinator and redirects to its chat (`/admin/bots/1` on a fresh install); `/admin/bots/[bot_id]` renders conversation + working-on panel. Both render in the full-bleed `src/layouts/bots/` layout (rail of conversations + user popover), which `__root.tsx` uses for every `/admin/*` page.
 - **Server:** `src/functions/backend/db/bots/` (`grab-bots`, `grab-bot-messages`, `grab-active-bot-task`, `grab-user-bot`, `mark-bot-read`, `insert-user-message`). `api/admin/bots/send-message.ts` posts a user message to a bot owned by the session user (zod: `src/schemas/bot-schema.ts`).
 - **Avatars:** `BotStone` (`src/components/general/bot-stone.tsx`) renders the stone inline from `src/data/stone-geometry.ts`, hue as a fill token, face (`idle|working|done|asleep|needs-you`) drawn as eyes. The coordinator is hue-less (ink body, paper eyes; inverts in dark). Never put a stone in a circle/badge or add outline/shadow. Wordmark is vector (`Wordmark`, `src/data/wordmark-paths.ts`), never live text.
 - **Copy helpers:** `src/utils/crew-status.ts` (`3 working · 1 needs you`, "Three bots are working. One needs you."), `src/utils/relative-time.ts` (relative timestamps only).
-- **Not built yet:** add-bot flow, attachments, routines, help, live updates over WebSocket, the model layer.
+- **Prompt and memory (self-learning):** a bot has `system_prompt` (core instructions) and a separate `memory` (markdown, what it must always remember). The bot rewrites both as it adapts to the user (`update-bot-system-prompt`, `update-bot-memory` in `src/functions/backend/db/bots/`; whole-text replace, capped at `AppData.PromptMaxLength`). `grab-bot-prompt` builds the full prompt via `composeBotPrompt` (`src/utils/compose-bot-prompt.ts`): core instructions, then each non-archived workspace's `system_prompt` under `# Workspace: <name>`, then `# Memory`.
+- **Queue:** long-running work (typically on a computer) goes through `bots_queue`, a bun-sqlite `isQueue` table worked with the native `BunSQLite.queue` API (`status` pending|processing|completed|failed, `attempts`, `available_at`, `locked_at`/`locked_by`, `last_error`; options in `AppData.BotQueue*`). Not every message needs a job: the bot replies right away that it's on it and `enqueueBotJob` queues the brief (`instructions`, `params`, optional `message_id`/`computer_id`, the computer checked against the bot's access; a `bot_tasks` row is created for the working-on panel unless `task_id` is given). DB helpers in `src/functions/backend/db/bots-queue/`: `claimBotJobs`, `updateBotJob` (renews the lock, saves `progress`/`checkpoint`; false once lost or cancelled), `completeBotJob` (result message, task done, face done/needs-you), `failBotJob` (backoff retry, or `fatal`; out of attempts posts a needs-you message via `notifyBotJobFailed`), `cancelBotJob` (failed with `BotJobCancelledError`, `src/dict/bot-queue-dict.ts`), `releaseWorkerBotJobs`.
+- **Queue handler:** `src/bots-queue/index.ts`, started from `server.ts` after cron and gated the same way. It releases its own cut-off jobs on startup (stable worker `AppData.BotQueueWorker`), then polls every `BotQueuePollMs`: reports jobs bun-sqlite failed on a lock timeout (`report-lost-bot-jobs`), claims up to `BotQueueConcurrency`, and runs each with `processBotJob` (heartbeat at a quarter of the lock timeout, abort on cancel/loss, one job per computer via `createKeyLock`, face `working` once it starts, outcome pushed live). The actual work is `run-bot-job.ts` (`BotJobRunner`, context in `types.ts`): the model layer plugs in there; until then it throws `BotJobFatalError`. Throw `BotJobFatalError` for failures retrying can't fix. The `prune-bots-queue` cron deletes finished jobs after `BotQueueRetentionDays`.
+- **Live updates:** server push only. `sendToUser` (`src/websocket/(functions)/send-to-user.ts`) sends to one user's sockets; the queue pushes `server:bot-message` and `server:bot-updated`. The client doesn't listen yet.
+- **Workspaces:** `workspaces` (per user, `name`, `description`, `system_prompt` shared by every bot in it, `archived`), with bots assigned through `workspace_bots` and computers through `workspace_computers`. Helpers in `src/functions/backend/db/workspaces/` (`create-workspace`, `update-workspace`, `add/remove-bot-*`, `add/remove-computer-*`), all ownership-checked against the session user.
+- **Computers:** a computer is an AIO sandbox in its own docker container on the `AppData.DockerNetworkName` network. `containers` records every docker container the app knows about except the main app container (`name` doubles as the hostname, plus `docker_id`, `image`, `network`, `port`, `status`, `metadata`). `computers` (per user, `kind` main|sandbox, `container_id`) and `bot_computers` (direct access). Each user has one main computer, recorded with the account (signup, `bun run seed`) and as a fallback by `/admin/bots` via `ensureMainComputer` (`src/functions/backend/db/computers/ensure-main-computer.ts`, idempotent), which also records its container (`AppData.MainComputerContainerName`, created by the installer) and grants the coordinator access. That one grant can't be removed (`isLockedComputerAccess`, enforced in `remove-bot-from-computer` and the `bot_computers` CRUD handler); every other grant can. A bot's effective computers (`grab-bot-computers`) are its direct grants plus every computer assigned to a non-archived workspace it's in. Enums in `src/dict/computer-dict.ts`.
+- **Not built yet:** add-bot flow, attachments, routines, help, client handling of live WebSocket updates, the model layer (plugs into `src/bots-queue/run-bot-job.ts`).
 
 ## Admin Route Hierarchy
 

db/schema.ts

@@ -8,6 +8,12 @@ import {
     BotTaskStatuses,
     BotTaskStepStates,
 } from "@/src/dict/bot-dict";
+import {
+    ComputerKinds,
+    ContainerPurposes,
+    ContainerStatuses,
+} from "@/src/dict/computer-dict";
+import { AppData } from "@/src/data/app-data";
 import type { BUN_SQLITE_DatabaseSchemaType } from "@moduletrace/bun-sqlite/types";
 
 const schema: BUN_SQLITE_DatabaseSchemaType = {
@@ -197,7 +203,7 @@ const schema: BUN_SQLITE_DatabaseSchemaType = {
             fields: [
                 {
                     fieldName: "user_id",
-                    fieldDescription: `Workspace owner`,
+                    fieldDescription: `Bot owner`,
                     dataType: "INTEGER",
                     foreignKey: {
                         cascadeDelete: true,
@@ -213,7 +219,7 @@ const schema: BUN_SQLITE_DatabaseSchemaType = {
                 },
                 {
                     fieldName: "kind",
-                    fieldDescription: `One coordinator per workspace; everything else is a worker`,
+                    fieldDescription: `One coordinator per owner; everything else is a worker`,
                     dataType: "TEXT",
                     options: BotKinds.map((bk) => bk.value),
                     defaultValue: "worker",
@@ -243,7 +249,12 @@ const schema: BUN_SQLITE_DatabaseSchemaType = {
                 },
                 {
                     fieldName: "system_prompt",
-                    fieldDescription: `The bot's core instructions, in markdown`,
+                    fieldDescription: `The bot's core instructions, in markdown. The bot can rewrite it`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "memory",
+                    fieldDescription: `What the bot must always remember, in markdown. The bot keeps it up to date`,
                     dataType: "TEXT",
                 },
                 {
@@ -377,6 +388,391 @@ const schema: BUN_SQLITE_DatabaseSchemaType = {
                 },
             ],
         },
+        {
+            tableName: "bots_queue",
+            isQueue: {
+                maxAttempts: AppData.BotQueueMaxAttempts,
+                lockTimeout: AppData.BotQueueLockTimeoutMs,
+                backoff: AppData.BotQueueBackoffMs,
+            },
+            fields: [
+                {
+                    fieldName: "bot_id",
+                    fieldDescription: `The bot doing the work`,
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "bots",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "bots_queue_bot_fk",
+                    },
+                },
+                {
+                    fieldName: "message_id",
+                    fieldDescription: `The user message that asked for the work, if any`,
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "bot_messages",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "bots_queue_message_fk",
+                    },
+                },
+                {
+                    fieldName: "task_id",
+                    fieldDescription: `The task shown in the working-on panel, if any`,
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "bot_tasks",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "bots_queue_task_fk",
+                    },
+                },
+                {
+                    fieldName: "computer_id",
+                    fieldDescription: `The computer to run on, if any. Checked against the bot's access when queued`,
+                    dataType: "INTEGER",
+                },
+                {
+                    fieldName: "title",
+                    fieldDescription: `Short label for the job`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "instructions",
+                    fieldDescription: `The brief the bot wrote for itself, in markdown`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "params",
+                    fieldDescription: `Structured parameters the handler needs`,
+                    dataType: "TEXT",
+                    json: true,
+                },
+                {
+                    fieldName: "progress",
+                    fieldDescription: `Latest progress note from the bot, in markdown`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "checkpoint",
+                    fieldDescription: `State to resume from if the job is picked up again`,
+                    dataType: "TEXT",
+                    json: true,
+                },
+                {
+                    fieldName: "result",
+                    fieldDescription: `What the bot reported when it finished, in markdown`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "started_at",
+                    fieldDescription: `Unix timestamp of the first claim`,
+                    dataType: "INTEGER",
+                },
+                {
+                    fieldName: "finished_at",
+                    fieldDescription: `Unix timestamp of completion or final failure`,
+                    dataType: "INTEGER",
+                },
+            ],
+            indexes: [
+                {
+                    indexName: "idx_bots_queue_bot_id_status",
+                    indexTableFields: ["bot_id", "status"],
+                },
+            ],
+        },
+        {
+            tableName: "workspaces",
+            fields: [
+                {
+                    fieldName: "user_id",
+                    fieldDescription: `Workspace owner`,
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "users",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "workspace_user_fk",
+                    },
+                },
+                {
+                    fieldName: "name",
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "description",
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "system_prompt",
+                    fieldDescription: `Shared context in markdown, appended to the prompt of every bot in the workspace`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "archived",
+                    dataType: "INTEGER",
+                    options: [0, 1],
+                    defaultValue: 0,
+                },
+            ],
+            indexes: [
+                {
+                    indexName: "idx_workspaces_user_id",
+                    indexTableFields: ["user_id"],
+                },
+            ],
+        },
+        {
+            tableName: "workspace_bots",
+            fields: [
+                {
+                    fieldName: "workspace_id",
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "workspaces",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "workspace_bot_workspace_fk",
+                    },
+                },
+                {
+                    fieldName: "bot_id",
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "bots",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "workspace_bot_bot_fk",
+                    },
+                },
+            ],
+            uniqueConstraints: [
+                {
+                    alias: "one_bot_per_workspace",
+                    constraintName: "A bot joins a workspace once",
+                    constraintTableFields: [
+                        { value: "workspace_id" },
+                        { value: "bot_id" },
+                    ],
+                },
+            ],
+            indexes: [
+                {
+                    indexName: "idx_workspace_bots_bot_id",
+                    indexTableFields: ["bot_id"],
+                },
+            ],
+        },
+        {
+            tableName: "containers",
+            fields: [
+                {
+                    fieldName: "name",
+                    fieldDescription: `Docker container name, also its hostname on the network`,
+                    dataType: "TEXT",
+                    unique: true,
+                },
+                {
+                    fieldName: "docker_id",
+                    fieldDescription: `Docker container id, once known`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "purpose",
+                    dataType: "TEXT",
+                    options: ContainerPurposes.map((cp) => cp.value),
+                    defaultValue: "computer",
+                },
+                {
+                    fieldName: "image",
+                    fieldDescription: `Image the container runs, e.g. ghcr.io/agent-infra/sandbox:latest`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "network",
+                    fieldDescription: `Docker network shared with the main container`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "hostname",
+                    fieldDescription: `Address the main container reaches it on`,
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "port",
+                    fieldDescription: `Port the service listens on inside the container`,
+                    dataType: "INTEGER",
+                },
+                {
+                    fieldName: "status",
+                    fieldDescription: `Last known docker state`,
+                    dataType: "TEXT",
+                    options: ContainerStatuses.map((cs) => cs.value),
+                    defaultValue: "unknown",
+                },
+                {
+                    fieldName: "metadata",
+                    fieldDescription: `Extra docker details (ports, volumes, env names, labels)`,
+                    dataType: "TEXT",
+                    json: true,
+                },
+                {
+                    fieldName: "last_seen_at",
+                    fieldDescription: `Unix timestamp of the last docker inspect`,
+                    dataType: "INTEGER",
+                },
+            ],
+        },
+        {
+            tableName: "computers",
+            fields: [
+                {
+                    fieldName: "user_id",
+                    fieldDescription: `Computer owner`,
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "users",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "computer_user_fk",
+                    },
+                },
+                {
+                    fieldName: "container_id",
+                    fieldDescription: `The container this computer runs in`,
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "containers",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "computer_container_fk",
+                    },
+                },
+                {
+                    fieldName: "name",
+                    dataType: "TEXT",
+                },
+                {
+                    fieldName: "kind",
+                    fieldDescription: `One main computer per owner; everything else is a sandbox`,
+                    dataType: "TEXT",
+                    options: ComputerKinds.map((ck) => ck.value),
+                    defaultValue: "sandbox",
+                },
+                {
+                    fieldName: "description",
+                    dataType: "TEXT",
+                },
+            ],
+            indexes: [
+                {
+                    indexName: "idx_computers_user_id_kind",
+                    indexTableFields: ["user_id", "kind"],
+                },
+                {
+                    indexName: "idx_computers_container_id",
+                    indexTableFields: ["container_id"],
+                },
+            ],
+        },
+        {
+            tableName: "bot_computers",
+            fields: [
+                {
+                    fieldName: "bot_id",
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "bots",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "bot_computer_bot_fk",
+                    },
+                },
+                {
+                    fieldName: "computer_id",
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "computers",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "bot_computer_computer_fk",
+                    },
+                },
+            ],
+            uniqueConstraints: [
+                {
+                    alias: "one_access_per_bot_computer",
+                    constraintName: "A bot gets access to a computer once",
+                    constraintTableFields: [
+                        { value: "bot_id" },
+                        { value: "computer_id" },
+                    ],
+                },
+            ],
+            indexes: [
+                {
+                    indexName: "idx_bot_computers_computer_id",
+                    indexTableFields: ["computer_id"],
+                },
+            ],
+        },
+        {
+            tableName: "workspace_computers",
+            fields: [
+                {
+                    fieldName: "workspace_id",
+                    fieldDescription: `Every bot in this workspace gets access to the computer`,
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "workspaces",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "workspace_computer_workspace_fk",
+                    },
+                },
+                {
+                    fieldName: "computer_id",
+                    dataType: "INTEGER",
+                    foreignKey: {
+                        cascadeDelete: true,
+                        destinationTableName: "computers",
+                        destinationTableColumnName: "id",
+                        destinationTableColumnType: "INTEGER",
+                        foreignKeyName: "workspace_computer_computer_fk",
+                    },
+                },
+            ],
+            uniqueConstraints: [
+                {
+                    alias: "one_computer_per_workspace",
+                    constraintName: "A computer joins a workspace once",
+                    constraintTableFields: [
+                        { value: "workspace_id" },
+                        { value: "computer_id" },
+                    ],
+                },
+            ],
+            indexes: [
+                {
+                    indexName: "idx_workspace_computers_computer_id",
+                    indexTableFields: ["computer_id"],
+                },
+            ],
+        },
         {
             tableName: "logs",
             fields: [

db/types/db.ts

@@ -9,6 +9,13 @@ export const BunSQLiteTables = [
     "bot_messages",
     "bot_tasks",
     "bot_task_steps",
+    "bots_queue",
+    "workspaces",
+    "workspace_bots",
+    "containers",
+    "computers",
+    "bot_computers",
+    "workspace_computers",
     "logs",
 ] as const
 
@@ -143,12 +150,12 @@ export type BUN_SQLITE_COBBLE_BOTS = {
      */
     updated_at?: number | "";
     /** 
-     * Workspace owner
+     * Bot owner
      */
     user_id?: number | "";
     name?: string;
     /** 
-     * One coordinator per workspace; everything else is a worker
+     * One coordinator per owner; everything else is a worker
      */
     kind?: "worker" | "coordinator" | "";
     /** 
@@ -168,9 +175,13 @@ export type BUN_SQLITE_COBBLE_BOTS = {
      */
     status_line?: string;
     /** 
-     * The bot's core instructions, in markdown
+     * The bot's core instructions, in markdown. The bot can rewrite it
      */
     system_prompt?: string;
+    /** 
+     * What the bot must always remember, in markdown. The bot keeps it up to date
+     */
+    memory?: string;
     unread?: 0 | 1 | "";
     /** 
      * Unix timestamp of the latest message, for rail ordering
@@ -241,6 +252,254 @@ export type BUN_SQLITE_COBBLE_BOT_TASK_STEPS = {
     position?: number | "";
 }
 
+export type BUN_SQLITE_COBBLE_BOTS_QUEUE = {
+    /** 
+     * The unique identifier of the record.
+     */
+    id?: number | "";
+    /** 
+     * The time when the record was created. (Unix Timestamp)
+     */
+    created_at?: number | "";
+    /** 
+     * The time when the record was updated. (Unix Timestamp)
+     */
+    updated_at?: number | "";
+    /** 
+     * The bot doing the work
+     */
+    bot_id?: number | "";
+    /** 
+     * The user message that asked for the work, if any
+     */
+    message_id?: number | "";
+    /** 
+     * The task shown in the working-on panel, if any
+     */
+    task_id?: number | "";
+    /** 
+     * The computer to run on, if any. Checked against the bot's access when queued
+     */
+    computer_id?: number | "";
+    /** 
+     * Short label for the job
+     */
+    title?: string;
+    /** 
+     * The brief the bot wrote for itself, in markdown
+     */
+    instructions?: string;
+    /** 
+     * Structured parameters the handler needs
+     */
+    params?: string;
+    /** 
+     * Latest progress note from the bot, in markdown
+     */
+    progress?: string;
+    /** 
+     * State to resume from if the job is picked up again
+     */
+    checkpoint?: string;
+    /** 
+     * What the bot reported when it finished, in markdown
+     */
+    result?: string;
+    /** 
+     * Unix timestamp of the first claim
+     */
+    started_at?: number | "";
+    /** 
+     * Unix timestamp of completion or final failure
+     */
+    finished_at?: number | "";
+    /** 
+     * The state of the job. (pending | processing | completed | failed)
+     */
+    status?: string;
+    /** 
+     * The number of times the job has been claimed.
+     */
+    attempts?: number | "";
+    /** 
+     * The time from which the job can be claimed. (Unix Timestamp)
+     */
+    available_at?: number | "";
+    /** 
+     * The time when the job was claimed. (Unix Timestamp)
+     */
+    locked_at?: number | "";
+    /** 
+     * The worker that claimed the job.
+     */
+    locked_by?: string;
+    /** 
+     * The error from the last failed attempt.
+     */
+    last_error?: string;
+}
+
+export type BUN_SQLITE_COBBLE_WORKSPACES = {
+    /** 
+     * The unique identifier of the record.
+     */
+    id?: number | "";
+    /** 
+     * The time when the record was created. (Unix Timestamp)
+     */
+    created_at?: number | "";
+    /** 
+     * The time when the record was updated. (Unix Timestamp)
+     */
+    updated_at?: number | "";
+    /** 
+     * Workspace owner
+     */
+    user_id?: number | "";
+    name?: string;
+    description?: string;
+    /** 
+     * Shared context in markdown, appended to the prompt of every bot in the workspace
+     */
+    system_prompt?: string;
+    archived?: 0 | 1 | "";
+}
+
+export type BUN_SQLITE_COBBLE_WORKSPACE_BOTS = {
+    /** 
+     * The unique identifier of the record.
+     */
+    id?: number | "";
+    /** 
+     * The time when the record was created. (Unix Timestamp)
+     */
+    created_at?: number | "";
+    /** 
+     * The time when the record was updated. (Unix Timestamp)
+     */
+    updated_at?: number | "";
+    workspace_id?: number | "";
+    bot_id?: number | "";
+}
+
+export type BUN_SQLITE_COBBLE_CONTAINERS = {
+    /** 
+     * The unique identifier of the record.
+     */
+    id?: number | "";
+    /** 
+     * The time when the record was created. (Unix Timestamp)
+     */
+    created_at?: number | "";
+    /** 
+     * The time when the record was updated. (Unix Timestamp)
+     */
+    updated_at?: number | "";
+    /** 
+     * Docker container name, also its hostname on the network
+     */
+    name?: string;
+    /** 
+     * Docker container id, once known
+     */
+    docker_id?: string;
+    purpose?: "computer" | "";
+    /** 
+     * Image the container runs, e.g. ghcr.io/agent-infra/sandbox:latest
+     */
+    image?: string;
+    /** 
+     * Docker network shared with the main container
+     */
+    network?: string;
+    /** 
+     * Address the main container reaches it on
+     */
+    hostname?: string;
+    /** 
+     * Port the service listens on inside the container
+     */
+    port?: number | "";
+    /** 
+     * Last known docker state
+     */
+    status?: "created" | "running" | "paused" | "restarting" | "exited" | "removing" | "dead" | "unknown" | "";
+    /** 
+     * Extra docker details (ports, volumes, env names, labels)
+     */
+    metadata?: string;
+    /** 
+     * Unix timestamp of the last docker inspect
+     */
+    last_seen_at?: number | "";
+}
+
+export type BUN_SQLITE_COBBLE_COMPUTERS = {
+    /** 
+     * The unique identifier of the record.
+     */
+    id?: number | "";
+    /** 
+     * The time when the record was created. (Unix Timestamp)
+     */
+    created_at?: number | "";
+    /** 
+     * The time when the record was updated. (Unix Timestamp)
+     */
+    updated_at?: number | "";
+    /** 
+     * Computer owner
+     */
+    user_id?: number | "";
+    /** 
+     * The container this computer runs in
+     */
+    container_id?: number | "";
+    name?: string;
+    /** 
+     * One main computer per owner; everything else is a sandbox
+     */
+    kind?: "main" | "sandbox" | "";
+    description?: string;
+}
+
+export type BUN_SQLITE_COBBLE_BOT_COMPUTERS = {
+    /** 
+     * The unique identifier of the record.
+     */
+    id?: number | "";
+    /** 
+     * The time when the record was created. (Unix Timestamp)
+     */
+    created_at?: number | "";
+    /** 
+     * The time when the record was updated. (Unix Timestamp)
+     */
+    updated_at?: number | "";
+    bot_id?: number | "";
+    computer_id?: number | "";
+}
+
+export type BUN_SQLITE_COBBLE_WORKSPACE_COMPUTERS = {
+    /** 
+     * The unique identifier of the record.
+     */
+    id?: number | "";
+    /** 
+     * The time when the record was created. (Unix Timestamp)
+     */
+    created_at?: number | "";
+    /** 
+     * The time when the record was updated. (Unix Timestamp)
+     */
+    updated_at?: number | "";
+    /** 
+     * Every bot in this workspace gets access to the computer
+     */
+    workspace_id?: number | "";
+    computer_id?: number | "";
+}
+
 export type BUN_SQLITE_COBBLE_LOGS = {
     /** 
      * The unique identifier of the record.
@@ -288,4 +547,4 @@ export type BUN_SQLITE_COBBLE_LOGS = {
     ip_address?: string;
 }
 
-export type BUN_SQLITE_COBBLE_ALL_TYPEDEFS = BUN_SQLITE_COBBLE_USERS & BUN_SQLITE_COBBLE_USER_TYPES & BUN_SQLITE_COBBLE_SSO_LOGIN_CODES & BUN_SQLITE_COBBLE_USER_PASSWORDS & BUN_SQLITE_COBBLE_MEDIA & BUN_SQLITE_COBBLE_MEDIA_PARADIGMS & BUN_SQLITE_COBBLE_BOTS & BUN_SQLITE_COBBLE_BOT_MESSAGES & BUN_SQLITE_COBBLE_BOT_TASKS & BUN_SQLITE_COBBLE_BOT_TASK_STEPS & BUN_SQLITE_COBBLE_LOGS
+export type BUN_SQLITE_COBBLE_ALL_TYPEDEFS = BUN_SQLITE_COBBLE_USERS & BUN_SQLITE_COBBLE_USER_TYPES & BUN_SQLITE_COBBLE_SSO_LOGIN_CODES & BUN_SQLITE_COBBLE_USER_PASSWORDS & BUN_SQLITE_COBBLE_MEDIA & BUN_SQLITE_COBBLE_MEDIA_PARADIGMS & BUN_SQLITE_COBBLE_BOTS & BUN_SQLITE_COBBLE_BOT_MESSAGES & BUN_SQLITE_COBBLE_BOT_TASKS & BUN_SQLITE_COBBLE_BOT_TASK_STEPS & BUN_SQLITE_COBBLE_BOTS_QUEUE & BUN_SQLITE_COBBLE_WORKSPACES & BUN_SQLITE_COBBLE_WORKSPACE_BOTS & BUN_SQLITE_COBBLE_CONTAINERS & BUN_SQLITE_COBBLE_COMPUTERS & BUN_SQLITE_COBBLE_BOT_COMPUTERS & BUN_SQLITE_COBBLE_WORKSPACE_COMPUTERS & BUN_SQLITE_COBBLE_LOGS

src/bots-queue/bot-job-fatal-error.ts

@@ -0,0 +1,10 @@
+/**
+ * Throw from a job runner when retrying can't help (bad parameters, no
+ * access). The job fails at once instead of using its remaining attempts.
+ */
+export default class BotJobFatalError extends Error {
+    constructor(message: string) {
+        super(message);
+        this.name = "BotJobFatalError";
+    }
+}

src/bots-queue/index.ts

@@ -0,0 +1,65 @@
+import bunext from "@moduletrace/bunext";
+import { AppData } from "@/src/data/app-data";
+import claimBotJobs from "@/src/functions/backend/db/bots-queue/claim-bot-jobs";
+import releaseWorkerBotJobs from "@/src/functions/backend/db/bots-queue/release-worker-bot-jobs";
+import { logError } from "@/src/functions/backend/logger";
+import processBotJob from "./process-bot-job";
+import reportLostBotJobs from "./report-lost-bot-jobs";
+
+const worker = AppData.BotQueueWorker;
+let running = 0;
+
+/**
+ * Starts the `bots_queue` handler: releases jobs a restart cut off, then
+ * polls every `AppData.BotQueuePollMs`, reporting lost jobs and claiming
+ * up to `AppData.BotQueueConcurrency` at once. Gated in production to the
+ * `MAIN_SERVER` container, like cron.
+ */
+export default async function botsQueue() {
+    if (process.env.NODE_ENV == "production" && !process.env.MAIN_SERVER) {
+        return;
+    }
+
+    bunext.bunextLog.watch(`Running Bots Queue ...`);
+
+    const released = await releaseWorkerBotJobs({ worker });
+
+    if (released) {
+        bunext.bunextLog.info(`Bots queue: released ${released} cut-off job(s)`);
+    }
+
+    poll();
+}
+
+async function poll() {
+    try {
+        await reportLostBotJobs();
+
+        const free = AppData.BotQueueConcurrency - running;
+
+        if (free > 0) {
+            const jobs = await claimBotJobs({ worker, limit: free });
+
+            for (const job of jobs) {
+                running++;
+
+                processBotJob({ job, worker })
+                    .catch((error) =>
+                        logError({
+                            title: `Bot job #${job.id} crashed`,
+                            error,
+                        }).catch(() => {}),
+                    )
+                    .finally(() => {
+                        running--;
+                    });
+            }
+        }
+    } catch (error) {
+        await logError({ title: "Bots queue poll failed", error }).catch(
+            () => {},
+        );
+    } finally {
+        setTimeout(poll, AppData.BotQueuePollMs);
+    }
+}

src/bots-queue/parse-job-json.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, test } from "bun:test";
+import parseJobJson from "./parse-job-json";
+
+describe("parseJobJson", () => {
+    test("reads a JSON object", () => {
+        expect(parseJobJson({ text: `{"step":2}` })).toEqual({ step: 2 });
+    });
+
+    test("is null for empty, invalid or non-object JSON", () => {
+        expect(parseJobJson({})).toBeNull();
+        expect(parseJobJson({ text: "" })).toBeNull();
+        expect(parseJobJson({ text: "{nope" })).toBeNull();
+        expect(parseJobJson({ text: "[1]" })).toBeNull();
+        expect(parseJobJson({ text: "3" })).toBeNull();
+    });
+});

src/bots-queue/parse-job-json.ts

@@ -0,0 +1,22 @@
+type Params = {
+    text?: string | null;
+};
+
+/**
+ * Reads a job's `params` or `checkpoint` column. Null when empty or not a
+ * JSON object.
+ */
+export default function parseJobJson({
+    text,
+}: Params): Record<string, unknown> | null {
+    if (!text) return null;
+
+    try {
+        const value = JSON.parse(text);
+        return value && typeof value == "object" && !Array.isArray(value)
+            ? value
+            : null;
+    } catch {
+        return null;
+    }
+}

src/bots-queue/process-bot-job.ts

@@ -0,0 +1,126 @@
+import type { BUN_SQLITE_COBBLE_BOTS_QUEUE } from "@/db/types/db";
+import { AppData } from "@/src/data/app-data";
+import setBotFace from "@/src/functions/backend/db/bots/set-bot-face";
+import completeBotJob from "@/src/functions/backend/db/bots-queue/complete-bot-job";
+import failBotJob from "@/src/functions/backend/db/bots-queue/fail-bot-job";
+import updateBotJob from "@/src/functions/backend/db/bots-queue/update-bot-job";
+import { logError } from "@/src/functions/backend/logger";
+import createKeyLock from "@/src/utils/create-key-lock";
+import BotJobFatalError from "./bot-job-fatal-error";
+import pushBotNotice from "./push-bot-notice";
+import runBotJob from "./run-bot-job";
+import parseJobJson from "./parse-job-json";
+import type { BotJobContext, BotJobRunner } from "./types";
+
+/**
+ * One job per computer at a time, across all running jobs.
+ */
+const computer_lock = createKeyLock();
+
+/**
+ * Renew the lock well inside the timeout, so one slow write can't lose it.
+ */
+const HEARTBEAT_MS = Math.floor(AppData.BotQueueLockTimeoutMs / 4);
+
+type Params = {
+    job: BUN_SQLITE_COBBLE_BOTS_QUEUE;
+    worker: string;
+    /**
+     * Defaults to `runBotJob`.
+     */
+    runner?: BotJobRunner;
+};
+
+/**
+ * Runs one claimed job to the end: keeps its lock alive, waits for its
+ * computer, runs it, then completes or fails it and pushes the outcome to
+ * the user. If the job is cancelled or lost mid-way, its result is
+ * dropped.
+ */
+export default async function processBotJob({
+    job,
+    worker,
+    runner = runBotJob,
+}: Params) {
+    if (!job.id || !job.bot_id) return;
+
+    const job_id = job.id;
+    const bot_id = job.bot_id;
+    const controller = new AbortController();
+
+    const update: BotJobContext["update"] = async (params) => {
+        if (controller.signal.aborted) return false;
+
+        const held = await updateBotJob({ job_id, worker, ...params });
+
+        if (!held) controller.abort();
+
+        return held;
+    };
+
+    const heartbeat = setInterval(() => {
+        update({}).catch(() => {});
+    }, HEARTBEAT_MS);
+
+    try {
+        /**
+         * The face changes once the job really starts, after any wait for
+         * its computer.
+         */
+        const run = async () => {
+            await pushBotNotice({
+                bot_id,
+                bot: await setBotFace({
+                    bot_id,
+                    face: "working",
+                    status_line: job.title || "",
+                }),
+            });
+
+            return await runner({
+                job,
+                params: parseJobJson({ text: job.params }) || {},
+                checkpoint: parseJobJson({ text: job.checkpoint }),
+                signal: controller.signal,
+                update,
+            });
+        };
+
+        const outcome = job.computer_id
+            ? await computer_lock.run({ key: job.computer_id, task: run })
+            : await run();
+
+        if (controller.signal.aborted) return;
+
+        await pushBotNotice({
+            bot_id,
+            ...(await completeBotJob({
+                job_id,
+                worker,
+                result: outcome.result,
+                needs_you: outcome.needs_you,
+            })),
+        });
+    } catch (error: unknown) {
+        if (controller.signal.aborted) return;
+
+        const failed = await failBotJob({
+            job_id,
+            worker,
+            error: error instanceof Error ? error.message : String(error),
+            fatal: error instanceof BotJobFatalError,
+        }).catch(async (fail_error) => {
+            await logError({
+                title: `Bot job #${job_id} couldn't be failed`,
+                error: fail_error,
+            }).catch(() => {});
+            return null;
+        });
+
+        if (failed?.notice) {
+            await pushBotNotice({ bot_id, ...failed.notice });
+        }
+    } finally {
+        clearInterval(heartbeat);
+    }
+}

src/bots-queue/push-bot-notice.ts

@@ -0,0 +1,30 @@
+import type {
+    BUN_SQLITE_COBBLE_BOT_MESSAGES,
+    BUN_SQLITE_COBBLE_BOTS,
+} from "@/db/types/db";
+import pushToBotOwner from "./push-to-bot-owner";
+
+type Params = {
+    bot_id: number | string;
+    message?: BUN_SQLITE_COBBLE_BOT_MESSAGES | null;
+    bot?: Pick<BUN_SQLITE_COBBLE_BOTS, "id" | "face" | "status_line"> | null;
+};
+
+/**
+ * Pushes a new bot message and/or face change to the owner's open tabs.
+ */
+export default async function pushBotNotice({ bot_id, message, bot }: Params) {
+    if (message) {
+        await pushToBotOwner({
+            bot_id,
+            data: { event: "server:bot-message", data: message },
+        });
+    }
+
+    if (bot) {
+        await pushToBotOwner({
+            bot_id,
+            data: { event: "server:bot-updated", data: bot },
+        });
+    }
+}

src/bots-queue/push-to-bot-owner.ts

@@ -0,0 +1,26 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BUN_SQLITE_COBBLE_BOTS } from "@/db/types/db";
+import type { WebSocketDataType } from "@/src/types";
+import { sendToUser } from "@/src/websocket/(functions)/send-to-user";
+
+type Params = {
+    bot_id: number | string;
+    data: WebSocketDataType;
+};
+
+/**
+ * Live update to the bot owner's open tabs. Best effort: nothing is queued
+ * for offline users, who see the change on their next page load.
+ */
+export default async function pushToBotOwner({ bot_id, data }: Params) {
+    const bot = (
+        await BunSQLite.sql<BUN_SQLITE_COBBLE_BOTS>({
+            sql: `SELECT user_id FROM bots WHERE id = ? LIMIT 1`,
+            values: [bot_id],
+        })
+    ).payload?.[0];
+
+    if (!bot?.user_id) return;
+
+    sendToUser({ user_id: bot.user_id, data });
+}

src/bots-queue/report-lost-bot-jobs.ts

@@ -0,0 +1,22 @@
+import grabUnreportedFailedBotJobs from "@/src/functions/backend/db/bots-queue/grab-unreported-failed-bot-jobs";
+import notifyBotJobFailed from "@/src/functions/backend/db/bots-queue/notify-bot-job-failed";
+import pushBotNotice from "./push-bot-notice";
+
+/**
+ * Tells the user about jobs that ran out of attempts by going silent
+ * (bun-sqlite fails those itself, without a message).
+ */
+export default async function reportLostBotJobs() {
+    const jobs = await grabUnreportedFailedBotJobs();
+
+    for (const job of jobs) {
+        if (!job.bot_id) continue;
+
+        const notice = await notifyBotJobFailed({
+            job,
+            failure_message: `I lost track of "${job.title || "the job"}" and couldn't finish it.`,
+        });
+
+        await pushBotNotice({ bot_id: job.bot_id, ...notice });
+    }
+}

src/bots-queue/run-bot-job.ts

@@ -0,0 +1,14 @@
+import type { BotJobRunner } from "./types";
+import BotJobFatalError from "./bot-job-fatal-error";
+
+/**
+ * Does a job's actual work: the bot follows `job.instructions` with its
+ * full prompt (`grabBotPrompt`), on `job.computer_id` if set, and returns
+ * the message for the user. This is where the model layer plugs in; until
+ * it exists every job fails at once and the user is told.
+ */
+const runBotJob: BotJobRunner = async () => {
+    throw new BotJobFatalError(`Bots can't run queued work yet.`);
+};
+
+export default runBotJob;

src/bots-queue/types.ts

@@ -0,0 +1,34 @@
+import type { BUN_SQLITE_COBBLE_BOTS_QUEUE } from "@/db/types/db";
+
+export type BotJobContext = {
+    job: BUN_SQLITE_COBBLE_BOTS_QUEUE;
+    params: Record<string, unknown>;
+    /**
+     * Saved by an earlier attempt, if the job was picked up again.
+     */
+    checkpoint: Record<string, unknown> | null;
+    /**
+     * Aborted when the job is cancelled or lost to another handler. Stop
+     * work and return; the result is discarded.
+     */
+    signal: AbortSignal;
+    /**
+     * Save progress and a checkpoint. The lock is renewed on a timer
+     * already, so call this for meaningful steps. False once the job is
+     * cancelled or lost.
+     */
+    update: (params: {
+        progress?: string;
+        checkpoint?: Record<string, unknown>;
+    }) => Promise<boolean>;
+};
+
+export type BotJobOutcome = {
+    /**
+     * The completion message for the user (markdown).
+     */
+    result: string;
+    needs_you?: boolean;
+};
+
+export type BotJobRunner = (context: BotJobContext) => Promise<BotJobOutcome>;

src/cron/index.ts

@@ -1,5 +1,6 @@
 import bunext from "@moduletrace/bunext";
 import cronHeartbeat from "./heartbeat";
+import pruneBotsQueue from "./prune-bots-queue";
 import registerCronJob from "./register-cron-job";
 
 export default function cron() {
@@ -15,4 +16,10 @@ export default function cron() {
         task: cronHeartbeat,
         run_on_start: true,
     });
+
+    registerCronJob({
+        title: "prune-bots-queue",
+        schedule: "@daily",
+        task: pruneBotsQueue,
+    });
 }

src/cron/prune-bots-queue/index.ts

@@ -0,0 +1,23 @@
+import bunext from "@moduletrace/bunext";
+import BunSQLite from "@moduletrace/bun-sqlite";
+import { AppData } from "@/src/data/app-data";
+
+/**
+ * Deletes finished jobs (completed, failed or cancelled) older than
+ * `AppData.BotQueueRetentionDays`. Their messages stay in the conversation.
+ */
+export default async function pruneBotsQueue() {
+    const cutoff =
+        Date.now() - AppData.BotQueueRetentionDays * 24 * 60 * 60 * 1000;
+
+    const res = await BunSQLite.sql({
+        sql: `DELETE FROM bots_queue WHERE status IN ('completed', 'failed') AND finished_at IS NOT NULL AND finished_at < ? RETURNING id`,
+        values: [cutoff],
+    });
+
+    bunext.bunextLog.info(
+        `Cron: pruned ${res.payload?.length || 0} finished bot job(s)`,
+    );
+
+    return res;
+}

src/data/app-data.ts

@@ -26,4 +26,41 @@ export const AppData = {
     PasswordMinLength: 8,
     PasswordMaxLength: 128,
     PasswordAttemptLimit: 10,
+    /**
+     * Docker network shared by the main container and every computer. The
+     * installer creates it, and the main computer's container on it.
+     */
+    DockerNetworkName: SiteData["SiteSlug"],
+    MainComputerContainerName: `${SiteData["SiteSlug"]}-computer`,
+    /**
+     * Port the AIO sandbox listens on inside its container.
+     */
+    ComputerPort: 8080,
+    /**
+     * Cap on a bot's `system_prompt` and `memory`, and on a workspace's
+     * `system_prompt`, so self-updates can't grow a prompt without bound.
+     */
+    PromptMaxLength: 20000,
+    /**
+     * `bots_queue` (bun-sqlite `isQueue`). A job that hasn't sent an update
+     * within the lock timeout is presumed lost and goes back to the queue,
+     * so long computer jobs must call `updateBotJob` more often than this.
+     */
+    BotQueueMaxAttempts: 3,
+    BotQueueLockTimeoutMs: 10 * 60 * 1000,
+    BotQueueBackoffMs: 30 * 1000,
+    /**
+     * The queue handler's lock name. Stable across restarts, so on startup
+     * it can release the jobs it was running when the process stopped.
+     */
+    BotQueueWorker: "main",
+    BotQueuePollMs: 3000,
+    /**
+     * Jobs run at once. Jobs on the same computer always run one at a time.
+     */
+    BotQueueConcurrency: 3,
+    /**
+     * Finished jobs are deleted after this many days.
+     */
+    BotQueueRetentionDays: 30,
 } as const;

src/data/coordinator-system-prompt.ts

@@ -2,8 +2,8 @@ import { SiteData } from "./site-data";
 
 /**
  * The coordinator's default core instructions (markdown), attached when the
- * coordinator is created. Stored per bot in `bots.system_prompt`, so a
+ * coordinator is created. Stored per bot in `bots.system_prompt`, so each
- * workspace can edit its own copy without touching this default.
+ * coordinator can edit its own copy without touching this default.
  */
 export const CoordinatorSystemPrompt = `# You are the Coordinator
 

src/dict/bot-dict.ts

@@ -49,7 +49,7 @@ export const BotKinds = [
 export type BotKind = (typeof BotKinds)[number]["value"];
 
 /**
- * Every workspace has exactly one coordinator, created with the account. It
+ * Every user has exactly one coordinator, created with the account. It
  * coordinates the crew and hands work to the other bots.
  */
 export const CoordinatorBotName = "Coordinator";

src/dict/bot-queue-dict.ts

@@ -0,0 +1,11 @@
+/**
+ * `last_error` of a job the user cancelled. Cancelled jobs are `failed`
+ * (bun-sqlite queues have no cancelled status) with this error.
+ */
+export const BotJobCancelledError = "Cancelled";
+
+/**
+ * `last_error` bun-sqlite sets when it releases a job whose handler went
+ * silent past the lock timeout on its last attempt.
+ */
+export const BotJobLockTimedOutError = "Lock timed out";

src/dict/computer-dict.ts

@@ -0,0 +1,72 @@
+/**
+ * A computer is an AIO sandbox running in its own docker container on the
+ * cobble network. The main computer is set up at install and recorded on
+ * signup; sandboxes are created later by the main container.
+ */
+export const ComputerKinds = [
+    {
+        title: "Main",
+        value: "main",
+    },
+    {
+        title: "Sandbox",
+        value: "sandbox",
+    },
+] as const;
+
+export type ComputerKind = (typeof ComputerKinds)[number]["value"];
+
+export const MainComputerName = "Main computer";
+
+/**
+ * Docker container state as reported by `docker inspect` (`State.Status`),
+ * plus `unknown` for a record that hasn't been inspected yet.
+ */
+export const ContainerStatuses = [
+    {
+        title: "Created",
+        value: "created",
+    },
+    {
+        title: "Running",
+        value: "running",
+    },
+    {
+        title: "Paused",
+        value: "paused",
+    },
+    {
+        title: "Restarting",
+        value: "restarting",
+    },
+    {
+        title: "Exited",
+        value: "exited",
+    },
+    {
+        title: "Removing",
+        value: "removing",
+    },
+    {
+        title: "Dead",
+        value: "dead",
+    },
+    {
+        title: "Unknown",
+        value: "unknown",
+    },
+] as const;
+
+export type ContainerStatus = (typeof ContainerStatuses)[number]["value"];
+
+/**
+ * What a recorded container is for. The main app container is never recorded.
+ */
+export const ContainerPurposes = [
+    {
+        title: "Computer",
+        value: "computer",
+    },
+] as const;
+
+export type ContainerPurpose = (typeof ContainerPurposes)[number]["value"];

src/functions/backend/db/bots-queue/cancel-bot-job.ts

@@ -0,0 +1,41 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BUN_SQLITE_COBBLE_BOTS_QUEUE } from "@/db/types/db";
+import { BotJobCancelledError } from "@/src/dict/bot-queue-dict";
+import AppError from "@/src/utils/app-error";
+
+type Params = {
+    user_id: number | string;
+    job_id: number | string;
+};
+
+/**
+ * Cancels one of the user's pending or running jobs. It's marked failed
+ * with `BotJobCancelledError`; a running handler finds out on its next
+ * `updateBotJob` (which returns false) and stops. Its task is closed.
+ */
+export default async function cancelBotJob({ user_id, job_id }: Params) {
+    const now = Date.now();
+
+    const res = await BunSQLite.sql<BUN_SQLITE_COBBLE_BOTS_QUEUE>({
+        sql: `UPDATE bots_queue SET status = 'failed', last_error = ?, locked_at = NULL, locked_by = NULL, finished_at = ?, updated_at = ?
+            WHERE id = ? AND status IN ('pending', 'processing')
+            AND bot_id IN (SELECT id FROM bots WHERE user_id = ?)
+            RETURNING *`,
+        values: [BotJobCancelledError, now, now, job_id, user_id],
+    });
+
+    const job = res.payload?.[0];
+
+    if (!job?.id) {
+        throw new AppError(`No pending or running job to cancel.`);
+    }
+
+    if (job.task_id) {
+        await BunSQLite.sql({
+            sql: `UPDATE bot_tasks SET status = 'done', updated_at = ? WHERE id = ?`,
+            values: [now, job.task_id],
+        });
+    }
+
+    return job;
+}

src/functions/backend/db/bots-queue/claim-bot-jobs.ts

@@ -0,0 +1,51 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type {
+    BUN_SQLITE_COBBLE_BOTS_QUEUE,
+    BunSQLiteTables,
+} from "@/db/types/db";
+
+type Params = {
+    /**
+     * Unique id of the handler claiming, e.g. `main:<pid>`. Every later
+     * update, completion or failure must pass the same id.
+     */
+    worker: string;
+    limit?: number;
+};
+
+/**
+ * Claims the next pending jobs for a queue handler. Jobs whose handler
+ * stopped sending updates are released back to the queue first, so a lost
+ * job is picked up again (resume from its `checkpoint`).
+ */
+export default async function claimBotJobs({ worker, limit = 1 }: Params) {
+    const res = await BunSQLite.queue.claim<
+        BUN_SQLITE_COBBLE_BOTS_QUEUE,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "bots_queue",
+        worker,
+        limit,
+    });
+
+    if (!res.success) {
+        throw new Error(`Couldn't claim jobs: ${res.msg || res.error}`);
+    }
+
+    const jobs = res.payload || [];
+
+    for (const job of jobs) {
+        if (job.id && !job.started_at) {
+            const now = Date.now();
+
+            await BunSQLite.sql({
+                sql: `UPDATE bots_queue SET started_at = ? WHERE id = ?`,
+                values: [now, job.id],
+            });
+
+            job.started_at = now;
+        }
+    }
+
+    return jobs;
+}

src/functions/backend/db/bots-queue/complete-bot-job.ts

@@ -0,0 +1,80 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import insertBotMessage from "../bots/insert-bot-message";
+import setBotFace from "../bots/set-bot-face";
+import countOpenBotJobs from "./count-open-bot-jobs";
+import grabLockedBotJob from "./grab-locked-bot-job";
+
+type Params = {
+    job_id: number | string;
+    worker: string;
+    /**
+     * The completion message for the user (markdown). Also kept as the
+     * job's `result`.
+     */
+    result: string;
+    /**
+     * Flag the message as needing the user.
+     */
+    needs_you?: boolean;
+};
+
+/**
+ * Marks a job done, closes its task and sends the completion message back
+ * to the user in the bot's conversation. The bot shows done (or needs-you)
+ * unless it has other jobs open. Throws if this handler no longer holds
+ * the job.
+ */
+export default async function completeBotJob({
+    job_id,
+    worker,
+    result,
+    needs_you,
+}: Params) {
+    const job = await grabLockedBotJob({ job_id, worker });
+
+    if (!job?.id || !job.bot_id) {
+        throw new AppError(`This job is no longer held by ${worker}.`);
+    }
+
+    const res = await BunSQLite.queue.complete({
+        table: "bots_queue",
+        id: job.id,
+    });
+
+    if (!res.success) {
+        throw new Error(`Couldn't complete the job: ${res.msg || res.error}`);
+    }
+
+    const now = Date.now();
+
+    await BunSQLite.sql({
+        sql: `UPDATE bots_queue SET result = ?, finished_at = ? WHERE id = ?`,
+        values: [result, now, job.id],
+    });
+
+    if (job.task_id) {
+        await BunSQLite.sql({
+            sql: `UPDATE bot_tasks SET status = 'done', updated_at = ? WHERE id = ?`,
+            values: [now, job.task_id],
+        });
+    }
+
+    const message = await insertBotMessage({
+        bot_id: job.bot_id,
+        text: result,
+        needs_you,
+    });
+
+    const bot = needs_you
+        ? await setBotFace({
+              bot_id: job.bot_id,
+              face: "needs-you",
+              status_line: "Waiting on you",
+          })
+        : (await countOpenBotJobs({ bot_id: job.bot_id }))
+          ? null
+          : await setBotFace({ bot_id: job.bot_id, face: "done" });
+
+    return { message, bot };
+}

src/functions/backend/db/bots-queue/count-open-bot-jobs.ts

@@ -0,0 +1,17 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    bot_id: number | string;
+};
+
+/**
+ * How many of a bot's jobs are still pending or processing.
+ */
+export default async function countOpenBotJobs({ bot_id }: Params) {
+    const res = await BunSQLite.sql<{ open: number }>({
+        sql: `SELECT COUNT(*) AS open FROM bots_queue WHERE bot_id = ? AND status IN ('pending', 'processing')`,
+        values: [bot_id],
+    });
+
+    return Number(res.payload?.[0]?.open || 0);
+}

src/functions/backend/db/bots-queue/enqueue-bot-job.ts

@@ -0,0 +1,148 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type {
+    BUN_SQLITE_COBBLE_BOT_TASKS,
+    BUN_SQLITE_COBBLE_BOTS_QUEUE,
+    BunSQLiteTables,
+} from "@/db/types/db";
+import AppError from "@/src/utils/app-error";
+import grabUserBot from "../bots/grab-user-bot";
+import grabBotComputers from "../computers/grab-bot-computers";
+
+type Params = {
+    user_id: number | string;
+    bot_id: number | string;
+    title: string;
+    /**
+     * The brief the bot writes for itself (markdown): what to do and how
+     * it knows it's done.
+     */
+    instructions: string;
+    params?: Record<string, unknown>;
+    /**
+     * The user message that asked for this work.
+     */
+    message_id?: number | string;
+    /**
+     * The task for the working-on panel. One is created from `title` when
+     * not given.
+     */
+    task_id?: number | string;
+    /**
+     * Must be one of the bot's computers (direct or through a workspace).
+     */
+    computer_id?: number | string;
+    /**
+     * Milliseconds to hold the job back before it can be claimed.
+     */
+    delay?: number;
+};
+
+/**
+ * Queues long-running work for one of the user's bots and returns the job
+ * id. The bot replies to the user straight away (that it's on it); the
+ * queue handler does the work and `completeBotJob` posts the result. Not
+ * every message needs a job; quick answers are replied to directly.
+ */
+export default async function enqueueBotJob({
+    user_id,
+    bot_id,
+    title,
+    instructions,
+    params,
+    message_id,
+    task_id,
+    computer_id,
+    delay,
+}: Params) {
+    const bot = await grabUserBot({ bot_id, user_id });
+
+    if (!bot?.id) {
+        throw new AppError(`Bot not found.`);
+    }
+
+    if (message_id && !(await belongsToBot({ table: "bot_messages", id: message_id, bot_id: bot.id }))) {
+        throw new AppError(`Message not found.`);
+    }
+
+    if (task_id && !(await belongsToBot({ table: "bot_tasks", id: task_id, bot_id: bot.id }))) {
+        throw new AppError(`Task not found.`);
+    }
+
+    if (computer_id) {
+        const computers = await grabBotComputers({ bot_id: bot.id, user_id });
+
+        if (!computers.some((c) => String(c.id) == String(computer_id))) {
+            throw new AppError(`This bot has no access to that computer.`);
+        }
+    }
+
+    const final_task_id = task_id || (await createJobTask({ bot_id: bot.id, title }));
+
+    const res = await BunSQLite.queue.add<
+        BUN_SQLITE_COBBLE_BOTS_QUEUE,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "bots_queue",
+        data: [
+            {
+                bot_id: bot.id,
+                title,
+                instructions,
+                params: params ? JSON.stringify(params) : undefined,
+                message_id: message_id ? Number(message_id) : undefined,
+                task_id: Number(final_task_id),
+                computer_id: computer_id ? Number(computer_id) : undefined,
+            },
+        ],
+        delay,
+    });
+
+    const job_id = res.singleRes?.id || res.postInsertReturn?.insertId;
+
+    if (!res.success || !job_id) {
+        throw new Error(`Couldn't queue the job: ${res.msg || res.error}`);
+    }
+
+    return job_id;
+}
+
+async function belongsToBot({
+    table,
+    id,
+    bot_id,
+}: {
+    table: "bot_messages" | "bot_tasks";
+    id: number | string;
+    bot_id: number;
+}) {
+    const res = await BunSQLite.sql({
+        sql: `SELECT id FROM ${table} WHERE id = ? AND bot_id = ? LIMIT 1`,
+        values: [id, bot_id],
+    });
+
+    return Boolean(res.payload?.[0]);
+}
+
+async function createJobTask({
+    bot_id,
+    title,
+}: {
+    bot_id: number;
+    title: string;
+}) {
+    const res = await BunSQLite.insert<
+        BUN_SQLITE_COBBLE_BOT_TASKS,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "bot_tasks",
+        data: [{ bot_id, title, status: "active" }],
+    });
+
+    const task_id = res.singleRes?.id || res.postInsertReturn?.insertId;
+
+    if (!res.success || !task_id) {
+        throw new Error(`Couldn't create the job's task: ${res.msg}`);
+    }
+
+    return task_id;
+}

src/functions/backend/db/bots-queue/fail-bot-job.ts

@@ -0,0 +1,72 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BUN_SQLITE_COBBLE_BOTS_QUEUE } from "@/db/types/db";
+import { AppData } from "@/src/data/app-data";
+import AppError from "@/src/utils/app-error";
+import grabLockedBotJob from "./grab-locked-bot-job";
+import notifyBotJobFailed from "./notify-bot-job-failed";
+
+type Params = {
+    job_id: number | string;
+    worker: string;
+    error: string;
+    /**
+     * Retrying won't help (bad parameters, missing access): fail now
+     * instead of using the remaining attempts.
+     */
+    fatal?: boolean;
+    /**
+     * What to tell the user if the job is out of attempts. Defaults to a
+     * short note with the job title and error.
+     */
+    failure_message?: string;
+};
+
+/**
+ * Records a failed attempt. The job goes back to the queue with a backoff
+ * delay, or, once out of attempts (or `fatal`), is marked failed and the
+ * bot tells the user it needs them. Returns the job's new status and the
+ * failure notice, if one was sent.
+ */
+export default async function failBotJob({
+    job_id,
+    worker,
+    error,
+    fatal,
+    failure_message,
+}: Params) {
+    const job = await grabLockedBotJob({ job_id, worker });
+
+    if (!job?.id || !job.bot_id) {
+        throw new AppError(`This job is no longer held by ${worker}.`);
+    }
+
+    if (fatal) {
+        await BunSQLite.sql({
+            sql: `UPDATE bots_queue SET attempts = MAX(attempts, ?) WHERE id = ?`,
+            values: [AppData.BotQueueMaxAttempts, job.id],
+        });
+    }
+
+    const res = await BunSQLite.queue.fail<BUN_SQLITE_COBBLE_BOTS_QUEUE>({
+        table: "bots_queue",
+        id: job.id,
+        error,
+    });
+
+    if (!res.success || !res.singleRes) {
+        throw new Error(`Couldn't fail the job: ${res.msg || res.error}`);
+    }
+
+    const status = res.singleRes.status;
+
+    if (status != "failed") {
+        return { status, notice: null };
+    }
+
+    const notice = await notifyBotJobFailed({
+        job: res.singleRes,
+        failure_message,
+    });
+
+    return { status, notice };
+}

src/functions/backend/db/bots-queue/grab-locked-bot-job.ts

@@ -0,0 +1,23 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BUN_SQLITE_COBBLE_BOTS_QUEUE } from "@/db/types/db";
+
+type Params = {
+    job_id: number | string;
+    worker: string;
+};
+
+/**
+ * A job only while the given handler still holds it. Null once its lock
+ * timed out and it went back to the queue (or another handler took it).
+ */
+export default async function grabLockedBotJob({
+    job_id,
+    worker,
+}: Params): Promise<BUN_SQLITE_COBBLE_BOTS_QUEUE | null> {
+    const res = await BunSQLite.sql<BUN_SQLITE_COBBLE_BOTS_QUEUE>({
+        sql: `SELECT * FROM bots_queue WHERE id = ? AND status = 'processing' AND locked_by = ? LIMIT 1`,
+        values: [job_id, worker],
+    });
+
+    return res.payload?.[0] || null;
+}

src/functions/backend/db/bots-queue/grab-unreported-failed-bot-jobs.ts

@@ -0,0 +1,15 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BUN_SQLITE_COBBLE_BOTS_QUEUE } from "@/db/types/db";
+
+/**
+ * Failed jobs the user hasn't been told about: the ones bun-sqlite failed
+ * itself after a lock timeout on their last attempt. Jobs failed through
+ * `failBotJob` or cancelled already have `finished_at`.
+ */
+export default async function grabUnreportedFailedBotJobs() {
+    const res = await BunSQLite.sql<BUN_SQLITE_COBBLE_BOTS_QUEUE>({
+        sql: `SELECT * FROM bots_queue WHERE status = 'failed' AND finished_at IS NULL ORDER BY id ASC`,
+    });
+
+    return res.payload || [];
+}

src/functions/backend/db/bots-queue/notify-bot-job-failed.ts

@@ -0,0 +1,46 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BUN_SQLITE_COBBLE_BOTS_QUEUE } from "@/db/types/db";
+import insertBotMessage from "../bots/insert-bot-message";
+import setBotFace from "../bots/set-bot-face";
+
+type Params = {
+    job: BUN_SQLITE_COBBLE_BOTS_QUEUE;
+    failure_message?: string;
+};
+
+/**
+ * Wraps up a job that is out of attempts: stamps `finished_at` (so it's
+ * reported once), tells the user in the bot's conversation and sets the
+ * bot to needs-you. Its task stays active, since the work isn't done.
+ */
+export default async function notifyBotJobFailed({
+    job,
+    failure_message,
+}: Params) {
+    if (!job.id || !job.bot_id) {
+        throw new Error(`Job has no id or bot.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `UPDATE bots_queue SET finished_at = ? WHERE id = ?`,
+        values: [Date.now(), job.id],
+    });
+
+    const message = await insertBotMessage({
+        bot_id: job.bot_id,
+        text:
+            failure_message ||
+            [`I couldn't finish "${job.title || "the job"}".`, job.last_error]
+                .filter(Boolean)
+                .join(" "),
+        needs_you: true,
+    });
+
+    const bot = await setBotFace({
+        bot_id: job.bot_id,
+        face: "needs-you",
+        status_line: "Waiting on you",
+    });
+
+    return { message, bot };
+}

src/functions/backend/db/bots-queue/release-worker-bot-jobs.ts

@@ -0,0 +1,21 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    worker: string;
+};
+
+/**
+ * Puts the jobs a handler was running back in the queue straight away,
+ * instead of waiting out the lock timeout. For startup, after a restart
+ * cut those jobs off. The cut-off attempt isn't counted.
+ */
+export default async function releaseWorkerBotJobs({ worker }: Params) {
+    const now = Date.now();
+
+    const res = await BunSQLite.sql({
+        sql: `UPDATE bots_queue SET status = 'pending', attempts = MAX(attempts - 1, 0), available_at = ?, locked_at = NULL, locked_by = NULL, updated_at = ? WHERE status = 'processing' AND locked_by = ? RETURNING id`,
+        values: [now, now, worker],
+    });
+
+    return res.payload?.length || 0;
+}

src/functions/backend/db/bots-queue/update-bot-job.ts

@@ -0,0 +1,45 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    job_id: number | string;
+    worker: string;
+    /**
+     * Latest progress note (markdown), e.g. "Installed deps, running tests".
+     */
+    progress?: string;
+    /**
+     * Whatever the bot needs to resume if the job is picked up again.
+     */
+    checkpoint?: Record<string, unknown>;
+};
+
+/**
+ * The bot's "still working" update while it processes a job. Renews the
+ * lock (so the job isn't presumed lost) and saves progress and a
+ * checkpoint. Call it more often than `AppData.BotQueueLockTimeoutMs`.
+ *
+ * Returns false if this handler no longer holds the job: stop working on
+ * it, since it has gone back to the queue.
+ */
+export default async function updateBotJob({
+    job_id,
+    worker,
+    progress,
+    checkpoint,
+}: Params) {
+    const now = Date.now();
+
+    const res = await BunSQLite.sql({
+        sql: `UPDATE bots_queue SET locked_at = ?, updated_at = ?, progress = COALESCE(?, progress), checkpoint = COALESCE(?, checkpoint) WHERE id = ? AND status = 'processing' AND locked_by = ? RETURNING id`,
+        values: [
+            now,
+            now,
+            progress ?? null,
+            checkpoint ? JSON.stringify(checkpoint) : null,
+            job_id,
+            worker,
+        ],
+    });
+
+    return Boolean(res.payload?.[0]);
+}

src/functions/backend/db/bots/ensure-coordinator-bot.ts

@@ -9,7 +9,7 @@ type Params = {
 
 /**
  * Returns the id of the user's coordinator, creating it first (with the
- * default `CoordinatorSystemPrompt`) if the workspace has none. A
+ * default `CoordinatorSystemPrompt`) if the user has none. A
  * coordinator without a prompt gets the default; an edited prompt is never
  * overwritten. Safe to call on every visit.
  */

src/functions/backend/db/bots/grab-bot-prompt.ts

@@ -0,0 +1,39 @@
+import type { BUN_SQLITE_COBBLE_WORKSPACES } from "@/db/types/db";
+import BunSQLite from "@moduletrace/bun-sqlite";
+import composeBotPrompt from "@/src/utils/compose-bot-prompt";
+import AppError from "@/src/utils/app-error";
+import grabUserBot from "./grab-user-bot";
+
+type Params = {
+    bot_id: number | string;
+    user_id: number | string;
+};
+
+/**
+ * The full prompt for one of the user's bots: its core instructions, the
+ * system prompt of every non-archived workspace it's in, and its memory.
+ */
+export default async function grabBotPrompt({ bot_id, user_id }: Params) {
+    const bot = await grabUserBot({ bot_id, user_id });
+
+    if (!bot?.id) {
+        throw new AppError(`Bot not found.`);
+    }
+
+    const workspaces =
+        (
+            await BunSQLite.sql<BUN_SQLITE_COBBLE_WORKSPACES>({
+                sql: `SELECT w.name, w.system_prompt FROM workspaces w
+                    JOIN workspace_bots wb ON wb.workspace_id = w.id
+                    WHERE wb.bot_id = ? AND w.user_id = ? AND w.archived = 0
+                    ORDER BY w.id ASC`,
+                values: [bot.id, user_id],
+            })
+        ).payload || [];
+
+    return composeBotPrompt({
+        system_prompt: bot.system_prompt,
+        memory: bot.memory,
+        workspaces,
+    });
+}

src/functions/backend/db/bots/grab-bots.ts

@@ -6,7 +6,7 @@ type Params = {
 };
 
 /**
- * A workspace's crew for the rail: the coordinator pinned first, then
+ * A user's crew for the rail: the coordinator pinned first, then
  * workers by latest activity. Each row carries its latest message.
  */
 export default async function grabBots({

src/functions/backend/db/bots/grab-user-bot.ts

@@ -7,7 +7,7 @@ type Params = {
 };
 
 /**
- * A bot only if it belongs to the given workspace owner.
+ * A bot only if it belongs to the given owner.
  */
 export default async function grabUserBot({
     bot_id,

src/functions/backend/db/bots/insert-bot-message.ts

@@ -0,0 +1,53 @@
+import type {
+    BUN_SQLITE_COBBLE_BOT_MESSAGES,
+    BunSQLiteTables,
+} from "@/db/types/db";
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    bot_id: number;
+    text: string;
+    needs_you?: boolean;
+};
+
+/**
+ * Appends a bot message to its conversation, marks the bot unread and
+ * bumps its activity. Callers must check the bot first.
+ */
+export default async function insertBotMessage({
+    bot_id,
+    text,
+    needs_you,
+}: Params): Promise<BUN_SQLITE_COBBLE_BOT_MESSAGES> {
+    const now = Date.now();
+    const needs_you_flag = needs_you ? 1 : 0;
+
+    const res = await BunSQLite.insert<
+        BUN_SQLITE_COBBLE_BOT_MESSAGES,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "bot_messages",
+        data: [{ bot_id, author: "bot", text, needs_you: needs_you_flag }],
+    });
+
+    const id = res.postInsertReturn?.insertId;
+
+    if (!res.success || !id) {
+        throw new Error(`Failed to save message: ${res.msg}`);
+    }
+
+    await BunSQLite.sql({
+        sql: `UPDATE bots SET last_activity_at = ?, unread = 1 WHERE id = ?`,
+        values: [now, bot_id],
+    });
+
+    return {
+        id,
+        bot_id,
+        author: "bot",
+        text,
+        needs_you: needs_you_flag,
+        created_at: now,
+        updated_at: now,
+    };
+}

src/functions/backend/db/bots/set-bot-face.ts

@@ -0,0 +1,25 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BotFace } from "@/src/dict/bot-dict";
+
+type Params = {
+    bot_id: number | string;
+    face: BotFace;
+    status_line?: string;
+};
+
+/**
+ * Sets a bot's face (its status) and status line. Callers must check the
+ * bot first.
+ */
+export default async function setBotFace({
+    bot_id,
+    face,
+    status_line = "",
+}: Params) {
+    await BunSQLite.sql({
+        sql: `UPDATE bots SET face = ?, status_line = ?, updated_at = ? WHERE id = ?`,
+        values: [face, status_line, Date.now(), bot_id],
+    });
+
+    return { id: Number(bot_id), face, status_line };
+}

src/functions/backend/db/bots/update-bot-memory.ts

@@ -0,0 +1,36 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import assertPromptLength from "@/src/utils/assert-prompt-length";
+import grabUserBot from "./grab-user-bot";
+
+type Params = {
+    user_id: number | string;
+    bot_id: number | string;
+    /**
+     * The whole new memory (markdown), replacing the old one.
+     */
+    memory: string;
+};
+
+/**
+ * Replaces a bot's memory. The bot calls this as it learns what it must
+ * keep in mind; the user can edit it too.
+ */
+export default async function updateBotMemory({
+    user_id,
+    bot_id,
+    memory,
+}: Params) {
+    assertPromptLength({ label: "Memory", text: memory });
+
+    const bot = await grabUserBot({ bot_id, user_id });
+
+    if (!bot?.id) {
+        throw new AppError(`Bot not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `UPDATE bots SET memory = ?, updated_at = ? WHERE id = ?`,
+        values: [memory, Date.now(), bot.id],
+    });
+}

src/functions/backend/db/bots/update-bot-system-prompt.ts

@@ -0,0 +1,40 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import assertPromptLength from "@/src/utils/assert-prompt-length";
+import grabUserBot from "./grab-user-bot";
+
+type Params = {
+    user_id: number | string;
+    bot_id: number | string;
+    /**
+     * The whole new core instructions (markdown), replacing the old ones.
+     */
+    system_prompt: string;
+};
+
+/**
+ * Replaces a bot's core instructions. The bot calls this to adapt how it
+ * works to the user's workflow; the user can edit it too.
+ */
+export default async function updateBotSystemPrompt({
+    user_id,
+    bot_id,
+    system_prompt,
+}: Params) {
+    if (!system_prompt.trim()) {
+        throw new AppError(`A bot's core instructions can't be empty.`);
+    }
+
+    assertPromptLength({ label: "System prompt", text: system_prompt });
+
+    const bot = await grabUserBot({ bot_id, user_id });
+
+    if (!bot?.id) {
+        throw new AppError(`Bot not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `UPDATE bots SET system_prompt = ?, updated_at = ? WHERE id = ?`,
+        values: [system_prompt, Date.now(), bot.id],
+    });
+}

src/functions/backend/db/computers/add-bot-to-computer.ts

@@ -0,0 +1,32 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import grabUserBot from "../bots/grab-user-bot";
+import grabUserComputer from "./grab-user-computer";
+
+type Params = {
+    user_id: number | string;
+    bot_id: number | string;
+    computer_id: number | string;
+};
+
+/**
+ * Gives one of the user's bots access to one of their computers. Adding a
+ * bot that already has access is a no-op.
+ */
+export default async function addBotToComputer({
+    user_id,
+    bot_id,
+    computer_id,
+}: Params) {
+    const bot = await grabUserBot({ bot_id, user_id });
+    const computer = await grabUserComputer({ computer_id, user_id });
+
+    if (!bot?.id || !computer?.id) {
+        throw new AppError(`Bot or computer not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `INSERT OR IGNORE INTO bot_computers (bot_id, computer_id, created_at, updated_at) VALUES (?, ?, ?, ?)`,
+        values: [bot.id, computer.id, Date.now(), Date.now()],
+    });
+}

src/functions/backend/db/computers/ensure-main-computer-container.ts

@@ -0,0 +1,60 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type {
+    BUN_SQLITE_COBBLE_CONTAINERS,
+    BunSQLiteTables,
+} from "@/db/types/db";
+import { AppData } from "@/src/data/app-data";
+
+/**
+ * Returns the id of the main computer's container record, creating it if
+ * missing. The container itself is created at install, named
+ * `AppData.MainComputerContainerName` on the `AppData.DockerNetworkName`
+ * network; this only records it. Safe to call on every visit.
+ */
+export default async function ensureMainComputerContainer() {
+    const name = AppData.MainComputerContainerName;
+
+    const existing = (
+        await BunSQLite.select<
+            BUN_SQLITE_COBBLE_CONTAINERS,
+            (typeof BunSQLiteTables)[number]
+        >({
+            table: "containers",
+            query: {
+                query: {
+                    name: { value: name },
+                },
+                limit: 1,
+            },
+        })
+    ).payload?.[0];
+
+    if (existing?.id) {
+        return existing.id;
+    }
+
+    const res = await BunSQLite.insert<
+        BUN_SQLITE_COBBLE_CONTAINERS,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "containers",
+        data: [
+            {
+                name,
+                purpose: "computer",
+                network: AppData.DockerNetworkName,
+                hostname: name,
+                port: AppData.ComputerPort,
+                status: "unknown",
+            },
+        ],
+    });
+
+    const container_id = res.singleRes?.id || res.postInsertReturn?.insertId;
+
+    if (!res.success || !container_id) {
+        throw new Error(`Couldn't record the main computer's container: ${res.msg}`);
+    }
+
+    return container_id;
+}

src/functions/backend/db/computers/ensure-main-computer.ts

@@ -0,0 +1,85 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type {
+    BUN_SQLITE_COBBLE_COMPUTERS,
+    BunSQLiteTables,
+} from "@/db/types/db";
+import { MainComputerName } from "@/src/dict/computer-dict";
+import ensureMainComputerContainer from "./ensure-main-computer-container";
+
+type Params = {
+    user_id: number | string;
+    /**
+     * The owner's coordinator (from `ensureCoordinatorBot`). It always has
+     * access to the main computer.
+     */
+    coordinator_id: number | string;
+};
+
+/**
+ * Returns the id of the user's main computer, recording it (and its
+ * container) first if missing, and makes sure the coordinator has access
+ * to it. Safe to call on every visit.
+ */
+export default async function ensureMainComputer({
+    user_id,
+    coordinator_id,
+}: Params) {
+    const computer_id = await grabOrCreateMainComputer({ user_id });
+
+    await BunSQLite.sql({
+        sql: `INSERT OR IGNORE INTO bot_computers (bot_id, computer_id, created_at, updated_at) VALUES (?, ?, ?, ?)`,
+        values: [coordinator_id, computer_id, Date.now(), Date.now()],
+    });
+
+    return computer_id;
+}
+
+async function grabOrCreateMainComputer({
+    user_id,
+}: Pick<Params, "user_id">) {
+    const existing = (
+        await BunSQLite.select<
+            BUN_SQLITE_COBBLE_COMPUTERS,
+            (typeof BunSQLiteTables)[number]
+        >({
+            table: "computers",
+            query: {
+                query: {
+                    user_id: { value: user_id },
+                    kind: { value: "main" },
+                },
+                order: { field: "id", strategy: "ASC" },
+                limit: 1,
+            },
+        })
+    ).payload?.[0];
+
+    if (existing?.id) {
+        return existing.id;
+    }
+
+    const container_id = await ensureMainComputerContainer();
+
+    const res = await BunSQLite.insert<
+        BUN_SQLITE_COBBLE_COMPUTERS,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "computers",
+        data: [
+            {
+                user_id: Number(user_id),
+                container_id: Number(container_id),
+                name: MainComputerName,
+                kind: "main",
+            },
+        ],
+    });
+
+    const computer_id = res.singleRes?.id || res.postInsertReturn?.insertId;
+
+    if (!res.success || !computer_id) {
+        throw new Error(`Couldn't create the main computer: ${res.msg}`);
+    }
+
+    return computer_id;
+}

src/functions/backend/db/computers/grab-bot-computers.ts

@@ -0,0 +1,35 @@
+import type { BUN_SQLITE_COBBLE_COMPUTERS } from "@/db/types/db";
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    bot_id: number | string;
+    user_id: number | string;
+};
+
+/**
+ * Every computer a bot can use: the ones it was given directly
+ * (`bot_computers`) plus the ones assigned to any workspace it's in
+ * (`workspace_computers`). Only the owner's computers, each once.
+ */
+export default async function grabBotComputers({
+    bot_id,
+    user_id,
+}: Params): Promise<BUN_SQLITE_COBBLE_COMPUTERS[]> {
+    const res = await BunSQLite.sql<BUN_SQLITE_COBBLE_COMPUTERS>({
+        sql: `SELECT c.* FROM computers c
+            WHERE c.user_id = ?
+            AND (
+                c.id IN (SELECT computer_id FROM bot_computers WHERE bot_id = ?)
+                OR c.id IN (
+                    SELECT wc.computer_id FROM workspace_computers wc
+                    JOIN workspace_bots wb ON wb.workspace_id = wc.workspace_id
+                    JOIN workspaces w ON w.id = wc.workspace_id
+                    WHERE wb.bot_id = ? AND w.archived = 0
+                )
+            )
+            ORDER BY c.kind = 'main' DESC, c.id ASC`,
+        values: [user_id, bot_id, bot_id],
+    });
+
+    return res.payload || [];
+}

src/functions/backend/db/computers/grab-user-computer.ts

@@ -0,0 +1,22 @@
+import type { BUN_SQLITE_COBBLE_COMPUTERS } from "@/db/types/db";
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    computer_id: number | string;
+    user_id: number | string;
+};
+
+/**
+ * A computer only if it belongs to the given owner.
+ */
+export default async function grabUserComputer({
+    computer_id,
+    user_id,
+}: Params): Promise<BUN_SQLITE_COBBLE_COMPUTERS | null> {
+    const res = await BunSQLite.sql<BUN_SQLITE_COBBLE_COMPUTERS>({
+        sql: `SELECT * FROM computers WHERE id = ? AND user_id = ? LIMIT 1`,
+        values: [computer_id, user_id],
+    });
+
+    return res.payload?.[0] || null;
+}

src/functions/backend/db/computers/remove-bot-from-computer.ts

@@ -0,0 +1,44 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import isLockedComputerAccess from "@/src/utils/is-locked-computer-access";
+import grabUserBot from "../bots/grab-user-bot";
+import grabUserComputer from "./grab-user-computer";
+
+type Params = {
+    user_id: number | string;
+    bot_id: number | string;
+    computer_id: number | string;
+};
+
+/**
+ * Takes a bot's access to a computer away. The coordinator's access to the
+ * main computer can't be removed.
+ */
+export default async function removeBotFromComputer({
+    user_id,
+    bot_id,
+    computer_id,
+}: Params) {
+    const bot = await grabUserBot({ bot_id, user_id });
+    const computer = await grabUserComputer({ computer_id, user_id });
+
+    if (!bot?.id || !computer?.id) {
+        throw new AppError(`Bot or computer not found.`);
+    }
+
+    if (
+        isLockedComputerAccess({
+            bot_kind: bot.kind,
+            computer_kind: computer.kind,
+        })
+    ) {
+        throw new AppError(
+            `The coordinator always has access to the main computer.`,
+        );
+    }
+
+    await BunSQLite.sql({
+        sql: `DELETE FROM bot_computers WHERE bot_id = ? AND computer_id = ?`,
+        values: [bot.id, computer.id],
+    });
+}

src/functions/backend/db/enable-foreign-keys.ts

@@ -0,0 +1,14 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+/**
+ * SQLite leaves foreign keys off per connection, so the schema's
+ * `ON DELETE CASCADE` rules never fire unless this runs first. bun-sqlite
+ * reuses one connection per process, so once at startup is enough.
+ */
+export default async function enableForeignKeys() {
+    const res = await BunSQLite.sql({ sql: `PRAGMA foreign_keys = ON` });
+
+    if (!res.success) {
+        throw new Error(`Couldn't enable foreign keys: ${res.msg}`);
+    }
+}

src/functions/backend/db/workspaces/add-bot-to-workspace.ts

@@ -0,0 +1,32 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import grabUserBot from "../bots/grab-user-bot";
+import grabUserWorkspace from "./grab-user-workspace";
+
+type Params = {
+    user_id: number | string;
+    workspace_id: number | string;
+    bot_id: number | string;
+};
+
+/**
+ * Assigns one of the user's bots to one of their workspaces. Assigning a
+ * bot that is already there is a no-op.
+ */
+export default async function addBotToWorkspace({
+    user_id,
+    workspace_id,
+    bot_id,
+}: Params) {
+    const bot = await grabUserBot({ bot_id, user_id });
+    const workspace = await grabUserWorkspace({ workspace_id, user_id });
+
+    if (!bot?.id || !workspace?.id) {
+        throw new AppError(`Bot or workspace not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `INSERT OR IGNORE INTO workspace_bots (workspace_id, bot_id, created_at, updated_at) VALUES (?, ?, ?, ?)`,
+        values: [workspace.id, bot.id, Date.now(), Date.now()],
+    });
+}

src/functions/backend/db/workspaces/add-computer-to-workspace.ts

@@ -0,0 +1,32 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import grabUserComputer from "../computers/grab-user-computer";
+import grabUserWorkspace from "./grab-user-workspace";
+
+type Params = {
+    user_id: number | string;
+    workspace_id: number | string;
+    computer_id: number | string;
+};
+
+/**
+ * Assigns one of the user's computers to one of their workspaces, so every
+ * bot in the workspace gets access to it. Assigning it twice is a no-op.
+ */
+export default async function addComputerToWorkspace({
+    user_id,
+    workspace_id,
+    computer_id,
+}: Params) {
+    const computer = await grabUserComputer({ computer_id, user_id });
+    const workspace = await grabUserWorkspace({ workspace_id, user_id });
+
+    if (!computer?.id || !workspace?.id) {
+        throw new AppError(`Computer or workspace not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `INSERT OR IGNORE INTO workspace_computers (workspace_id, computer_id, created_at, updated_at) VALUES (?, ?, ?, ?)`,
+        values: [workspace.id, computer.id, Date.now(), Date.now()],
+    });
+}

src/functions/backend/db/workspaces/create-workspace.ts

@@ -0,0 +1,49 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type {
+    BUN_SQLITE_COBBLE_WORKSPACES,
+    BunSQLiteTables,
+} from "@/db/types/db";
+import assertPromptLength from "@/src/utils/assert-prompt-length";
+
+type Params = {
+    user_id: number | string;
+    name: string;
+    description?: string;
+    system_prompt?: string;
+};
+
+/**
+ * Creates a workspace owned by the user and returns its id.
+ */
+export default async function createWorkspace({
+    user_id,
+    name,
+    description,
+    system_prompt,
+}: Params) {
+    assertPromptLength({ label: "System prompt", text: system_prompt });
+
+    const res = await BunSQLite.insert<
+        BUN_SQLITE_COBBLE_WORKSPACES,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "workspaces",
+        data: [
+            {
+                user_id: Number(user_id),
+                name,
+                description,
+                system_prompt,
+                archived: 0,
+            },
+        ],
+    });
+
+    const workspace_id = res.singleRes?.id || res.postInsertReturn?.insertId;
+
+    if (!res.success || !workspace_id) {
+        throw new Error(`Couldn't create the workspace: ${res.msg}`);
+    }
+
+    return workspace_id;
+}

src/functions/backend/db/workspaces/grab-user-workspace.ts

@@ -0,0 +1,22 @@
+import type { BUN_SQLITE_COBBLE_WORKSPACES } from "@/db/types/db";
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    workspace_id: number | string;
+    user_id: number | string;
+};
+
+/**
+ * A workspace only if it belongs to the given owner.
+ */
+export default async function grabUserWorkspace({
+    workspace_id,
+    user_id,
+}: Params): Promise<BUN_SQLITE_COBBLE_WORKSPACES | null> {
+    const res = await BunSQLite.sql<BUN_SQLITE_COBBLE_WORKSPACES>({
+        sql: `SELECT * FROM workspaces WHERE id = ? AND user_id = ? LIMIT 1`,
+        values: [workspace_id, user_id],
+    });
+
+    return res.payload?.[0] || null;
+}

src/functions/backend/db/workspaces/remove-bot-from-workspace.ts

@@ -0,0 +1,29 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import grabUserWorkspace from "./grab-user-workspace";
+
+type Params = {
+    user_id: number | string;
+    workspace_id: number | string;
+    bot_id: number | string;
+};
+
+/**
+ * Removes a bot from one of the user's workspaces.
+ */
+export default async function removeBotFromWorkspace({
+    user_id,
+    workspace_id,
+    bot_id,
+}: Params) {
+    const workspace = await grabUserWorkspace({ workspace_id, user_id });
+
+    if (!workspace?.id) {
+        throw new AppError(`Workspace not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `DELETE FROM workspace_bots WHERE workspace_id = ? AND bot_id = ?`,
+        values: [workspace.id, bot_id],
+    });
+}

src/functions/backend/db/workspaces/remove-computer-from-workspace.ts

@@ -0,0 +1,30 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import grabUserWorkspace from "./grab-user-workspace";
+
+type Params = {
+    user_id: number | string;
+    workspace_id: number | string;
+    computer_id: number | string;
+};
+
+/**
+ * Takes a computer off one of the user's workspaces. Its bots keep any
+ * access they were given directly.
+ */
+export default async function removeComputerFromWorkspace({
+    user_id,
+    workspace_id,
+    computer_id,
+}: Params) {
+    const workspace = await grabUserWorkspace({ workspace_id, user_id });
+
+    if (!workspace?.id) {
+        throw new AppError(`Workspace not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `DELETE FROM workspace_computers WHERE workspace_id = ? AND computer_id = ?`,
+        values: [workspace.id, computer_id],
+    });
+}

src/functions/backend/db/workspaces/update-workspace.ts

@@ -0,0 +1,64 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type {
+    BUN_SQLITE_COBBLE_WORKSPACES,
+    BunSQLiteTables,
+} from "@/db/types/db";
+import AppError from "@/src/utils/app-error";
+import assertPromptLength from "@/src/utils/assert-prompt-length";
+import grabUserWorkspace from "./grab-user-workspace";
+import _ from "lodash";
+
+type Params = {
+    user_id: number | string;
+    workspace_id: number | string;
+    /**
+     * Only the fields given are changed.
+     */
+    data: Pick<
+        BUN_SQLITE_COBBLE_WORKSPACES,
+        "name" | "description" | "system_prompt" | "archived"
+    >;
+};
+
+/**
+ * Updates one of the user's workspaces. Its `system_prompt` is shared
+ * context for every bot in it.
+ */
+export default async function updateWorkspace({
+    user_id,
+    workspace_id,
+    data,
+}: Params) {
+    assertPromptLength({ label: "System prompt", text: data.system_prompt });
+
+    const workspace = await grabUserWorkspace({ workspace_id, user_id });
+
+    if (!workspace?.id) {
+        throw new AppError(`Workspace not found.`);
+    }
+
+    const res = await BunSQLite.update<
+        BUN_SQLITE_COBBLE_WORKSPACES,
+        (typeof BunSQLiteTables)[number]
+    >({
+        table: "workspaces",
+        targetId: workspace.id,
+        /**
+         * `BunSQLite.update` writes every key it gets, so a field left out
+         * here would be set to null.
+         */
+        data: _.omitBy(
+            {
+                name: data.name,
+                description: data.description,
+                system_prompt: data.system_prompt,
+                archived: data.archived,
+            },
+            _.isUndefined,
+        ),
+    });
+
+    if (!res.success) {
+        throw new Error(`Couldn't update the workspace: ${res.msg}`);
+    }
+}

src/pages/admin/bots/index.server.ts

@@ -1,11 +1,12 @@
 import userAuth from "@/src/functions/backend/auth/user-auth";
 import ensureCoordinatorBot from "@/src/functions/backend/db/bots/ensure-coordinator-bot";
+import ensureMainComputer from "@/src/functions/backend/db/computers/ensure-main-computer";
 import type { PagePropsType } from "@/src/types";
 import type { BunextPageServerFn } from "@moduletrace/bunext/types";
 
 /**
- * Opens the coordinator's conversation, creating the coordinator first if
+ * Opens the coordinator's conversation, creating the coordinator and the
- * this workspace doesn't have one yet.
+ * main computer first if this account doesn't have them yet.
  */
 export const server: BunextPageServerFn<PagePropsType> = async ({ req }) => {
     const { user } = await userAuth({ req });
@@ -19,6 +20,7 @@ export const server: BunextPageServerFn<PagePropsType> = async ({ req }) => {
     }
 
     const coordinator_id = await ensureCoordinatorBot({ user_id: user.id });
+    await ensureMainComputer({ user_id: user.id, coordinator_id });
 
     return {
         redirect: {

src/pages/api/admin/crud/(tables)/bot_computers/del.ts

@@ -0,0 +1,72 @@
+import type { BUN_SQLITE_COBBLE_BOT_COMPUTERS } from "@/db/types/db";
+import type { AdminCrudAPIParams } from "@/src/types";
+import isLockedComputerAccess from "@/src/utils/is-locked-computer-access";
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { APIResponseObject } from "@moduletrace/bunext/types";
+import _ from "lodash";
+
+type AccessRow = BUN_SQLITE_COBBLE_BOT_COMPUTERS & {
+    bot_kind?: string;
+    computer_kind?: string;
+};
+
+/**
+ * Deletes the matching access rows, skipping the coordinator's access to
+ * the main computer.
+ */
+export default async function (
+    params: AdminCrudAPIParams,
+): Promise<APIResponseObject> {
+    const { table, body, id, query } = params;
+
+    const records_to_delete =
+        await BunSQLite.select<BUN_SQLITE_COBBLE_BOT_COMPUTERS>({
+            table,
+            query: _.merge(query?.sql_query, body?.sql_query) || {},
+            targetId: id,
+        });
+
+    if (!records_to_delete.payload?.[0]) {
+        return {
+            success: false,
+            msg: `No Records to Delete`,
+        };
+    }
+
+    let skipped = 0;
+
+    for (let i = 0; i < records_to_delete.payload.length; i++) {
+        const record = records_to_delete.payload[i];
+
+        if (!record?.id) continue;
+
+        const access = (
+            await BunSQLite.sql<AccessRow>({
+                sql: `SELECT bc.id, b.kind AS bot_kind, c.kind AS computer_kind FROM bot_computers bc JOIN bots b ON b.id = bc.bot_id JOIN computers c ON c.id = bc.computer_id WHERE bc.id = ? LIMIT 1`,
+                values: [record.id],
+            })
+        ).payload?.[0];
+
+        if (
+            isLockedComputerAccess({
+                bot_kind: access?.bot_kind,
+                computer_kind: access?.computer_kind,
+            })
+        ) {
+            skipped++;
+            continue;
+        }
+
+        await BunSQLite.delete({
+            table,
+            targetId: record.id,
+        });
+    }
+
+    return {
+        success: true,
+        msg: skipped
+            ? `The coordinator always has access to the main computer.`
+            : undefined,
+    };
+}

src/pages/api/admin/crud/(tables)/bot_computers/index.ts

@@ -0,0 +1,42 @@
+import type { AdminCrudAPIParams } from "@/src/types";
+import type { APIResponseObject } from "@moduletrace/bunext/types";
+import checkUserAccess from "@/src/functions/backend/auth/check-user-access";
+import get from "../../(functions)/get";
+import post from "../../(functions)/post";
+import put from "./put";
+import del from "./del";
+
+/**
+ * Generic CRUD (super admin only), except that the coordinator's access to
+ * the main computer can't be changed or removed.
+ */
+export default async function (
+    params: AdminCrudAPIParams,
+): Promise<APIResponseObject> {
+    const { req, user_types } = params;
+
+    const is_super_admin = checkUserAccess({ user_types });
+
+    if (!is_super_admin.success) {
+        return {
+            success: false,
+            msg: `Unauthorized`,
+        };
+    }
+
+    switch (req.method) {
+        case "GET":
+            return await get(params);
+        case "POST":
+            return await post(params);
+        case "PUT":
+            return await put(params);
+        case "DELETE":
+            return await del(params);
+
+        default:
+            return {
+                success: false,
+            };
+    }
+}

src/pages/api/admin/crud/(tables)/bot_computers/put.ts

@@ -0,0 +1,11 @@
+import type { AdminCrudAPIParams } from "@/src/types";
+import type { APIResponseObject } from "@moduletrace/bunext/types";
+
+export default async function (
+    params: AdminCrudAPIParams,
+): Promise<APIResponseObject> {
+    return {
+        success: false,
+        msg: `Can't update computer access. Can only delete and insert.`,
+    };
+}

src/pages/api/admin/crud/[[...paths]].ts

@@ -2,6 +2,7 @@ import _ from "lodash";
 import users from "./(tables)/users";
 import userTypes from "./(tables)/user_types";
 import media from "./(tables)/media";
+import botComputers from "./(tables)/bot_computers";
 import get from "./(functions)/get";
 import put from "./(functions)/put";
 import del from "./(functions)/delete";
@@ -83,6 +84,8 @@ export const handler: BunextAPIRouteHandler<APIResponseObject> = async (
                 return await userTypes(crud_params);
             case "media":
                 return await media(crud_params);
+            case "bot_computers":
+                return await botComputers(crud_params);
 
             default:
                 break;

src/pages/api/auth/signup.tsx

@@ -3,6 +3,7 @@ import setUserPassword from "@/src/functions/backend/auth/set-user-password";
 import grabHasUsers from "@/src/functions/backend/auth/grab-has-users";
 import loginUser from "@/src/functions/backend/auth/login-user";
 import ensureCoordinatorBot from "@/src/functions/backend/db/bots/ensure-coordinator-bot";
+import ensureMainComputer from "@/src/functions/backend/db/computers/ensure-main-computer";
 import validatePassword from "@/src/utils/validate-password";
 import logEvent, { grabRequestIP, logError } from "@/src/functions/backend/logger";
 import { AppData } from "@/src/data/app-data";
@@ -74,11 +75,15 @@ export const handler: BunextAPIRouteHandler<APIResponseObject> = async ({
 
         /**
          * The account exists now, so a failure here mustn't fail signup
-         * (which is one-shot). `/admin/bots` creates it on the next visit.
+         * (which is one-shot). `/admin/bots` creates both on the next visit.
          */
-        await ensureCoordinatorBot({ user_id: new_user_id }).catch((error) =>
+        await ensureCoordinatorBot({ user_id: new_user_id })
+            .then((coordinator_id) =>
+                ensureMainComputer({ user_id: new_user_id, coordinator_id }),
+            )
+            .catch((error) =>
                 logError({
-                title: "Coordinator bot not created at signup",
+                    title: "Coordinator or main computer not created at signup",
                     error,
                     user_id: new_user_id,
                     ip_address: grabRequestIP(req),

src/scripts/seed-bots.ts

@@ -17,7 +17,7 @@ import ensureCoordinatorBot from "@/src/functions/backend/db/bots/ensure-coordin
 
 /**
  * Seeds the sample crew from the approved chat design into one user's
- * workspace. The coordinator already exists (it's made with the account),
+ * crew. The coordinator already exists (it's made with the account),
  * so its sample messages go onto it. Idempotent: skips a user who already
  * has worker bots.
  *

src/scripts/seed-super-admin.tsx

@@ -7,6 +7,7 @@ import type {
 import setUserPassword from "@/src/functions/backend/auth/set-user-password";
 import validatePassword from "@/src/utils/validate-password";
 import ensureCoordinatorBot from "@/src/functions/backend/db/bots/ensure-coordinator-bot";
+import ensureMainComputer from "@/src/functions/backend/db/computers/ensure-main-computer";
 
 const FIRST_NAME = process.env.SEED_SUPER_ADMIN_FIRST_NAME || "Super";
 const LAST_NAME = process.env.SEED_SUPER_ADMIN_LAST_NAME || "Admin";
@@ -97,6 +98,12 @@ async function seedSuperAdmin() {
     const coordinator_id = await ensureCoordinatorBot({ user_id });
     console.log(`Coordinator bot is #${coordinator_id}.`);
 
+    const main_computer_id = await ensureMainComputer({
+        user_id,
+        coordinator_id,
+    });
+    console.log(`Main computer is #${main_computer_id}.`);
+
     if (has_super_admin) {
         console.log(`User #${user_id} already has the super_admin type.`);
         return;

src/server.ts

@@ -5,6 +5,8 @@ import { websocket } from "./websocket";
 import userAuth from "./functions/backend/auth/user-auth";
 import type { WebSocketSession } from "./websocket/types";
 import { logError, grabRequestIP } from "./functions/backend/logger";
+import botsQueue from "./bots-queue";
+import enableForeignKeys from "./functions/backend/db/enable-foreign-keys";
 
 declare global {}
 
@@ -13,6 +15,7 @@ const WEBSOCKET_ENDPOINT = "/ws";
 const development = process.env.NODE_ENV == "development";
 const port = process.env.PORT || 7227;
 
+await enableForeignKeys();
 await bunext.bunextInit();
 
 const server = Bun.serve({
@@ -75,3 +78,4 @@ bunext.bunextLog.info(
 );
 
 cron();
+botsQueue();

src/types/index.ts

@@ -218,6 +218,15 @@ export const WebSocketEvents = [
      * @description Events sent from Server to Client
      */
     "server:pong",
+    /**
+     * A new message in one of the user's bot conversations (`data`: the
+     * `bot_messages` row)
+     */
+    "server:bot-message",
+    /**
+     * A bot's face or status line changed (`data`: `{ id, face, status_line }`)
+     */
+    "server:bot-updated",
 ] as const;
 
 export type WebSocketDataType = {

src/utils/assert-prompt-length.test.ts

@@ -0,0 +1,24 @@
+import { describe, expect, test } from "bun:test";
+import { AppData } from "@/src/data/app-data";
+import assertPromptLength from "./assert-prompt-length";
+
+describe("assertPromptLength", () => {
+    test("allows text up to the cap", () => {
+        expect(() =>
+            assertPromptLength({
+                label: "Memory",
+                text: "a".repeat(AppData.PromptMaxLength),
+            }),
+        ).not.toThrow();
+        expect(() => assertPromptLength({ label: "Memory" })).not.toThrow();
+    });
+
+    test("rejects text over the cap", () => {
+        expect(() =>
+            assertPromptLength({
+                label: "Memory",
+                text: "a".repeat(AppData.PromptMaxLength + 1),
+            }),
+        ).toThrow("Memory is too long");
+    });
+});

src/utils/assert-prompt-length.ts

@@ -0,0 +1,18 @@
+import { AppData } from "@/src/data/app-data";
+import AppError from "./app-error";
+
+type Params = {
+    label: string;
+    text?: string | null;
+};
+
+/**
+ * Throws if a prompt or memory is longer than `AppData.PromptMaxLength`.
+ */
+export default function assertPromptLength({ label, text }: Params) {
+    if ((text?.length || 0) > AppData.PromptMaxLength) {
+        throw new AppError(
+            `${label} is too long (max ${AppData.PromptMaxLength} characters).`,
+        );
+    }
+}

src/utils/compose-bot-prompt.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, test } from "bun:test";
+import composeBotPrompt from "./compose-bot-prompt";
+
+describe("composeBotPrompt", () => {
+    test("orders core instructions, workspaces, then memory", () => {
+        expect(
+            composeBotPrompt({
+                system_prompt: "# You are Scout\n\nFind things.",
+                memory: "- The user prefers short replies.",
+                workspaces: [
+                    { name: "Launch", system_prompt: "Ship by Friday." },
+                    { name: "Ops", system_prompt: "Servers are on Debian." },
+                ],
+            }),
+        ).toBe(
+            [
+                "# You are Scout\n\nFind things.",
+                "# Workspace: Launch\n\nShip by Friday.",
+                "# Workspace: Ops\n\nServers are on Debian.",
+                "# Memory\n\n- The user prefers short replies.",
+            ].join("\n\n"),
+        );
+    });
+
+    test("leaves out empty parts", () => {
+        expect(
+            composeBotPrompt({
+                system_prompt: "Core.",
+                memory: "   ",
+                workspaces: [
+                    { name: "Empty", system_prompt: "" },
+                    { name: null, system_prompt: "Shared." },
+                ],
+            }),
+        ).toBe("Core.\n\n# Workspace: Untitled\n\nShared.");
+        expect(composeBotPrompt({})).toBe("");
+    });
+});

src/utils/compose-bot-prompt.ts

@@ -0,0 +1,41 @@
+type WorkspacePrompt = {
+    name?: string | null;
+    system_prompt?: string | null;
+};
+
+type Params = {
+    system_prompt?: string | null;
+    memory?: string | null;
+    workspaces?: WorkspacePrompt[];
+};
+
+/**
+ * The full prompt a bot runs with (markdown): its own core instructions,
+ * then the shared context of each workspace it's in, then its memory.
+ * Empty parts are left out.
+ */
+export default function composeBotPrompt({
+    system_prompt,
+    memory,
+    workspaces = [],
+}: Params) {
+    const parts: string[] = [];
+
+    if (system_prompt?.trim()) {
+        parts.push(system_prompt.trim());
+    }
+
+    for (const workspace of workspaces) {
+        if (!workspace.system_prompt?.trim()) continue;
+
+        parts.push(
+            `# Workspace: ${workspace.name?.trim() || "Untitled"}\n\n${workspace.system_prompt.trim()}`,
+        );
+    }
+
+    if (memory?.trim()) {
+        parts.push(`# Memory\n\n${memory.trim()}`);
+    }
+
+    return parts.join("\n\n");
+}

src/utils/create-key-lock.test.ts

@@ -0,0 +1,68 @@
+import { describe, expect, test } from "bun:test";
+import createKeyLock from "./create-key-lock";
+
+const wait = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
+
+describe("createKeyLock", () => {
+    test("runs tasks with the same key one at a time, in order", async () => {
+        const lock = createKeyLock();
+        const events: string[] = [];
+
+        const job = (name: string, ms: number) =>
+            lock.run({
+                key: 1,
+                task: async () => {
+                    events.push(`${name}:start`);
+                    await wait(ms);
+                    events.push(`${name}:end`);
+                    return name;
+                },
+            });
+
+        const results = await Promise.all([job("a", 20), job("b", 1)]);
+
+        expect(results).toEqual(["a", "b"]);
+        expect(events).toEqual(["a:start", "a:end", "b:start", "b:end"]);
+        expect(lock.size()).toBe(0);
+    });
+
+    test("runs different keys side by side", async () => {
+        const lock = createKeyLock();
+        const events: string[] = [];
+
+        await Promise.all([
+            lock.run({
+                key: "x",
+                task: async () => {
+                    events.push("x:start");
+                    await wait(20);
+                    events.push("x:end");
+                },
+            }),
+            lock.run({
+                key: "y",
+                task: async () => {
+                    events.push("y:start");
+                    events.push("y:end");
+                },
+            }),
+        ]);
+
+        expect(events.indexOf("y:end")).toBeLessThan(events.indexOf("x:end"));
+    });
+
+    test("a failing task doesn't block the next one", async () => {
+        const lock = createKeyLock();
+
+        const failed = lock.run({
+            key: 1,
+            task: async () => {
+                throw new Error("boom");
+            },
+        });
+        const next = lock.run({ key: 1, task: async () => "ok" });
+
+        expect(failed).rejects.toThrow("boom");
+        expect(await next).toBe("ok");
+    });
+});

src/utils/create-key-lock.ts

@@ -0,0 +1,32 @@
+type RunParams<T> = {
+    key: string | number;
+    task: () => Promise<T>;
+};
+
+/**
+ * An in-process lock per key: tasks with the same key run one at a time in
+ * call order, tasks with different keys run side by side. Used so two jobs
+ * never drive the same computer at once.
+ */
+export default function createKeyLock() {
+    const tails = new Map<string, Promise<unknown>>();
+
+    async function run<T>({ key, task }: RunParams<T>): Promise<T> {
+        const id = String(key);
+        const previous = tails.get(id) || Promise.resolve();
+        const current = previous.catch(() => {}).then(task);
+        const tail = current.catch(() => {});
+
+        tails.set(id, tail);
+
+        try {
+            return await current;
+        } finally {
+            if (tails.get(id) === tail) {
+                tails.delete(id);
+            }
+        }
+    }
+
+    return { run, size: () => tails.size };
+}

src/utils/is-locked-computer-access.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, test } from "bun:test";
+import isLockedComputerAccess from "./is-locked-computer-access";
+
+describe("isLockedComputerAccess", () => {
+    test("locks the coordinator to the main computer", () => {
+        expect(
+            isLockedComputerAccess({
+                bot_kind: "coordinator",
+                computer_kind: "main",
+            }),
+        ).toBe(true);
+    });
+
+    test("leaves every other pair removable", () => {
+        expect(
+            isLockedComputerAccess({ bot_kind: "worker", computer_kind: "main" }),
+        ).toBe(false);
+        expect(
+            isLockedComputerAccess({
+                bot_kind: "coordinator",
+                computer_kind: "sandbox",
+            }),
+        ).toBe(false);
+        expect(
+            isLockedComputerAccess({
+                bot_kind: "worker",
+                computer_kind: "sandbox",
+            }),
+        ).toBe(false);
+        expect(isLockedComputerAccess({})).toBe(false);
+    });
+});

src/utils/is-locked-computer-access.ts

@@ -0,0 +1,16 @@
+type Params = {
+    bot_kind?: string | null;
+    computer_kind?: string | null;
+};
+
+/**
+ * The coordinator always has the main computer. That one access is granted
+ * with the account and can never be removed; every other bot/computer pair
+ * can be added and removed freely.
+ */
+export default function isLockedComputerAccess({
+    bot_kind,
+    computer_kind,
+}: Params) {
+    return bot_kind == "coordinator" && computer_kind == "main";
+}

src/websocket/(functions)/send-to-user.ts

@@ -0,0 +1,28 @@
+import type { WebSocketDataType } from "@/src/types";
+import { getAllRooms } from "../(data)/rooms";
+
+type Params = {
+    user_id: number | string;
+    data: WebSocketDataType;
+};
+
+/**
+ * Sends to every open socket of one user. Every socket joins `public` on
+ * open, so its members are all connected clients.
+ */
+export function sendToUser({ user_id, data }: Params) {
+    const members = getAllRooms().get("public");
+
+    if (!members) return;
+
+    const message = JSON.stringify(data);
+
+    for (const ws of members) {
+        if (
+            String(ws.data.user?.id) == String(user_id) &&
+            ws.readyState === WebSocket.OPEN
+        ) {
+            ws.send(message);
+        }
+    }
+}