Add plugin framework and settings UI

packages/db/src/schema/index.ts

@@ -32,3 +32,11 @@ export { approvalComments } from "./approval_comments.js";
 export { activityLog } from "./activity_log.js";
 export { companySecrets } from "./company_secrets.js";
 export { companySecretVersions } from "./company_secret_versions.js";
+export { plugins } from "./plugins.js";
+export { pluginConfig } from "./plugin_config.js";
+export { pluginCompanySettings } from "./plugin_company_settings.js";
+export { pluginState } from "./plugin_state.js";
+export { pluginEntities } from "./plugin_entities.js";
+export { pluginJobs, pluginJobRuns } from "./plugin_jobs.js";
+export { pluginWebhookDeliveries } from "./plugin_webhooks.js";
+export { pluginLogs } from "./plugin_logs.js";

packages/db/src/schema/plugin_company_settings.ts

@@ -0,0 +1,41 @@
+import { pgTable, uuid, text, timestamp, jsonb, index, uniqueIndex, boolean } from "drizzle-orm/pg-core";
+import { companies } from "./companies.js";
+import { plugins } from "./plugins.js";
+
+/**
+ * `plugin_company_settings` table — stores operator-managed plugin settings
+ * scoped to a specific company.
+ *
+ * This is distinct from `plugin_config`, which stores instance-wide plugin
+ * configuration. Each company can have at most one settings row per plugin.
+ *
+ * Rows represent explicit overrides from the default company behavior:
+ * - no row => plugin is enabled for the company by default
+ * - row with `enabled = false` => plugin is disabled for that company
+ * - row with `enabled = true` => plugin remains enabled and stores company settings
+ */
+export const pluginCompanySettings = pgTable(
+  "plugin_company_settings",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    companyId: uuid("company_id")
+      .notNull()
+      .references(() => companies.id, { onDelete: "cascade" }),
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    enabled: boolean("enabled").notNull().default(true),
+    settingsJson: jsonb("settings_json").$type<Record<string, unknown>>().notNull().default({}),
+    lastError: text("last_error"),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    companyIdx: index("plugin_company_settings_company_idx").on(table.companyId),
+    pluginIdx: index("plugin_company_settings_plugin_idx").on(table.pluginId),
+    companyPluginUq: uniqueIndex("plugin_company_settings_company_plugin_uq").on(
+      table.companyId,
+      table.pluginId,
+    ),
+  }),
+);

packages/db/src/schema/plugin_config.ts

@@ -0,0 +1,30 @@
+import { pgTable, uuid, text, timestamp, jsonb, uniqueIndex } from "drizzle-orm/pg-core";
+import { plugins } from "./plugins.js";
+
+/**
+ * `plugin_config` table — stores operator-provided instance configuration
+ * for each plugin (one row per plugin, enforced by a unique index on
+ * `plugin_id`).
+ *
+ * The `config_json` column holds the values that the operator enters in the
+ * plugin settings UI. These values are validated at runtime against the
+ * plugin's `instanceConfigSchema` from the manifest.
+ *
+ * @see PLUGIN_SPEC.md §21.3
+ */
+export const pluginConfig = pgTable(
+  "plugin_config",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    configJson: jsonb("config_json").$type<Record<string, unknown>>().notNull().default({}),
+    lastError: text("last_error"),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    pluginIdIdx: uniqueIndex("plugin_config_plugin_id_idx").on(table.pluginId),
+  }),
+);

packages/db/src/schema/plugin_entities.ts

@@ -0,0 +1,54 @@
+import {
+  pgTable,
+  uuid,
+  text,
+  timestamp,
+  jsonb,
+  index,
+  uniqueIndex,
+} from "drizzle-orm/pg-core";
+import { plugins } from "./plugins.js";
+import type { PluginStateScopeKind } from "@paperclipai/shared";
+
+/**
+ * `plugin_entities` table — persistent high-level mapping between Paperclip
+ * objects and external plugin-defined entities.
+ *
+ * This table is used by plugins (e.g. `linear`, `github`) to store pointers
+ * to their respective external IDs for projects, issues, etc. and to store
+ * their custom data.
+ *
+ * Unlike `plugin_state`, which is for raw K-V persistence, `plugin_entities`
+ * is intended for structured object mappings that the host can understand
+ * and query for cross-plugin UI integration.
+ *
+ * @see PLUGIN_SPEC.md §21.3
+ */
+export const pluginEntities = pgTable(
+  "plugin_entities",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    entityType: text("entity_type").notNull(),
+    scopeKind: text("scope_kind").$type<PluginStateScopeKind>().notNull(),
+    scopeId: text("scope_id"), // NULL for global scope (text to match plugin_state.scope_id)
+    externalId: text("external_id"), // ID in the external system
+    title: text("title"),
+    status: text("status"),
+    data: jsonb("data").$type<Record<string, unknown>>().notNull().default({}),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    pluginIdx: index("plugin_entities_plugin_idx").on(table.pluginId),
+    typeIdx: index("plugin_entities_type_idx").on(table.entityType),
+    scopeIdx: index("plugin_entities_scope_idx").on(table.scopeKind, table.scopeId),
+    externalIdx: uniqueIndex("plugin_entities_external_idx").on(
+      table.pluginId,
+      table.entityType,
+      table.externalId,
+    ),
+  }),
+);

packages/db/src/schema/plugin_jobs.ts

@@ -0,0 +1,102 @@
+import {
+  pgTable,
+  uuid,
+  text,
+  integer,
+  timestamp,
+  jsonb,
+  index,
+  uniqueIndex,
+} from "drizzle-orm/pg-core";
+import { plugins } from "./plugins.js";
+import type { PluginJobStatus, PluginJobRunStatus, PluginJobRunTrigger } from "@paperclipai/shared";
+
+/**
+ * `plugin_jobs` table — registration and runtime configuration for
+ * scheduled jobs declared by plugins in their manifests.
+ *
+ * Each row represents one scheduled job entry for a plugin. The
+ * `job_key` matches the key declared in the manifest's `jobs` array.
+ * The `schedule` column stores the cron expression or interval string
+ * used by the job scheduler to decide when to fire the job.
+ *
+ * Status values:
+ * - `active` — job is enabled and will run on schedule
+ * - `paused` — job is temporarily disabled by the operator
+ * - `error` — job has been disabled due to repeated failures
+ *
+ * @see PLUGIN_SPEC.md §21.3 — `plugin_jobs`
+ */
+export const pluginJobs = pgTable(
+  "plugin_jobs",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    /** FK to the owning plugin. Cascades on delete. */
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    /** Identifier matching the key in the plugin manifest's `jobs` array. */
+    jobKey: text("job_key").notNull(),
+    /** Cron expression (e.g. `"0 * * * *"`) or interval string. */
+    schedule: text("schedule").notNull(),
+    /** Current scheduling state. */
+    status: text("status").$type<PluginJobStatus>().notNull().default("active"),
+    /** Timestamp of the most recent successful execution. */
+    lastRunAt: timestamp("last_run_at", { withTimezone: true }),
+    /** Pre-computed timestamp of the next scheduled execution. */
+    nextRunAt: timestamp("next_run_at", { withTimezone: true }),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    pluginIdx: index("plugin_jobs_plugin_idx").on(table.pluginId),
+    nextRunIdx: index("plugin_jobs_next_run_idx").on(table.nextRunAt),
+    uniqueJobIdx: uniqueIndex("plugin_jobs_unique_idx").on(table.pluginId, table.jobKey),
+  }),
+);
+
+/**
+ * `plugin_job_runs` table — immutable execution history for plugin-owned jobs.
+ *
+ * Each row is created when a job run begins and updated when it completes.
+ * Rows are never modified after `status` reaches a terminal value
+ * (`succeeded` | `failed` | `cancelled`).
+ *
+ * Trigger values:
+ * - `scheduled` — fired automatically by the cron/interval scheduler
+ * - `manual` — triggered by an operator via the admin UI or API
+ *
+ * @see PLUGIN_SPEC.md §21.3 — `plugin_job_runs`
+ */
+export const pluginJobRuns = pgTable(
+  "plugin_job_runs",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    /** FK to the parent job definition. Cascades on delete. */
+    jobId: uuid("job_id")
+      .notNull()
+      .references(() => pluginJobs.id, { onDelete: "cascade" }),
+    /** Denormalized FK to the owning plugin for efficient querying. Cascades on delete. */
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    /** What caused this run to start (`"scheduled"` or `"manual"`). */
+    trigger: text("trigger").$type<PluginJobRunTrigger>().notNull(),
+    /** Current lifecycle state of this run. */
+    status: text("status").$type<PluginJobRunStatus>().notNull().default("pending"),
+    /** Wall-clock duration in milliseconds. Null until the run finishes. */
+    durationMs: integer("duration_ms"),
+    /** Error message if `status === "failed"`. */
+    error: text("error"),
+    /** Ordered list of log lines emitted during this run. */
+    logs: jsonb("logs").$type<string[]>().notNull().default([]),
+    startedAt: timestamp("started_at", { withTimezone: true }),
+    finishedAt: timestamp("finished_at", { withTimezone: true }),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    jobIdx: index("plugin_job_runs_job_idx").on(table.jobId),
+    pluginIdx: index("plugin_job_runs_plugin_idx").on(table.pluginId),
+    statusIdx: index("plugin_job_runs_status_idx").on(table.status),
+  }),
+);

packages/db/src/schema/plugin_logs.ts

@@ -0,0 +1,43 @@
+import {
+  pgTable,
+  uuid,
+  text,
+  timestamp,
+  jsonb,
+  index,
+} from "drizzle-orm/pg-core";
+import { plugins } from "./plugins.js";
+
+/**
+ * `plugin_logs` table — structured log storage for plugin workers.
+ *
+ * Each row stores a single log entry emitted by a plugin worker via
+ * `ctx.logger.info(...)` etc. Logs are queryable by plugin, level, and
+ * time range to support the operator logs panel and debugging workflows.
+ *
+ * Rows are inserted by the host when handling `log` notifications from
+ * the worker process. A capped retention policy can be applied via
+ * periodic cleanup (e.g. delete rows older than 7 days).
+ *
+ * @see PLUGIN_SPEC.md §26 — Observability
+ */
+export const pluginLogs = pgTable(
+  "plugin_logs",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    level: text("level").notNull().default("info"),
+    message: text("message").notNull(),
+    meta: jsonb("meta").$type<Record<string, unknown>>(),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    pluginTimeIdx: index("plugin_logs_plugin_time_idx").on(
+      table.pluginId,
+      table.createdAt,
+    ),
+    levelIdx: index("plugin_logs_level_idx").on(table.level),
+  }),
+);

packages/db/src/schema/plugin_state.ts

@@ -0,0 +1,90 @@
+import {
+  pgTable,
+  uuid,
+  text,
+  timestamp,
+  jsonb,
+  index,
+  unique,
+} from "drizzle-orm/pg-core";
+import type { PluginStateScopeKind } from "@paperclipai/shared";
+import { plugins } from "./plugins.js";
+
+/**
+ * `plugin_state` table — scoped key-value storage for plugin workers.
+ *
+ * Each row stores a single JSON value identified by
+ * `(plugin_id, scope_kind, scope_id, namespace, state_key)`. Plugins use
+ * this table through `ctx.state.get()`, `ctx.state.set()`, and
+ * `ctx.state.delete()` in the SDK.
+ *
+ * Scope kinds determine the granularity of isolation:
+ * - `instance` — one value shared across the whole Paperclip instance
+ * - `company` — one value per company
+ * - `project` — one value per project
+ * - `project_workspace` — one value per project workspace
+ * - `agent` — one value per agent
+ * - `issue` — one value per issue
+ * - `goal` — one value per goal
+ * - `run` — one value per agent run
+ *
+ * The `namespace` column defaults to `"default"` and can be used to
+ * logically group keys without polluting the root namespace.
+ *
+ * @see PLUGIN_SPEC.md §21.3 — `plugin_state`
+ */
+export const pluginState = pgTable(
+  "plugin_state",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    /** FK to the owning plugin. Cascades on delete. */
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    /** Granularity of the scope (e.g. `"instance"`, `"project"`, `"issue"`). */
+    scopeKind: text("scope_kind").$type<PluginStateScopeKind>().notNull(),
+    /**
+     * UUID or text identifier for the scoped object.
+     * Null for `instance` scope (which has no associated entity).
+     */
+    scopeId: text("scope_id"),
+    /**
+     * Sub-namespace to avoid key collisions within a scope.
+     * Defaults to `"default"` if the plugin does not specify one.
+     */
+    namespace: text("namespace").notNull().default("default"),
+    /** The key identifying this state entry within the namespace. */
+    stateKey: text("state_key").notNull(),
+    /** JSON-serializable value stored by the plugin. */
+    valueJson: jsonb("value_json").notNull(),
+    /** Timestamp of the most recent write. */
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    /**
+     * Unique constraint enforces that there is at most one value per
+     * (plugin, scope kind, scope id, namespace, key) tuple.
+     *
+     * `nullsNotDistinct()` is required so that `scope_id IS NULL` entries
+     * (used by `instance` scope) are treated as equal by PostgreSQL rather
+     * than as distinct nulls — otherwise the upsert target in `set()` would
+     * fail to match existing rows and create duplicates.
+     *
+     * Requires PostgreSQL 15+.
+     */
+    uniqueEntry: unique("plugin_state_unique_entry_idx")
+      .on(
+        table.pluginId,
+        table.scopeKind,
+        table.scopeId,
+        table.namespace,
+        table.stateKey,
+      )
+      .nullsNotDistinct(),
+    /** Speed up lookups by plugin + scope kind (most common access pattern). */
+    pluginScopeIdx: index("plugin_state_plugin_scope_idx").on(
+      table.pluginId,
+      table.scopeKind,
+    ),
+  }),
+);

packages/db/src/schema/plugin_webhooks.ts

@@ -0,0 +1,65 @@
+import {
+  pgTable,
+  uuid,
+  text,
+  integer,
+  timestamp,
+  jsonb,
+  index,
+} from "drizzle-orm/pg-core";
+import { plugins } from "./plugins.js";
+import type { PluginWebhookDeliveryStatus } from "@paperclipai/shared";
+
+/**
+ * `plugin_webhook_deliveries` table — inbound webhook delivery history for plugins.
+ *
+ * When an external system sends an HTTP POST to a plugin's registered webhook
+ * endpoint (e.g. `/api/plugins/:pluginKey/webhooks/:webhookKey`), the server
+ * creates a row in this table before dispatching the payload to the plugin
+ * worker. This provides an auditable log of every delivery attempt.
+ *
+ * The `webhook_key` matches the key declared in the plugin manifest's
+ * `webhooks` array. `external_id` is an optional identifier supplied by the
+ * remote system (e.g. a GitHub delivery GUID) that can be used to detect
+ * and reject duplicate deliveries.
+ *
+ * Status values:
+ * - `pending` — received but not yet dispatched to the worker
+ * - `processing` — currently being handled by the plugin worker
+ * - `succeeded` — worker processed the payload successfully
+ * - `failed` — worker returned an error or timed out
+ *
+ * @see PLUGIN_SPEC.md §21.3 — `plugin_webhook_deliveries`
+ */
+export const pluginWebhookDeliveries = pgTable(
+  "plugin_webhook_deliveries",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    /** FK to the owning plugin. Cascades on delete. */
+    pluginId: uuid("plugin_id")
+      .notNull()
+      .references(() => plugins.id, { onDelete: "cascade" }),
+    /** Identifier matching the key in the plugin manifest's `webhooks` array. */
+    webhookKey: text("webhook_key").notNull(),
+    /** Optional de-duplication ID provided by the external system. */
+    externalId: text("external_id"),
+    /** Current delivery state. */
+    status: text("status").$type<PluginWebhookDeliveryStatus>().notNull().default("pending"),
+    /** Wall-clock processing duration in milliseconds. Null until delivery finishes. */
+    durationMs: integer("duration_ms"),
+    /** Error message if `status === "failed"`. */
+    error: text("error"),
+    /** Raw JSON body of the inbound HTTP request. */
+    payload: jsonb("payload").$type<Record<string, unknown>>().notNull(),
+    /** Relevant HTTP headers from the inbound request (e.g. signature headers). */
+    headers: jsonb("headers").$type<Record<string, string>>().notNull().default({}),
+    startedAt: timestamp("started_at", { withTimezone: true }),
+    finishedAt: timestamp("finished_at", { withTimezone: true }),
+    createdAt: timestamp("created_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    pluginIdx: index("plugin_webhook_deliveries_plugin_idx").on(table.pluginId),
+    statusIdx: index("plugin_webhook_deliveries_status_idx").on(table.status),
+    keyIdx: index("plugin_webhook_deliveries_key_idx").on(table.webhookKey),
+  }),
+);

packages/db/src/schema/plugins.ts

@@ -0,0 +1,45 @@
+import {
+  pgTable,
+  uuid,
+  text,
+  integer,
+  timestamp,
+  jsonb,
+  index,
+  uniqueIndex,
+} from "drizzle-orm/pg-core";
+import type { PluginCategory, PluginStatus, PaperclipPluginManifestV1 } from "@paperclipai/shared";
+
+/**
+ * `plugins` table — stores one row per installed plugin.
+ *
+ * Each plugin is uniquely identified by `plugin_key` (derived from
+ * the manifest `id`). The full manifest is persisted as JSONB in
+ * `manifest_json` so the host can reconstruct capability and UI
+ * slot information without loading the plugin package.
+ *
+ * @see PLUGIN_SPEC.md §21.3
+ */
+export const plugins = pgTable(
+  "plugins",
+  {
+    id: uuid("id").primaryKey().defaultRandom(),
+    pluginKey: text("plugin_key").notNull(),
+    packageName: text("package_name").notNull(),
+    version: text("version").notNull(),
+    apiVersion: integer("api_version").notNull().default(1),
+    categories: jsonb("categories").$type<PluginCategory[]>().notNull().default([]),
+    manifestJson: jsonb("manifest_json").$type<PaperclipPluginManifestV1>().notNull(),
+    status: text("status").$type<PluginStatus>().notNull().default("installed"),
+    installOrder: integer("install_order"),
+    /** Resolved package path for local-path installs; used to find worker entrypoint. */
+    packagePath: text("package_path"),
+    lastError: text("last_error"),
+    installedAt: timestamp("installed_at", { withTimezone: true }).notNull().defaultNow(),
+    updatedAt: timestamp("updated_at", { withTimezone: true }).notNull().defaultNow(),
+  },
+  (table) => ({
+    pluginKeyIdx: uniqueIndex("plugins_plugin_key_idx").on(table.pluginKey),
+    statusIdx: index("plugins_status_idx").on(table.status),
+  }),
+);