improvement(kb-connectors): multi-select fields + Slack bot/app message extraction

apps/sim/app/api/tools/linear/projects/route.ts

@@ -45,17 +45,40 @@ export const POST = withRouteHandler(async (request: NextRequest) => {
     }
 
     const linearClient = new LinearClient({ accessToken })
-    let projects: Array<{ id: string; name: string }> = []
 
-    const team = await linearClient.team(teamId)
-    const projectsResult = await team.projects()
-    projects = projectsResult.nodes.map((project: Project) => ({
-      id: project.id,
-      name: project.name,
-    }))
+    /**
+     * teamId may be a single ID or a comma-separated list when the basic-mode
+     * team selector is in multi-select. Fetch projects from each team in
+     * parallel and dedupe by project ID (Linear projects can be cross-team).
+     */
+    const teamIds = teamId
+      .split(',')
+      .map((s) => s.trim())
+      .filter(Boolean)
+
+    const perTeam = await Promise.all(
+      teamIds.map(async (id) => {
+        const team = await linearClient.team(id)
+        const result = await team.projects()
+        return result.nodes.map((project: Project) => ({
+          id: project.id,
+          name: project.name,
+        }))
+      })
+    )
+
+    const seen = new Set<string>()
+    const projects: Array<{ id: string; name: string }> = []
+    for (const teamProjects of perTeam) {
+      for (const project of teamProjects) {
+        if (seen.has(project.id)) continue
+        seen.add(project.id)
+        projects.push(project)
+      }
+    }
 
     if (projects.length === 0) {
-      logger.info('No projects found for team', { teamId })
+      logger.info('No projects found for team(s)', { teamIds })
     }
 
     return NextResponse.json({ projects })

apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/add-connector-modal/add-connector-modal.tsx

@@ -29,6 +29,7 @@ import { OAuthModal } from '@/app/workspace/[workspaceId]/components/oauth-modal
 import { ConnectorSelectorField } from '@/app/workspace/[workspaceId]/knowledge/[id]/components/connector-selector-field'
 import { SYNC_INTERVALS } from '@/app/workspace/[workspaceId]/knowledge/[id]/components/consts'
 import { MaxBadge } from '@/app/workspace/[workspaceId]/knowledge/[id]/components/max-badge'
+import type { ConfigFieldValue } from '@/app/workspace/[workspaceId]/knowledge/[id]/hooks/use-connector-config-fields'
 import { useConnectorConfigFields } from '@/app/workspace/[workspaceId]/knowledge/[id]/hooks/use-connector-config-fields'
 import { isBillingEnabled } from '@/app/workspace/[workspaceId]/settings/navigation'
 import { CONNECTOR_REGISTRY } from '@/connectors/registry'
@@ -108,6 +109,7 @@ export function AddConnectorModal({
     setCanonicalModes,
     canonicalGroups,
     isFieldVisible,
+    isFieldPopulated,
     handleFieldChange,
     toggleCanonicalMode,
     resolveSourceConfig,
@@ -150,16 +152,16 @@ export function AddConnectorModal({
     for (const field of connectorConfig.configFields) {
       if (!field.required) continue
       if (!isFieldVisible(field)) continue
-      if (!sourceConfig[field.id]?.trim()) return false
+      if (!isFieldPopulated(field)) return false
     }
     return true
   }, [
     connectorConfig,
     isApiKeyMode,
     apiKeyValue,
     effectiveCredentialId,
-    sourceConfig,
     isFieldVisible,
+    isFieldPopulated,
   ])
 
   const handleSubmit = () => {
@@ -169,7 +171,13 @@ export function AddConnectorModal({
 
     const resolvedConfig: Record<string, unknown> = {}
     for (const [key, value] of Object.entries(resolveSourceConfig())) {
-      if (value) resolvedConfig[key] = value
+      if (Array.isArray(value)) {
+        if (value.length > 0) resolvedConfig[key] = value
+      } else if (typeof value === 'string') {
+        if (value) resolvedConfig[key] = value
+      } else if (value !== undefined && value !== null) {
+        resolvedConfig[key] = value
+      }
     }
     if (disabledTagIds.size > 0) {
       resolvedConfig.disabledTagIds = Array.from(disabledTagIds)
@@ -370,8 +378,8 @@ export function AddConnectorModal({
                       {field.type === 'selector' && field.selectorKey ? (
                         <ConnectorSelectorField
                           field={field as ConnectorConfigField & { selectorKey: SelectorKey }}
-                          value={sourceConfig[field.id] || ''}
-                          onChange={(value) => handleFieldChange(field.id, value)}
+                          value={sourceConfig[field.id] ?? (field.multi ? [] : '')}
+                          onChange={(value: ConfigFieldValue) => handleFieldChange(field.id, value)}
                           credentialId={effectiveCredentialId}
                           sourceConfig={sourceConfig}
                           configFields={connectorConfig.configFields}
@@ -385,13 +393,21 @@ export function AddConnectorModal({
                             label: opt.label,
                             value: opt.id,
                           }))}
-                          value={sourceConfig[field.id] || undefined}
+                          value={
+                            typeof sourceConfig[field.id] === 'string'
+                              ? (sourceConfig[field.id] as string) || undefined
+                              : undefined
+                          }
                           onChange={(value) => handleFieldChange(field.id, value)}
                           placeholder={field.placeholder || `Select ${field.title.toLowerCase()}`}
                         />
                       ) : (
                         <Input
-                          value={sourceConfig[field.id] || ''}
+                          value={
+                            Array.isArray(sourceConfig[field.id])
+                              ? (sourceConfig[field.id] as string[]).join(', ')
+                              : (sourceConfig[field.id] as string) || ''
+                          }
                           onChange={(e) => handleFieldChange(field.id, e.target.value)}
                           placeholder={field.placeholder}
                         />

apps/sim/app/workspace/[workspaceId]/knowledge/[id]/components/connector-selector-field/connector-selector-field.tsx

@@ -3,17 +3,21 @@
 import { useMemo } from 'react'
 import { Combobox, type ComboboxOption, Loader } from '@/components/emcn'
 import { SELECTOR_CONTEXT_FIELDS } from '@/lib/workflows/subblocks/context'
+import type {
+  ConfigFieldMap,
+  ConfigFieldValue,
+} from '@/app/workspace/[workspaceId]/knowledge/[id]/hooks/use-connector-config-fields'
 import { getDependsOnFields } from '@/blocks/utils'
 import type { ConnectorConfigField } from '@/connectors/types'
 import type { SelectorContext, SelectorKey } from '@/hooks/selectors/types'
 import { useSelectorOptions } from '@/hooks/selectors/use-selector-query'
 
 interface ConnectorSelectorFieldProps {
   field: ConnectorConfigField & { selectorKey: SelectorKey }
-  value: string
-  onChange: (value: string) => void
+  value: ConfigFieldValue
+  onChange: (value: ConfigFieldValue) => void
   credentialId: string | null
-  sourceConfig: Record<string, string>
+  sourceConfig: ConfigFieldMap
   configFields: ConnectorConfigField[]
   canonicalModes: Record<string, 'basic' | 'advanced'>
   disabled?: boolean
@@ -29,6 +33,8 @@ export function ConnectorSelectorField({
   canonicalModes,
   disabled,
 }: ConnectorSelectorFieldProps) {
+  const isMulti = Boolean(field.multi)
+
   const context = useMemo<SelectorContext>(() => {
     const ctx: SelectorContext = {}
     if (credentialId) ctx.oauthCredential = credentialId
@@ -73,11 +79,34 @@ export function ConnectorSelectorField({
     )
   }
 
+  if (isMulti) {
+    const multiValues = Array.isArray(value) ? value : value ? [value] : []
+    return (
+      <Combobox
+        multiSelect
+        options={comboboxOptions}
+        multiSelectValues={multiValues}
+        onMultiSelectChange={(values) => onChange(values)}
+        searchable
+        searchPlaceholder={`Search ${field.title.toLowerCase()}...`}
+        placeholder={
+          !credentialId
+            ? 'Connect an account first'
+            : !depsResolved
+              ? `Select ${getDependencyLabel(field, configFields)} first`
+              : field.placeholder || `Select ${field.title.toLowerCase()}`
+        }
+        disabled={disabled || !credentialId || !depsResolved}
+      />
+    )
+  }
+
+  const singleValue = Array.isArray(value) ? value[0] : value
   return (
     <Combobox
       options={comboboxOptions}
-      value={value || undefined}
-      onChange={onChange}
+      value={singleValue || undefined}
+      onChange={(next) => onChange(next)}
       searchable
       searchPlaceholder={`Search ${field.title.toLowerCase()}...`}
       placeholder={
@@ -96,18 +125,28 @@ function resolveDepValue(
   depFieldId: string,
   configFields: ConnectorConfigField[],
   canonicalModes: Record<string, 'basic' | 'advanced'>,
-  sourceConfig: Record<string, string>
+  sourceConfig: ConfigFieldMap
 ): string {
   const depField = configFields.find((f) => f.id === depFieldId)
-  if (!depField?.canonicalParamId) return sourceConfig[depFieldId] ?? ''
+  /**
+   * For multi-value parent fields, pass all selected values to dependent
+   * selectors as a comma-joined string so the downstream selector can load
+   * options across every selected parent (e.g. Linear projects across multiple
+   * selected teams). Single-value parents pass through unchanged.
+   */
+  const readDep = (raw: ConfigFieldValue | undefined): string => {
+    if (Array.isArray(raw)) return raw.join(',')
+    return raw ?? ''
+  }
+  if (!depField?.canonicalParamId) return readDep(sourceConfig[depFieldId])
 
   const activeMode = canonicalModes[depField.canonicalParamId] ?? 'basic'
-  if (depField.mode === activeMode) return sourceConfig[depFieldId] ?? ''
+  if (depField.mode === activeMode) return readDep(sourceConfig[depFieldId])
 
   const activeField = configFields.find(
     (f) => f.canonicalParamId === depField.canonicalParamId && f.mode === activeMode
   )
-  return activeField ? (sourceConfig[activeField.id] ?? '') : (sourceConfig[depFieldId] ?? '')
+  return activeField ? readDep(sourceConfig[activeField.id]) : readDep(sourceConfig[depFieldId])
 }
 
 function getDependencyLabel(