feat: foldable PROJECTS section in sidebar with color support

- Add `color` (text) and `archivedAt` (timestamp) columns to projects table
- Add PROJECT_COLORS palette constant (10 colors) in shared package
- Add color/archivedAt to Project type interface and Zod validators
- Auto-assign next available color from palette on project creation
- New SidebarProjects component with:
  - Collapsible PROJECTS header above WORK section
  - Caret toggle visible on hover (left of header)
  - Always-visible plus button (right of header) opens NewProjectDialog
  - Lists non-archived projects with colored rounded squares
  - Active project highlighted based on URL match
- Remove Projects nav item from WORK section in sidebar

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/shared/src/index.ts

@@ -1,5 +1,8 @@
 export {
   COMPANY_STATUSES,
+  DEPLOYMENT_MODES,
+  DEPLOYMENT_EXPOSURES,
+  AUTH_BASE_URL_MODES,
   AGENT_STATUSES,
   AGENT_ADAPTER_TYPES,
   AGENT_ROLES,
@@ -8,6 +11,7 @@ export {
   GOAL_LEVELS,
   GOAL_STATUSES,
   PROJECT_STATUSES,
+  PROJECT_COLORS,
   APPROVAL_TYPES,
   APPROVAL_STATUSES,
   SECRET_PROVIDERS,
@@ -17,7 +21,18 @@ export {
   WAKEUP_TRIGGER_DETAILS,
   WAKEUP_REQUEST_STATUSES,
   LIVE_EVENT_TYPES,
+  PRINCIPAL_TYPES,
+  MEMBERSHIP_STATUSES,
+  INSTANCE_USER_ROLES,
+  INVITE_TYPES,
+  INVITE_JOIN_TYPES,
+  JOIN_REQUEST_TYPES,
+  JOIN_REQUEST_STATUSES,
+  PERMISSION_KEYS,
   type CompanyStatus,
+  type DeploymentMode,
+  type DeploymentExposure,
+  type AuthBaseUrlMode,
   type AgentStatus,
   type AgentAdapterType,
   type AgentRole,
@@ -35,6 +50,14 @@ export {
   type WakeupTriggerDetail,
   type WakeupRequestStatus,
   type LiveEventType,
+  type PrincipalType,
+  type MembershipStatus,
+  type InstanceUserRole,
+  type InviteType,
+  type InviteJoinType,
+  type JoinRequestType,
+  type JoinRequestStatus,
+  type PermissionKey,
 } from "./constants.js";
 
 export type {
@@ -68,6 +91,11 @@ export type {
   DashboardSummary,
   ActivityEvent,
   SidebarBadges,
+  CompanyMembership,
+  PrincipalPermissionGrant,
+  Invite,
+  JoinRequest,
+  InstanceUserRoleGrant,
   EnvBinding,
   AgentEnvConfig,
   CompanySecret,
@@ -139,9 +167,19 @@ export {
   createCostEventSchema,
   updateBudgetSchema,
   createAssetImageMetadataSchema,
+  createCompanyInviteSchema,
+  acceptInviteSchema,
+  listJoinRequestsQuerySchema,
+  updateMemberPermissionsSchema,
+  updateUserCompanyAccessSchema,
   type CreateCostEvent,
   type UpdateBudget,
   type CreateAssetImageMetadata,
+  type CreateCompanyInvite,
+  type AcceptInvite,
+  type ListJoinRequestsQuery,
+  type UpdateMemberPermissions,
+  type UpdateUserCompanyAccess,
 } from "./validators/index.js";
 
 export { API_PREFIX, API } from "./api.js";
@@ -153,6 +191,7 @@ export {
   databaseConfigSchema,
   loggingConfigSchema,
   serverConfigSchema,
+  authConfigSchema,
   secretsConfigSchema,
   storageConfigSchema,
   storageLocalDiskConfigSchema,
@@ -163,6 +202,7 @@ export {
   type DatabaseConfig,
   type LoggingConfig,
   type ServerConfig,
+  type AuthConfig,
   type StorageConfig,
   type StorageLocalDiskConfig,
   type StorageS3Config,