refactor: dead-code cleanup + drop the lib/types shim (slice 9)

- Delete orphaned components (theme-provider, task-claim-button), the unused
  roleDisplayName helper, the fully-dead cleanupRateLimits, the 6 never-imported
  validation schemas (signIn/signUp/createSpace/joinSpace — a replaced auth flow;
  proposalStatuses; updateAreaLeadRoleSchema).
- Migrate all @/lib/types importers to the canonical @/types/domain and delete
  the compatibility shim.

tsc 0, 635 tests green, lint clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/role-labels.ts

@@ -47,8 +47,3 @@ export async function getRoleLabelMap(
   return map
 }
 
-export function roleDisplayName(map: Record<string, RoleLabel> | null | undefined, role: string): string {
-  if (map && map[role]) return map[role].name
-  const d = DEFAULT_ROLE_LABELS[role as BuiltinRole]
-  return d ? d.name : role
-}

lib/security.ts

@@ -139,18 +139,6 @@ export function checkRateLimit(
   return { allowed: true, remaining: maxRequests - entry.count, resetIn: entry.resetTime - now }
 }
 
-/**
- * Clear expired rate limit entries (call periodically)
- */
-export function cleanupRateLimits(): void {
-  const now = Date.now()
-  for (const [key, entry] of rateLimitStore.entries()) {
-    if (now > entry.resetTime) {
-      rateLimitStore.delete(key)
-    }
-  }
-}
-
 /**
  * Validate content length
  */

lib/types.ts

@@ -1,7 +0,0 @@
-/**
- * Compatibility shim. The hand-written domain types moved to `types/domain/*`
- * (kept separate from the generated `types/database.ts`). This re-export keeps
- * the `@/lib/types` specifier working for existing importers; prefer importing
- * from `@/types/domain` in new code.
- */
-export * from '@/types/domain'

lib/validations/auth.ts

@@ -1,30 +0,0 @@
-import { z } from 'zod'
-import { emailField } from './primitives'
-
-export const signInSchema = z.object({
-  email: emailField(),
-  password: z.string().min(1, 'Password is required'),
-})
-
-export const signUpSchema = z.object({
-  email: emailField(),
-  password: z.string().min(8, 'Password must be at least 8 characters'),
-  fullName: z.string().min(1, 'Full name is required').max(100, 'Name is too long'),
-  action: z.enum(['create', 'join']),
-  spaceName: z.string().max(100).optional(),
-  spaceSlug: z.string().regex(/^[a-z0-9]+$/, 'Slug must be lowercase letters and numbers only').max(50).optional(),
-  city: z.string().max(100).optional(),
-  inviteCode: z.string().max(20).optional(),
-})
-
-export const createSpaceSchema = z.object({
-  spaceName: z.string().min(1, 'Space name is required').max(100, 'Name is too long'),
-  spaceSlug: z.string().min(1, 'Slug is required').max(50).regex(/^[a-z0-9]+$/, 'Slug must be lowercase letters and numbers only'),
-  spaceCity: z.string().max(100).optional(),
-  displayName: z.string().min(1, 'Display name is required').max(100),
-})
-
-export const joinSpaceSchema = z.object({
-  inviteCode: z.string().min(1, 'Invite code is required').max(20),
-  displayName: z.string().min(1, 'Display name is required').max(100),
-})

lib/validations/governance.ts

@@ -4,7 +4,6 @@ import { flexibleDateTime } from './primitives'
 // ─── Governance: proposals ───────────────────────────────────────────────────
 
 export const proposalTypes = ['bylaw_change','board_action','membership_vote','advisory_poll','recall','budget'] as const
-export const proposalStatuses = ['draft','open','decided','withdrawn','expired'] as const
 export const thresholdRules = ['simple_majority','two_thirds','three_fourths','unanimous'] as const
 export const votePositions = ['yes','no','abstain','recused'] as const
 

lib/validations/index.ts

@@ -1,5 +1,4 @@
 export * from './primitives'
-export * from './auth'
 export * from './tasks'
 export * from './projects'
 export * from './members'

lib/validations/permissions.ts

@@ -24,11 +24,6 @@ export const createAreaLeadRoleSchema = z.object({
   color: z.string().max(20).optional().nullable(),
 })
 
-export const updateAreaLeadRoleSchema = z.object({
-  name: z.string().min(1).max(100).optional(),
-  color: z.string().max(20).optional().nullable(),
-})
-
 export const assignAreaLeadSchema = z.object({
   area_lead_role_id: z.string().uuid('Invalid role ID'),
   member_id: z.string().uuid('Invalid member ID'),