fix(review): address PR #101 review findings (dead DI, docs)

- ai-chat: drop the unused pagePermissionRepo injection from
  PublicShareChatToolsService (its only use moved into
  ShareService.resolveReadableSharePage); update all 5 positional
  test construction sites to match the 3-arg constructor.
- env: correct the anonymous share-AI per-workspace cap comment —
  the limiter FAILS CLOSED on Redis failure (#62), not open.
- docs: sync README.ru.md with README.md — move "Page templates"
  from Planned to Done and drop the dead plan-doc link.

Remaining test-coverage gaps tracked as #102, #103, #104, #105, #106.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/server/src/core/ai-chat/public-share-chat.spec.ts

@@ -533,7 +533,6 @@ describe('PublicShareChatToolsService share scoping', () => {
       shareService as never,
       {} as never,
       {} as never,
-      {} as never,
     );
 
     const tools = svc.forShare('THIS-SHARE', 'ws-1');
@@ -566,7 +565,6 @@ describe('PublicShareChatToolsService share scoping', () => {
       shareService as never,
       {} as never,
       {} as never,
-      {} as never,
     );
 
     const tools = svc.forShare('THIS-SHARE', 'ws-1');
@@ -591,7 +589,6 @@ describe('PublicShareChatToolsService share scoping', () => {
       {} as never,
       searchService as never,
       {} as never,
-      {} as never,
     );
     const tools = svc.forShare('THIS-SHARE', 'ws-1');
     const searchSharePages = tools.searchSharePages as {
@@ -732,7 +729,6 @@ describe('public-share assistant boundary locks (red-team regression guards)', (
       shareService as never,
       {} as never,
       {} as never,
-      {} as never,
     );
     const tools = svc.forShare('FORGED-SHARE', 'ws-1');
     const getSharePage = tools.getSharePage as {

apps/server/src/core/ai-chat/tools/public-share-chat-tools.service.spec.ts

@@ -24,14 +24,12 @@ describe('PublicShareChatToolsService.forShare', () => {
     };
     const searchService = { searchPage: over.searchPage ?? jest.fn() };
     const pageRepo = { findById: over.findById ?? jest.fn() };
-    const pagePermissionRepo = { hasRestrictedAncestor: jest.fn() };
     const svc = new PublicShareChatToolsService(
       shareService as never,
       searchService as never,
       pageRepo as never,
-      pagePermissionRepo as never,
     );
-    return { svc, shareService, searchService, pageRepo, pagePermissionRepo };
+    return { svc, shareService, searchService, pageRepo };
   }
 
   describe('listSharePages', () => {

apps/server/src/core/ai-chat/tools/public-share-chat-tools.service.ts

@@ -4,7 +4,6 @@ import { z } from 'zod';
 import { ShareService } from '../../share/share.service';
 import { SearchService } from '../../search/search.service';
 import { PageRepo } from '@docmost/db/repos/page/page.repo';
-import { PagePermissionRepo } from '@docmost/db/repos/page/page-permission.repo';
 import { jsonToMarkdown } from '../../../collaboration/collaboration.util';
 
 /**
@@ -35,7 +34,6 @@ export class PublicShareChatToolsService {
     private readonly shareService: ShareService,
     private readonly searchService: SearchService,
     private readonly pageRepo: PageRepo,
-    private readonly pagePermissionRepo: PagePermissionRepo,
   ) {}
 
   /**