feat: Implement Phase 10 support and recommendations features

- Added models for support messages, SLA policies, tickets, ticket events, and ticket links.
- Created routes for help, help admin, newsletter, recommendations, and support for both customer and admin.
- Developed services for help, marketing (newsletter), and recommendations.
- Introduced support service for ticket management, including creation, replies, transitions, and attachments.
- Added validation schemas for support recommendations and ticket management.
- Implemented a cron job for support reconciliation and recommendation cleanup.
- Created migration for new support and recommendation database tables.
- Added unit tests for validation and policy checks related to Phase 10 features.

app/controllers/help.controller.js

@@ -0,0 +1 @@
+const db=require("../models"),help=require("../services/help/help.service"),{resolveLocale}=require("../services/catalogue/locale.service");const locale=req=>resolveLocale(req);exports.categories=async(req,res,next)=>{try{res.json({success:true,data:await help.categories(locale(req))});}catch(e){next(e);}};exports.category=async(req,res,next)=>{try{const row=await db.HelpCategory.findOne({where:{slug:req.params.slug,status:"ACTIVE"}});if(!row)return res.status(404).json({success:false,error:{code:"NOT_FOUND",message:"Help category not found"}});res.json({success:true,data:{category:(await help.categories(locale(req))).find(x=>x.id===row.id),articles:await help.articles({locale:locale(req),categoryId:row.id})}});}catch(e){next(e);}};exports.articles=async(req,res,next)=>{try{res.json({success:true,data:await help.articles({locale:locale(req),categoryId:req.query.category,featured:req.query.featured==null?undefined:req.query.featured==="true",limit:Math.min(+req.query.limit||20,50)})});}catch(e){next(e);}};exports.article=async(req,res,next)=>{try{const a=await db.HelpArticle.findOne({where:{slug:req.params.slug,status:"PUBLISHED"}});if(!a)return res.status(404).json({success:false,error:{code:"NOT_FOUND",message:"Help article not found"}});const tr=help.pick(await db.HelpArticleTranslation.findAll({where:{article_id:a.id}}),locale(req));res.json({success:true,data:{id:a.id,slug:a.slug,categoryId:a.category_id,type:a.article_type,title:tr?.title||null,summary:tr?.summary||null,body:tr?.body||null,locale:tr?.locale||locale(req),isFeatured:a.is_featured,publishedAt:a.published_at}});}catch(e){next(e);}};exports.search=async(req,res,next)=>{try{const q=String(req.query.q||"").trim();if(q.length<2||q.length>100)return res.status(400).json({success:false,error:{code:"INVALID_QUERY",message:"q must contain 2-100 characters"}});res.json({success:true,data:await help.articles({locale:locale(req),q,limit:Math.min(+req.query.limit||20,50)})});}catch(e){next(e);}};