feat: LinkedIn profile search engine (Django + React + Elasticsearch + ELK)

Full-stack implementation of the Cyberyan full-stack trial task.

Backend (Django 5 / DRF)
- Normalised PostgreSQL model (Profile, Company, School, Skill, Experience,
  Education) as the source of truth, with GIN + trigram indexes.
- Self-healing CSV reader: the supplied export carries an injected watermark
  column, missing columns, rows split by broken quoting and a duplicated
  header. A signature-scored Needleman-Wunsch alignment reconstructs 284 clean
  records out of 336 physical rows; only 10 rows parse correctly without it.
- Pluggable search layer (Strategy): Elasticsearch by default, PostgreSQL
  full-text search as a fallback selected by a single environment variable.
- Keyword search with per-field boosts, fuzziness and phrase boosting, six
  faceted filters (OR within a filter, AND across filters), an experience
  range, four sort orders, highlighting and facet aggregations.
- JWT auth with rotation + blacklist, three roles, PII masking, scoped rate
  limits, a single error envelope, OpenAPI schema and health probes.

Frontend (React 18 / TypeScript / Vite)
- Debounced search with type-ahead, faceted filter panel, result cards,
  profile drawer, URL-synced search state, automatic token refresh.
- Highlight snippets rendered without dangerouslySetInnerHTML.

Infrastructure
- Hardened multi-stage images (non-root, read-only rootfs, healthchecks).
- docker-compose for the full stack plus dev and production overlays.
- ELK: structured JSON logs shipped asynchronously to Logstash, routed per
  event type, with a composable index template and a Kibana setup script.

Quality
- 61 backend tests (85% coverage), ruff/black/bandit/mypy, ESLint + tsc,
  GitHub Actions running lint, tests and both image builds.
- Persian documentation: README plus architecture, search, API, data,
  security and operations guides.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GnFo6fNaHCTAkJbfcdkqtG

backend/apps/profiles/admin.py

@@ -0,0 +1,72 @@
+from django.contrib import admin
+
+from apps.profiles.models import (
+    Company,
+    Education,
+    Experience,
+    Profile,
+    ProfileSkill,
+    School,
+    Skill,
+)
+
+
+class ExperienceInline(admin.TabularInline):
+    model = Experience
+    extra = 0
+    fields = ("title", "company_name", "start_date", "end_date", "is_primary")
+    readonly_fields = fields
+    can_delete = False
+    show_change_link = True
+
+
+class EducationInline(admin.TabularInline):
+    model = Education
+    extra = 0
+    fields = ("school_name", "degrees", "majors", "end_date")
+    readonly_fields = fields
+    can_delete = False
+
+
+class ProfileSkillInline(admin.TabularInline):
+    model = ProfileSkill
+    extra = 0
+    autocomplete_fields = ("skill",)
+
+
+@admin.register(Profile)
+class ProfileAdmin(admin.ModelAdmin):
+    list_display = (
+        "full_name", "job_title", "current_company", "location_country", "years_experience",
+    )  # fmt: skip
+    list_filter = ("location_country", "job_title_role", "industry")
+    search_fields = ("full_name", "job_title", "skills_text", "companies_text")
+    list_select_related = ("current_company",)
+    inlines = (ProfileSkillInline, ExperienceInline, EducationInline)
+    readonly_fields = (
+        "created_at",
+        "updated_at",
+        "skills_text",
+        "companies_text",
+        "education_text",
+    )
+
+
+@admin.register(Skill)
+class SkillAdmin(admin.ModelAdmin):
+    list_display = ("name", "slug", "profile_count")
+    search_fields = ("name", "slug")
+    ordering = ("-profile_count",)
+
+
+@admin.register(Company)
+class CompanyAdmin(admin.ModelAdmin):
+    list_display = ("name", "industry", "size", "country")
+    search_fields = ("name",)
+    list_filter = ("size", "industry")
+
+
+@admin.register(School)
+class SchoolAdmin(admin.ModelAdmin):
+    list_display = ("name", "type", "country")
+    search_fields = ("name",)