refactor: clean up codebase — remove legacy references, optimize dockerfile, prune .env.example, simplify CI/CD

- Traefik: remove asephstech/asephscloud SSL certs, fix api.insecure, add ping healthcheck
- .env.example: prune from 145 to 30 vars (remove Firebase, Discord, Coolify, etc.)
- scraper.Dockerfile: remove Node.js & Chromium from runtime, add healthcheck
- CI/CD: remove orphan container ref, commented blocks, fix lint workflow
- infra: remove mysql config (no active service), clean up middleware config
- root: remove .nvmrc (dup), renovate.json (use dependabot), simplify Makefile
- scripts: fix legacy package refs, simplify update-deps to use bun
- docs: remove stale handoff-log, quality-gates, superpowers designs, archived files
- compose: add healthchecks to traefik, redis, and scraper-api services

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

Makefile

@@ -1,4 +1,4 @@
-.PHONY: help dev lint format test clean update-submodules deploy init-submodules status
+.PHONY: help dev update-submodules deploy init-submodules status
 
 SHELL := /bin/bash
 
@@ -8,16 +8,6 @@ help: ## Show this help
 dev: ## Start development infrastructure (Redis etc.)
 	docker compose -f infra/compose/shared.yml up -d
 
-lint: ## Run Biome linter
-	biome lint .
-
-format: ## Format code with Biome
-	biome format --write .
-
-clean: ## Clean build artifacts
-	rm -rf apps/*/dist apps/*/.next apps/*/target 2>/dev/null || true
-	rm -rf node_modules 2>/dev/null || true
-
 update-submodules: ## Update all git submodules to latest remote
 	git submodule update --remote --merge --recursive