chore(infra): remove tools app — Caddy route, README, add-new-app docs

Project tools dihapus (2026-08-28): GitHub repo + local source + VPS deploy
(3 systemd units + Nix profiles) sudah dihapus. Caddy route
tools.asepharyana.my.id removed; README + docs updated.
ADR 0003 dibiarkan sebagai catatan historis rename.

README.md

@@ -12,11 +12,10 @@ Reverse-proxy & infrastructure config for [orangevps](https://asepharyana.my.id)
 |------|-----------|-------------|
 | [`asepharyana/hub`](https://github.com/asepharyana/hub) | Portfolio SPA (Next.js, port 4003, dashboard) | `hub` |
 | [`asepharyana/scraper`](https://github.com/asepharyana/scraper) | Rust/Axum scraper API (port 4091) | `scraper` |
-| [`asepharyana/tools`](https://github.com/asepharyana/tools) | Tools: Rust gateway/workers + Next.js frontend (3500/3501) | `tools-gateway`, `tools-workers`, `tools-frontend` |
 | [`asepharyana/llm-api`](https://github.com/asepharyana/llm-api) | Rust LLM API (llama.cpp, port 8080) | `llm-api` |
 
 Tiap repo punya `flake.nix` + `.github/workflows/deploy.yml` sendiri:
-`nix build .#<pkg>` → `nix copy ssh://` → `nix-env --profile` → `systemctl restart`.
+`nix build .#<pkg>` → **push ke Attic binary cache** (`attic.asepharyana.my.id/asepharyana`) → VPS substitute via `nix-store --realise` → `nix-env --profile` → `systemctl restart`.
 Push ke `main` (atau `workflow_dispatch`) langsung deploy; tidak ada lagi pointer submodule.
 
 ## Infra di Repo Ini

docs/add-new-app.md

@@ -4,7 +4,7 @@ Panduan untuk menambahkan service baru di ekosistem `asepharyana/infra` (2026-08
 
 ## Prinsip
 
-- **Aplikasi hidup di repo sendiri** (`hub`, `scraper`, `tools`, `llm-api`) dengan
+- **Aplikasi hidup di repo sendiri** (`hub`, `scraper`, `llm-api`) dengan
   `flake.nix` + `.github/workflows/deploy.yml` mandiri. Repo infra TIDAK berisi kode app.
 - Repo infra (`asepharyana/infra`) hanya mengatur **reverse proxy & config VPS**.
 

infra/caddy/Caddyfile.prod

@@ -59,10 +59,6 @@ ai.asepharyana.my.id, ai.asepharyana.web.id {
 }
 
 9router.asepharyana.my.id {
-	import proxy 4007
-}
-
-9router.asepharyana.my.id {
 	# LLM streaming: 9router combo models punya TTFT sampe 30-40s (deepseek,
 	# fallback chain). Default (proxy) response_header_timeout 30s / read 60s
 	# bikin false-positive 504 walau 9router masih ngolah. Longgarkan khusus