docs: record live deploy under chess.sethpc.xyz/duplicate/

CLAUDE.md: phase moves from "local sandbox" to deployed; adds the
operations recipe (tar pipe to /var/www/duplicate-chess on Caddy CT 600).
DECISIONS.md: supersedes the "Deployment deferred" entry with the
chosen architecture — Caddy handle_path serving the static build under
the chess.sethpc.xyz origin, rather than a separate subdomain or a
Fastify static mount.

CLAUDE.md

@@ -27,10 +27,16 @@ inventor's own point is that it cannot be understood from prose alone.
 
 ## Current State
 
-- **Phase:** v1 **implemented and merged to `main`** — the engine and the compass
-  UI are complete. Not yet manually browser-tested.
+- **Phase:** v1 **implemented, merged, and deployed** (2026-05-19) as a third
+  game-mode card ("under development") on `chess.sethpc.xyz`. The engine and the
+  compass UI are complete; not yet manually browser-tested by Seth.
 - **Repo:** `git.sethpc.xyz/Seth/duplicate_chess` (`main`).
-- **Deploy target:** n/a — runs locally (`pnpm install && pnpm dev`).
+- **Live URL:** https://chess.sethpc.xyz/duplicate/ — static bundle on Caddy CT 600
+  at `/var/www/duplicate-chess/`. Independent of the blind_chess server (CT 690);
+  duplicate redeploys never restart blind_chess. Vite is built with
+  `base: '/duplicate/'`; the Caddy `chess.sethpc.xyz` block has a
+  `handle_path /duplicate/*` that strips the prefix and serves static files.
+- **Local dev:** `pnpm install && pnpm dev`.
 - **Stack:** Vite + Svelte 5 + TypeScript, `chess.js`. Single package; engine in
   `src/engine/` (pure, DOM-free; 27 vitest tests passing), UI in `src/lib/`.
 - **Commands:** `pnpm dev` (run) · `pnpm build` · `pnpm test` (engine) ·
@@ -41,6 +47,18 @@ inventor's own point is that it cannot be understood from prose alone.
   keep); `deserialize` trusts the `player` field on replay; move log has no round
   numbers. See the latest handoff in `.claude/handoffs/`.
 
+## Operations
+
+- **Health:** `curl https://chess.sethpc.xyz/duplicate/` returns the served `index.html`.
+- **Redeploy** (after a `pnpm build`):
+  ```
+  cd dist && tar -cf - . | ssh root@192.168.0.185 \
+    'cd /var/www/duplicate-chess && rm -rf assets favicon.svg icons.svg index.html && tar -xf -'
+  ```
+  No Caddy reload needed for content changes; `file_server` serves live from disk.
+- **Caddy config:** the `chess.sethpc.xyz` block in `/etc/caddy/Caddyfile` on CT 600
+  (192.168.0.185). The `handle_path /duplicate/*` sub-block governs this app.
+
 ## Conventions
 
 - Inherits homelab conventions from `~/bin/CLAUDE.md` (gitea CLI, conventional

DECISIONS.md

@@ -27,5 +27,5 @@ Format: `YYYY-MM-DD: <decision> — <why>`
 2026-05-19: AI opponents — deferred; the sandbox is operator-driven.
 2026-05-19: Free position editor — rejected for v1; play-from-start + history scrubbing keeps every shown position reachable by legal play, preserving the "every board is real chess" invariant.
 2026-05-19: Counter-rotating pieces upright on the diamonds — rejected; pieces rotate with their board so each player's army faces their seat (the point of the compass).
-2026-05-19: Deployment behind Caddy — deferred; v1 runs locally, the static build can be hosted later trivially.
+2026-05-19: Deployment behind Caddy — deferred; v1 runs locally, the static build can be hosted later trivially. **Superseded 2026-05-19 (later same day):** deployed under `chess.sethpc.xyz/duplicate/` as a 3rd "under development" card on the blind_chess landing. Vite built with `base: '/duplicate/'`; Caddy `handle_path /duplicate/*` strips the prefix and serves `/var/www/duplicate-chess/` on CT 600. Chosen over a separate subdomain so Andrew sees both games from one URL, and over a Fastify static mount so duplicate redeploys never restart blind_chess.
 2026-05-19: A separate "dual view" of the on-move player's two boards — rejected; the compass is the whole UI, with the triple-highlight happening directly on it.