Initial commit: Nosterm client (terminal-style Nostr chat SPA)

.env.example

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+# Nosterm client configuration. Copy to `.env` and edit:
+#
+#   cp .env.example .env
+#
+# Nothing here is secret — every value is either browser-visible (PUBLIC_*, baked
+# into the client bundle at build time) or plain deployment wiring. Do NOT put
+# private keys or credentials in this file.
+
+# --- Runtime (docker-compose, no rebuild needed) ---------------------------
+
+# Relay websocket url(s) the client preloads, comma-separated. Written to
+# /config.json by the container entrypoint on startup. For a same-origin home
+# relay proxied by Caddy use "ws://localhost:8080/relay". Leave blank to start
+# with no default relays.
+NOSTERM_DEFAULT_RELAYS=
+
+# Upstream address for Caddy's optional /relay proxy. Only used when the client
+# reaches a relay at ws://<host>/relay. Harmless if unused.
+RELAY_UPSTREAM=relay:3334
+
+# --- Build-time (PUBLIC_*, baked into the client bundle) -------------------
+
+# Fallback relay list used only when no runtime /config.json relays are set.
+PUBLIC_DEFAULT_RELAYS=
+
+# Default UI theme id.
+PUBLIC_DEFAULT_THEME=nord
+
+# Max lines kept in the terminal scrollback.
+PUBLIC_MAX_TERMINAL_ENTRIES=1000
+
+# Max characters allowed in a single message.
+PUBLIC_MAX_MESSAGE_LENGTH=2000
+
+# Max messages cached per room in IndexedDB (older ones get pruned).
+PUBLIC_MAX_CACHED_MESSAGES_PER_ROOM=500