docs: fix placeholder URLs in QUICKSTART; add committed example scripts

QUICKSTART.md had the author's personal domain as the example anchor URL
(wss://waste.dev.xplwd.com/ws) which would confuse anyone reading it.
Replaced with wss://YOUR_ANCHOR_DOMAIN/ws and added a new Option 3
section explaining the example scripts.

Added committed *.example versions of the four local-workflow scripts
(launch-tui, launch-web, deploy-web, serve-web). The real filenames are
gitignored so local edits (HOST, ANCHOR, etc.) are never accidentally
committed; the .example files serve as templates users copy once.
Each script fails fast if the placeholder URL/host is still set.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

launch-tui.sh.example

@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+# launch-tui.sh — build and launch the TUI against a remote anchor.
+# Starts a local daemon then opens the Bubble Tea terminal UI.
+#
+# SETUP: copy this file to launch-tui.sh (gitignored) and set ANCHOR below.
+#
+# Usage:
+#   ./launch-tui.sh
+#   ALIAS=alice NETWORK=friends ./launch-tui.sh
+#
+# Optional env vars (all have defaults):
+#   ANCHOR      anchor WebSocket URL          (required — edit below)
+#   NETWORK     network name to join          (default: "friends")
+#   ALIAS       display name                  (default: $USER)
+#   DATA_DIR    identity + message store dir  (default: ~/.waste-$ALIAS)
+#   IPC_PORT    local daemon IPC port         (default: 17337)
+#   SHARE_DIR   directory to share with peers (optional)
+
+set -euo pipefail
+
+ANCHOR="${ANCHOR:-wss://YOUR_ANCHOR_DOMAIN/ws}"   # ← edit this
+
+NETWORK="${NETWORK:-friends}"
+ALIAS="${ALIAS:-${USER:-anon}}"
+DATA_DIR="${DATA_DIR:-${HOME}/.waste-${ALIAS}}"
+
+_DEFAULT_ALIAS="${USER:-anon}"
+if [ "${ALIAS}" = "${_DEFAULT_ALIAS}" ]; then
+    IPC_PORT="${IPC_PORT:-17337}"
+else
+    _HASH=$(printf '%d' "0x$(printf '%s' "$ALIAS" | md5sum | cut -c1-4)")
+    IPC_PORT="${IPC_PORT:-$(( 17400 + _HASH % 1000 ))}"
+fi
+
+SHARE_DIR="${SHARE_DIR:-}"
+
+RED='\033[0;31m'; GREEN='\033[0;32m'; DIM='\033[2m'; BOLD='\033[1m'; RESET='\033[0m'
+
+if [[ "$ANCHOR" == *YOUR_ANCHOR_DOMAIN* ]]; then
+    echo -e "${RED}error: edit ANCHOR in this script (or export ANCHOR=wss://... before running)${RESET}" >&2
+    exit 1
+fi
+
+mkdir -p "$DATA_DIR"
+
+echo ""
+echo -e "${BOLD}waste TUI${RESET}"
+echo -e "${DIM}anchor  : ${BOLD}${ANCHOR}${RESET}"
+echo -e "${DIM}network : ${BOLD}${NETWORK}${RESET}"
+echo -e "${DIM}alias   : ${BOLD}${ALIAS}${RESET}"
+echo -e "${DIM}data    : ${DATA_DIR}${RESET}"
+[ -n "$SHARE_DIR" ] && echo -e "${DIM}share   : ${SHARE_DIR}${RESET}"
+echo ""
+
+echo -e "${DIM}building binaries…${RESET}"
+go build -o /tmp/waste-daemon-run ./cmd/daemon
+go build -o /tmp/waste-tui-run    ./cmd/tui
+echo -e "${GREEN}✓ built${RESET}"
+echo ""
+
+existing=$(lsof -ti tcp:"$IPC_PORT" 2>/dev/null || true)
+[ -n "$existing" ] && kill "$existing" 2>/dev/null && sleep 0.3 || true
+
+echo -e "${DIM}starting daemon on :${IPC_PORT}…${RESET}"
+WS_PORT=$(( IPC_PORT + 1 ))
+/tmp/waste-daemon-run \
+    -alias "$ALIAS" -data-dir "$DATA_DIR" \
+    -ipc-port "$IPC_PORT" -ws-port "$WS_PORT" \
+    -anchor "$ANCHOR" \
+    2>/tmp/waste-daemon.log &
+DAEMON_PID=$!
+
+n=0
+while ! nc -z 127.0.0.1 "$IPC_PORT" 2>/dev/null; do
+    sleep 0.1; n=$(( n + 1 ))
+    [ "$n" -gt 80 ] && echo -e "${RED}daemon failed — check /tmp/waste-daemon.log${RESET}" >&2 && exit 1
+done
+echo -e "${GREEN}✓ daemon started (pid ${DAEMON_PID})${RESET}"
+
+sleep 0.3
+if [ -n "$SHARE_DIR" ]; then
+    JOIN=$(jq -cn --arg net "$NETWORK" --arg dir "$SHARE_DIR" \
+        '{"type":"join_network","network_name":$net,"share_dir":$dir}')
+else
+    JOIN=$(jq -cn --arg net "$NETWORK" '{"type":"join_network","network_name":$net}')
+fi
+echo "$JOIN" | nc -q 0 127.0.0.1 "$IPC_PORT" >/dev/null 2>&1 || true
+echo -e "${DIM}joined network: ${BOLD}${NETWORK}${RESET}"
+
+cleanup() { kill "$DAEMON_PID" 2>/dev/null || true; }
+trap cleanup EXIT INT TERM
+
+echo ""
+echo -e "${BOLD}launching TUI${RESET} — ${DIM}ctrl+c to quit${RESET}"
+echo ""
+exec /tmp/waste-tui-run -ipc "$IPC_PORT" -network "$NETWORK"