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-web.sh.example

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+# launch-web.sh — start the daemon and open the web UI Vite dev server.
+# For local development / daemon-mode browsing.
+#
+# SETUP: copy this file to launch-web.sh (gitignored) and set ANCHOR below.
+#
+# Usage:
+#   ./launch-web.sh
+#   ALIAS=alice NETWORK=friends ./launch-web.sh
+
+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-${ALIAS}}"
+IPC_PORT="${IPC_PORT:-17337}"
+WS_PORT=$(( IPC_PORT + 1 ))
+
+if [[ "$ANCHOR" == *YOUR_ANCHOR_DOMAIN* ]]; then
+    echo "error: edit ANCHOR in this script (or export ANCHOR=wss://... before running)" >&2
+    exit 1
+fi
+
+PIDS=()
+cleanup() {
+    for pid in "${PIDS[@]:-}"; do kill "$pid" 2>/dev/null || true; done
+    wait 2>/dev/null || true
+}
+trap cleanup EXIT INT TERM
+
+for port in "$IPC_PORT" "$WS_PORT"; do
+    existing=$(lsof -ti tcp:"$port" 2>/dev/null || true)
+    [ -n "$existing" ] && kill "$existing" 2>/dev/null || true
+done
+for port in "$IPC_PORT" "$WS_PORT"; do
+    n=0
+    while lsof -ti tcp:"$port" >/dev/null 2>&1; do
+        sleep 0.1; n=$(( n + 1 )); [ "$n" -gt 30 ] && break
+    done
+done
+
+mkdir -p "$DATA_DIR"
+
+echo "alias   : $ALIAS"
+echo "network : $NETWORK"
+echo "anchor  : $ANCHOR"
+echo "ws-port : $WS_PORT"
+echo ""
+
+echo "building daemon…"
+go build -o /tmp/waste-daemon-web ./cmd/daemon
+
+/tmp/waste-daemon-web \
+    -alias "$ALIAS" -data-dir "$DATA_DIR" \
+    -ipc-port "$IPC_PORT" -ws-port "$WS_PORT" \
+    -anchor "$ANCHOR" \
+    2>/tmp/waste-daemon-web.log &
+PIDS+=($!)
+
+n=0
+while ! nc -z 127.0.0.1 "$IPC_PORT" 2>/dev/null; do
+    sleep 0.1; n=$(( n + 1 ))
+    [ "$n" -gt 80 ] && echo "daemon failed to start — check /tmp/waste-daemon-web.log" >&2 && exit 1
+done
+
+sleep 0.2
+jq -cn --arg net "$NETWORK" '{"type":"join_network","network_name":$net}' \
+    | nc -q0 127.0.0.1 "$IPC_PORT" >/dev/null 2>&1 || true
+echo "daemon ready — joined $NETWORK"
+echo ""
+
+npm run dev --prefix "$(dirname "$0")/web"