Deploy artifacts: Termux service scripts plus tunnel config

deploy/termux-{start,stop,status}.sh manage the release binary on the
tablet; deploy/cloudflared-whaleprep.yml is the dedicated tunnel config
for whaleprep.oiupoyt.space. README gains a deploy section.

README.md

@@ -125,6 +125,24 @@ Recommended floor: **1 vCPU / 512 MB RAM / 5 GB disk**. Comfortable headroom:
 **1 vCPU / 1 GB RAM / 10 GB SSD**. No Postgres, no Redis, no object storage —
 one static binary plus one SQLite file.
 
+## Deploy (Termux + Cloudflare Tunnel)
+
+The live site runs on an ARM tablet via Termux behind a dedicated tunnel:
+
+    # on the host
+    pkg install rust sqlite python git
+    git clone https://git.oiupoyt.space/oiupoyt/whaleprep.git
+    cd whaleprep && cargo build --release
+    ./deploy/termux-start.sh
+    python3 scripts/import_examgoal.py whaleprep.db   # 9,813 real PYQs
+
+    # tunnel (once): cloudflared tunnel create whaleprep, point the CNAME at it
+    cloudflared tunnel --config ~/.cloudflared/whaleprep.yml \
+      run ffc0df8c-0978-4b54-93a1-57c64fa1464c
+
+See [deploy/](deploy/) for the service scripts and tunnel config.
+Live at: https://whaleprep.oiupoyt.space
+
 ## Tests
 
     cargo test

deploy/cloudflared-whaleprep.yml

@@ -0,0 +1,14 @@
+# Dedicated tunnel config for whaleprep.oiupoyt.space.
+# On the Termux host this lives at ~/.cloudflared/whaleprep.yml with the
+# credentials-file path adjusted to that machine's home.
+# Create once: cloudflared tunnel create whaleprep
+# DNS once:    cloudflared tunnel --config whaleprep.yml route dns --overwrite-dns <TUNNEL_ID> whaleprep.oiupoyt.space
+# Run:         cloudflared tunnel --config whaleprep.yml run <TUNNEL_ID>
+tunnel: FFC0DF8C-0978-4B54-93A1-57C64FA1464C
+credentials-file: ~/.cloudflared/ffc0df8c-0978-4b54-93a1-57c64fa1464c.json
+protocol: http2
+
+ingress:
+  - hostname: whaleprep.oiupoyt.space
+    service: http://localhost:8222
+  - service: http_status:404

deploy/termux-start.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# Start WhalePrep on Termux (SQLite, port 8222) in background.
+# Usage: ./deploy/termux-start.sh   (run from repo root)
+cd "$(dirname "$0")/.."
+PID_FILE="./whaleprep.pid"
+LOG_FILE="./whaleprep.log"
+DB_FILE="./whaleprep.db"
+PORT=8222
+if [ -f "$PID_FILE" ]; then
+    PID=$(cat "$PID_FILE")
+    if kill -0 "$PID" 2>/dev/null; then
+        echo "WhalePrep is already running (PID: $PID)"
+        exit 0
+    else
+        rm -f "$PID_FILE"
+    fi
+fi
+[ -x ./target/release/whaleprep ] || { echo "missing ./target/release/whaleprep — run: cargo build --release"; exit 1; }
+echo "Starting WhalePrep on :$PORT (db $DB_FILE)..."
+PYQ_DB="$DB_FILE" PYQ_ADDR="127.0.0.1:$PORT" RUST_LOG=info nohup ./target/release/whaleprep </dev/null >> "$LOG_FILE" 2>&1 &
+NEW_PID=$!
+echo $NEW_PID > "$PID_FILE"
+disown $NEW_PID 2>/dev/null || true
+sleep 2
+if kill -0 "$NEW_PID" 2>/dev/null; then
+    echo "WhalePrep started (PID: $NEW_PID) -> http://localhost:$PORT"
+else
+    echo "FAILED — tail $LOG_FILE:"; tail -5 "$LOG_FILE"
+fi

deploy/termux-status.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+# WhalePrep status + health ping. Usage: ./deploy/termux-status.sh
+cd "$(dirname "$0")/.."
+if [ -f ./whaleprep.pid ] && kill -0 "$(cat ./whaleprep.pid)" 2>/dev/null; then
+    PID=$(cat ./whaleprep.pid)
+    echo "RUNNING (PID $PID, RSS $(( $(ps -o rss= -p $PID 2>/dev/null || echo 0) / 1024 )) MB)"
+    curl -s -o /dev/null -w "health=%{http_code}\n" http://127.0.0.1:8222/ 2>&1 || echo "port not responding"
+else
+    echo "NOT running"
+fi

deploy/termux-stop.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+# Stop WhalePrep. Usage: ./deploy/termux-stop.sh   (run from repo root)
+cd "$(dirname "$0")/.."
+[ -f ./whaleprep.pid ] && PID=$(cat ./whaleprep.pid) && kill "$PID" 2>/dev/null && rm -f ./whaleprep.pid && echo "stopped $PID" || echo "not running"