Українською: README.uk.md .

Solarchik is a native Android companion game for Seeker: a small solar robot (Sol) you talk to, a daily roof run that unlocks a signed CLOCK IN on Solana, and an agent desk where five strategy NFTs forecast on live public markets.

Native Kotlin APK, no WebView: artifacts/solarchik-handoff/android (package net.solardepin.solarchik, minSdk 26, targetSdk 35).

Solana Mobile Stack: Mobile Wallet Adapter (mobile-wallet-adapter-clientlib-ktx 2.0.7) for connect, sign-and-send and sign-only fallback; Seed Vault on Seeker.

On Solana: CLOCK IN memo transaction, Metaplex Core NFT mint (5 strategy SKUs, Free/Pro, royalties + attributes), devnet fee payment (transfer + memo with a de-dup ref), on-chain ownership checks.

Safety: agents never send exchange orders; paper mode (virtual 1 SOL) and devnet mode only. Paid mainnet mint is compiled off (MAINNET_PAID_MINT=false).

Privacy: PRIVACY.md ; Settings → Privacy & data → Delete my data.

Build/test notes and APK hashes: NATIVE_PROGRESS.md . docs/CLOCKIN_COMPLIANCE.md is an older checklist (0.20.5) and is not the review build.

Review build is 0.22.3 (versionCode 78), submitted 3 Oct 2026. Devnet only.

APK: https://github.com/Solar-DePIN-Hub/Solarchik/releases/download/v0.22.3/solarchik.apk — release v0.22.3 . Signed with the box test key, not a production key. sha256 6555740371aa24b7e519194db56fef0b2da3e55427a881a3d45b1ccb3ac216ee. Launcher name is plain "Solarchik".

Do not install public/Solarchik-CLOCK-IN-0.19.51.apk. That is an old 0.19.51 build. APKs before commit 22a84a3 called solarchik-super-app.vercel.app, which has no /api/native/* routes, so their Strategy NFT market failed.

Demo: https://www.youtube.com/watch?v=oAxoliLwUXo — roof run, devnet CLOCK IN, voice mid-run, live phone secretary.

Live web app (same server the APK uses): https://solarchik-market.vercel.app — Solana devnet only.

Network: devnet for mints, fee payments and the market. The app refuses mainnet desk orders, and the paid mainnet mint is compiled off (MAINNET_PAID_MINT=false).

What is simulated: agents never send exchange orders. On the phone they run a rule engine on real public feeds (Polymarket, Coinbase, Kraken, Backpack, Open-Meteo) in paper mode (virtual 1 SOL, labelled) or devnet mode. On the server, every real-money path (Polymarket orders, deposit relayer, mainnet arb) is behind LIVE_TRADING_ENABLED, which is off; the web arb desk is labelled SIMULATION. AI: Sol chat goes through the friend worker (friend.solardepin.net, Featherless model, no keys on the phone); the web prediction agent uses Grok when an xAI key is set and otherwise Gemini (the live deploy uses Gemini, and says so).

Daily loop: 1200 m unlocks the day's signature. Seven signed days in a row open a 48 h fee-free window on the agent desk. The fee waived is the devnet/paper fee, not mainnet SOL.

Languages: English and Ukrainian follow the phone language. The app sends lang to the server, so server reasons come back in the same language.

Tests on this release: 348 total, 11 skipped, 0 failed.

Timeline: Started Sep 19, 2026; the Sep 30 bulk commit imports code built in Grok Build in Sep 2026; an older unrelated Solarchik Telegram prototype (Jul 2026) is not part of this submission; also entered MunichTech (Sep 2026). Submitted to CLOCK IN on Oct 3, 2026.

Paid mainnet mint and the arb desk (Titan × Backpack) were built and run before this submission. They are off in 0.22.3 on purpose, not because they were unfinished. A review APK that can spend mainnet SOL or send exchange orders is a real-money build; judges install it on a device they do not control, so those paths are compiled or flagged off: MAINNET_PAID_MINT=false, the app refuses mainnet desk orders, and LIVE_TRADING_ENABLED / ARB_MAINNET_ENABLED stay unset. The «На касу арбу» top-up is hidden and blocked on the server. Turning them back on is a flag and a production key, not a rewrite. SKR was not added here because SKR is mainnet-only. Devnet SOL in this build has no value.

Tab

What it does

Yard

streak, today's shift (run → CLOCK IN → signed proof), fee-free reward windows, week strip, crew

Run

native SurfaceView roof runner; 1200 m opens the day. Voice to Sol works mid-run.

Agents

mint strategy NFTs (devnet), run them on paper or devnet, risk caps, fee ledger, pay owed devnet fees in one MWA tx

Sol

chat with Sol (EN/UK), voice in/out, daily report built only from real numbers

Settings

wallet, network (Seeker can force devnet), notifications, language, privacy & data

cd artifacts/solarchik-handoff/android ./gradlew :app:testDebugUnitTest # Robolectric + JVM tests (no device needed) ./gradlew :app:testDebugUnitTest --tests '*LiveAgentsIT' -PliveAgents=1 # live market data, paper only ./gradlew :app:lintDebug ./gradlew :app:assembleDebug # app/build → /tmp/solarchik-apk-build/outputs/apk

A signed release needs your own keystore (app/solarchik-release.jks + keystore.properties, both gitignored). Without it assembleRelease produces an unsigned APK. The review APK is the release asset above, not a local rebuild.

The Agents tab → Strategy NFT market uses the server routes of the web app (devnet only). Rule: a fresh mint is not locked; every strategy change locks sale for 240 h on chain (FreezeDelegate under the server). Real devnet addresses (server collection 74Tyscw6gL9mDxvNsSSDuj6v4YHqFPCyUULirjLPeuQC ):

Strategy NFT

Asset

State

Calm Hourly BTC

listed, 0.05 SOL

Momentum Rider 5m

listed, 0.12 SOL

Mean Revert Scout

listed, 0.08 SOL

Market Test

listed, bought (95/5), buyer changed the strategy → locked until 2026-10-12 16:50 UTC

Lock Test BTC Windows

strategy changed, transfer refused on chain, server-written APR; locked until 2026-10-12 16:38 UTC

Every signature: docs/devnet-strategy-run.md .

The Ukrainian README ( README.uk.md ) also documents the web app (branch web-fees): run rules, CLOCK IN, fee windows and the arb desk.

Solarchik — native Solana Mobile AI companion: roof runner, daily CLOCK IN, voice friend Sol, and Strategy-NFT agents with risk limits (devnet).

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