v1.8.1 — Android runtime fixes, on-device model downloads, desktop server mode

v1.8.1 — Android Runtime Fixes, On-Device Model Downloads & Desktop Server Mode

Fixed — "Start Agent does nothing" on Android

Root cause: android_inference (and the whole decision-engine closure) was
never bundled into the Chaquopy source set, so create_backend({"type": "android"}) raised ValueError, was silently caught, and left pyAgent = null — the Start Agent button appeared to do nothing.

• py-modules now includes android_inference + shugocore_agent; all 21
  engine modules are bundled into app/src/main/python/.
• DecisionEngine imports lazily inside a guarded _initialize_engine —
  missing engine dependencies degrade to the stub observation loop instead of
  crashing agent construction.
• Kotlin compile fixes: Service.START_STICKY (previous constant is
  API-34-only), PyObject.toJava(Map::class.java), vararg spread for
  create_agent(soc, api_url), null-safe model-dir scan, inference init moved
  off the main thread.

Added — On-device model downloads (no adb pushes)

• Models… dialog in MainActivity: curated catalog of 5 ungated Hugging
  Face GGUF quantizations (Qwen2.5-0.5B/1.5B/3B-Instruct,
  Llama-3.2-1B-Instruct, SmolLM2-1.7B-Instruct, all Q4_K_M), tagged
  recommended per RAM tier; plus sideloaded .gguf files, select & load /
  delete, and a live %/MB progress bar.
• ModelDownloader: resumable HTTP downloads (Range + .part → atomic
  rename + exact-size verification + cancel + auto-retry) into
  filesDir/models.
• Hot-load: ShugoCoreService.loadOnDeviceModel() starts the llama.cpp
  bridge and the loopback LocalApiServer on 127.0.0.1:11434 without
  restarting the agent — the agent's default backend URL is the same
  endpoint, so on-device inference activates on the next generate call.
• findModelFile() prefers the persisted selected_model.

Added — Sensor engagement test cycle

• AndroidAgent.update_telemetry() / sensor_test_cycle(steps) /
  enriched get_status(); Kotlin pushes battery / charging / CPU temp / RAM /
  accelerometer / thermal telemetry every tick.
• Binder APIs getAgentStatus() / runSensorTestCycle() /
  getDeviceRecommendation(); MainActivity polls agent status at 1 Hz —
  fixes the frozen memory status display.
• tests/test_sensor_engagement.py — 6/6 passing.

Added — Desktop server mode (macOS / Linux / Windows)

• shugocore_server.py (shugocore-server console script) speaks the Ollama
  wire contract (/api/generate, /api/chat, /api/tags, /health) plus
  the engine API (/api/v1/status, /api/v1/task), so the tablet pairs as a
  node with zero client changes. Desktop URL field in MainActivity;
  on-device llama.cpp remains the default when blank.
• tests/test_shugocore_server.py exercises every endpoint with real HTTP.

Fixed — Android build toolchain

• Gradle wrapper pinned back to 8.11.1 (Gradle 9 removed
  Project.exec(Action) that AGP 8.7.3 needs), daemon JDK pinned to 21,
  Kotlin Gradle plugin + kotlinOptions jvmTarget 17 + ndkVersion 27.0.12077973 + Chaquopy buildPython added. compileDebugKotlin,
  configureCMakeDebug, and the full assembleDebug APK all build.

Fixed — Backend resilience

• OllamaBackend default timeout 30 → 120 s (cold model loads made every
  decision fall back).