feat: initial KosmoConnect platform v0.1

Includes:
- Backend services: ingestion (:8001), weather API (:8002),
  gateway (:8003), billing (:8004) with BTCPay integration
- Shared asyncpg pool, TimescaleDB hypertable, Redis, Mosquitto MQTT
- React frontend: Dashboard (MapLibre) and Messaging (chat UI)
- Bridge daemon for Pi + Meshtastic (Serial/TCP T-Deck support)
- Production Docker Compose, Nginx reverse proxy, ops scripts
- DEPLOY.md with step-by-step deployment guide

backend/migrations/001_initial_schema.sql

@@ -0,0 +1,102 @@
+-- KosmoConnect Initial Schema
+-- Runs automatically when the TimescaleDB container starts for the first time
+
+-- Enable TimescaleDB extension
+CREATE EXTENSION IF NOT EXISTS timescaledb;
+
+-- ============================================================
+-- Nodes Registry
+-- ============================================================
+CREATE TABLE IF NOT EXISTS nodes (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    mesh_node_id TEXT UNIQUE NOT NULL,
+    name TEXT,
+    lat DOUBLE PRECISION,
+    lon DOUBLE PRECISION,
+    hardware_revision TEXT DEFAULT 'v1.0',
+    installed_at TIMESTAMPTZ DEFAULT NOW(),
+    last_seen TIMESTAMPTZ,
+    is_active BOOLEAN DEFAULT true,
+    metadata JSONB DEFAULT '{}'
+);
+
+CREATE INDEX IF NOT EXISTS idx_nodes_mesh_node_id ON nodes(mesh_node_id);
+CREATE INDEX IF NOT EXISTS idx_nodes_last_seen ON nodes(last_seen);
+
+-- ============================================================
+-- Environmental Readings (Time-series)
+-- ============================================================
+CREATE TABLE IF NOT EXISTS enviro_readings (
+    time TIMESTAMPTZ NOT NULL,
+    node_id TEXT NOT NULL REFERENCES nodes(mesh_node_id) ON DELETE CASCADE,
+    temperature_c DOUBLE PRECISION,
+    humidity_percent DOUBLE PRECISION,
+    pressure_pa DOUBLE PRECISION,
+    wind_speed_ms DOUBLE PRECISION,
+    wind_direction SMALLINT,
+    pm25_ugm3 DOUBLE PRECISION,
+    pm10_ugm3 DOUBLE PRECISION,
+    gas_resistance_kohm DOUBLE PRECISION,
+    battery_voltage DOUBLE PRECISION,
+    solar_voltage DOUBLE PRECISION
+);
+
+-- Convert to hypertable for automatic time-based partitioning
+SELECT create_hypertable('enviro_readings', 'time', if_not_exists => TRUE);
+
+CREATE INDEX IF NOT EXISTS idx_enviro_node_id_time ON enviro_readings(node_id, time DESC);
+
+-- ============================================================
+-- Mesh Messages (for gateway delivery tracking)
+-- ============================================================
+CREATE TABLE IF NOT EXISTS mesh_messages (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID REFERENCES users(id) ON DELETE SET NULL,
+    direction TEXT NOT NULL CHECK (direction IN ('inbound', 'outbound')),
+    sender_node_id TEXT,
+    target_node_id TEXT,
+    gateway_node_id TEXT,
+    text TEXT,
+    status TEXT DEFAULT 'pending' CHECK (status IN ('pending', 'queued', 'transmitted', 'delivered', 'failed')),
+    hop_count INTEGER,
+    rssi INTEGER,
+    snr DOUBLE PRECISION,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_mesh_messages_status ON mesh_messages(status);
+CREATE INDEX IF NOT EXISTS idx_mesh_messages_target ON mesh_messages(target_node_id, created_at DESC);
+
+-- ============================================================
+-- Users & Subscriptions (minimal schema for Phase 1/2)
+-- ============================================================
+CREATE TABLE IF NOT EXISTS users (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    email TEXT UNIQUE NOT NULL,
+    stripe_customer_id TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS subscriptions (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    plan_type TEXT NOT NULL CHECK (plan_type IN ('free', 'wanderer', 'guardian', 'sanctuary')),
+    stripe_subscription_id TEXT,
+    message_quota INTEGER,
+    messages_used INTEGER DEFAULT 0,
+    valid_from TIMESTAMPTZ DEFAULT NOW(),
+    valid_until TIMESTAMPTZ,
+    is_active BOOLEAN DEFAULT true
+);
+
+CREATE INDEX IF NOT EXISTS idx_subscriptions_user ON subscriptions(user_id);
+
+CREATE TABLE IF NOT EXISTS allowed_nodes (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    mesh_node_id TEXT NOT NULL,
+    nickname TEXT,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    UNIQUE(user_id, mesh_node_id)
+);