initial: Ethica Agent v0.1.0

Lightweight telemetry agent (stdlib-only, Python 3.8+) that collects
metrics via pre-defined widget types and pushes to POST /api/company/metrics.

Widget types: system_cpu, system_memory, system_disk, http_check,
              port_check, process_check, custom_cmd

Platform: Linux (fully). Windows collectors stubbed (NOT_IMPL markers)
ready for porting without changing call sites. system_disk / http_check /
port_check / custom_cmd already cross-platform.

Delivery: run directly (python3 ethica-agent.py --config ethica-agent.yml),
as a systemd service (ethica-agent.service), or as a Docker container.

ethica-agent.example.yml

@@ -0,0 +1,66 @@
+# Ethica Agent configuration
+# Get your token from the admin panel: Company → API tab → Company token
+
+token: REPLACE_ME
+home: https://ethica.no
+interval: 60        # seconds between collection runs
+
+widgets:
+
+  # ── Server metrics ────────────────────────────────────────────────────────
+  - type: system_cpu
+    name: CPU
+    degrade_threshold: 80   # % → degraded
+    offline_threshold: 95   # % → offline
+
+  - type: system_memory
+    name: Memory
+    degrade_threshold: 85
+    offline_threshold: 97
+
+  - type: system_disk
+    name: Disk /
+    path: /
+    degrade_threshold: 80
+    offline_threshold: 95
+
+  # Multiple disks:
+  # - type: system_disk
+  #   name: Disk /data
+  #   path: /data
+  #   degrade_threshold: 85
+  #   offline_threshold: 95
+
+  # ── HTTP endpoint checks ──────────────────────────────────────────────────
+  - type: http_check
+    name: My Application
+    url: https://myapp.example.com
+    timeout: 10       # seconds
+
+  # ── Port / TCP checks ─────────────────────────────────────────────────────
+  - type: port_check
+    name: Database
+    host: localhost
+    port: 5432
+    timeout: 5
+
+  - type: port_check
+    name: Redis
+    host: localhost
+    port: 6379
+
+  # ── Process checks ────────────────────────────────────────────────────────
+  - type: process_check
+    name: nginx
+    process: nginx
+
+  - type: process_check
+    name: Postgres
+    process: postgres
+
+  # ── Custom check (shell command) ──────────────────────────────────────────
+  # Exit code convention: 0 = online, 1 = degraded, anything else = offline
+  # - type: custom_cmd
+  #   name: My health check
+  #   cmd: /opt/checks/my-check.sh
+  #   timeout: 30