Introduce a new telemetry ingestion service (misc/data/service.go) that implements an HTTP server to accept telemetry payloads, validate and sanitize inputs, apply rate limiting, compute dedupe hashes, and forward records to PocketBase with token-based auth. Add module file (misc/data/go.mod) setting module telemetry-ingest and Go version 1.25.5. Update Dockerfile to use golang:1.25-alpine and remove baked-in environment defaults (so runtime envs are required), keeping the build stage and final CMD. These changes add the core ingestion logic, dependency module, and align the build image/version.
Containerize the telemetry ingest service and reorganize source layout. Added misc/data/Dockerfile with a multi-stage build (golang:1.23-alpine -> alpine:3.23) to produce /app/telemetry-ingest, run as a non-root user, expose :8080, and provide default env vars for configuration (LISTEN_ADDR, MAX_BODY_BYTES, RATE_LIMIT_RPM, RATE_BURST, RATE_KEY_MODE, ENABLE_REQUEST_LOGGING, UPSTREAM_TIMEOUT_MS). Renamed misc/ingest.go to misc/data/service.go to reflect the new directory structure.
