v2.1.0 — add predictalot (foundation time-series forecasting)

New service psyb0t/docker-predictalot v0.1.1 at /predictalot/.
Five univariate quantile forecasters (chronos-2, timesfm-2.5,
moirai-2, toto-1, sundial-base-128m) behind one wire shape, plus
weighted ensemble. CPU + CUDA variants, mutually exclusive.

Direct route only (not in LiteLLM providers). MCP enabled by default
with 7 tools via the /mcp/ aggregator. Bearer-token auth.

Lazy model loading (~1.4GB HF snapshots) with idle-unload after
PREDICTALOT_MODEL_IDLE_TIMEOUT (default 30m).

tests/test_predictalot.sh: 5 tests gated on PREDICTALOT=1 or
PREDICTALOT_CUDA=1.

Co-shipped with v2.2.0 (mailbox) on the same commit — shared edits
to docker-compose, .env.example, Makefile, README, docs.