Repin Parakeet Redux to the current upstream revision

moondream/parakeet-redux was rewritten upstream on 2026-09-23 to a single
commit (2bf128600aac), so the pinned revision fad622f no longer resolves.
model.safetensors still downloads from the old revision, but config.json,
ternary.json, tokenizer.json and README.md return HTTP 404, which makes
`install.sh --install-model` fail.

The weights, config, ternary map and tokenizer at 2bf1286 have the same
size and SHA-256 as the old pins, so the model itself is unchanged. Only
the model card README.md differs (8533 -> 8832 bytes), so its pin is
updated along with the revision.

Fixes #1

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/worker.md

@@ -57,7 +57,7 @@ device="cpu", cpu_threads=threads)` and persistent
 Install an **isolated** Python runtime with the
 moondream 2.4.0, kestrel 0.8.0 and compatible CPU dependencies; provide
 preinstalled local weights from revision
-`fad622f25f303105c20d70e201bcc477c88b620c` and pass its directory
+`2bf128600aac4b16946f7ed8372e56117fe5e23b` and pass its directory
 explicitly. The code verifies exact sizes and SHA-256 of weights/config/tokenizer
 against `assets/backends/redux.json` via the shared, offline
 `python/frameyap/model_files.py` schema/verifier before importing model libraries.