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/build.md

@@ -93,7 +93,7 @@ and target application compatibility require further headset work.
 
 ## Inference runtime
 
-Redux weights at `fad622f25f303105c20d70e201bcc477c88b620c` are CC-BY-4.0. Pinned
+Redux weights at `2bf128600aac4b16946f7ed8372e56117fe5e23b` are CC-BY-4.0. Pinned
 file sizes/hashes and attribution live in `assets/backends/redux.json`; offline
 `--list-models`/`--check-model redux --model-dir /absolute/model` (or
 `scripts/model-status.py`) verify without inference or downloads. Manifest