feat(gallery): add Maple-Preview GGUF variants

Offer four ternary builds through the existing llama.cpp backend.
Use the publisher's CPU settings and embedded chat template.
Pin downloads and verify SHA256 values against two HF metadata sources.
Document installation and explicit variant selection.

Assisted-by: Codex:gpt-6

docs/content/features/model-gallery.md

@@ -54,6 +54,27 @@ Both views use the same model selection and store the view, search, filter, and
 selection in the URL. Installing from Explore does not move you away from the
 catalog; the entry updates in place when the operation finishes.
 
+## Maple-Preview
+
+[Maple-Preview](https://huggingface.co/deepgrove/maple-preview-GGUF) is a 20B reasoning model with about 1B active parameters.
+Install it with automatic selection among four ternary GGUF builds:
+
+```bash
+local-ai models install maple-preview-tq1-0-head-q4-k
+```
+
+The variants combine TQ1_0 or TQ2_0 weights with a Q4_K or F16 output head.
+To select a build explicitly:
+
+```bash
+local-ai models install maple-preview-tq1-0-head-q4-k --variant maple-preview-tq2-0-head-q4-k
+```
+
+These entries use llama.cpp with the publisher's CPU configuration, sampling settings, and embedded Jinja chat template.
+The default context is 8,192 tokens; the model supports up to 131,072 tokens with sufficient memory.
+Use a current llama.cpp backend that includes the Maple architecture.
+Downloads use a pinned revision and SHA256 checksums.
+
 ## NeoHorse-1-4B
 
 Install NeoHorse-1-4B with automatic selection between Q4_K_M, Q6_K, and Q8_0 GGUF builds: