[diffusion] feat: support native and peft minimax h3 loras (#34359)

docs/docs/sglang-diffusion/api/cli.mdx

@@ -79,6 +79,8 @@ Use `sglang generate --help` and `sglang serve --help` for the full argument lis
 - `--model-variant {NAME}`: semantic checkpoint variant to load when one model repository contains multiple weight partitions. The pipeline maps this stable name to the repository layout before loading; for example, MiniMax-H3 accepts `fl2va` and `ref2va`. This is a server/load-time choice, unlike a request's `task`.
 - `--model-subfolder {PATH}`: advanced direct override for a component subfolder inside the model repository. Prefer `--model-variant` when the pipeline exposes semantic routing. If both are supplied, they must resolve to the same weight partition.
 - `--lora-path {PATH}` and `--lora-nickname {NAME}`: load a LoRA adapter
+- `--lora-weight-name {FILE}`: select one adapter file from a repository that contains multiple LoRA revisions. The Hub download is filtered to that file plus JSON metadata, so unused weights are not downloaded.
+- `--lora-alpha {N}`: supply the training alpha when a single-file adapter omits both per-layer alpha tensors and `adapter_config.json`. Do not set it when the adapter already records alpha metadata.
 - `--lora-merge-mode {auto|merge|dynamic}`: choose how LoRA is applied. `auto` statically merges regular weights and uses dynamic LoRA for FSDP-sharded weights to avoid full-gather peaks.
 - `--num-gpus {N}`: number of GPUs to use
 - `--performance-mode {manual|auto|speed|memory}` / `--mode`: preset for latency/throughput and memory defaults. `auto` is the default and dispatches residency from selected-GPU headroom and workload type: image DiTs stay resident above the 45 GiB threshold, while video DiT placement remains model-specific. It uses FSDP only for validated DiT-offload replacement paths. `speed` keeps `torch.compile` disabled unless a model-specific deployment config opts in after validation; pass `--enable-torch-compile true` to enable it explicitly. Use `manual` to keep performance-related server args under explicit user control. Explicit offload, FSDP, and parallelism flags take precedence in all modes.

docs/docs/sglang-diffusion/compatibility_matrix.mdx

@@ -820,7 +820,7 @@ The entries below simply reflect configurations that have been manually validate
   <tbody>
     <tr>
       <td style={{padding: "9px 12px", fontWeight: 500, backgroundColor: "rgba(255,255,255,0.02)"}}>MiniMax-H3</td>
-      <td style={{padding: "9px 12px", backgroundColor: "rgba(255,255,255,0.05)"}}>`larryvrh/MiniMax-H3-Turbo-Lora`</td>
+      <td style={{padding: "9px 12px", backgroundColor: "rgba(255,255,255,0.05)"}}>`larryvrh/MiniMax-H3-Turbo-Lora`<br />`lightx2v/Minimax-h3-Turbo`<br />`fal/MiniMax-H3-Realism-People-LoRA`</td>
     </tr>
     <tr>
       <td style={{padding: "9px 12px", fontWeight: 500, backgroundColor: "rgba(255,255,255,0.02)"}}>Wan2.2</td>