ui : Discover & Download Models from HF Hub (#29584)

common : resolve - download tags and list cached sidecars

A Q4_0-mtp style tag now resolves the sidecar file when no model file matches it, so a solo draft or mmproj download actually pulls the file. Cached sidecar files list as their own entries so the state survives a restart, and removing such a tag deletes only the sidecar.

Assisted-by: pi:zai-org/GLM-5.3

ui : optional sanitized raw HTML in markdown

Add an allowHtml prop to MarkdownContent: raw HTML found in the markdown is
rendered after DOMPurify sanitization instead of being escaped as literal
text. Default stays escaped.

Assisted-by: pi:GLM-5.3-Flash

ui : add the discover models components

The Discover surface: the curated-catalog list with its search and
skeletons, the details pane with its readme, metadata, Hub stats and
download options, and the standalone download progress bar that replaces
the plain one. The quant download button sizes its select with a new xs
trigger, so the select gains that size and the muted box look. The store
stays incomplete when a repo fails, so the next mount retries it.

Assisted-by: pi:llama.cpp/DeepSeek-V4.1-Flash

ui : put the discover view in the models manager

The manager dialog gains its second view: the Discover Models call to
action fades the table out, slides the title with its compass mark, and
fades the discover surface in; the arrow button returns to the table.

Assisted-by: pi:llama.cpp/DeepSeek-V4.1-Flash

Conflicts:

tools/ui/src/lib/components/ui/button/button.svelte

ui : add the Enable Discover Models setting

The flag gates browsing and downloading HuggingFace GGUF models, so it is
declared on the discover layer; the repo-tree lookup in the manager layer
above reads it from here.

Assisted-by: pi:llama.cpp/DeepSeek-V4.1-Flash

ui : resume model downloads from the pause point

A stopped download keeps its partial file instead of deleting it, so
re-posting the tag resumes from disk. The first progress record now
carries the resume offset, the paused snapshot survives into the
resumed entry, and a pause settles as soon as it is requested.

Assisted-by: pi

ui : lead the discover list with downloads

The discover sidebar lists running downloads above the suggested models,
and steps aside while a query is active. A paused download stays in the
manager table, where it is resumed or dropped.

Assisted-by: pi

ui : make resuming a paused download work

Re-posting the tag of a paused download hit the router's "already
exists" check, because a paused download parks its entry as DOWNLOADED
until the next reload: a download entry that is not running is now
replaced and resumed. The UI keeps the paused row when the request still
fails, instead of dropping it and looking finished.

Assisted-by: pi

ui : remember unfinished model downloads

A partial file is named after its content hash, so nothing on disk says
which model it belongs to once the router restarts. The router now keeps
the tags of the downloads it started, clears a tag when the download
finishes or is deleted, and lists what is left as still downloading
without starting anything. The UI adopts those tags as paused on every
list fetch, so a refresh or a fresh open shows an incomplete download and
can resume it from the files already on disk.

Assisted-by: pi

ui : show a paused download's state on its chip

A paused quant chip reads as paused at rest, the way a running one shows
its spinner, and offers the resume action on hover. The selector's
download row gets a View in Discover action beside its cancel.

Assisted-by: pi

ui : collapse the download options by default

The copyable download command starts collapsed so the option rows
lead; expanding it stays one click away.

Assisted-by: pi

ui : keep decision models out of the hub lists

Decision models answer with calibrated probabilities instead of text,
so llama-ui cannot run them: the hub data layer drops them from the
catalog and every search, keyed by the decision-model tag or a
text-classification pipeline.

Assisted-by: pi

ui : read download tags as quant and sidecar

A <repo>:<quant>-<sidecar> tag now parses into its quant and sidecar
instead of one opaque quant token, and ModelsService.draftSidecarsByRepo
collects the router listing's sidecar-only entries per repo, replacing
the inline copy in the models store.

Assisted-by: pi

ui : cluster draft downloads under their main model

Tracked downloads group by repo: the main weights lead and the draft
sidecars ride inside their item as compact sub-lines, on the selector,
the discover list and the manager table. The main model's controls
pause, resume and cancel the whole cluster, and the manager's download
rows select into the configuration pane.

Assisted-by: pi

ui : act on tracked downloads from the table rows

The table passes its clusters' draft sub-lines to the model rows. A
row's actions cascade pause and resume, an in-flight row offers Cancel
download while a paused one keeps Delete from disk, and the confirm
dialog's copy follows the state.

Assisted-by: pi

ui : give downloads a configuration pane of their own

Selecting a tracked download opens the pane in a download mode: live
progress with pause, resume and cancel, and See in Discover, instead of
metadata and load actions that a model without files cannot offer.

Assisted-by: pi

ui : make the discover details self-fetching and responsive

ModelsDiscoverDetailsContainer owns the details, tree and readme
fetches so hosts outside the discover view can render the pane, and the
details layout adapts to narrow panes with container queries instead of
viewport breakpoints.

Assisted-by: pi

ui : download a matching draft with the main model

A main quant download now pulls the quant-matched draft of the most
preferred kind the repo ships (DFlash before MTP), fire-and-forget, so
speculative decoding is ready when the main lands. Manual draft chips
stay available; the options row also collapses to one column in narrow
panes.

Assisted-by: pi

ui : keep discover off by default and couple it with the hub setting

Discover Models starts unchecked. Enabling it turns the Hugging Face
Hub setting on and disabling it turns it back off, so the checkbox
never lies; with discover off the hub setting stays available on its
own for the display data. Stored and reset state are corrected the same
way on load.

Assisted-by: pi

ui : open the manage models dialog on the manager view

The dialog now opens on the manager instead of returning to the last
view, discover entries still land on the discover view while the
setting allows it, and the discover surfaces follow the setting's
state.

Assisted-by: pi

ui : give the discover search room for its focus ring

The sticky search bar insets from the panel edges so the focus ring
stays inside the scroll container, and rows scroll behind an opaque bar
instead of through it.

Assisted-by: pi

common: settle sidecar names on the listing and drop unfinished partials

An infix or trailing sidecar token is ambiguous: draft heads use it
(Model-MTP-BF16.gguf), so do full models with embedded heads
(Model-Q8D-MTP.gguf). Such a name is a sidecar only next to token-free
main weights of the same family, while mmproj or imatrix anywhere in the
name, or a leading token, decides alone (mmproj_f16.gguf).

A quant tag always carries its bit count, so a sidecar named after no
quant (mtp-Model-it.gguf) gets the bare tag: the listing, the plan and
remove all use it. An imatrix tag resolves into a plan slot of its own,
downloaded but never wired into the params.

remove resolves the tag the way a download does and deletes the partial
files of every planned blob, so cancelling a running download or
dropping one left unfinished by an earlier run leaves nothing on disk.
The router passes its token and releases its lock around the call, and
records the unfinished downloads with an atomic write.

llama download succeeds on a sidecar-only plan and prints its paths.

ui : move dialog views and draft states into enums and constants

The models dialog's views become the ModelsDialogView enum, the draft
subline's states join ModelRowDownloadState, the view fade and the
copy-feedback reset move to ui constants, and the dialog's compass
marks come from DISCOVER_ICON.

Assisted-by: pi

ui : drop the unused discover surface

The dead openDiscoverModels twin, the commented-out command divider,
the details pane's unused onClose and its header's close button, and a
redundant type cast leave; the command's copy feedback joins the shared
reset constant.

Assisted-by: pi

ui : trim the download option comments and highlight the chat template

The comment verbosity the options panel and its chips carried shrinks
to the non-obvious why, and the chat template dialog renders through
SyntaxHighlightedCode as jinja instead of a plain pre block.

Assisted-by: pi

common: only a .gguf file is a sidecar, and mmproj/imatrix as whole words

A non-GGUF file named like a sidecar (quantization-mmproj-Q8_0.json) is
picked as the mmproj, and a sidecar word inside a longer word of a model
name (Phi-2-OmniMatrix.i1-Q4_K_M.gguf) drops the model.

ui: dedupe draft sidecar badges per quant

The draft sidecar badges deduped by kind and repo without the quant, so
with a draft cached at two quants only one badge survived, and a delete
of the other main quant found no badge to remove its sidecar with.
Also restores the getDownloadEntries doc lost when the clusters method
landed above it.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: adopt the incomplete download status and drop the paused-ids registry

The store inferred an unfinished download from a downloading entry it
held no local state for, which misread a download running in another
tab as paused and offered a resume the server rejects. The listing
carries the "incomplete" status now, so the adoption keys off it
directly.

The paused ids no longer need to survive in localStorage: the server
remembers them across restarts, and the progress snapshot was stale
after a reload anyway. The stale localStorage key is removed.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: quant-match the pause and cancel cascades

Pause, resume and cancel cascaded to every draft sidecar of the repo
while delete only took the quant-matched ones, so canceling a Q4_0
download also killed a Q8_0 draft that belongs to another quant's
main. Every cascade acts on the quant-matched drafts now, matching
what a delete takes with it.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: collapse the duplicated draft subline markup

The downloaded and in-flight branches repeated the identical connector,
label and badge markup; one block with a conditional tail keeps the two
states in sync.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: scrub positioned styles out of sanitized model card html

The style attribute stays allowed for the KaTeX output, which let a
third party card draw a fixed overlay over the app. The sanitize hook
drops position:fixed and position:absolute values and leaves the KaTeX
layout styles alone.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: run the discover mount fetch once and reuse the shared repoOf helper

fetch() toggles its loading flag synchronously inside the mount effect,
which re-ran the fetch on every toggle and retried failed catalog repos
endlessly; the effect now untracks the call. The local repoOf copy and
the duplicate services import give way to the shared helpers.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: narrow the spec-type map to the draft sidecars

SPEC_TYPE carried empty entries for the aux sidecars it is never
indexed with; the map and the command component now type the badge as
a draft sidecar through a draftBadgeOf helper instead of a cast.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: name the decision-model tags and markdown cache keys

The decision-model hub tag and pipeline tag move into the huggingface
constants next to the other pipeline tags, and the markdown transform
cache prefixes get names instead of bare one-letter tokens.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: read the discover setting through one truthiness check

Three places read the setting with !== false and one with Boolean();
all four read it the same way now.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

ui: compare the models dialog view against its enum

The template compared the view state against the 'manage' literal in
three spots while the script used the enum.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

nit: Remove + before draft sidecar badge
server: list unfinished downloads as incomplete

A download that never finished was reported as "downloading", the same
status a live download carries, so a client could not tell a running
download from a dead one. The tags remembered in unfinished-downloads
now list under a dedicated "incomplete" status, without an instance.

Assisted-by: pi (zai-org/GLM-5.3-Flash)

server: download a model with its sidecars as -hf does

Resolution goes back to master. POST /models takes the sidecar kinds to
pull with the model (mmproj by default) and the download child gets them
as -hf flags, so the server picks the files. /models lists real models
only, each with the sidecars it has on disk, and incomplete downloads
keep their sidecars across restarts. A stopped download keeps its
partial files for the next attempt, and DELETE purges them through the
same plan the download follows.

ui: download sidecars as parameters of their model

The download options keep their chips, but a chip no longer posts a
sidecar tag: the store maps it to its model and the sidecar kinds to
pull, the quant chip takes its companion draft in the same download,
and draft badges come from the sidecars each cached model lists.

The server adds the sidecars a cached model lacks when it is posted
again, and DELETE removes a single sidecar of a cached model.

ui : mirror the server's sidecar lookup in draft badges

The server resolves a sidecar by the case-sensitive <kind>- token in the same
directory as the weights. The UI matched the token loosely, so a badge could
offer a draft the server never pulls.