4b892054a40799a495b55b3345329f55d382374a
15 Commits
| Author | SHA1 | Message | Date | |
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 Jaroslav Beneš
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4b892054a4 |
Ask several questions on one card
One `ask_user` call can now carry several questions, and they come back in a single submit. Asking one at a time cost a round trip and an interruption each, and by the third you had forgotten the first. Each question becomes an item with its own key; several items share a call index, because they belong to one call and one tool turn has to answer them all. Each answer is quoted beside the question it belongs to -- with four on a card, a bare list would leave the model matching them up by position and sometimes getting it wrong. Options are radios rather than submit buttons, so picking one does not send the form while two other questions are still blank. What you type beats what you picked: someone who writes in the box after clicking an option meant the writing. `_questions_in` also reads the shapes a small model actually sends -- a bare `question` string, a list of plain strings, one object where a list belonged. Getting that wrong costs a whole round trip and shows a card saying nothing. Two test fixes, both mine. `test_posting_a_message_stores_both_turns` raced the background generation it started: against a connection that refuses instantly the reply sometimes won, writing the error and marking the row complete before the assertions could read it. And the generation registry is module-global, so a test that started a reply left an entry -- and a Task belonging to a closed event loop -- for the rest of the session. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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1c659a5640 |
A reply can stop and ask you something
Three features turn out to be one mechanism: a command waiting to be approved, a question the model wants answered, and "this reply is waiting for you" are all — stop the generation, put an interactive block in the bubble, wait for a POST, carry on. So there is one primitive, and the only thing using it so far is `ask_user`: a model can offer you a few answers and a box to write your own. The shell executor is not here yet. This lands first on purpose, because it is the riskiest machinery in the feature and it is worth having working before any subprocess exists to complicate it. Two things about where the pause sits. It pauses a round, not a call: a round's calls run together under a semaphore, and parking four coroutines on four separate answers inside that gather would queue them behind each other invisibly. And Stop had to be taught about it — `cancel` is read between streamed chunks and there are no chunks while paused, so the button did nothing at all until `request_stop` learned to resolve the pause itself. Also here: a risk class on every tool (read, write, execute), which is what the four permission modes will be a table over, and the systemd unit loses ProtectKernelTunables. That last one is not tidying — it bind-mounts /proc/sys read-only, which stops bubblewrap mounting /proc at all, and the obvious workaround would expose this process's environment and with it the encryption key. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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d4cefb066a |
Custom HTTP tools an administrator defines
A row in custom_tools becomes a ToolDef like any built-in, offered beside the thirteen. The registry had to stop being an import-time constant for that: `resolve_tools` now returns the schemas *and* the runners together, carried to the loop on the ToolContext. That closes a hole on the way. `run_tool` looked names up in the global REGISTRY with no reference to what had been offered, so a model naming a tool its chat was gated out of -- a family switched off, a permission the reader lacks -- had it run anyway. The resolved set is now authoritative. Arguments come from a model, so an argument may fill a hole but never move the target: the scheme and host of a URL template are literal, values are escaped for where they land, and the origin is pinned afterwards. Every redirect hop is checked the way services/fetch.py checks one, and the secret is dropped if a hop leaves the origin it was issued for. Also fixes the tool-activity block claiming every library tool had "searched the web", which it has done since the second family landed. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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3b1632069c |
Compaction: a button, and automatically when the window fills
A long conversation eventually just stops working. Compaction summarises the earlier turns and sends the summary in their place. The messages are kept. They stay in the transcript behind a collapsed divider and simply stop being part of the request, which is what makes the button safe to press and automatic compaction safe to have at all: a summary that came out badly is a bad turn, not a lost conversation. Stored on the Chat, not as a synthetic Message. A synthetic row needs a role -- `system` breaks the one-system-message rule the moment build_messages emits it beside the harness, and user/assistant makes it a turn people can edit, regenerate from and copy, indistinguishable from a real one in all four places a bubble is rendered. Worse, "editing rewinds, it does not branch" would silently delete it and leave no marker that compaction had happened at all. The summary goes out as a user turn and an assistant turn, not one. A leading assistant breaks templates requiring the first non-system message to be user; a lone leading user produces user, user whenever the kept history starts on a user turn -- which it always does, because the cutoff lands on a finished reply. compacted_through_id is a plain id rather than a foreign key: migrations.py compiles only the column type, so a REFERENCES clause would exist on a fresh database and not on an upgraded one, and a constraint half the fleet has is worse than none. cutoff_message validates it on every read instead, and a rewind past the boundary clears it. Compacting again summarises only the delta, with the previous summary supplied to be subsumed. Re-summarising the whole chat each time grows quadratically and eventually exceeds the window it is protecting. Automatically at the top of _run, not in post_message: that route's contract is to return immediately and leave the slow part to a resumable connection, and it also means build_request is called once, after compaction, with no second assembly path. The trigger is the last reply's recorded usage plus an estimate of the new turn -- retrospective because true prompt_tokens are only knowable after a response, plus the delta because otherwise fifty thousand characters pasted into the composer overflow a window that read 90% last turn. It never fires when the context length is unknown. It does fire on estimated counts, which is safe here precisely because nothing is lost. _maybe_compact never raises: a failure logs and sends the uncompacted request. A `status` event says "Summarising earlier messages…" in the meantime, because a silent multi-second pause before the first token is what a hang looks like. The wording is three fragments under Admin - Prompts. Clearing task.compact turns compaction off entirely. Also adds compaction.moment(): SQLite does not store the offset, so a row loaded from disk is naive while one in the session's identity map keeps its tzinfo, and comparing the two raises. Every comparison here is between exactly those. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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09cfde4de8 |
Prompt suggestions on the new-chat screen
A blank composer is the least helpful thing a chat client can show someone who has just installed one. Three cards now sit under the empty state, and an administrator manages them at /admin/suggestions. Clicking a card fills the composer and stops there. It deliberately does not send: every default ends mid-sentence, because a card is a starting point rather than a question somebody already asked, and the caret lands where the person has to start typing. Seeding is guarded by a settings flag, not by "is the table empty" -- otherwise an administrator who decided against them would get all three back on every restart. Capped at twelve, six shown: past a dozen this is a menu, and a menu on the empty screen is a worse blank page than a blank page. The cards are gated on there being no chat at all, not on the thread being empty. An empty chat someone opened on purpose already has a model and a prompt chosen. Also fixes a pre-existing bug the position test caught. Both this and _refresh_models wrote `coalesce(max(position), -1) or -1`, and position 0 is falsy -- so the second row landed back on 0 on top of the first. The coalesce was already doing that job; the `or` was undoing it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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b8618b0c91 |
Show what a reply cost, live and afterwards
Tokens, how full the context is, and tokens per second -- as chips under each assistant bubble, updating while the reply streams and still there when it finishes. The numbers come from one Metrics object built either from the generation still being written or from the row it left behind. That is the point rather than tidiness: the finished bubble is re-rendered from the database the instant the stream ends, so two code paths would make the figures visibly jump at exactly the moment someone is watching them. Here the only thing that changes is that an estimate may become exact. Message.usage_json has existed and been dead since the schema was written. It is the store. Two counts that look like one. prompt and completion are summed across tool rounds -- what the reply cost. context_tokens is overwritten each round with that round's prompt plus completion -- what the window actually holds. A three-round reply pays for its prompt three times and only ever occupies the window once, so a single number would be wrong for one of the two questions. Generation gains started_at as a field rather than a local in _run, because _follow is a different function that sees only the Generation and otherwise has nothing to compute a live speed against. It also carries a prompt estimate taken before the first chunk, since real usage arrives in one chunk at the very end and a percentage that appears only after the reply is useless. Everything is marked with a tilde when the endpoint reported nothing, and the percentage is simply absent when no context length is set: unknown has to stay tellable from small, and a percentage of an unknown total is a made-up number in a place people trust numbers. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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71dc46455c |
Green instead of gold, and a leaf that reads at 16px
The brand accent was rune gold. It is now mallorn green: --gold becomes
--leaf in tokens.css and everywhere it resolved, and the mark's wafer is
the green of the leaves lembas travels wrapped in rather than the biscuit
inside. Yellow is left to mean exactly one thing in the interface -- a
warning -- instead of two.
Two knock-on choices the rename forced:
- Code keywords move from the brand accent to --warning. Strings are
--success, which is green; keywords in leaf green beside them is not
a colour scheme.
- --success itself leans teal now. Two greens a hue apart read as one
colour rendered badly, and an unread dot has to be tellable from a
brand badge at a glance.
The mark is redrawn, not just recoloured. The blade is ovate -- widest a
third up from the base, rounded where the stem meets it, drawn out only
at the tip -- because the old one was pointed at both ends and read as an
eye. It is also much larger relative to the tile: at 16px the silhouette
is all that survives, and a small leaf on a large tile is a green square
with a smudge on it. Veins sweep towards the tip and shorten as the blade
narrows. The score cross is thinner and fainter so it stays texture.
A single diagonal score was tried first and rejected: behind a diagonal
leaf it does not read as scoring, it reads as a line struck through the
mark.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Jaroslav Beneš
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436226370a |
PWA, one send/stop button, audio in and out, web search as a tool
Four pieces of work.
**Installable.** A manifest carrying the instance name, PWA icons rasterised
from the existing mark at design time, a service worker and a themed offline
page. The worker caches the shell only and bails out on /api/, /auth/, /admin/
and anything accepting text/event-stream -- passing a reply stream through a
worker turns it into one delivery at the end, or nothing. It is served from
GET /sw.js rather than the static mount because a worker's scope is the path it
came from.
**Send and Stop are one button.** They were two, and the hidden one was never
hidden: `.btn` is display: inline-flex, which outranks the browser's own
`[hidden] { display: none }`, so Stop sat permanently beside Send. app.css now
forces the attribute to win -- every control toggled with `hidden` depended on
that -- and the composer renders one button carrying both icons, with ui.js
flipping data-composer-action and the type with it.
**Audio.** Speech to text and text to speech against any OpenAI-shaped
/v1/audio/* endpoint: dictate into the composer, have a reply read out.
Instance settings in Admin, per-reader overrides in Settings, with the voice
list discovered from the server where it offers one. Recorded audio is capped
and never written to disk -- it is not an attachment, it has no owner, and
nothing would ever sweep it.
**Web search, as a tool.** This is the tool loop PLAN.md described as the real
work: one reply is now a bounded sequence of requests rather than one. The model
asks, the tool runs, the result goes back and it is asked again, up to three
rounds. Providers are DuckDuckGo (no setup), SearXNG and Firecrawl.
Two decisions worth stating. Tools are only offered to models flagged `tools`,
because an endpoint without support rejects the whole request rather than
ignoring the array -- the same reason images only reach models flagged
`vision`. And tool results are not replayed as context on the next turn, for the
same reasons reasoning is not: the answer already contains what the model made
of them, and replaying stale results into every later request wastes the window
and reliably sends a small model into a search loop. The sources stay visible in
the transcript instead.
Search results are untrusted third-party text and are treated as such: escaped,
and only http/https URLs rendered as links.
338 tests, ruff clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Jaroslav Beneš
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ca3e4fd04f |
Background generation, unread replies, send/stop, PLAN.md
**Replies now run in the background.** Generation was driven by the SSE request, so navigating away or opening another chat cut the answer off mid-sentence. services/generation.py owns the work as its own task and the SSE endpoint merely follows it. Verified: attached briefly, closed the connection, went to another page -- the reply finished anyway, 832 characters, not marked stopped, auto-titled. Reattaching works because both `render` and `reasoning` frames now carry the whole block rather than a delta. A follower arriving late has no earlier fragments to append to, so deltas would leave it permanently missing the beginning. Verified: attached six seconds in and the first frame already contained 517 characters written while nobody watched. **Unread indicator.** A reply that lands with no follower attached marks its chat unread; the sidebar polls every 10s for out-of-band dot spans plus an HX-Trigger that raises a toast. Polled rather than pushed: a browser sitting on another chat has no connection to the one that finished, and an always-on channel per tab is a lot of machinery for a green dot. `unread_notified` stops the same arrival being announced every tick. Follower count is what decides "was anyone watching", so reading it as it arrives does not mark it unread -- verified both ways. **Stop is the send button.** While a reply is being written the send button becomes a red stop square, found via a MutationObserver on the thread since the composer and the streaming bubble are far apart in the document. The in-bubble Stop is gone. **Attachment border removed.** As asked -- an attachment is a picture, and the frame only ever drew at the wrong width. The anchor now shrink-wraps and the img's width/height attributes are overridden so a small image shows at its own size. Adds PLAN.md: what is built, what is not, known limits, and the decisions that look like oversights until you know the reason. 239 tests, ruff clean. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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5f020ef33f |
Live Markdown, stop, rewind, custom picker, dialogs
Seven things. **Reasoning starts closed.** The answer is what the reader is waiting for; the thinking is one click away. **Image borders.** .attachments__image was a block-level <a>, so its border stretched the full column around a narrow picture. inline-block, and the frame is the picture. Same fix for the composer thumbnail. **Markdown now renders during the stream.** The generator re-renders the answer so far and sends it as a `render` event at most every 100ms, swapped with innerHTML, instead of appending escaped tokens and formatting everything at the end. Re-rendering whole rather than appending is the point: a list or a code fence is only correct once its context exists, and partial syntax resolves itself as more arrives. Measured against a live model: 29 render events, formatting visible from the first content token. **Stop button.** A stop request goes into an in-process set the generator checks between chunks; whatever arrived is kept, because a half-written answer the reader chose to cut short is still worth having. Measured: stream ended 0.2s after the request, 1155 characters preserved, message marked stopped rather than errored. Navigating away does the same thing via CancelledError. **Rewind and edit.** Edit one of your own turns and everything after it is deleted, then the conversation runs on from there. Deliberately not branching: that needs a UI for choosing between versions, and "go back and try again from here" is what was asked for. The form states how many messages will be discarded before you confirm. **Custom model picker.** A <select> renders only text in an <option>, so it can never show an avatar. Built from buttons and a hidden input, with descriptions, capability tags, a filter box past eight models, and arrow-key navigation written out by hand since there is no native widget doing it. **Notification system.** lembas.notify/confirm/prompt in ui.js, built on <dialog> so focus trapping, Escape and page inertness come from the browser. htmx:confirm is intercepted, so every existing hx-confirm gets the themed dialog with no change at the call site; the browser's grey confirm() is gone from every template. 230 tests, ruff clean. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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476812f119 |
Fix attachments never being sent with the message
Uploading an image showed the chip and then did nothing: the file was stored but never reached the model. Two causes, both in the composer template. The chips live in #attachments, and each carries the hidden file_ids input that binds it to the message. That container sat OUTSIDE the <form>, with an `hx-include="#attachments"` on a hidden <div> inside the form meant to pull it back in. That attribute only has an effect on the element issuing the request -- on a child of it, it does nothing. So the form serialised content and nothing else, and post_message saw no file_ids at all. Fixed by putting #attachments inside the form, where the inputs are submitted because they are in the form, rather than because of an attribute that has to be wired correctly. The file input stays outside, since inside it would submit an empty file part on every message. Second: /chat preselected models[0] rather than the model a new chat would actually use. With a vision model set as the default and a non-vision one first in the admin ordering, the composer showed the wrong model, sent the wrong model, and told the user images *would* be sent when they would not. It now resolves through default_model(), the same path /start uses. Every server-side test passed throughout, because the bug was entirely in the wiring between template and browser. Added tests that serialise the rendered form the way a browser does -- every named input inside <form> -- and assert file_ids is among them and the image reaches the model as a content part. Verified they fail with the old markup restored, then pass again. Confirmed end to end against gemma4-e4b-q8: given a drawing, it replied "Left: Green Circle / Right: Orange Triangle". 220 tests, ruff clean. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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29db54960e |
Fix bulk actions, create chats lazily, rework the UI
Seven reported problems.
**Bulk model actions 404'd.** /admin/models/{model_id} was registered
before /admin/models/bulk, and FastAPI matches in registration order, so
"bulk" was parsed as a model id. Moved above the parameterised route,
with a comment saying why, and a regression test.
**Empty chats piled up.** There is now no endpoint that creates one.
"New chat" is a link to /chat, which renders a composer with no row
behind it, and POST /api/chats/start writes the chat together with its
first message. Opening one and walking away leaves nothing.
**Pinning meant two different things.** The picker is now always in the
administrator's position order; pinned models get shortcuts in the chat
sidebar and nothing else. A picker whose order silently differs from the
admin screen is just confusing.
**Model images were missing in chat.** Assistant bubbles now show the
avatar of the model that actually wrote the turn -- which is not always
the model the chat is set to now -- falling back to the LLeMbas mark.
The picker shows it too.
**No global or per-model system prompt.** Three layers now: instance
(Admin -> General), model (Admin -> Models), chat. Precedence, not
concatenation: most specific wins outright. Stacking them reads well in
a settings screen and badly in practice, because two layers that
disagree give the model contradictory instructions and nobody can tell
which is losing. The chat panel shows the inherited prompt as
placeholder text so "leave empty to inherit" is not a guess.
**Alignment and button sizing.** Added --control-h and friends to
tokens.css; every button, input and select takes its height from them,
so a mixed row is flush by construction rather than by per-instance
nudging. Icon buttons are square at that height. Added .btn-row,
.card__header/.card__footer and .grid so pages stop carrying inline
styles, and moved every admin page onto them.
**Settings needed structure.** The user settings page is now tabbed
(Account / Models / Appearance / Security) using radio inputs and
sibling selectors -- no JavaScript, and the browser keeps the chosen tab
across a re-render.
Caught while checking: the chat.css surgery had deleted the attachment,
chip and dropzone rules. Restored, and there is now a check that every
literal class used in a template has a CSS rule.
197 tests, ruff clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Jaroslav Beneš
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d90195015c |
File attachments: images for vision, PDFs and text into the prompt
Drag, paste or pick a file in the composer. Images go to vision models as multimodal content parts; PDFs and text files have their content extracted and placed in the prompt. Verified end to end against gemma4-e4b-q8 on llama-swap: given a drawing and a text file, it named the red square and blue circle and read the number out of the document. Type is decided by inspecting the bytes, never the filename or the browser's Content-Type -- a .png full of text is stored as text. Images are downscaled to 1400px and re-encoded: a phone photo is several megabytes of base64, which is slow and a large slice of the context window. PDF text is extracted once, at upload, and stored; re-extracting per request would let a reply change because a parser was upgraded. Design points worth keeping: - Images are only sent to models an administrator has marked `vision`. This is not graceful degradation -- most endpoints reject the entire request rather than ignoring an image part. A plain text turn stays a plain string for the same reason: the list form 400s on endpoints that do not implement it. - Images reach the model as base64 data URIs, not links. A local endpoint has no route back to LLeMbas, and a hosted one has no credentials for it. - Non-images are served Content-Disposition: attachment with nosniff, so an uploaded .html can never execute in this origin. Stored names are random; the uploader's name is a label and never a path. - Uploads are unbound until the message is sent, which is what lets a file be removed beforehand. claim() only takes unclaimed rows owned by the sender, so a forged id cannot pull in someone else's file. Abandoned uploads are swept at startup. - A scanned PDF says so rather than silently contributing nothing, and truncation is declared to the model in the document tag so it can admit it did not see page 400. - "Here, look at this" with no words is a legitimate turn, so a message is only empty when it carries neither text nor files. Also fixes auto-titling, which read message["content"] as a string and would have broken on the first multimodal turn. 186 tests, ruff clean. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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1d3f6c450b |
Users, groups, permissions, model settings and reasoning display
Four features, plus the schema machinery they needed. **Schema sync.** The first live instance had data in it, and create_all only creates missing *tables* -- a new column silently never appeared. db/migrations.py now diffs the declared models against the database and ALTER TABLE ... ADD COLUMN for what is missing, deriving a backfill default from the column type (SQLite refuses a NOT NULL column without one, and a Python-side `default=dict` cannot be expressed in DDL). Verified against a copy of the live database: eight changes applied, all rows preserved, second run a no-op. Renames, drops and retypes are still manual and say so. **Permissions.** A flat set of named booleans: an instance baseline widened by each group the user belongs to. A group grants and never denies -- with denies, "why can this user not do X" cannot be answered without simulating every group. Admins bypass entirely, because an admin can grant it back to themselves in two clicks and pretending otherwise is theatre. Model *access* is separate: public, or granted to groups. The picker is not the boundary -- switching a chat to a model you cannot reach is a 403. **Model settings.** Ordering, pinned-first, an instance default and a per-user default, display names, descriptions, capability flags, and uploaded images. Images are stored and served locally rather than by URL: a remote URL makes every page render a request to a third party. Uploads are validated by magic number, not the declared content type, and stored under a random name. Models with no image get a generated initial whose hue is derived from the model id, so it is stable. **Reasoning display.** Streams into its own collapsible block above the answer, labelled "Thought for 14 seconds", collapsed once finished, and never replayed as context on the next turn. Two sources: the reasoning_content delta field, and <think> tags inline in content -- the latter needs a streaming splitter because the tags arrive split across chunks. Models emitting no reasoning show nothing, via a :has() rule rather than JavaScript. Verified against qwen35-9b on llama-swap: 694 reasoning events, 52 answer tokens, cleanly separated. Two bugs found and fixed while testing: - A bare `Mapped[list]` relationship is treated by SQLAlchemy as a scalar and returns None instead of []. It needs the element type. - FastAPI substitutes the default for an empty form value, so with `x: str | None = Form(None)` a submitted `x=` is indistinguishable from an absent field. That silently broke clearing a system prompt or a temperature. update_chat now reads the raw form and checks key presence. 143 tests, ruff clean. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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Jaroslav Beneš
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0f44e8d24c |
Working chat: auth, connections, streaming, folders
LLeMbas now runs end to end. Register, add an OpenAI-compatible connection, and hold a real streaming conversation organised into folders. Verified against the local llama-swap instance. Streaming is the one genuinely tricky part. Sending a message returns two HTML fragments -- the user bubble and an empty assistant bubble carrying an sse-connect -- and that attribute is the ONLY thing that starts a generation. Rendering an incomplete assistant message as a streaming shell falls out of the same template, which means loading a page whose last reply never finished simply picks it up again. Details worth knowing about, each commented where it matters: - SSE payloads are split across several data: lines. A raw newline in one data: line truncates the event, which shows up the first time a model emits a code block. - Markdown is rendered server-side by the same helper for both the page and the final streamed frame, so the two cannot disagree. The fence renderer is replaced outright rather than using markdown-it's highlight option, which re-wraps output in a second <pre>. - escape_text is html.escape, not nh3.clean_text: it escapes character by character, so escaping stream chunks separately equals escaping the whole string. - The stream opens its own session via session_scope(); it outlives the request handler and the dependency-scoped session may be closed. - Deleting a folder keeps the chats inside it (FK is SET NULL). Losing a conversation to a mis-clicked folder delete is unforgivable. - Login failures use one message for "no such account" and "wrong password" so the form cannot enumerate registered addresses. Also adds deploy/ for the gamebox install at https://chat.lan: system unit, nginx vhost with buffering off (buffering on turns streaming into one lump at the end), and install/update scripts following the same service-user and /srv bind-mount conventions as llama-swap and comfyui. 70 tests, ruff clean. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |