Commit Graph
6 Commits
Author SHA1 Message Date
Jaroslav BenešandClaude Opus 5 b8e7745311 An instance that can be somebody else's
A name, a tagline, a logo, a favicon and the launcher icons derived from it; the
Middle-earth strings as data; themes as token sets; and a stylesheet for what
none of that reaches. All four are on one page, in one settings group.

The snapshot is a Jinja global over a process-level cache, because render() has
no session and four render paths never reach it at all -- the sign-in page, the
error pages, the offline page and the SSE fragments. A context value would have
had to be threaded through every one and would still have missed those. It being
a global is also what lets mark() branch on an uploaded logo without any of its
six call sites learning about branding; the macro that renders the sidebar link
is called brandlink now, because a macro imported as `brand` shadows the global
for the whole template and took out every page at once.

Defaults in code and overrides in the database, as the prompt fragments do, with
one difference stated in the module: an empty fragment means off, an empty
flavour string means the shipped wording. And blanked rather than dropped --
settings_store.update merges, so an omitted key leaves what was stored last time
and "I typed the default back in" would store something different from "I changed
nothing".

A custom theme sets a handful of tokens and inherits the rest, and the
inheritance is a CSS fact: tokens.css matches [data-base="shire"] as well as
[data-theme="shire"], so a custom light theme lands on parchment rather than four
light colours on near-black. Values are validated on read rather than on save,
because a theme written straight into the settings table still has to produce a
stylesheet that parses -- a `}` in a value ends the rule and silently breaks
every rule after it. The soft variants are derived from the accent, or a changed
accent leaves focus rings in the old hue and reads as half-working.

/branding.css is a route, not an inline block: an external stylesheet has no HTML
context to escape from. The link carries a content hash, so a save is not left to
the browser's cache, and it is deliberately outside the service worker's precache
list, which is versioned by the release.

The instance name moved off /admin/general rather than being duplicated there.
An upgrade keeps it: the general row is read as a seed exactly while the branding
row has never mentioned the name, which is `key in row` and not `row[key] is
truthy` -- the two read alike would resurrect the old name underneath a cleared
one.

The theme list stops being a hard-coded pair in five places. Every failure mode
in that area is silent, so it is driven under a DOM stub as well as tested.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-06 15:42:25 +02:00
Jaroslav BenešandClaude Opus 5 131a4083f8 The terminal learns where one command ends, and can be dragged wider
"The last command and its output" was not something the panel could honestly
offer. sendToChat took the last forty rows of the screen buffer, hard-wrapped at
the terminal's width with no way to tell a wrap from a newline -- its own comment
said so. So bash and zsh are given the OSC 133 markers VS Code and WezTerm use,
and Copy, Send and an Auto toggle are built on those.

The integration is written by the PTY command string itself, with printf. sshd
runs that string through $SHELL -c, so it can case on the shell's own name and
needs no probe, no second channel and no writable home. Passing it through the
environment does not work -- every distribution ships AcceptEnv LANG LC_*, so
anything else is dropped silently -- and feeding `source ...` in as keystrokes
races a slow .zshrc, echoes into the scrollback and lands in shell history.

Nothing needs hiding, which is the point of choosing it: the setup runs before
the shell exists and never writes to the PTY's input side, so there is nothing
to echo and no fan-out gate to build.

Two things were wrong in the first version and both were found by running it
against real shells rather than the fake one. bash: the DEBUG trap fires before
every simple command *including each one inside PROMPT_COMMAND*, so $? read from
there is whatever ran a moment ago -- every command reported success. The status
is captured in the trap now, which also removes the two-entry PROMPT_COMMAND
dance entirely. zsh: $ZDOTDIR is already ours by the time .zshenv runs, so the
shims were sourcing themselves and none of the user's configuration loaded; the
original is passed on the exec line.

Parsing is server-side. The `behind` path resets the terminal and replays a
truncated scrollback, so a client parser routinely sees a finish with no start;
two tabs share one shell and can disagree; and what comes out of this ends up
inside a prompt, so deriving it here leaves nothing to disbelieve. The bytes are
fanned out unchanged -- xterm consumes an OSC it has no handler for.

Output is bounded head and tail, 48KB and 16KB: a build that fails ten megabytes
in has the invocation at the top and the error at the bottom. Carriage returns
collapse to the last state of each line, which is the difference between a
usable prompt and two megabytes of spinner. The fence is sized to its content,
because output containing three backticks would otherwise break out and read as
prose.

Any shell that is not bash or zsh starts exactly as it did before. The buttons
then scrape the screen and say so, and Auto is disabled rather than degraded:
forty arbitrary lines on every message is worse than nothing.

Also a generic [data-resize] handle, keyboard included, persisted the way the
theme is. The inspector and sidebar can have it whenever they want it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-02 17:28:38 +02:00
Jaroslav BenešandClaude Opus 5 b6cea42631 A directory the model knows about, and @ to name a file in it
An agent chat used to open with the model knowing the name of a machine and
nothing about what was on it, so the first two rounds of every reply went on
finding out. It now gets a listing: one read-only command, `git ls-files` where
that works and `find` otherwise, falling back to an SFTP walk that always does.
git first because a repository already carries somebody's considered list of
what is not part of the project, and reproducing it by hand is how an index
ends up mostly build output.

The listing is budgeted rather than dumped. A tree of a thousand files is worse
than no tree -- it costs the window on every request forever and buries the four
names that mattered -- so directories that will not fit are shown as a count and
the model is told to open one itself. Collapsing picks the deepest and largest
first: by saving alone it would take `src/` before `src/web/static/vendor/`,
because it contains it, and lose every name worth having.

Read from a cache and never fetched. `harness.context_variables` is synchronous
and sits on the request path; the walk happens in the generation setup, which is
async and already doing network work, with a short wait. A chat whose first
reply outruns its first walk simply has no listing that turn and the fragment
disappears rather than appearing as an empty heading.

Then `@`, over the same index and over the library, and `/` for commands with an
Alt-based keyboard for the same jobs. A mentioned file arrives as contents, not
a reference -- a small model asked to call file_read often does not bother -- and
it arrives with its absolute path and the machine it came from, because a model
handed `main.py` cannot tell which of four it is and cannot name it back when
asked to change something.

The rule that matters for `/`: a message that merely starts with a slash still
sends. `//` escapes and an unrecognised command is posted as written. Swallowing
somebody's message is a much worse failure than an unknown command.

Two exceptions to Manual mode now, not one. Browsing and indexing are a person
acting, not a model, so neither passes through policy.py -- the same argument
the terminal panel rests on.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-02 17:04:41 +02:00
Jaroslav BenešandClaude Opus 4.8 7456525d19 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>
2026-07-21 17:56:50 +02:00
Jaroslav BenešandClaude Opus 4.8 a071d8486b 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>
2026-07-21 14:33:04 +02:00
Jaroslav BenešandClaude Opus 4.8 dd9e0e9440 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>
2026-07-21 11:04:13 +02:00