* fix(mcp): survive transient WS transport drops for Box stdio MCP servers
A Box-backed stdio MCP server (e.g. pab1it0/prometheus) would periodically
error on the frontend with Box managed process exited unexpectedly /
Failed after 4 attempts once the session had been alive for a while.
Root cause: the managed MCP process lives in the Box runtime and SURVIVES a
WebSocket transport drop, but _lifecycle_loop treated any monitor completion
as a fatal process death. It then ran the finally-block cleanup — which STOPS
the still-healthy managed process — and did a full 4-attempt exponential
backoff rebuild. Under an occasionally-stalled single-worker event loop the
mcp websocket client misses a ping/pong, the transport drops, and this
self-inflicted teardown loop is what the user sees.
Fixes:
- _lifecycle_loop: when the health monitor completes, re-check the real
managed-process state. If the process is still running, the transport
merely dropped: raise an internal _TransportReconnect signal instead of
Box managed process exited unexpectedly.
- _lifecycle_loop_with_retry: handle _TransportReconnect as a free, uncounted
reconnect (does not consume the fatal retry budget), so a long-lived session
survives arbitrarily many transient drops.
- finally-block: gate managed-process teardown on a _preserve_managed_process
flag so a transport-only reconnect closes just the WS, not the process.
- BoxStdioSessionRuntime.initialize: reuse an already-running managed process
instead of stopping+rebuilding it (which also re-ran the slow dependency
bootstrap); only (re)start when none is running. Adds
_managed_process_is_running() helper.
Pairs with langbot-plugin-sdk fix adding a server-driven WS heartbeat to the
managed-process relay, which prevents most drops in the first place.
* style(mcp): ruff format
* chore(deps): pin langbot-plugin 0.4.8 for the managed-process WS heartbeat fix
---------
Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>
The /change-password and /bind-space endpoints already refuse when
system.allow_modify_login_info is false, but /set-password did not,
leaving a path to alter login credentials on locked-down deployments
(e.g. public demo instances). Apply the same guard.
Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>
Normalize monitoring API responses before rendering so empty or error payloads with data:null cannot crash the dashboard. Also guard chart, token, and box session arrays before reading length/map.
Move the Page Bot (web_page_bot) embed test page out of the repo root into
examples/web-page-bot/ as a proper, LangBot-styled demo: a self-contained
index.html that loads the live widget.js against a running instance, plus
bilingual READMEs mirroring examples/http-bot/.
* docs(platform): add HTTP Bot adapter design (RFC)
Standalone server-to-server HTTP adapter for driving a pipeline from external
systems (LangBot Space ticketing et al). Inbound via the existing unified
webhook route; outbound via signed callback POSTs. Preserves pipeline-native
N->1 aggregation and 1->M multi-reply without a long-lived WebSocket.
No core changes required (router/aggregator/pipeline untouched).
* feat(platform): add standalone HTTP Bot adapter
A first-class, vendor-neutral message-platform adapter (http_bot) for
server-to-server integrations (LangBot Space ticketing et al). Drives a
pipeline over plain HTTP with no long-lived connection:
- Inbound: signed POST to the existing unified webhook route /bots/<uuid>,
carrying a caller-defined session_id mapped to the LangBot launcher id via
get_launcher_id -> per-session isolation. Preserves pipeline-native N->1
aggregation for free.
- Outbound: each reply_message / reply_message_chunk becomes one signed
callback POST to the config-only callback_url, delivered in per-session
sequence order with retry/backoff -> 1->M multi-reply.
- Sub-paths: /reset (drop a session) and /sync (block for the collapsed reply).
- Auth: symmetric HMAC-SHA256 both directions (timestamp + replay window),
no JWT/Turnstile, no socket.
Decisions: callback URL is config-only (SSRF closed); reset + sync shipped;
Python + TS reference clients shipped (signing verified byte-identical 3-way).
No core changes: the unified webhook router, aggregator, query pool and
pipeline are untouched. Adapter is auto-discovered from platform/sources/.
Adds:
src/langbot/pkg/platform/sources/http_bot.{py,yaml,svg}
src/langbot/pkg/platform/sources/http_bot_signing.py
docs/platforms/http-bot.md, docs/http-bot-openapi.json
examples/http-bot/{client.py,client.ts,README.md}
Updates docs/HTTP_BOT_ADAPTER_DESIGN.md (status: implemented).
* docs(examples): add interactive HTTP Bot playground (browser debug console)
A single-file aiohttp web app (examples/http-bot/playground.py) that lets you
chat with a RUNNING http_bot bot from the browser and watch the protocol live:
signed inbound POST -> 202 ack -> 1->M signed callbacks streamed back via SSE,
with a debug panel showing the signature, HTTP status, and per-callback
sequence/verification. Light LangBot-styled UI.
On startup it reads the API key + http_bot bot from data/langbot.db and points
the bot's callback_url + secrets back at itself via the LangBot API (live
reload, no restart). README updated with a playground section.
* docs(examples): add Chinese README for http-bot reference clients
* style(platform): use </> code icon for http_bot adapter logo
* docs(examples): point http-bot guide links to docs.langbot.app
* style(platform): make http_bot icon a transparent monochrome </> so WebUI tints it like other adapters
* Revert to colorful </> badge for http_bot icon (WebUI renders it as-is)
The plain `docker compose up -d` leaves the Box sandbox runtime off
(it's gated behind the box/all profile), so sandbox tools, skill
add/edit and stdio MCP don't work out of the box. Use
`docker compose --profile all up -d` across all 9 README translations so
the default quick-start brings up the sandbox-capable stack.
The in-product plugin/add-extension help links went through
link.langbot.app/{lang}/docs/plugins, which now 404s (it resolved to the
removed /usage/plugin/plugin-intro path). Point them directly at the
current docs page docs.langbot.app/{lang}/plugin/plugin-intro (verified
200 for zh/en/ja).
The previous truncate/shrink-0 pass only touched leaf nodes, but the
min-content floor was set by two ancestors: the flex-1 left group lacked
min-w-0, and CardHeader is a CSS grid whose implicit single column
defaults to min-content. Constrain both (min-w-0 on the header grid +
explicit grid-cols-[minmax(0,1fr)], min-w-0 on the inner flex groups) so
the provider name / base_url+key subtitle actually truncate instead of
forcing the card — and the whole settings modal — wider than the viewport.
- PanelToolbar: allow wrapping and tighten padding on small screens so the
primary action (e.g. "创建 API 密钥") no longer runs off the dialog edge.
- ProviderCard header: let the provider name truncate and pin the model-count
badge and right-side action group with shrink-0 so credits / + controls stay
inside the card on narrow viewports.
Radix tooltips open on hover/focus only and stay closed on touch input,
so on mobile every hover tooltip was unreachable. Detect coarse/no-hover
pointers via matchMedia and drive the tooltip's open state ourselves so a
tap on the trigger toggles it. Desktop hover/focus behaviour is unchanged
(we only intercept the tap when the device has no hover capability). Fixes
all tooltips app-wide from the shared primitive.
The PostgreSQL migration test had the same hardcoded 0005 head
assertion as the SQLite one; resolve the actual head from the Alembic
ScriptDirectory so 0006 (and future migrations) don't break it.
CI follow-up to the local/remote MCP work:
- Apply ruff format to provider/tools/loaders/mcp.py and the 0006
normalize-remote-mode migration (Lint job failed on formatting).
- test_migrations.py hardcoded the head revision as 0005_*, which broke
once 0006 landed. Resolve the actual head from the Alembic
ScriptDirectory so future migrations don't require editing the test.
Two unrelated frontend fixes:
- LanguageSelector mounts each time the sidebar account dropdown opens and
unconditionally called i18n.changeLanguage() on mount, emitting a
languageChanged event even when the language was unchanged. That handed
every useTranslation() consumer a fresh `t` reference, re-running effects
keyed on `t` (e.g. the plugins page system-status fetch) and surfacing as
a page "refresh". Guard the call so it only fires on an actual change.
- Plugin logs auto-refresh control changed from a toggle Button to a
Switch + Label; the on/off button i18n keys are replaced by a single
static logsAutoRefresh label across all 8 locales.
Port the Space marketplace recommendation carousel UX into the in-app
add-extension page: a 10s auto-advance driven by a smooth countdown ring
that doubles as a pause/resume toggle, and manual prev/next now reset the
countdown. Adds market.recommendation.{pause,resume} across 8 locales.
Hyu