Group-chat reply slot fallback:
- The platform blocks proactive sends in group chats; outbound paths
(cron summaries, async-task completions, generated image/music/3D
delivery, TTS audio) silently failed because they fell through to
the proactive-send command. New bounded LRU maps each group chat
to its most recent inbound frame id; the dispatcher prefers that
reply slot and falls through to proactive only for single chats.
- Centralised text and media dispatch through a single helper so the
group rule never has to be re-implemented per outbound path.
Upload size pre-check + auto-downgrade:
- Without client-side limits, oversized uploads streamed for ~1 minute
before the server rejected at the finish step — users saw nothing
arrive in their chat. The new decision layer mirrors the platform's
hard limits and produces three outcomes: rejected with a friendly
reason, downgraded to a generic file delivery with an inline note,
or pass-through unchanged.
- Files over 20MB reject. Images / videos over their 10MB limit
downgrade to file. Voice content that isn't AMR or exceeds 2MB
downgrades. AMR voice within 2MB stays native.
appmsg inbound parsing:
- Forwarded complex messages (document transfers, article links,
miniprogram cards) used to fall into the inbound switch's default
branch and silently drop. The new branch flattens four sub-types
into a text marker the agent reads plus any media that needs to
reach downstream tools — document forwards reuse the same magic-
byte sniff and per-conversation upload layout as native file
inbound, so extension recovery and chat-uploads serving work
identically.
- Article links produce "[链接] title\ndescription\nurl" so the agent
can summarize without round-tripping. Miniprograms surface their
title. Unknown sub-types still emit a generic marker so the agent
is never blind.
WeCom quoted-message context:
- Parse the body.quote field that arrives alongside any inbound message
(text / image / voice / file / mixed sub-types). When a user long-
presses a previous bot bubble and types a follow-up like "解释一下",
the agent now sees both the user's new text and the referenced
content as proper context — replies stay on topic instead of
guessing what was being explained.
- Quoted images / files are downloaded through the same pipeline as
inbound new media (magic-byte sniff, ZIP container peek for
DOCX / XLSX / PPTX recovery, chat-uploads layout) so the vision
sidecar and document tools can actually analyse what was quoted.
- Reading order in the assembled prompt: "[引用消息: ...]\n<user text>"
first, then quoted media parts, then the user's own current-message
media. Mixed quotes flatten into a space-joined summary.
Multimodal sidecar settings preservation:
- The bulk settings PUT used to unconditionally overwrite the vision /
video sidecar model ids — null in a partial payload became "" in
the DB, silently wiping the configured sidecar every time a user
saved an unrelated settings page (System / Music / Image / etc.).
Symptom: "I picked a vision model, saved a different settings tab,
now the bot can't see images anymore."
- Bulk save now guards both keys with non-null checks, matching the
pattern used for music / 3D / image / video / tts / stt blocks.
- A dedicated /settings/sidecar endpoint always writes both keys, so
the sidecar UI can still explicitly clear via null without leaking
the write-on-null semantics into every other settings save.
- Frontend sidecar card switches to the dedicated endpoint; other
settings pages keep their existing partial-payload behaviour.
Inbound (WeCom):
- Save uploaded media under data/chat-uploads/{conversationId}/ with full
fileName/path/fileUrl/storedName/fileSize on the content part. Web mirrors
of an IM conversation now show real thumbnails instead of "未命名".
- Magic-byte sniff (PDF / PNG / JPEG / GIF / Office / ODF / archives /
audio / video) recovers a real extension when the platform omits filename
for forwarded files — no more PDFs labelled "file.bin".
- ZIP container peek distinguishes DOCX / XLSX / PPTX / VSDX / ODT / ODS /
ODP / EPUB / JAR from a plain zip via discriminator paths and the OASIS
mimetype entry.
Outbound (WeCom):
- Chunk upload field name corrected so server-side actually stores the
bytes — file messages used to arrive with correct filename/size but
empty content, breaking every PDF / DOCX / PPTX recipient.
- Scan agent text for served-file URLs in both the text-reply and
content-parts paths; fetch bytes from the in-memory generated-file
cache and dispatch through the native chunk upload + media message
protocol so users receive a tappable file card instead of an
unopenable markdown link. Cache miss surfaces a clear retry hint.
Async tool result forwarding:
- New AsyncTaskMediaDispatcher routes generation completions (image,
video, music, 3D model) to whichever IM channel the conversation is
bound to via ChannelSessionStore + ChannelManager. Web / webchat
conversations are intentionally skipped — their SSE stream already
renders the result.
- Wired into all four generation services so IM users actually receive
generated media as native attachments. Each part now carries an
absolute disk path so adapters read bytes locally instead of round-
tripping through an authenticated served URL.
Slack native file upload:
- SlackChannelAdapter overrides the content-parts dispatch. Image /
audio / video / file / model3d parts ride filesUploadV2 so users see a
file card with preview thumbnail bound to the same thread as the
originating message. Text parts continue through chat.postMessage.
- Resolves bytes from the part's local path, falls back to an HTTP fetch
of fully-qualified URLs.
IM approval hint visibility:
- IM-driven approve / deny / auto-cancel / replay-error hints now go
through saveMessage + tracker broadcast in addition to the channel
adapter, so a Web mirror viewing the same conversationId sees the
resolution. Previously hints reached only the IM channel; the Web
admin console had no record of the outcome.
Adaptive paste-merge debounce:
- WeCom and other IM clients silently split long pasted prompts into
fragments that arrive 0.5-2 seconds apart, missing the existing 500ms
merge window. The agent then saw torn context and emitted multiple
conflicting replies.
- When the merged buffer crosses a content-length threshold, extend the
debounce window so subsequent fragments arrive in time. Default
500ms unchanged for normal short messages.
