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feat(channel): unify deliverable outbound and WeChat attachments

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Require deliverable:true for all channel attachments including images; extend save_deliverable_attachment with attachment_id; add WeChat proactive attachment delivery; inject channel file rules via system prompt instead of repeating on every user message.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
oliver 2026-07-13 15:56:50 +08:00
parent dc5da21f5a
commit cbe68a54cd
14 changed files with 440 additions and 125 deletions
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42
runtime/tools/public/save_deliverable_attachment_tool.py
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@ -18,13 +18,32 @@ def _guess_mime(path: Path, override: str) -> str:
def save_deliverable_attachment_tool() -> ToolSpec:
def _handler(args: dict[str, Any]) -> dict[str, Any]:
raw = str(args.get("path") or "").strip().strip('"').strip("'")
if not raw:
return {"ok": False, "error": "path_required"}
attachment_id = str(args.get("attachment_id") or "").strip().lower()
raw_path = str(args.get("path") or "").strip().strip('"').strip("'")
display_name = str(args.get("name") or "").strip()
mime_override = str(args.get("mime") or "").strip()
if attachment_id:
store = AttachmentAssetStore()
meta = store.get_meta(attachment_id)
if meta is None:
return {"ok": False, "error": "attachment_not_found", "attachment_id": attachment_id}
name = display_name or meta.name
return {
"ok": True,
"attachment_id": meta.attachment_id,
"name": name,
"mime": mime_override or meta.mime,
"bytes": meta.bytes,
"width": meta.width,
"height": meta.height,
"deliverable": True,
}
if not raw_path:
return {"ok": False, "error": "path_or_attachment_id_required"}
try:
p = resolve_workspace_path(raw)
p = resolve_workspace_path(raw_path)
except ValueError as exc:
return {"ok": False, "error": str(exc)}
if not p.exists() or not p.is_file():
@ -48,9 +67,11 @@ def save_deliverable_attachment_tool() -> ToolSpec:
return ToolSpec(
name="save_deliverable_attachment",
description=(
"Register a workspace file for outbound channel delivery (WhatsApp/WeChat). "
"Call this after generating a file with write_file or run_command when the user should receive it as an attachment. "
"write_file alone does not send files to messaging channels."
"Mark an attachment for outbound channel delivery (WhatsApp/WeChat). "
"Required before the user receives any generated file, image, or video in a messaging channel. "
"Use path for workspace files (after write_file or run_command), or attachment_id for assets "
"already in the attachment store (e.g. after cloudflare_image_generate). "
"Generating content alone does not send attachments to the channel."
),
parameters={
"type": "object",
@ -59,16 +80,19 @@ def save_deliverable_attachment_tool() -> ToolSpec:
"type": "string",
"description": "Workspace file path (relative to workspace root or allowed absolute path).",
},
"attachment_id": {
"type": "string",
"description": "Existing attachment_id from image/video generation tools.",
},
"name": {
"type": "string",
"description": "Optional download filename shown to the user.",
},
"mime": {
"type": "string",
"description": "Optional MIME type override (e.g. application/vnd.openxmlformats-officedocument.spreadsheetml.sheet).",
"description": "Optional MIME type override.",
},
},
"required": ["path"],
"additionalProperties": False,
},
handler=_handler,