Add description parameter to bd update command and MCP server

Fixes #114 and #122 by adding --description/-d flag to bd update CLI
and description parameter to MCP update_issue tool.

Changes:
- CLI: Added --description flag to updateCmd
- RPC: Added Description field to UpdateArgs
- Daemon: Updated updatesFromArgs to handle description
- MCP: Added description to update_issue, UpdateIssueParams, and clients
- Storage: description already supported in allowedUpdateFields

Tested in both daemon and direct modes.

integrations/beads-mcp/src/beads_mcp/bd_client.py

@@ -427,6 +427,8 @@ class BdCliClient(BdClientBase):
             args.extend(["--assignee", params.assignee])
         if params.title:
             args.extend(["--title", params.title])
+        if params.description:
+            args.extend(["--description", params.description])
         if params.design:
             args.extend(["--design", params.design])
         if params.acceptance_criteria:

integrations/beads-mcp/src/beads_mcp/bd_daemon_client.py

@@ -279,6 +279,8 @@ class BdDaemonClient(BdClientBase):
             args["assignee"] = params.assignee
         if params.title is not None:
             args["title"] = params.title
+        if params.description is not None:
+            args["description"] = params.description
 
         data = await self._send_request("update", args)
         return Issue(**(json.loads(data) if isinstance(data, str) else data))

integrations/beads-mcp/src/beads_mcp/models.py

@@ -73,6 +73,7 @@ class UpdateIssueParams(BaseModel):
     priority: int | None = Field(default=None, ge=0, le=4)
     assignee: str | None = None
     title: str | None = None
+    description: str | None = None
     design: str | None = None
     acceptance_criteria: str | None = None
     notes: str | None = None

integrations/beads-mcp/src/beads_mcp/server.py

@@ -322,7 +322,7 @@ async def create_issue(
 
 @mcp.tool(
     name="update",
-    description="""Update an existing issue's status, priority, assignee, design notes,
+    description="""Update an existing issue's status, priority, assignee, description, design notes,
 or acceptance criteria. Use this to claim work (set status=in_progress).""",
 )
 @require_context
@@ -332,6 +332,7 @@ async def update_issue(
     priority: int | None = None,
     assignee: str | None = None,
     title: str | None = None,
+    description: str | None = None,
     design: str | None = None,
     acceptance_criteria: str | None = None,
     notes: str | None = None,
@@ -350,6 +351,7 @@ async def update_issue(
         priority=priority,
         assignee=assignee,
         title=title,
+        description=description,
         design=design,
         acceptance_criteria=acceptance_criteria,
         notes=notes,

integrations/beads-mcp/src/beads_mcp/tools.py

@@ -175,6 +175,7 @@ async def beads_update_issue(
     priority: Annotated[int | None, "New priority (0-4)"] = None,
     assignee: Annotated[str | None, "New assignee"] = None,
     title: Annotated[str | None, "New title"] = None,
+    description: Annotated[str | None, "Issue description"] = None,
     design: Annotated[str | None, "Design notes"] = None,
     acceptance_criteria: Annotated[str | None, "Acceptance criteria"] = None,
     notes: Annotated[str | None, "Additional notes"] = None,
@@ -191,6 +192,7 @@ async def beads_update_issue(
         priority=priority,
         assignee=assignee,
         title=title,
+        description=description,
         design=design,
         acceptance_criteria=acceptance_criteria,
         notes=notes,