feat: wire story-promotion into update_task_status + filter done stories from get_claude_context

update_task_status now delegates to updateTaskStatusWithStoryPromotion
and surfaces story_status_change ('promoted' | 'demoted' | null) in the
response so Claude Code can act on story completion without a separate
read call.

get_claude_context adds an OR-filter on tasks so stories where every
task is DONE are skipped — only surfaces stories that still have work to
do (no tasks, or at least one non-DONE task).

src/tools/get-claude-context.ts

@@ -58,6 +58,10 @@ export function registerGetClaudeContextTool(server: McpServer) {
             where: {
               sprint_id: activeSprint.id,
               status: { in: ['OPEN', 'IN_SPRINT'] },
+              OR: [
+                { tasks: { none: {} } },
+                { tasks: { some: { status: { not: 'DONE' } } } },
+              ],
             },
             orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
             select: {

src/tools/update-task-status.ts

@@ -1,10 +1,10 @@
 import { z } from 'zod'
 import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js'
-import { prisma } from '../prisma.js'
 import { requireWriteAccess } from '../auth.js'
 import { userCanAccessTask } from '../access.js'
 import { toolError, toolJson, withToolErrors } from '../errors.js'
 import { TASK_STATUS_API_VALUES, taskStatusFromApi, taskStatusToApi } from '../status.js'
+import { updateTaskStatusWithStoryPromotion } from '../lib/tasks-status-update.js'
 
 const inputSchema = z.object({
   task_id: z.string().min(1),
@@ -31,15 +31,15 @@ export function registerUpdateTaskStatusTool(server: McpServer) {
         if (!(await userCanAccessTask(task_id, auth.userId))) {
           return toolError(`Task ${task_id} not found or not accessible`)
         }
-        const task = await prisma.task.update({
-          where: { id: task_id },
-          data: { status: dbStatus },
-          select: { id: true, status: true, implementation_plan: true },
-        })
+        const { task, storyStatusChange } = await updateTaskStatusWithStoryPromotion(
+          task_id,
+          dbStatus,
+        )
         return toolJson({
           id: task.id,
           status: taskStatusToApi(task.status),
           implementation_plan: task.implementation_plan,
+          story_status_change: storyStatusChange,
         })
       }),
   )