feat: Email Team button + custom-email dialog on project page

Adds a PROJECT_TEAM recipient type to the message router (resolver
returns team members + project lead) and an "Email Team" button on
the admin project detail page that opens a self-contained dialog
matching the look of /admin/messages: subject, body (pre-filled
with "Hello [Project Title] team,\n\n"), live HTML preview iframe,
"Send test to me" + "Send to N" actions.

The composer reuses the existing message.previewEmail and
message.send tRPC procedures end-to-end — no parallel email
infrastructure introduced.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/superpowers/plans/2026-04-28-pr7-email-team-from-project.md

@@ -0,0 +1,182 @@
+# PR 7 — "Email Team" Modal on Project Detail Page
+
+> **For agentic workers:** Use superpowers:executing-plans for inline execution.
+
+**Goal:** Add an "Email Team" button to `/admin/projects/[id]` that opens a modal composing a custom email to that project's team. Same look + features as `/admin/messages` (subject, body, live HTML preview, send-to-all). Body pre-filled with `Hello [Project Title] team,\n\n` so admin can edit and add their custom content beneath.
+
+**Architecture:** Adds `PROJECT_TEAM` to the existing `RecipientType` enum (5 places) + a resolver branch. New self-contained `<ProjectEmailDialog>` component reuses the existing `message.previewEmail` and `message.send` procedures. No template-system rewrite.
+
+**Spec:** New ask added during PR review (2026-04-28). Not in original spec but adjacent to §B (admin views).
+
+## File map
+
+| File | Action | Why |
+|------|--------|-----|
+| `src/server/routers/message.ts` | Modify | Add `PROJECT_TEAM` to 4 input enums + 1 resolver case |
+| `src/components/admin/project-email-dialog.tsx` | Create | Self-contained modal with subject + body + live preview + send |
+| `src/app/(admin)/admin/projects/[id]/page.tsx` | Modify | Add "Email Team" button next to Edit button; render the dialog |
+| `tests/unit/message-recipient-project-team.test.ts` | Create | Resolver returns team members + submittedByUserId |
+
+## Tasks
+
+### Task 1: Backend — `PROJECT_TEAM` recipient type
+
+- [ ] **Step 1: Write failing test**
+
+```ts
+// tests/unit/message-recipient-project-team.test.ts
+import { afterAll, beforeAll, describe, expect, it } from 'vitest'
+import { prisma, createCaller } from '../setup'
+import {
+  createTestUser, createTestProgram, createTestProject, cleanupTestData, uid,
+} from '../helpers'
+import { messageRouter } from '../../src/server/routers/message'
+
+describe('message.previewRecipients — PROJECT_TEAM', () => {
+  let programId: string
+  let admin: { id: string; email: string; role: 'SUPER_ADMIN' }
+  let projectId: string
+  const userIds: string[] = []
+
+  beforeAll(async () => {
+    const program = await createTestProgram({ name: `proj-team-${uid()}` })
+    programId = program.id
+
+    const lead = await createTestUser('APPLICANT')
+    userIds.push(lead.id)
+    const project = await createTestProject(programId, { title: 'TestProj' })
+    projectId = project.id
+    await prisma.project.update({ where: { id: projectId }, data: { submittedByUserId: lead.id } })
+
+    const member1 = await createTestUser('APPLICANT')
+    const member2 = await createTestUser('APPLICANT')
+    userIds.push(member1.id, member2.id)
+    await prisma.teamMember.createMany({
+      data: [
+        { id: uid('tm'), projectId, userId: member1.id, role: 'MEMBER' },
+        { id: uid('tm'), projectId, userId: member2.id, role: 'MEMBER' },
+      ],
+    })
+
+    const a = await createTestUser('SUPER_ADMIN')
+    userIds.push(a.id)
+    admin = { id: a.id, email: a.email, role: 'SUPER_ADMIN' }
+  })
+
+  afterAll(async () => {
+    await cleanupTestData(programId, userIds)
+  })
+
+  it('counts the lead + 2 team members', async () => {
+    const caller = createCaller(messageRouter, admin)
+    const result = await caller.previewRecipients({
+      recipientType: 'PROJECT_TEAM',
+      recipientFilter: { projectId },
+    })
+    expect(result.totalApplicants).toBe(3)
+  })
+
+  it('returns 0 when projectId is missing', async () => {
+    const caller = createCaller(messageRouter, admin)
+    const result = await caller.previewRecipients({
+      recipientType: 'PROJECT_TEAM',
+      recipientFilter: {},
+    })
+    expect(result.totalApplicants).toBe(0)
+  })
+})
+```
+
+- [ ] **Step 2: Run, expect FAIL** — `'PROJECT_TEAM'` not in enum.
+
+- [ ] **Step 3: Patch `src/server/routers/message.ts`**
+
+Replace ALL FIVE enum literal lines:
+
+```ts
+recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'ALL']),
+```
+
+with:
+
+```ts
+recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'PROJECT_TEAM', 'ALL']),
+```
+
+(Use Edit's `replace_all: true` since the line is identical at all 5 occurrences.)
+
+Add a new case in `resolveRecipients` (after `'PROGRAM_TEAM'`):
+
+```ts
+    case 'PROJECT_TEAM': {
+      const projectId = filter?.projectId as string
+      if (!projectId) return []
+      const [teamMembers, project] = await Promise.all([
+        prisma.teamMember.findMany({
+          where: { projectId },
+          select: { userId: true },
+        }),
+        prisma.project.findUnique({
+          where: { id: projectId },
+          select: { submittedByUserId: true },
+        }),
+      ])
+      const ids = new Set<string>()
+      for (const tm of teamMembers) ids.add(tm.userId)
+      if (project?.submittedByUserId) ids.add(project.submittedByUserId)
+      return [...ids]
+    }
+```
+
+- [ ] **Step 4: Re-run, expect PASS.**
+
+### Task 2: Build `<ProjectEmailDialog>`
+
+- [ ] **Step 1: Create the component** (full code in execution)
+
+Behaviour:
+- Open via `open: boolean; onClose: () => void; projectId: string; projectTitle: string` props.
+- On open, body field is pre-filled: ``Hello ${projectTitle} team,\n\n``. Cursor placed at the end.
+- Subject field default: empty (admin types).
+- Live HTML preview pane below the form, calling `message.previewEmail` with `{ subject, body }` (debounced 300ms).
+- Recipient count line: calls `message.previewRecipients` with `PROJECT_TEAM` + `{ projectId }`. Shows "Will email N team members."
+- "Send Test" button: sends to the admin only via `message.sendTest`.
+- "Send" button: calls `message.send` with `recipientType: 'PROJECT_TEAM'`, `recipientFilter: { projectId }`, `deliveryChannels: ['EMAIL']`, `linkType: 'NONE'`.
+- On success: toast + close dialog. On error: toast.
+
+### Task 3: Wire the button on project detail page
+
+- [ ] **Step 1: Add button next to Edit** in `src/app/(admin)/admin/projects/[id]/page.tsx`:
+
+```tsx
+<Button variant="outline" onClick={() => setEmailDialogOpen(true)}>
+  <Mail className="mr-2 h-4 w-4" />
+  Email Team
+</Button>
+```
+
+(Add `Mail` to the lucide imports. Add `useState` for `emailDialogOpen`.)
+
+Render the dialog at the bottom of the page:
+
+```tsx
+{project && (
+  <ProjectEmailDialog
+    open={emailDialogOpen}
+    onClose={() => setEmailDialogOpen(false)}
+    projectId={project.id}
+    projectTitle={project.title}
+  />
+)}
+```
+
+### Task 4: Verify + commit
+
+- [ ] `npx vitest run tests/unit` → all pass.
+- [ ] `npm run typecheck` → clean.
+- [ ] `npm run build` → clean.
+- [ ] Commit with message referencing PR 7.
+
+## Out of scope
+
+Template picker (admins can use plain body for now; integration with template system can land later). HTML editor (plain textarea — same UX as messages page composer).

src/app/(admin)/admin/projects/[id]/page.tsx

@@ -75,7 +75,9 @@ import {
   Eye,
   Plus,
   X,
+  Mail,
 } from 'lucide-react'
+import { ProjectEmailDialog } from '@/components/admin/project-email-dialog'
 import { toast } from 'sonner'
 import { formatDateOnly } from '@/lib/utils'
 import { getCountryName, getCountryFlag } from '@/lib/countries'
@@ -161,6 +163,7 @@ function ProjectDetailContent({ projectId }: { projectId: string }) {
 
   // State for remove member confirmation
   const [removingMemberId, setRemovingMemberId] = useState<string | null>(null)
+  const [emailDialogOpen, setEmailDialogOpen] = useState(false)
 
   const addTeamMember = trpc.project.addTeamMember.useMutation({
     onSuccess: () => {
@@ -269,6 +272,11 @@ function ProjectDetailContent({ projectId }: { projectId: string }) {
           </div>
         </div>
 
+        <div className="flex items-center gap-2">
+          <Button variant="outline" onClick={() => setEmailDialogOpen(true)}>
+            <Mail className="mr-2 h-4 w-4" />
+            Email Team
+          </Button>
           <Button variant="outline" asChild>
             <Link href={`/admin/projects/${projectId}/edit`}>
               <Edit className="mr-2 h-4 w-4" />
@@ -276,6 +284,16 @@ function ProjectDetailContent({ projectId }: { projectId: string }) {
             </Link>
           </Button>
         </div>
+      </div>
+
+      {project && (
+        <ProjectEmailDialog
+          open={emailDialogOpen}
+          onClose={() => setEmailDialogOpen(false)}
+          projectId={project.id}
+          projectTitle={project.title}
+        />
+      )}
 
       <Separator />
 

src/components/admin/project-email-dialog.tsx

@@ -0,0 +1,177 @@
+'use client'
+
+import { useEffect, useMemo, useState } from 'react'
+import { trpc } from '@/lib/trpc/client'
+import { toast } from 'sonner'
+import {
+  Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle,
+} from '@/components/ui/dialog'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { Textarea } from '@/components/ui/textarea'
+import { Mail, Send, Eye } from 'lucide-react'
+
+interface Props {
+  open: boolean
+  onClose: () => void
+  projectId: string
+  projectTitle: string
+}
+
+function useDebounced<T>(value: T, delayMs: number): T {
+  const [debounced, setDebounced] = useState(value)
+  useEffect(() => {
+    const t = setTimeout(() => setDebounced(value), delayMs)
+    return () => clearTimeout(t)
+  }, [value, delayMs])
+  return debounced
+}
+
+export function ProjectEmailDialog({ open, onClose, projectId, projectTitle }: Props) {
+  const initialBody = useMemo(() => `Hello ${projectTitle} team,\n\n`, [projectTitle])
+  const [subject, setSubject] = useState('')
+  const [body, setBody] = useState(initialBody)
+  const [showPreview, setShowPreview] = useState(false)
+
+  // Reset state whenever the dialog opens for a new project
+  useEffect(() => {
+    if (open) {
+      setSubject('')
+      setBody(initialBody)
+      setShowPreview(false)
+    }
+  }, [open, initialBody])
+
+  const debouncedSubject = useDebounced(subject, 300)
+  const debouncedBody = useDebounced(body, 300)
+
+  const recipientPreview = trpc.message.previewRecipients.useQuery(
+    { recipientType: 'PROJECT_TEAM', recipientFilter: { projectId } },
+    { enabled: open }
+  )
+
+  const emailPreview = trpc.message.previewEmail.useQuery(
+    { subject: debouncedSubject, body: debouncedBody },
+    { enabled: showPreview && debouncedSubject.length > 0 && debouncedBody.length > 0 }
+  )
+
+  const sendTestMutation = trpc.message.sendTest.useMutation({
+    onSuccess: ({ to }) => toast.success(`Test email sent to ${to}`),
+    onError: (e) => toast.error(e.message),
+  })
+
+  const sendMutation = trpc.message.send.useMutation({
+    onSuccess: () => {
+      toast.success(`Email sent to ${recipientPreview.data?.totalApplicants ?? 0} team members`)
+      onClose()
+    },
+    onError: (e) => toast.error(e.message),
+  })
+
+  const recipientCount = recipientPreview.data?.totalApplicants ?? 0
+  const canSend = subject.length > 0 && body.length > 0 && recipientCount > 0
+
+  return (
+    <Dialog open={open} onOpenChange={(v) => !v && onClose()}>
+      <DialogContent className="max-w-2xl max-h-[90vh] overflow-y-auto">
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2">
+            <Mail className="h-5 w-5" />
+            Email Team — {projectTitle}
+          </DialogTitle>
+          <DialogDescription>
+            Compose a custom email to all members of this project&apos;s team.
+            {recipientPreview.isLoading
+              ? ' Loading recipients…'
+              : ` Will be sent to ${recipientCount} team member${recipientCount === 1 ? '' : 's'}.`}
+          </DialogDescription>
+        </DialogHeader>
+
+        <div className="space-y-4">
+          <div className="space-y-2">
+            <Label htmlFor="email-subject">Subject</Label>
+            <Input
+              id="email-subject"
+              value={subject}
+              onChange={(e) => setSubject(e.target.value)}
+              placeholder="Subject of your email"
+              maxLength={500}
+            />
+          </div>
+
+          <div className="space-y-2">
+            <Label htmlFor="email-body">Body</Label>
+            <Textarea
+              id="email-body"
+              value={body}
+              onChange={(e) => setBody(e.target.value)}
+              rows={10}
+              className="font-mono text-sm"
+              placeholder={initialBody}
+            />
+            <p className="text-xs text-muted-foreground">
+              The greeting is pre-filled — edit freely. The full email is wrapped in the standard
+              MOPC styled template when sent. Click &quot;Show preview&quot; to see exactly what recipients will see.
+            </p>
+          </div>
+
+          <div className="flex items-center gap-2">
+            <Button
+              type="button"
+              variant="outline"
+              size="sm"
+              onClick={() => setShowPreview((s) => !s)}
+              disabled={subject.length === 0 || body.length === 0}
+            >
+              <Eye className="mr-2 h-4 w-4" />
+              {showPreview ? 'Hide preview' : 'Show preview'}
+            </Button>
+            <Button
+              type="button"
+              variant="outline"
+              size="sm"
+              onClick={() => sendTestMutation.mutate({ subject, body })}
+              disabled={!canSend || sendTestMutation.isPending}
+            >
+              <Send className="mr-2 h-4 w-4" />
+              {sendTestMutation.isPending ? 'Sending…' : 'Send test to me'}
+            </Button>
+          </div>
+
+          {showPreview && emailPreview.data && (
+            <div className="border rounded-md overflow-hidden">
+              <div className="bg-muted text-xs px-3 py-2 border-b">Email preview</div>
+              <iframe
+                title="Email preview"
+                srcDoc={emailPreview.data.html}
+                className="w-full h-96 bg-white"
+                sandbox=""
+              />
+            </div>
+          )}
+        </div>
+
+        <DialogFooter>
+          <Button variant="ghost" onClick={onClose}>Cancel</Button>
+          <Button
+            onClick={() =>
+              sendMutation.mutate({
+                recipientType: 'PROJECT_TEAM',
+                recipientFilter: { projectId },
+                subject,
+                body,
+                deliveryChannels: ['EMAIL'],
+                linkType: 'NONE',
+              })
+            }
+            disabled={!canSend || sendMutation.isPending}
+          >
+            <Send className="mr-2 h-4 w-4" />
+            {sendMutation.isPending ? 'Sending…' : `Send to ${recipientCount}`}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}

src/server/routers/message.ts

@@ -14,7 +14,7 @@ export const messageRouter = router({
   send: adminProcedure
     .input(
       z.object({
-        recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'ALL']),
+        recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'PROJECT_TEAM', 'ALL']),
         recipientFilter: z.any().optional(),
         roundId: z.string().optional(),
         roundIds: z.array(z.string()).optional(),
@@ -482,7 +482,7 @@ export const messageRouter = router({
    */
   previewRecipients: adminProcedure
     .input(z.object({
-      recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'ALL']),
+      recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'PROJECT_TEAM', 'ALL']),
       recipientFilter: z.any().optional(),
       roundId: z.string().optional(),
       roundIds: z.array(z.string()).optional(),
@@ -556,7 +556,7 @@ export const messageRouter = router({
    */
   listRecipientDetails: adminProcedure
     .input(z.object({
-      recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'ALL']),
+      recipientType: z.enum(['USER', 'ROLE', 'ROUND_JURY', 'ROUND_APPLICANTS', 'PROGRAM_TEAM', 'PROJECT_TEAM', 'ALL']),
       recipientFilter: z.any().optional(),
       roundId: z.string().optional(),
       roundIds: z.array(z.string()).optional(),
@@ -839,6 +839,25 @@ async function resolveRecipients(
       return [...ids]
     }
 
+    case 'PROJECT_TEAM': {
+      const projectId = filter?.projectId as string
+      if (!projectId) return []
+      const [teamMembers, project] = await Promise.all([
+        prisma.teamMember.findMany({
+          where: { projectId },
+          select: { userId: true },
+        }),
+        prisma.project.findUnique({
+          where: { id: projectId },
+          select: { submittedByUserId: true },
+        }),
+      ])
+      const ids = new Set<string>()
+      for (const tm of teamMembers) ids.add(tm.userId)
+      if (project?.submittedByUserId) ids.add(project.submittedByUserId)
+      return [...ids]
+    }
+
     case 'ALL': {
       const users = await prisma.user.findMany({
         where: { status: 'ACTIVE' },

tests/unit/message-recipient-project-team.test.ts

@@ -0,0 +1,60 @@
+import { afterAll, beforeAll, describe, expect, it } from 'vitest'
+import { prisma, createCaller } from '../setup'
+import {
+  createTestUser, createTestProgram, createTestProject, cleanupTestData, uid,
+} from '../helpers'
+import { messageRouter } from '../../src/server/routers/message'
+
+describe('message.previewRecipients — PROJECT_TEAM', () => {
+  let programId: string
+  let admin: { id: string; email: string; role: 'SUPER_ADMIN' }
+  let projectId: string
+  const userIds: string[] = []
+
+  beforeAll(async () => {
+    const program = await createTestProgram({ name: `proj-team-${uid()}` })
+    programId = program.id
+
+    const lead = await createTestUser('APPLICANT')
+    userIds.push(lead.id)
+    const project = await createTestProject(programId, { title: 'TestProj' })
+    projectId = project.id
+    await prisma.project.update({ where: { id: projectId }, data: { submittedByUserId: lead.id } })
+
+    const member1 = await createTestUser('APPLICANT')
+    const member2 = await createTestUser('APPLICANT')
+    userIds.push(member1.id, member2.id)
+    await prisma.teamMember.createMany({
+      data: [
+        { id: uid('tm'), projectId, userId: member1.id, role: 'MEMBER' },
+        { id: uid('tm'), projectId, userId: member2.id, role: 'MEMBER' },
+      ],
+    })
+
+    const a = await createTestUser('SUPER_ADMIN')
+    userIds.push(a.id)
+    admin = { id: a.id, email: a.email, role: 'SUPER_ADMIN' }
+  })
+
+  afterAll(async () => {
+    await cleanupTestData(programId, userIds)
+  })
+
+  it('counts the lead + 2 team members', async () => {
+    const caller = createCaller(messageRouter, admin)
+    const result = await caller.previewRecipients({
+      recipientType: 'PROJECT_TEAM',
+      recipientFilter: { projectId },
+    })
+    expect(result.totalApplicants).toBe(3)
+  })
+
+  it('returns 0 when projectId is missing', async () => {
+    const caller = createCaller(messageRouter, admin)
+    const result = await caller.previewRecipients({
+      recipientType: 'PROJECT_TEAM',
+      recipientFilter: {},
+    })
+    expect(result.totalApplicants).toBe(0)
+  })
+})