M13: Veilige Claude-agent-workflow (Scrum4Me-side) (#26)

* feat: add pushed_at field to ClaudeJob schema

Nullable DateTime column to record when the agent's feature branch was
pushed to origin. Enables the UI to show a 'pushed' state independently
of DONE status.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: GitHub-link op DONE-card + pushed_at doorvoer

- lib/job-status-url.ts: getBranchUrl(repoUrl, branch) → GitHub tree URL
- JobState + ClaudeJobEvent: pushed_at? veld toegevoegd
- realtime/solo/route.ts: pushed_at in Prisma-select, JobPayload en mapping
- SoloBoardProps + TaskDetailDialog: repoUrl prop doorgevoerd
- task-detail-dialog: "Open op GitHub"-link als done + pushed_at + branch + repoUrl
- 3 unit-tests voor getBranchUrl; totaal 261 tests groen

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: add VerifyResult enum, verify_only on Task, verify_result on ClaudeJob

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: add verify_result+pushed_at to JobState, VerifyResultApi type, SSE payload

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: verify_only field on SoloTask, PATCH route saves verify_only

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat: TaskDetailDialog — verify_result display + verify_only checkbox

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* test: verify_only PATCH + verify_result dialog render + store fix

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* docs: document VerifyResult enum, verify_only task field, pushed_at in architecture

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat(M13): cron /api/cron/cleanup-agent-artifacts — hard-delete FAILED/CANCELLED jobs >7 days

* feat(M13): add auto_pr field to Product schema + migration

* feat(M13): auto_pr toggle in product settings — server action + UI component + tests

* feat(M13): add pr_url to ClaudeJob schema + migration

* feat(M13): UI — 'Open PR' link on DONE-card; pr_url in JobState + SSE + task-dialog

* feat(M13): add retry_count migration + regen erd

- Migration ALTER TABLE claude_jobs ADD COLUMN retry_count INT DEFAULT 0
  (schema.prisma was reeds bijgewerkt in eerdere commits)
- docs/erd.svg geregenereerd voor de complete M13-schema-wijzigingen
  (verify_result, verify_only, pushed_at, pr_url, auto_pr, retry_count)

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

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

prisma/schema.prisma

@@ -38,6 +38,13 @@ enum ClaudeJobStatus {
   CANCELLED
 }
 
+enum VerifyResult {
+  ALIGNED
+  PARTIAL
+  EMPTY
+  DIVERGENT
+}
+
 enum TaskStatus {
   TO_DO
   IN_PROGRESS
@@ -124,6 +131,7 @@ model Product {
   description        String?
   repo_url           String?
   definition_of_done String
+  auto_pr            Boolean         @default(false)
   archived           Boolean         @default(false)
   created_at         DateTime        @default(now())
   updated_at         DateTime        @updatedAt
@@ -236,6 +244,7 @@ model Task {
   priority            Int
   sort_order          Float
   status              TaskStatus @default(TO_DO)
+  verify_only         Boolean    @default(false)
   created_at          DateTime   @default(now())
   updated_at          DateTime   @updatedAt
   claude_questions    ClaudeQuestion[]
@@ -261,10 +270,13 @@ model ClaudeJob {
   started_at          DateTime?
   finished_at         DateTime?
   pushed_at           DateTime?
+  verify_result       VerifyResult?
   plan_snapshot       String?
   branch              String?
+  pr_url              String?
   summary             String?
   error               String?
+  retry_count         Int             @default(0)
   created_at          DateTime        @default(now())
   updated_at          DateTime        @updatedAt