docs: update ROADMAP-RELEASES.md to reflect v4.0.1 deliverables

[aselim31]

Summary

Updates docs/ROADMAP-RELEASES.md to reflect what was delivered in v4.0.1 and adds new Mothership & Fleet issues to R1.

Changes

Delivery history section added

• v4.0.0: June 4, 2026
• v4.0.1: July 3, 2026 (41 issues)

R1 Stabilization — 8 of 10 closed in v4.0.1

• Closed: Orphan worktree partial setup corrupts filesystem on retry #537, Non-atomic task claim causes duplicate worktree creation under concurrency #536, Output delta validation fails on resume-after-approval when artifact already exists #518, interview-answers.json causes squash-merge conflicts when parallel tasks run #516, Products page does not show task artifacts before approval — reviewers see empty page #519, CI: Bump & Release workflow fails — protected branch blocks direct push to main #393, Cannot find Claude and Git #504, Manage Dotbot Versioning #511
• Remaining: Preflight: Content-Aware Checks + Custom / LLM-Driven Scripts #509, Update README docs: single-session task lifecycle (two-phase model removed in v4) #458

R1 Enterprise — 2 of 5 closed in v4.0.1

• Closed: Expand QuestionService — artifact approvals, roles, and new question types #29, Jira as an approval channel #30
• Remaining: Event bus for inter-system communication (v4 phase 04) #93, Q&A: web delivery provider, channel preferences & fallback ordering #545, Project team and roles (v4 phase 14) #98

R1 Mothership & Fleet — 3 new issues added

• Drone credential store — secure credentials_ref resolution for repo cloning #574 Drone credential store
• Outpost-to-Drone task delegation: outpost-side command to submit work to the drone fleet #575 Outpost-to-Drone task delegation
• Mothership deployment & setup: Docker image, CLI command, env reference & setup guide #576 Mothership deployment & setup

R2 Workflow Builder — #522 removed

• Delivered as Support extends: in workflow.yaml — workflow inheritance, parity with stacks #427 (workflow extends:) in v4.0.1

Issue counts updated throughout

Last updated date: 2026-07-03

Related

Closes #582

Checklist

• Closed issues marked in collapsible sections
• New Mothership issues added to R1
• Dependency chain updated
• All-issues table updated
• Reviewer sign-off