Upgrade OpenClaw to 2026.4.12

[github-actions]

Automated Upgrade: 2026.3.11 → 2026.4.12

Test Results

Test	Result
Docker image builds	✅
Version matches Dockerfile	✅
Config valid JSON + correct defaults	✅
Config owned by openclaw user	✅
Gateway process running	✅
Gateway HTTP responds 200	✅
Tailscale binary present	✅
Channel plugins loaded	✅
Backup config valid	✅
openclaw doctor completes	✅
App Platform E2E	✅ Passed

⚠️ Known Upstream Regressions

• #65794: [Bug]: Web Chat tool-call blocks truncate tool arguments / parameters

Review these before merging.

Release Notes

---

This is an automated version bump. Only the Dockerfile was changed.
If release notes mention config/schema changes, manual review is required.
Do not merge if there are known regressions above.

Docker test output

=== OpenClaw Upgrade Verification ===

Waiting for container openclaw-upgrade-test to be ready...
✓ Container is responsive (waiting for init to complete...)
✓ s6 init complete (crond up)
✓ Version: 2026.4.12
✓ Config is valid JSON
✓ tools.profile: coding
✓ Config owned by openclaw
✓ Auth mode: token
✓ Gateway process running
✓ Tailscale binary present
Waiting for gateway HTTP...
✓ Gateway HTTP: 200
✓ Config writable by openclaw user
✓ Channel plugins loaded: discord,signal,telegram,whatsapp
✓ Backup config (backup.yaml) is valid
✓ pnpm store excluded from backups
SKIP: Telegram channel probe (TELEGRAM_BOT_TOKEN not set)
✓ openclaw doctor completes

=== Upgrade Verification Results ===
  Passed:   13
  Failed:   0
  Warnings: 0

=== All upgrade verification tests passed ✅ ===