docs: add beta-release draft PR summary

docs/beta_release_draft_pr.md

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+# Beta Release Draft Pull Request
+
+## Overview
+This draft PR merges recent beta preparation changes from `feature/beta-release` into `feature/alpha-completion` to align the alpha integration branch with the latest CI, workflow, and release process improvements.
+
+## Changes Included
+1. Workflow Token Updates
+   - Replaced deprecated `GITHUB_TOKEN` usage with `PROJECT_TOKEN` per new GitHub token naming restrictions.
+   - Ensured consistent secret reference across `release.yml` and `renovate_prune.yml`.
+2. Release Workflow Adjustments
+   - Fixed environment variable configuration for release publication.
+   - Maintained prerelease logic for alpha/beta/rc tags.
+3. CI Stability Improvements
+   - Prior earlier commits (already merged previously) included action version pinning for reproducibility and security.
+4. Docker Build Reliability
+   - (Previously merged) Improvements to locate and package the `dlv` binary reliably in multi-arch builds.
+
+## Commits Ahead of `feature/alpha-completion`
+- 6c8ba7b fix: replace GITHUB_TOKEN with PROJECT_TOKEN in workflows
+- de1160a fix: revert to PROJECT_TOKEN
+- 7aee12b fix: use GITHUB_TOKEN in release workflow
+
+## Follow-ups (Not in This PR)
+- Frontend test coverage enhancement for `ProxyHostForm` (in progress separately).
+- Additional beta feature hardening tasks (observability, import validations) will come later.
+
+## Verification Checklist
+- [x] Workflows pass YAML lint locally (pre-commit success)
+- [x] No removed secrets; only name substitutions
+- [ ] CI run on draft PR (expected)
+
+## Request
+Marking this as a DRAFT to allow review of token changes before merge. Please:
+- Confirm `PROJECT_TOKEN` exists in repo secrets.
+- Review for any missed workflow references.
+
+---
+Generated by automated assistant for alignment between branches.