- Added `is_implementation_authorizer` check requiring OWNER or allowlisted maintainer to authorize implementation work.
- Blocked `gh_push_branch` and `gh_open_pr` for unclassified/enhancement/proposal issues without explicit directive authorization.
- Auto-allowed bug and documentation issues without requiring a directive.
- Propagated `authorizes_impl` flag through events, server, tasks, and worker bindings.
parse_issue_ref now accepts owner/repo#NN or a github issue url (with or without scheme, www., trailing slash, query, fragment). The dashboard trigger, CLI, and replay endpoint pick this up automatically; UI hints updated to match.
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