Merge pull request #1029 from obra/readme-release-announcements

Add detailed Discord description to Community section

Add release announcements link, consolidate Community section

Add agent-facing guardrails to contributor guidelines

Add contributor guidelines to reduce agentic slop PRs

Release v5.0.7: Copilot CLI support, OpenCode fixes

docs: update release notes with OpenCode bootstrap change

fix(opencode): inject bootstrap as user message instead of system message

docs: add OpenCode path fix to release notes

fix(opencode): align skills path across bootstrap, runtime, and tests

feat: add Copilot CLI tool mapping, docs, and install instructions

fix: add Copilot CLI platform detection for sessionStart context injection

Release v5.0.6: inline self-review, brainstorm server restructure, owner-PID fixes

Fix owner-PID lifecycle monitoring for cross-platform reliability

Fix owner-PID false positive when owner runs as different user