Existing gitea research docs were 100% code-derived from gitea-mcp
source with zero external content (the original docs.gitea.com fetch
timed out and was never retried). Adds workflow-conventions.md sourced
from context7 /websites/gitea and /git_gitea_com/gitea_tea: scoped/
exclusive label conventions, PR review/branch-protection rules,
release/tag semver conventions, and automatic issue/PR cross-reference
linking (validates the dependency-linking convention for issue #6).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>