feat: ✨ add 14 MCP tools for Forgejo releases and release attachments
Implements openspec change add-releases-support (forgejo-mcp-0ep).
- operation/release/: 8 release tools (list/get/create/edit/delete,
state filter, by-tag variants) + 6 attachment tools (list/get/
download/create/edit/delete), wired in operation.go + cmd/cli.go
- State filter (all|draft|prerelease|published) applied client-side;
list_release_attachments sliced client-side (no SDK pagination)
- download_release_attachment reuses MaxInlineDownloadBytes cap and
BlobResourceContents inline shape from the issue/comment domains
- 19 unit tests covering pagination, state guard, partial-edit PATCH,
base64 decode guard, client-side slice boundaries, over/at-cap download
- params: ReleaseID/Tag/TagName/TargetCommitish/Draft/Prerelease/State
- README tools table + DEVELOPER.md domain list updated
- demos/release-management.md: read-only walkthrough with real
Codeberg output; write-tool surface; autonomous release-notes workflow
a41115b9bb