fix: v0.4.2 — inspect_image used wrong DSM parameter contract

Live DSM API capture revealed the actual SYNO.Docker.Image/get
contract: a single JSON-encoded parameter named `identity` that
accepts both `name:tag` and `sha256:<hash>` forms. The 0.4.0 code
passed `name` + `tag` + `id` and was rejected by DSM with error 114.

Response shape also corrected — the endpoint returns flat top-level
fields (image, tag, id, digest, size, virtual_size, author,
docker_version, cmd, entrypoint, env, ports, volumes), NOT the
Docker-engine inspect shape with details.Config.* + RootFS.Layers
that the previous implementation assumed. Layer rendering removed;
digest / author / docker_version / volumes are now displayed.

Pre-resolution against list_images is no longer needed — the user
input goes straight into `identity` JSON-encoded.

Closes #4.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mcp-synology-container"
-version = "0.4.1"
+version = "0.4.2"
 description = "MCP server for Synology Container Manager"
 requires-python = ">=3.12"
 dependencies = [