feat: v0.2.5 — redeploy via build_stream (proper DSM image pull)

Replace the delete-before-start workaround with the real mechanism:
SYNO.Docker.Project/build_stream is what the DSM "Erstellen" button calls
(confirmed via DevTools). It pulls updated images and starts the project.

DsmClient.trigger_build_stream(project_id): fires a streaming GET to
build_stream, reads the first SSE chunk to confirm DSM accepted the
request, then closes. ReadTimeout is swallowed (build running server-side).
Immediate JSON error responses are parsed and raised as SynologyError.

redeploy_project simplified from 4 steps to 3:
  1. Stop (skip for STOPPED, suppress for BUILD_FAILED)
  2. trigger_build_stream — DSM pulls images + starts project
  3. Poll for RUNNING (timeout raised from 30s → 5min for large pulls)
build_stream errors are now fatal (abort with clear message).

Removes _read_compose_images_for_project, _try_delete_image and their
json/yaml/re imports — no longer needed.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mcp-synology-container"
-version = "0.2.4"
+version = "0.2.5"
 description = "MCP server for Synology Container Manager"
 requires-python = ">=3.12"
 dependencies = [