* feat(terminals): expose workspace ownership through the SDK and CLI
Directory-based terminal creation selected the oldest workspace sharing that path. Expose explicit workspace ownership in the shared public API and CLI, retain ownership and process directories in listings, and acknowledge terminal deletion after teardown.
* fix(file-observer): preserve nested shallow reconciliation scopes
A parent directory scan does not visit its descendants. Collapsing change scopes discarded nested scans and left coalesced native deletions unseen until a full audit.
* test(terminals): extract output waits from end-to-end scenarios
Allow trusted local plugins to register complete coding-agent providers through the existing agent lifecycle. Includes direct and ACP implementations, SVG provider icons, custom timeline items, runnable examples, and public authoring documentation.
Closes#3547Closes#3556
Keep stable v0.7 guidance available while the client-entry layout is previewed for v0.8. Existing reference and migration URLs redirect to the release that owns their content.