ChatRequest gains an attachments field; ChatState carries a per-turn
thinking mode, effort level and staged attachments (capped at 4 files /
5 MiB, attachment-only sends allowed). The chat panel grows a controls
row (thinking / effort / attach) and a dedicated attachment-chip row,
with hit-test and paint sharing one input-block origin.
All five providers consume the knobs — Claude maps thinking onto the
SDK token budget, Copilot onto reasoning_effort, the CLI / built-in
transports prepend an in-band directive, the HTTP transport adds body
fields; attachments spill to a private per-turn temp dir (cleaned on
drop) or inline base64. Also wires op-ai-skills into the built-in
provider and op-acp in as the AcpProvider chat backend.
Phase 7.3 strangler reorg — the final consumer (op-pen-loader) is
repointed off the openpencil-shell-core shim onto op-editor-ui (the
real source crate for the layout scene / scene-var / render-backend
facade), then the shim crate is deleted.
- op-pen-loader: openpencil-shell-core dep -> op-editor-ui;
every openpencil_shell_core:: path -> op_editor_ui::
- git rm crates/openpencil-shell-core/ (lib + jian.rs module + the
two re-export anchor tests, all superseded by op-editor-ui's own
surface; the jian.rs module had no consumers outside the shim)
- stale shell-core / shell-native comment refs in op-editor-core +
op-host-desktop manifests updated
