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.
Closes six verified gaps from the 2026-05-17 TS-vs-Rust gap analysis,
each build- and test-green:
- editor: SetNodeFlip + SetEllipseArc commands (+ set_node_flip /
set_ellipse_arc MCP tools) — schema already had the fields, only
the command path was missing.
- export: export_node_raster crops a raster to one node's bbox;
File -> Export is now selection-aware (single selection -> layer).
- editor: SVG import — hand-rolled parser (shapes + path M/L/H/V/
C/S/Q/T/Z) in svg_import.rs; cubic curves flatten to dense straight
anchors at import time so the renderer/pen-tool stay on their 1:1
straight-segment model. + EditorCommand::ImportSvg + import_svg tool.
- mcp: HTTP transport — mcp_serve::run_http serves MCP over a
TcpListener (--mcp-http <port> <path>); process_message is shared
with the stdio path.
- cli: new op-cli crate (binary `op`) — a dependency-free HTTP MCP
client driving every tool via `op <tool> key=value...`.
- ai: ChatRequest gains thinking/effort fields (ThinkingMode /
EffortLevel, defaults Adaptive/Low to match the TS runtime config).
MCP tool catalog 77 -> 80. Oversized files split to honour the
800-line cap (svg_import, export, mcp_serve, adapter).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Relocate the AI chat layer (chat_provider.rs, chat_models.rs,
agent_settings_state.rs) out of openpencil-shell-core into a dedicated
op-ai crate. These three modules are dependency-free transport-free
data shapes — the ChatProvider trait, the ModelEntry catalog type, and
the Cmd+, settings-modal state — so they form a clean wasm32-clean
leaf crate. A fresh lib.rs declares all three as modules; chat_models'
`crate::agent_settings_state::` path stays valid. openpencil-desktop's
chat_*.rs transports + model_discovery.rs now import `op_ai::*`. Pure
relocation, no behaviour change.
