ARO 0.11.1

[KrisSimon]

ARO 0.11.1

A focused follow-up to 0.11.0. The headline user-facing change is a new trim operation for stripping whitespace — available everywhere the string ops live (Compute, qualifiers, and templates). Under the hood, the MCP server got a substantial hardening pass, the SOLARO AI co-pilot now edits your live editor buffer instead of clobbering it through disk, and the training pipeline learned to actually train on tool-use conversations.

trim — strip leading and trailing whitespace (#…)

trim joins uppercase / lowercase as a first-class string operation, wired through all three surfaces that share the string ops:

Compute the <clean: trim> from <raw-input>.

• Compute: Compute the <clean: trim> from <text>.
• Qualifier: <value: trim> in any read position.
• Templates: {{ value | trim }} in the template engine.

Strips leading and trailing whitespace and newlines; non-string inputs are stringified first, matching the other string ops.

MCP server hardening

aro mcp got a correctness and robustness pass across the protocol, tool execution, and resource layers.

Protocol / JSON-RPC

• Returns real JSON-RPC errors — method-not-found (-32601), invalid-params (-32602), resource-not-found (-32002) — instead of burying failures inside a success result, and preserves the request id on every error path.
• initialize now negotiates protocolVersion: it echoes the client's requested version when supported, else falls back to ours.
• StdioTransport no longer treats a blank input line as EOF — a stray newline previously shut the whole server down.

Tool execution (aro_run / aro_compile)

• Timeout is clamped to [1, 600]; a negative timeout previously trapped on UInt64 conversion and crashed the server.
• stdout/stderr are drained concurrently before waiting, so a child emitting more than the pipe buffer can't deadlock; partial output is captured on kill.
• Invokes the running executable (Bundle.main) instead of /usr/bin/env aro, so run/compile work under minimal-PATH launchers (e.g. Claude Desktop).
• Timeouts are reported distinctly (SIGTERM → SIGKILL escalation), and returned output is capped at 64 KB per stream.

Resources

• Rejects .. in resource URIs and confirms resolved paths stay within the base directory — a path-traversal guard.

The aro mcp help now lists all 8 tools.

SOLARO co-pilot — live-buffer edits + project context

The co-pilot's file writes previously went to disk and triggered a whole-file reload that wiped the editor undo stack and could clobber concurrent typing. It also had no project awareness and only saw the open file via disk.

• Edits to the open document are now routed into the live editor buffer via optional host hooks (liveText / applyEdit / applyWrite), falling back to a disk write only when the file isn't open or the match isn't unique. AROCodeEditor applies them through an undoable STTextView.replaceCharacters, preserving undo and the caret.
• The model now sees unsaved edits — focusFileMessage prefers the live editor buffer over disk.
• A new OPEN PROJECT context block (source-file list) gives the model project awareness, gated so only editor embedders get it, not the plain CLI.

Training pipeline

• Tool-use conversations now reach fine-tuning. The dataset assembler dropped every multi-turn messages[] tool-use trace as "empty" (it required both instruction and output), so no tool-calling conversation ever reached the trainer. Those traces are now carried through as tool_calling, unblocking the fix-chain / failure-recovery / open-file traces too.
• 11_function_calling adds 14 multi-turn read → analyse → check traces exercising every tool, with a coverage guard that fails the notebook if any core tool lacks a multi-turn trace.
• META_PIPELINE: warm-start fine-tune timeout removed (a ~4h35m LoRA run was being killed at the old 4h cap before checkpoint selection), headless-safe progress display, per-notebook done/failed/skipped tally, and --from NN resume.

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Full diff: 0.11.0...0.11.1