Why: Tool calls stayed invisible until execution finished, and turn, tool, timeout, and output caps stopped long tasks early.
Evidence: go test ./internal/runtime/ ./internal/tools/ ./internal/prompts/ ./internal/squadadapter/ ./internal/runmgr/ ./internal/app/ ./internal/settings/
Impact: tool.call.delta and tool.output reach the client; default profile, subagents, and squad no longer cap turns or tool calls; exec timeout defaults to 600s with no hard ceiling. A profile or subagent maxTurns above 0 still applies.
Refs: feature/stream-display-overhaul
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: Plugin scripts and model-written scripts need the same step runner, without giving the script a way to call interpreters or start another workflow.
Evidence: go test ./... passed. Callbacks, denied tools, the 50-call cap, a 1MB line, and cancel-kills-the-process are covered. A model script does not run until the switch is on and the user confirms.
Impact: runtime.workflowScripts stays off by default. Plugin script bodies are copied into the launch. Squad entry still has no run_workflow.
Refs: feature/agent-harness-p4
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: Generated files kept Word's default theme, US Letter pages,
hand-typed bullets and empty sections. Recipes only showed library
calls, the prompt had no craft standard, and seeded skills could not
be upgraded once written.
Evidence: go test ./... passed. The house-style suite covers three
themes across docx, pptx and xlsx, and rejects a document that repeats
the diagnosed layout failures. lint on the sample minutes exits 1.
Impact: Every run gets a resident quality standard. Office files use
house-style (switchable themes, templates, imitation) and must pass
lint. Skill seeding upgrades untouched builtins and keeps user edits.
Uploads land in inputs/, and the default style is a setting.
Refs: feature/agent-professional-deliverables
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: the full-agent batch (Agent-Native PR #3, Agent-Squad PR #3) made
roles capable of declaring model/tools/skills/bash execution, but the
product composition root had no path to register the kernel backend or
inject search/exec/skills config.
Evidence: go vet ./... clean; go test ./... 19 packages ok. New cases:
buildBackends registers agent-native only when composition-root options
are enabled (default backend stays agent-system, per the parity
progressive-enablement clause) and resolves explicit
Backend:agent-native roles; InterpreterExecConfigForKernel validates
absolute interpreter paths and the env whitelist reused from the
product exec tools.
Impact: deps/agent-native pinned to f9ab2ef and deps/agent-squad to
9a402e4; app.go resolves settings.models.chat, tools.tavily.*,
runtime.exec, and <data>/skills into squad.AgentNativeConfig per run;
squadadapter exposes the AgentNativeOptions hook and buildBackends.
Refs: Dev task feature/full-agent-r1 batch B10.
Why: deliverable prompts already tell the model to generate Office files
with run_python and register them, but the executors were never
registered, so calls missed the registry and fell back to text-only
write_artifact.
Evidence: go test ./... — 19 packages ok, including echo/script-retention,
empty-script and runtime.exec gate, process-group timeout, python ZIP
magic, and ExecuteTool backfill of register_artifact after run_python.
Scripts stay under the session .agent/ directory; bash/python3 are
resolved to absolute paths; timeout kills the process group.
Impact: models can execute workspace scripts and register binary
deliverables. runtime.exec=false still fail-closes the whole family.
Office extensions now get real MIME types so binary bytes are not
indexed as text.
Refs: task feature/exec-interpreters
Co-authored-by: Cursor <cursoragent@cursor.com>
weichenandCursor