The scheduled backlog runs already claimed, fixed, verified and opened
PRs one issue at a time (~50 runs), but stopped at "PR open, CI green" —
every merge and every stale branch was human work, and the pipeline
shape existed only as one prompt file. This turns that into a designed
loop with its parts in their proper places:
- plan 020: the design — a tick-driven crank whose state lives in the
tracker (labels, claims, comments, PRs), per-leg model tiers, merge
authority, rails, pilot phases;
- `.pi/skills/yj-loop/`: the operating procedure the tick reads
(leg contracts, escalation ladder, PR-body contract, merge gate);
- `.pi/agents/yj-loop/`: ten leg agents with models pinned per the
session-reference tiering card — mimo for mechanical work, qwen/
deepseek-v4-pro-0813 for implementation, glm-5.3 for selection,
planning and consequences review, glm-5.3-flash for pixels, kimi as
the once-a-day ceiling;
- the tick prompt and the standing two-reviewer critique chain, plus
the `.pi/loop/` gitignore entry and the CLAUDE.md pointer.
The switch stays where the v0's was — `.pi/schedule-prompts.json`,
gitignored, live only while the loop's pi session is open. No code
changes. Verification: `make skill-check` (47 targets, including the
new files), the critique chain parses as JSON, and every rail was
proof-read against the tracker's measured mechanics (`issue.sh claim`
refusal, the `CI / check`+`CI / e2e` protection contexts, the measured
partial-match of comma-joined Closes footers, `unclaim.yml`).
Closes#236
logan