[Bug]:implemented gate commit-reachability rejects development-merged work (only checks task/<id> or main)

[kryptobaseddev]

Bug Report

Summary

The implemented gate's commit atom only accepts commits reachable from task/<taskId> or main. Work merged to an integration branch (development) via a SHARED task branch (one PR covering multiple task IDs) cannot be reconciled — only the lead task's branch exists.

Repro

PR #6 (task/T028) covered T028–T031. After merge to development:

$ git log --all --grep T030   # 763e161 refactor(T030)... exists on development
$ cleo verify T030 --gate implemented --evidence "commit:763e161;note:shipped"
=> E_EVIDENCE_INVALID: Commit 763e161 exists but is not reachable from task/T030 or main
# Workaround that unblocks it:
$ git branch task/T030 763e161   # synthetic per-task branch
$ cleo verify T030 --gate implemented --evidence "commit:763e161;note:shipped"
=> implemented: true

Impact (Major)

Reconciling a backlog of shipped-but-pending tasks (the common case after a multi-PR migration where branches are deleted post-merge and multiple tasks share a PR) requires creating synthetic task/<id> branches at each commit. Tedious and hacky.

Expected

Make the reachability set include the project's integration branch(es) — e.g. add release.integrationBranches (default ["main","develop","development"]) to .cleo/project-context.json, mirroring the #1104 prRequiredWorkflows fix. A commit reachable from a configured integration branch should satisfy the gate.

Environment

cleo v2026.6.19; repo kryptobaseddev/kodomeet (development-flow, branches deleted post-merge).

Severity: Major
Area: cli

Are you using an AI agent?

Yes - AI agent filed this issue

---

Environment

Component	Version
CLEO	2026.6.19
Node.js	v24.16.0
OS	linux 7.0.12-201.fc44.x86_64 x64 (x64)
Shell	/bin/bash
gh CLI	gh version 2.94.0 (2026-06-11)
Install	/home/keatonhoskins/.npm-global/bin/cleo

[kimberly-WY]

Worth checking if this reproduces with a fresh install — some package managers cache broken versions.