Claude Code skills, rules, and language bundles https://git.cjennings.net/rulesets/atom?h=main 2026-07-30T12:42:47+00:00 2026-07-30T12:42:47+00:00 Craig Jennings c@cjennings.net 2026-07-30T12:42:47+00:00 urn:sha1:84bd121683add4440a3652b12b70e6e2d45f5384 A helper is a second agent session in a project that already has a live one. It reads freely, makes only scoped single-heading edits, and never touches git. Until now the only way to get one was to tell a session by hand it was a helper, and nothing checked whether that was true. --helper runs agent-roster first, so the claim gets verified rather than asserted. It opens its own tmux window and hands the session helper-mode.org instead of the normal startup workflow. Git prep is skipped because pulls belong to the primary. With no other agent live it warns and falls back to a primary launch. When the roster can't answer, it opens a helper anyway. I picked that direction because a helper that turns out to be alone merely does less, while a primary that turns out not to be alone runs pulls and rsync underneath a live session. Wrap-up gains a Step 0 branch. A helper archives its own context file and stops, and the primary's next commit carries its edits. An orphaned helper whose primary already exited runs the full wrap, because otherwise its edits strand as a dirty tree nobody owns. That branch resolves the project root before consulting the roster. agent-roster defaults to $PWD and only matches agents at or inside it, so a call from a subdirectory would miss a primary at the root and report the helper orphaned. That is the one path that commits and pushes. The agent id is sanitized to the charset session-context-path keeps, because it's interpolated into the command typed into the pane. A helper launching a helper gets a fresh id rather than inheriting its parent's. Two agents resolving to one context file is the collision the contract exists to prevent. Startup still has no roster check, so a bare claude launched into a busy project runs full primary startup regardless. helper-mode.org and protocols.org now say so instead of listing the routing as though it works.