linear-sync

name	linear-sync
description	Syncs plan progress to a linked Linear Issue. Posts plan contents, progress updates, branch links, and PR links at key milestones. Use this skill throughout the plan lifecycle to keep Linear Issues in sync. The Linear counterpart of lisa:jira-sync and lisa:github-sync.
allowed-tools	["Bash","Skill","mcp__linear-server__list_teams","mcp__linear-server__get_issue","mcp__linear-server__list_issues","mcp__linear-server__save_comment","mcp__linear-server__list_issue_labels","mcp__linear-server__create_issue_label","mcp__linear-server__save_issue"]

Sync Plan to Linear: $ARGUMENTS

Post milestone updates to the linked Linear Issue at key plan-lifecycle moments. This skill is the destination of the lisa:tracker-sync shim when tracker = "linear".

Configuration

Reads linear.workspace, linear.teamKey from .lisa.config.json (with .local override).

When to invoke

Callers (planning skills, lifecycle skills) invoke this skill at:

Milestone	What to post
Plan created	Plan contents (sections + ordered tasks) as a comment, suggest transition Backlog → Todo (label: status:ready)
Implementation in progress	Branch URL + first commit, suggest transition Todo → In Progress (label: status:in-progress)
PR ready for review	PR URL + summary, the implementation handoff comment, suggest transition In Progress → In Review (label: status:code-review)
PR merged	Merge SHA + deploy environment (if known), suggest transition In Review → Done (label: status:done)

This skill suggests transitions but does not auto-transition the native Linear state field. It DOES update the status:* label set when the caller asks (the build queue is keyed off labels). Native state transitions remain a human / triage decision.

Input

$ARGUMENTS is <IDENTIFIER> <milestone> where:

• <IDENTIFIER> is the Linear Issue identifier (e.g. ENG-123). If not provided, the skill searches the active plan file for a linked Linear Issue.
• <milestone> is one of plan-created, implementation-in-progress, pr-ready, pr-merged.
• Optional tokens include pr_url=<url> for the live pull request and merge_sha=<sha> once merged.

Phase 1 — Resolve Issue

1. If $ARGUMENTS includes an identifier, parse it.
2. Else search for the active plan file (most recent file under plans/) and extract the linked Linear Issue identifier from its frontmatter.
3. Fetch the Issue via mcp__linear-server__get_issue to confirm it exists.

Phase 2 — Compose Milestone Comment

Per the milestone, build the comment body. Include:

• A milestone header (e.g. **Plan created** — <plan-file>)
• Relevant links (plan file, branch, PR)
• A short summary (first 5 lines of the plan section / commit message / PR description)
• The suggested status transition

Example for plan-created:

**Plan created** — `plans/feat-X.md`

Sections:
- Phase 1: Schema doc
- Phase 2: Linear destination skills
- ...

Tasks: 7 ordered items.

Next: implementation begins. Suggested status: **Todo** (label: `status:ready`).

Phase 3 — Post Comment

Call mcp__linear-server__save_comment({issueId: <id>, body: <comment>}).

Phase 3b — Ensure PR Backlink

When $ARGUMENTS includes pr_url=<url> for pr-ready or pr-merged, ensure the Linear Issue has a durable ticket -> PR link:

1. Prefer Linear's native GitHub attachment / pull request link when the integration has attached the PR through the branch name, PR title, or PR body issue identifier. Verify by re-reading the Issue and its attachments / relations where the Linear access layer exposes them.
2. If native linkage is unavailable, unconfigured, cross-system, or cannot be verified, create or update a single managed Linear comment containing the PR URL. The comment must start with [lisa-pr-link] and include the milestone (pr-ready or pr-merged) and merge SHA when available.
3. Keep the fallback idempotent: read existing comments where the access layer exposes them, find the [lisa-pr-link] comment for the same PR URL, and update/skip it instead of appending duplicates. If comment update is unavailable, skip when an identical managed comment already exists and otherwise add exactly one replacement comment with the stable marker.

The PR branch/title/body identifier is the PR -> Linear side. This phase is the required Linear -> PR side.

Phase 4 — Update Status Label (when caller requests)

If the caller passes --update-label, update the status:* label set via mcp__linear-server__save_issue:

• plan-created → add status:ready
• implementation-in-progress → remove status:ready, add status:in-progress
• pr-ready → remove status:in-progress, add status:code-review
• pr-merged → remove status:code-review, add status:done

If the requested label doesn't exist on the team, create it via mcp__linear-server__create_issue_label.

Verify exactly one status:* label remains after the update — having two simultaneously breaks the build-queue invariant.

Without --update-label, this skill posts the comment only and does NOT touch labels.

Phase 5 — Parent Status Rollup (--rollup)

When the caller passes --rollup, this skill derives a parent/container's status:* label from the roll-up of its children instead of acting on a leaf. A Project (the Epic equivalent) rolls up from its Issues; an Issue rolls up from its sub-Issues. This implements the Linear child-issue-status arm of the Parent status rollup (the state machine) section of the leaf-only-lifecycle rule — cite that rule, do not restate the policy.

Resolve the child set the same way lisa:linear-read-issue does — mcp__linear-server__list_issues({project: <id>}) for a Project's Issues, or mcp__linear-server__get_issue per child for an Issue's sub-Issues (via parentId). Capture each child's status:* label. If the item has no children it is a leaf — rollup is N/A; behave as a normal milestone sync.

Evaluate the required children over the env ladder in-progress < dev < staging < production (the ordered keys of the Linear env-keyed done map, e.g. status:on-dev < status:on-stg < status:done) and take the first match (canonical roles from config-resolution; Linear label map is status:blocked, status:in-progress, status:code-review, env-keyed done):

If among the required child leaves…	Derived parent role	Linear label
any child carries status:blocked	blocked	status:blocked
else every required child has shipped to some env (each at a done-map label, e.g. status:on-dev/status:on-stg/status:done)	done[min-env]	the least-advanced env label among them (all status:on-stg → status:on-stg; mixed dev+staging → status:on-dev; all production → status:done)
else any child has started (status:in-progress / status:code-review, or shipped to an env while a sibling has not)	claimed	status:in-progress
else (children exist, none started)	—	unchanged — parent keeps its non-ready container label

• Blocked dominates — one blocked child surfaces status:blocked on the parent even while siblings progress.
• Least-advanced env wins — the parent reaches an env only when every required child has reached at least that env; it never sits ahead of its laggard child. Native completion (moving the workflow state to Done) fires only when the resolved env is the production status:done, never at status:on-dev/status:on-stg.
• "Required" children only — won't-do / optional (e.g. Canceled) children do not hold the parent open.
• Recursive — a Project reaches an env only when its Issues have themselves rolled up to at least that env. Evaluate bottom-up.
• Never set the parent to status:ready — ready is leaf-only. Rollup only moves the parent between non-ready container labels.

Single-environment collapse (this repo). The env rungs resolve via the env-keyed done logic in config-resolution. In this repo deploy.branches declares only production: main, so done collapses to the single status:done label, the only env rung is production, and the lifecycle is status:ready → status:in-progress → status:code-review → status:done with no dev/staging promotion hops; the rollup never resolves a dev or staging done. Multi-environment projects keep the env-keyed map and roll a parent up to intermediate env labels (status:on-dev/status:on-stg).

Apply the derived label via mcp__linear-server__save_issue (Project or Issue), removing the parent's existing status:* and adding the derived one so exactly one status:* label remains. Post an idempotent rollup comment naming the derived state and the child tally. The native Linear state is not auto-transitioned — only the status:* label, mirroring the --update-label rule. Safe default: if the derived terminal cannot be resolved (ambiguous required-set or unresolvable env done), do not guess — post the derived suggestion as a comment and leave the parent's label untouched.

Rules

• Never auto-transition the native Linear state — only the label, and only when the caller explicitly asks (--update-label, or --rollup for parent derivation per the leaf-only-lifecycle rule).
• Rollup derives a parent's status:* label from its children and never sets a parent to status:ready. It cites the leaf-only-lifecycle rule by slug rather than restating the state machine.
• Never post empty or minimal comments — if a milestone has no meaningful content, skip the post.
• Do not delete prior milestone comments. They are the audit trail.
• If save_comment fails, retry once. If it fails again, surface the error.
• Pull request backlinks are mandatory when pr_url=<url> is present: native first, managed-comment fallback, never silently dropped.