# DEVX-176: CI hygiene — docs fast-path, failure-notify scoping, post-merge cancel

## Problem

devx CI has the same inefficiencies fixed in infra (OBL-INFRA-613/615/616):
docs-only PRs run the full quality suite (~10 min), CI failures auto-create
issues (noise — the user decided issues are for deploy failures only), and
post-merge `cancel-in-progress: true` can kill a release mid-publish.

## Approach

REQ-1: Docs-only PRs skip heavy validate steps (lint-all, unit tests,
test-speed, translation check, security scan, workflow dry-run). Docs gate,
spec validation, PR size, and auto-merge preconditions still run.
Restricted to pull_request events.

REQ-2: Remove the failure-issue step from `ci.yml` validate job.
Post-merge keeps failure notification (release/publish failures are
deploy-pipeline events).

REQ-3: post-merge `cancel-in-progress: false` — a new push queues instead
of killing an in-flight release/publish.

## Test Plan

- `make workflow-lint` passes.
- Docs-only PR: quality steps skipped, docs gate + spec + size + merge run.
- Non-docs PR: unchanged behavior.

## Deploy Plan

Workflow-only change; takes effect on merge. No release needed.

## Rollback Plan

Revert the commit.

## Acceptance Criteria

- [x] REQ-1 implemented — early docs-only step + step-level `if` gates
- [x] REQ-2 implemented — notify step removed from ci.yml only
- [x] REQ-3 implemented — post-merge concurrency flipped
- [x] `make workflow-lint` passes