devx/docs/specs/DEVX-171.md

DEVX-171: create_dependency_pr uses target-project task ID + generated spec

Problem

Dep PRs fail target-repo validation: infra requires OBL-INFRA-N in the branch name and docs/specs/<TASK>.md in the diff. The tool created the Vikunja task in the producer's project and named the branch deps/<pkg>-<ver> with no task ID, and wrote no spec.

Approach

REQ-1: Create the tracking task before branch creation, in the target repo's Vikunja project via --task-project-id (default: DEVX_VIKUNJA_PROJECT_ID). Embed the returned identifier in the branch name (deps/<TASK>-<pkg>-<ver>) and PR title, and commit a generated docs/specs/<TASK>.md with the required sections alongside the pin bump.

Test Plan

• Branch name and PR title carry the target task ID; spec file added.
• create_vikunja_task(project_id=N) passes N to VikunjaClient.
• Existing no-task behavior preserved when Vikunja is unreachable.

Deploy Plan

devx release tag; producer workflows pass --task-project-id for infra (project 3).

Rollback Plan

Revert; dep PRs keep failing target validation (status quo).

Acceptance Criteria

• REQ-1: --task-project-id supported; branch/spec/PR title embed the target task ID; covered by unit tests at 100% coverage.