What problem does it solve? Software delivery stalls when intent is ambiguous, investigations repeat, handoffs lose decisions, or multiple agents contend over shared state. This Skill provides a tactics reference for diagnosing and resolving those bottlenecks so work proceeds with clear ownership and preserved decisions. ## Core Features & Use Cases - Ambiguity Resolution: Restate the problem and observable outcome, recover prior decisions with source pointers, and use the smallest executable prototype to settle consequential unknowns. - Structured Handoffs: Handoffs carry root/revision, decisions, exclusions, ownership, known state, checks, and completion so resumed work reuses the decision record instead of rebuilding it from transcripts. - Ownership and Parallelization: Keep one accountable owner per coupled change and parallelize only independently verifiable work. - Use Case: When resuming a stalled feature after a context reset, read the handoff record to recover decisions and exclusions verbatim, then continue implementation without re-investigating settled questions. ## Quick Start Ask the agent to diagnose the current delivery bottleneck using the pstack-engineering tactics and apply the matching tactic from its references.