Updates to Agent_00.

Added generic agent backpressure instructions to task, review, remediation, and conflict-resolution prompts, including local validation expectations and project-specific BACKPRESSURE.md guidance from single-repo and multi-repo workspaces.

Improved generated branch handling by syncing new work branches with the latest base branch before PR push, asking the agent to resolve merge conflicts when needed, and detecting commits made by agents on existing non-default branches.

Hardened review automation by counting failed review runtimes as saved time, treating unsupported auto-merge setup as a logged skip instead of a task failure, and ignoring stderr transcript noise when checking whether an agent changed files.