Pilot: issue-tracker-based agent orchestration (Symphony-inspired) for dev-tools

[coisa]

Problem

Team workflow is still centered on interactive agent sessions and manual command launches, which increases context switching and does not scale when multiple GitHub issue-driven tasks run in parallel.

Proposal

Adopt a GitHub-issue orchestration pattern inspired by OpenAI's Symphony concept, where open issues become the control plane for agent work:

• Every eligible issue enters a bounded queue for automated execution.
• A worker process orchestrates environment preparation, runs one agent per issue in isolation, and posts proof-of-work artifacts.
• Human review remains the final gate for risky changes.

This should start as a pilot in dev-tools and be evaluated for reuse by other Fast Forward projects.

Goals

• Define a deterministic process where each issue maps to one isolated execution context.
• Route issue lifecycle through explicit states (queued, running, waiting-review, done, blocked).
• Keep outputs machine-consumable and CI-safe, with deterministic logs and artifacts.
• Ensure the agent writes:
  • GitHub issue comments with summary and PR/commit links
  • Required PR updates when code/workflow changes are ready
  • Failure evidence when blocked.

Expected Behavior

• A maintainer can create a regular issue with a clear objective and have the next orchestration run pick it up automatically.
• The system performs non-interactive analysis/implementation with retries and bounded concurrency.
• Complex changes do not block single-threaded manual intervention.
• Successful runs conclude in a reviewable state (agent-review) with attached PR/comment.

Implementation Strategy

Phase 0 - Feasibility Scaffold

• Create a repository-specific WORKFLOW.md contract that defines:
  • task intent
  • acceptance criteria format
  • deterministic command matrix (composer dev-tools, focused PHPUnit, lint tasks)
  • stop conditions and blocker rules.
• Define issue intake requirements in the issue body: objective, acceptance criteria, constraints, failure mode, allowed scope.
• Add a thin orchestrator that:
  • polls GitHub issues by query/state,
  • creates per-issue workspaces,
  • runs an agent with repo-specific prompt,
  • writes structured status artifacts.

Phase 1 - Safety and Guardrails

• Add retry and backoff for transient CI/API failures.
• Add guardrails for:
  • destructive command prevention
  • required metadata completeness
  • output normalization for downstream tooling
  • workspace cleanup for failed or blocked runs
• Persist run summaries in versioned JSON artifacts for diagnostics.

Phase 2 - Review and Handoff

• Automatically post issue comments with:
  • what changed
  • validation results
  • PR links
  • blocking reasons when applicable
• Escalate non-trivial or blocked runs to agent-review with a clear call-to-action.

Phase 3 - Rollout

• Start with documentation/workflow tasks only.
• Expand to changelog/chore workflows after baseline reliability.
• Keep manual override available at every stage.

Integration with existing tools

• Keep issue lifecycle actions aligned with existing Fast Forward GitHub workflows.
• Use dedicated skills for issue creation/updates, PR publication, and review automation.
• Keep dev-tools command surfaces thin and deterministic, with clear separation between orchestration and domain logic.

Non-goals

• Replace human engineering judgment or final PR review.
• Permit autonomous multi-project edits without explicit repository-level constraints.
• Introduce external trackers before github issue path is proven.
• Convert issue triage to a fully autonomous behavior without explicit review gates.

Benefits

• Reduced context switching and less manual steering of repeated tasks.
• Faster throughput for deterministic maintenance and automation tasks.
• Centralized audit trail from issue -> execution -> artifacts -> PR.
• Cleaner separation between strategy (issue + WORKFLOW.md) and execution.

Acceptance Criteria

Functional Criteria

• A repository issue matching configured criteria is automatically processed by the orchestration run.
• Each issue executes in an isolated workspace.
• Success and failure outcomes are posted back on the originating issue.
• A successful run produces either a PR or a defined human-review handoff state.
• Existing CI-critical workflows remain represented in review/status-safe flow.
• Manual issue triage remains available and unblocked.

Architectural / Isolation Criteria

• MUST: The core logic MUST be isolated into dedicated classes or services instead of living inside command or controller entrypoints.
• MUST: Responsibilities MUST be separated across input resolution, domain logic, processing or transformation, and output rendering when the change is non-trivial.
• MUST: The command or controller layer MUST act only as an orchestrator.
• MUST: The implementation MUST avoid tight coupling between core behavior and CLI or framework-specific I/O.
• MUST: The design MUST allow future extraction or reuse with minimal changes.
• MUST: The solution MUST remain extensible without requiring major refactoring for adjacent use cases.
• MUST: Argument and option resolution MUST be validated separately from command execution logic.
• MUST: Exit behavior, error messaging, and generated output MUST remain deterministic and testable.
• MUST: Data gathering or transformation MUST be isolated from filesystem writes or publishing steps.
• MUST: Re-running the orchestration workflow MUST be idempotent or have bounded, explicit side effects.

[coisa]

Duplicate of #287. Closing to keep a single source of truth for this proposal.