Paths: File paths ( shared/ , references/ , ../ln- ) are relative to skills repo root. If not found at CWD, locate this SKILL.md directory and go up one level for repo root. ln-810-performance-optimization-coordinator Type: L2 Domain Coordinator Category: 8XX Optimization Coordinates performance optimization by delegating to L3 workers: ln-811 (algorithm), ln-812 (query), ln-813 (runtime). Workers run in parallel when inputs are independent. Overview Aspect Details Input Target file/module OR audit report (ln-650 output) Output Optimized code with verification proof Workers ln-811 (algorithm), ln-812 (query), ln-813 (runtime) Workflow Phases: Pre-flight → Analyze Input → Delegate → Collect → Verify → Report Phase 0: Pre-flight Checks Check Required Action if Missing Target file OR audit report Yes Block optimization Git clean state Yes Block (need clean baseline for revert) Test infrastructure Yes Block (workers need tests for keep/discard) MANDATORY READ: Load shared/references/ci_tool_detection.md for test/build detection. Phase 1: Analyze Input Input Sources Source Detection Workers Activated docs/project/persistence_audit.md ln-650 output exists ln-812 (query) + ln-813 (runtime) Target file + function User-specified ln-811 (algorithm) Full audit report All ln-65X sections present All three workers Worker Selection Condition ln-811 ln-812 ln-813 Target function specified Yes No No ln-651 findings present No Yes No ln-653 findings present No No Yes All audit findings Conditional Yes Yes *ln-811 activated only if specific algorithmic inefficiency identified in audit. Phase 2: Delegate to Workers CRITICAL: All delegations use Agent tool with subagent_type: "general-purpose" and isolation: "worktree" — each worker creates its own branch per shared/references/git_worktree_fallback.md . Delegation Protocol FOR each selected worker: Agent(description: "Optimize via ln-81X", prompt: "Execute optimization worker. Step 1: Invoke worker: Skill(skill: \"ln-81X-{worker}\") CONTEXT: {delegationContext}", subagent_type: "general-purpose", isolation: "worktree") Delegation Context Field Type Description projectPath string Absolute path to project auditReport string Path to persistence_audit.md (if applicable) targetFile string Target file path (if applicable) targetFunction string Target function name (if applicable) options.runTests bool Run tests after optimization options.runLint bool Run lint after optimization Parallelism Workers Can Parallel Reason ln-812 + ln-813 Yes Different files, different fix types ln-811 + ln-812 Depends Only if targeting different files ln-811 + ln-813 Depends Only if targeting different files Rules: If workers target the SAME file, run sequentially (ln-811 first, then ln-812/813). Dependent workers share branch: If worker B depends on worker A's output (e.g., ln-813 needs ln-812's query changes), launch worker B in worker A's branch — so B sees A's changes. Phase 3: Collect Results Each worker produces an isolated branch. Coordinator aggregates branch reports. Worker Branches Worker Branch Pattern Contents ln-811 optimize/ln-811-{function}-{ts} Algorithm optimizations with benchmarks ln-812 optimize/ln-812-{ts} Query optimizations ln-813 optimize/ln-813-{ts} Runtime optimizations Result Schema Field Type Description worker string ln-811, ln-812, or ln-813 status enum success, partial, failed branch string Worker's result branch name fixes_applied int Number of kept optimizations fixes_discarded int Number of discarded attempts details object Worker-specific report Phase 4: Aggregate Reports Each worker verified independently in its branch (tests, build, lint run by worker itself). Coordinator does NOT rerun verification or revert worker changes. On Failure Branch with failing tests logged as "failed" in report User reviews failed branch independently Phase 5: Report Summary Report Schema Field Description input_source Audit report or target file workers_activated Which workers ran total_fixes_applied Sum across all workers total_fixes_discarded Sum across all workers build_verified PASSED or FAILED per_worker[] Individual worker reports algorithm_improvement Benchmark improvement % (ln-811 only) Configuration Options :

Input

audit_report : "docs/project/persistence_audit.md" target_file : "" target_function : ""

Workers

enable_algorithm : true enable_query : true enable_runtime : true

Verification

run_tests : true run_build : true run_lint : true

Safety

revert_on_build_failure : true Error Handling Recoverable Errors Error Recovery Worker timeout Log timeout, continue with other workers Single worker failure Revert worker changes, report partial success Build failure Revert last worker, re-verify Fatal Errors Error Action No workers activated Report "no optimization targets found" All workers failed Report failures, suggest manual review Dirty git state Block with "commit or stash changes first" References ../ln-811-algorithm-optimizer/SKILL.md ../ln-812-query-optimizer/SKILL.md ../ln-813-runtime-optimizer/SKILL.md shared/references/ci_tool_detection.md Definition of Done Input analyzed (audit report or target file/function) Appropriate workers selected based on input type Workers delegated with worktree isolation ( isolation: "worktree" ) Each worker produces isolated branch, pushed to remote Coordinator report aggregates per-worker results (branch, fixes, status) Phase 6: Meta-Analysis MANDATORY READ: Load shared/references/meta_analysis_protocol.md Skill type: optimization-coordinator . Run after all phases complete. Output to chat using the optimization-coordinator format. Version: 1.0.0 Last Updated: 2026-03-08