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 withsubagent_type: "general-purpose"andisolation: "worktree"— each worker creates its own branch pershared/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: trueError 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.mdshared/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