feat: add plan and review workflow skills

.config/opencode/skills/dispatching-parallel-agents/SKILL.md

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+---
+name: dispatching-parallel-agents
+description: Dispatch focused subagents in parallel for genuinely independent problem domains
+permalink: opencode-config/skills/dispatching-parallel-agents/skill
+---
+
+# Dispatching Parallel Agents
+
+## Core Value
+
+When there are 2+ genuinely independent failures/problem domains, dispatch one focused agent per domain concurrently instead of serial investigation.
+
+## When to Use
+
+Use when all are true:
+- You have multiple failures across separate domains.
+- Each domain can be investigated without shared context/state.
+- Agents can work without touching the same files or interfering.
+
+Do **not** parallelize when:
+- Failures may share a root cause.
+- You still need a single root-cause investigation first.
+- Agents would edit the same area and conflict.
+
+## Dispatch Pattern
+
+1. Split failures into independent domains.
+2. Write one prompt per domain.
+3. Dispatch subagents concurrently with the `task` tool.
+4. Review results, integrate non-conflicting fixes, then run full verification.
+
+Example dispatch intent (tool-level wording):
+- `task`: "Investigate and fix failures in <domain A only>"
+- `task`: "Investigate and fix failures in <domain B only>"
+
+## Prompt Quality Requirements
+
+Each subagent prompt must include:
+1. **One clear problem domain** (single file/subsystem/failure cluster).
+2. **Self-contained context** (errors, failing tests, relevant constraints).
+3. **Explicit constraints** (what not to change; scope boundaries).
+4. **Explicit expected output** (root cause + files changed + validation run).
+
+## Verification and Quality Pipeline
+
+After subagents return:
+1. Check for overlapping edits or assumption conflicts.
+2. Run required verification for the integrated result (not partial checks).
+3. Send the feature through reviewer, then tester when behavior is user-facing.
+4. Do not claim completion without fresh verification evidence.