Add Wave general-purpose pipelines
ADR, changelog, code-review, debug, doc-sync, explain, feature, hotfix, improve, onboard, plan, prototype, refactor, security-scan, smoke-test, speckit-flow, supervise, test-gen, and more. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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.wave/pipelines/dead-code.yaml
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257
.wave/pipelines/dead-code.yaml
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kind: WavePipeline
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metadata:
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name: dead-code
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description: "Find dead or redundant code, remove it, and commit to a feature branch"
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release: true
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input:
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source: cli
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example: "find and remove dead code in internal/pipeline"
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steps:
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- id: scan
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persona: navigator
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workspace:
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mount:
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- source: ./
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target: /project
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mode: readonly
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exec:
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type: prompt
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source: |
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Scan for dead or redundant code: {{ input }}
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## What to Look For
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1. **Unused exports**: Exported functions, types, constants, or variables
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that are never referenced outside their package.
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2. **Unreachable code**: Code after return/panic, impossible branches,
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dead switch cases.
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3. **Orphaned files**: Files not imported by any other file in the project.
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4. **Redundant code**: Duplicate functions, copy-paste blocks,
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wrappers that add no value.
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5. **Stale tests**: Tests for functions that no longer exist,
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or tests that test nothing meaningful.
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6. **Unused dependencies**: Imports that are no longer needed.
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7. **Commented-out code**: Large blocks of commented code that
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should be deleted (git has history).
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## Verification
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For each finding, verify it's truly dead:
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- Grep for all references across the entire codebase
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- Check for reflect-based or string-based usage
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- Check if it's part of an interface implementation
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- Check for build tag conditional compilation
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Produce a structured JSON result matching the contract schema.
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Only include findings with high or medium confidence. Skip low confidence.
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output_artifacts:
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- name: scan_results
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path: .wave/output/dead-code-scan.json
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type: json
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handover:
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contract:
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type: json_schema
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source: .wave/output/dead-code-scan.json
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schema_path: .wave/contracts/dead-code-scan.schema.json
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on_failure: retry
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max_retries: 2
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- id: clean
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persona: craftsman
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dependencies: [scan]
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memory:
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inject_artifacts:
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- step: scan
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artifact: scan_results
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as: findings
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workspace:
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type: worktree
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branch: "chore/{{ pipeline_id }}"
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exec:
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type: prompt
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source: |
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Remove the dead code on this isolated worktree branch.
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The scan findings have been injected into your workspace. Read them first.
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## Process
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1. **Remove dead code** — ONLY high-confidence findings:
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- Start with unused imports (safest)
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- Then commented-out code blocks
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- Then unused exports
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- Then orphaned files
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- Skip anything with confidence=medium unless trivially safe
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- After each removal, verify: `go build ./...`
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2. **Run goimports** if available to clean up imports:
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```bash
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goimports -w <modified-files> 2>/dev/null || true
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```
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3. **Run full test suite**:
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```bash
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go test ./... -count=1
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```
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4. **Commit**:
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```bash
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git add <specific-files>
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git commit -m "chore: remove dead code
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Removed N items of dead code:
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- DC-001: <symbol> (unused export)
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- DC-002: <file> (orphaned file)
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..."
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```
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If ANY test fails after a removal, revert that specific removal
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and continue with the next item.
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handover:
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contract:
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type: test_suite
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command: "{{ project.test_command }}"
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must_pass: true
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on_failure: retry
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max_retries: 3
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- id: verify
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persona: auditor
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dependencies: [clean]
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memory:
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inject_artifacts:
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- step: scan
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artifact: scan_results
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as: original_findings
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exec:
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type: prompt
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source: |
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Verify the dead code removal was safe.
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The original scan findings have been injected into your workspace. Read them first.
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Check:
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1. Were only high-confidence items removed?
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2. Are all tests still passing?
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3. Does the project still build cleanly?
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4. Were any false positives accidentally removed?
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5. Is the commit focused (no unrelated changes)?
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Produce a verification report covering:
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- Items removed (with justification)
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- Items skipped (with reason)
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- Lines of code removed
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- Test status
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- Overall assessment: CLEAN / NEEDS_REVIEW
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output_artifacts:
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- name: verification
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path: .wave/output/verification.md
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type: markdown
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- id: create-pr
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persona: craftsman
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dependencies: [verify]
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memory:
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inject_artifacts:
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- step: scan
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artifact: scan_results
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as: findings
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- step: verify
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artifact: verification
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as: verification_report
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workspace:
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type: worktree
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branch: "chore/{{ pipeline_id }}"
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exec:
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type: prompt
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source: |
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Create a pull request for the dead code removal.
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## Working Directory
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You are running in an **isolated git worktree** shared with previous pipeline steps.
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Your working directory IS the project root. The branch already exists from the
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clean step — just push it and create the PR.
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## SAFETY: Do NOT Modify the Working Tree
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This step MUST NOT run `git checkout`, `git stash`, or any command that changes
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the current branch or working tree state.
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## Instructions
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### Step 1: Load Context
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The scan findings and verification report have been injected into your workspace.
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Read them both to understand what was found and the verification outcome.
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### Step 2: Push the Branch
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```bash
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git push -u origin HEAD
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```
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### Step 3: Create Pull Request
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```bash
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gh pr create --title "chore: remove dead code" --body "$(cat <<'PREOF'
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## Summary
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Automated dead code removal based on static analysis scan.
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<summarize what was removed: N items, types, estimated lines saved>
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## Verification
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<summarize verification report: CLEAN or NEEDS_REVIEW, test status>
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## Removed Items
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<list each removed item with its ID, type, and location>
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## Test Plan
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- Full test suite passed after each removal
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- Build verified clean after all removals
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- Auditor persona verified no false positives
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PREOF
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)"
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```
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### Step 4: Request Copilot Review (Best-Effort)
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```bash
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gh pr edit --add-reviewer "copilot" 2>/dev/null || true
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```
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## CONSTRAINTS
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- Do NOT spawn Task subagents — work directly in the main context
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- Do NOT run `git checkout`, `git stash`, or any branch-switching commands
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- Do NOT include Co-Authored-By or AI attribution in commits
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output_artifacts:
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- name: pr-result
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path: .wave/output/pr-result.json
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type: json
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handover:
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contract:
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type: json_schema
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source: .wave/output/pr-result.json
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schema_path: .wave/contracts/pr-result.schema.json
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must_pass: true
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on_failure: retry
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max_retries: 2
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outcomes:
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- type: pr
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extract_from: .wave/output/pr-result.json
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json_path: .pr_url
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label: "Pull Request"
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