alpoxdev/deploy-fix

Deploy Fix Skill

Diagnose a build, CI, or deployment failure, choose the safest repair path, and fix it — classify complexity first, then either fix directly or track progress through structured phases.

<output_language>

Default all user-facing deliverables, saved artifacts, reports, plans, generated docs, summaries, handoff notes, commit/message drafts, and validation notes to Korean, even when this canonical skill file is written in English.

Preserve source code identifiers, CLI commands, file paths, schema keys, JSON/YAML field names, API names, package names, proper nouns, and quoted source excerpts in their required or original language.

Use a different language only when the user explicitly requests it, an existing target artifact must stay in another language for consistency, or a machine-readable contract requires exact English tokens. If a localized template or reference exists (for example *.ko.md or *.ko.json), prefer it for user-facing artifacts.

</output_language>

<request_routing>

Positive triggers

• A build command fails with a concrete error such as Module not found, type errors, or compilation failures.
• A CI pipeline step fails with a specific error in logs (lint, test, build, or deploy stage).
• A deployment fails with a concrete error such as function timeout, missing env vars, or platform-specific build errors.
• A specific folder or workspace within a monorepo fails to build.

Out-of-scope

• Runtime bugs in application code with a reproduction path. Route to bug-fix.
• Security audits, exploit review, or trust-boundary analysis. Route to security-review.
• New feature work, refactors, or speculative cleanup not tied to a concrete failure.
• General performance optimization without a failing build or deploy.

Boundary cases

• If the user asks for root-cause analysis only, stay in diagnosis mode and do not edit.
• If a CI failure is caused by a single runtime bug (e.g., a failing test from a code defect), this skill owns the CI-level fix; hand off the underlying code bug to bug-fix if the root cause is application logic.
• If the failure spans build + deployment + runtime, own the build/deploy layer and hand off runtime to bug-fix.

</request_routing>

<argument_validation>

If ARGUMENT is missing, ask immediately:

What build/CI/deploy failure should be fixed?
- Error message or failing log output
- Build command or CI step that fails
- Full repo build or specific folder/workspace?
- CI provider (GitHub Actions, Vercel, etc.) if applicable
- Regression or new? (Did it work before? When did it start failing?)
- Consistent or intermittent?
- Recent changes, suspect commits, or environment details
- Relevant config files (package.json, tsconfig, CI config, vercel.json, etc.)

</argument_validation>

<mandatory_reasoning>

Mandatory Structured Reasoning

Before implementation, perform an internal structured reasoning pass. Depth scales with complexity:

• Simple (3 steps): Identify failing step -> determine fix -> verify approach
• Medium (5 steps): Classify -> reproduce locally -> hypothesize -> compare options -> recommend
• Complex (7+ steps): Classify -> reproduce -> analyze dependency chain -> check CI config -> hypothesize multiple causes -> compare options -> assess cross-cutting impact -> recommend

Recommended sequence:

1. Complexity classification
2. Failure reproduction and log analysis
3. Root-cause hypotheses
4. Option comparison
5. Final recommendation

Before any edit, collect root-cause evidence from build logs, CI output, or deployment logs and reduce the problem to the narrowest failing boundary you can verify.

</mandatory_reasoning>

<complexity_classification>

Complexity Classification

Classify immediately after the structured reasoning pass:

| Complexity | Signals | Examples | Path | |------------|---------|----------|------| | Simple | Single file/config, clear error message, obvious root cause, one fix path, low risk | Missing env var, single typo in config, one outdated dependency, clear type error in one file | Fix-now -- proceed directly without flow tracking | | Complex | Multiple packages/configs involved, dependency chain issues, CI environment mismatch, fix has side effects across workspaces, multiple valid fix strategies | Cross-workspace type error chain, CI-only failure with no local repro, lockfile conflicts across multiple packages, build succeeds but deploy fails | Tracked -- create .hypercore/deploy-fix/flow.json |

Announce the classification:

Complexity: [simple/complex] -- [one-line reason]

When uncertain, classify as complex. It is cheaper to track than to lose investigation progress.

</complexity_classification>

<flow_tracking>

Flow Tracking (Complex Path Only)

When classified as complex, initialize the flow:

mkdir -p .hypercore/deploy-fix

Write .hypercore/deploy-fix/flow.json and update it as each phase progresses. See references/flow-schema.md for the full schema.

Phase progression

| Phase | Description | Next | |-------|-------------|------| | investigate | Reproduce failure, analyze logs, isolate root cause | options | | options | Present 2-3 fix options with tradeoffs | confirm | | confirm | Wait for and record user selection | fix | | fix | Implement selected option | verify | | verify | Run build/CI/deploy validation, report outcome | done |

Resume support

If .hypercore/deploy-fix/flow.json already exists, read it first and continue from the last incomplete phase (in_progress or pending). Do not restart completed phases.

</flow_tracking>

<execution_modes>

Use one of these branches explicitly:

• Diagnose-only: reproduce failure, isolate the failing step, summarize evidence, and stop before code edits.
• Fix-now (simple path): If the user explicitly asks for a direct fix and one path is clearly the safest, say which path you are taking and implement without a second confirmation round. No flow tracking.
• Option-first (complex path): present 2-3 repair options with flow tracking and wait for user selection.
• Handoff: route runtime application bugs to bug-fix and security review requests to security-review.

</execution_modes>

<investigation_strategy>

Investigation Strategy

Check these areas in order of likelihood:

1. Build logs: read the exact error output, identify the first failure point
2. Dependency issues: lockfile conflicts (package-lock.json/pnpm-lock.yaml integrity), missing packages, version mismatches, peer dependency warnings, hoisting problems
3. Config files: tsconfig.json, package.json, next.config.*, vercel.json/vercel.ts, CI workflow files, bundler config
4. Environment: Node.js version, env vars, platform-specific differences (local vs CI vs deploy target), memory limits (OOM during build)
5. Build cache: stale or corrupted build cache (.next/, .turbo/, node_modules/.cache/), --force rebuild to isolate
6. Cross-workspace: monorepo dependency graph, build order, shared package version drift
7. Recent changes: git log and git diff to find suspect commits that may have introduced the failure

</investigation_strategy>

<workflow>

Simple Path (Fix-now)

| Step | Task | Tool | |------|------|------| | 1 | Validate input, structured reasoning pass (3 steps) | internal reasoning | | 2 | Classify as simple | - | | 3 | Reproduce failure locally, read error output | Bash + Read | | 4 | Identify root cause from logs/config | Read/Grep/Glob | | 5 | Announce fix path and implement | Edit | | 6 | Run validation (build/lint/typecheck/deploy) | Bash | | 7 | Report outcome and changed files | - |

Complex Path (Option-first)

| Step | Task | Tool | |------|------|------| | 1 | Validate input, structured reasoning pass (7+ steps) | internal reasoning | | 2 | Classify as complex, create .hypercore/deploy-fix/flow.json | Write | | 3 | Deep investigation: reproduce, analyze logs, trace dependency chain -> update flow investigate: completed | Bash + Read/Grep/Glob + Edit | | 4 | Present 2-3 fix options -> update flow options: completed | Edit | | 5 | Wait for user selection -> update flow confirm: completed | Edit | | 6 | Implement selected option -> update flow fix: completed | Edit/Write | | 7 | Run validation -> update flow verify: completed | Bash + Edit | | 8 | Report outcome, set flow status to completed | Edit |

</workflow>

<option_presentation>

Use this format (complex path):

## Deploy Failure Analysis

**Root cause**: ...
**Failure scope**: [repo-wide / workspace / CI step / deploy target]
**Complexity**: complex

### Option 1: ... (Recommended)
- **Pros**:
- **Cons**:
- **Risk**:
- **Files**:

### Option 2: ...
- **Pros**:
- **Cons**:
- **Risk**:
- **Files**:

### Option 3: ... (Temporary)
- **Pros**:
- **Cons**:
- **Risk**:
- **Files**:

Recommendation: Option N (reason ...)
Which option should I apply? (1/2/3)

</option_presentation>

<implementation_rules>

• Do not modify code before user option selection unless in the explicit Fix-now branch.
• Avoid speculative edits; use evidence from build/CI/deploy logs only.
• Keep scope limited to the failing build/CI/deploy path and its direct dependencies.
• Always run targeted validation for the changed path: rebuild the failing target, re-run the failing CI step, or re-trigger the failing deploy.
• Report the commands run, the key result lines, and the touched files in the final report.
• If validation cannot run locally (e.g., CI-only environment), say why and what remains unverified.

Reporting

After execution, report:

## Done

**Failure**: [original error / failing step]
**Root cause**: [what was wrong]
**Fix applied**: [which option or approach]
**Changes**: [list of changed files]
**Validation**: [what was verified and result]

For complex path: also update .hypercore/deploy-fix/flow.json status to completed.

</implementation_rules>

<validation>

Execution checklist:

• [ ] ARGUMENT validated
• [ ] Structured reasoning pass completed (depth matches complexity)
• [ ] Complexity classified (simple/complex)
• [ ] Flow JSON created and maintained (complex path only)
• [ ] Root-cause evidence collected from logs/config
• [ ] 2-3 options presented (complex path) or fix path announced (simple path)
• [ ] User choice confirmed (complex path)
• [ ] Build/CI/deploy validation executed
• [ ] Outcome + touched files reported
• [ ] Flow JSON finalized with completed status (complex path only)

Forbidden:

• [ ] Speculative fix without build/CI/deploy log evidence
• [ ] Immediate implementation without options (complex path)
• [ ] Implementation without explicit user choice (complex path)
• [ ] Completion claim without running the failing build/CI/deploy command
• [ ] Skipping flow JSON updates in complex path

</validation>