Disposable Spike — Phase 1: Generate

Generate a disposable prototype from requirements, collect metrics, and prepare for autopsy analysis.

Prerequisites

• Project has language toolchain installed (see references/tool-profiles.yml in disposable-cycle)
• Git repository with clean working tree
• .disposable/ directory will be created if absent

Procedure

Step 1: Initialize Cycle

1. Determine cycle number:
   • If .disposable/history.json exists, read last cycle number and increment
   • Otherwise start at cycle_1
2. Create cycle directory: .disposable/cycles/cycle_{N}/
3. Check .disposable/.lock — if locked and not expired (60min TTL), abort with message
4. Write .disposable/.lock with PID, timestamp, TTL

Step 2: Detect Language & Tool Profile

1. Scan project root for language indicators:
   • tsconfig.json / package.json → TypeScript
   • pubspec.yaml → Dart
   • Package.swift / *.xcodeproj → Swift
   • mix.exs → Elixir
   • Cargo.toml → Rust
2. Load matching tool profile from disposable-cycle references/tool-profiles.yml
3. If no match found, ask user to specify language

Step 3: Create Isolated Branch

git checkout -b disposable/cycle_{N} HEAD

Step 4: Generate Prototype

1. Read $ARGUMENTS as requirements specification
2. Generate implementation code following these constraints:
   • Speed over perfection — this code will be thrown away
   • Cover the interface surface — focus on API shape and behavior
   • Include basic tests — enough for autopsy metrics, not production quality
   • No external network calls (per security-policy.md)
3. Commit generated code:

   git add -A && git commit -m "spike(cycle_{N}): disposable prototype"

Step 5: Collect Metrics

Run tool profile commands in order:

1. Lint: Execute lint command from tool profile, capture output
   • For non-ESLint formats (dart-analyze-json, swiftlint-json, credo-json, cargo-json): convert to ESLint JSON array format [{ messages: [{ severity: 1|2, ... }] }] before passing to aggregate
   • Use the tool profile's severityMap for mapping
2. Test: Execute test command (prefer junitCommand if available), capture JUnit XML output
   • For Dart (dart test --reporter=json): use junitCommand or convert JSON to JUnit XML before passing to aggregate
3. Coverage: Execute coverage command, capture LCOV output
   • If tool profile has tool: null (e.g., Swift coverage): skip --coverage argument in aggregate call

Step 6: Aggregate Metrics

node {plugin_root}/scripts/dist/aggregate.mjs \
  --lint {tool_profile.lint.outputPath} \
  --test {tool_profile.test.outputPath} \
  --coverage {tool_profile.coverage.outputPath} \
  --cycle cycle_{N} \
  --lang {detected_language} \
  -o .disposable/cycles/cycle_{N}/spike-complete.json

Note: {tool_profile.*} paths come from the selected tool profile in references/tool-profiles.yml. Do not hardcode paths — each language has different output paths and formats. Omit --lint, --test, or --coverage arguments when the corresponding tool profile has tool: null (e.g., Swift coverage is not yet supported).

Step 7: Mask & Finalize

1. Run sensitive data masking:

   node {plugin_root}/scripts/dist/mask-sensitive.mjs \
     .disposable/cycles/cycle_{N}/spike-complete.json --in-place

2. Release lock: remove .disposable/.lock
3. Report summary to user:
   • Cycle ID
   • Language detected
   • Lint issues (error/warning/info)
   • Test results (pass/fail/skip)
   • Coverage percentages
   • Data completeness flags

Output

• .disposable/cycles/cycle_{N}/spike-complete.json — unified metrics (metrics-schema.json)
• Generated code on disposable/cycle_{N} branch
• Spike is ready for /disposable-autopsy

Error Handling

• If lint/test/coverage tool fails: set dataCompleteness.{source}=false, continue with available data
• If git branch creation fails: abort with clean error message
• If lock exists: show lock info (PID, age) and ask user to force-release or wait