Review E2E Spec

Validate that E2E_TESTS.md specification files are complete, well-structured, and follow the required format. This is a read-only command — it reports findings but does not modify any files.

Additional instructions from the user: "$ARGUMENTS". Ignore if empty.

Phase 1: Discover

1. Find all E2E_TESTS.md files in the project.
2. Read each one fully.

Phase 2: Validate Structure

For each E2E_TESTS.md, check:

Required elements

• Has an Index section with a markdown link to every suite
• Has at least one suite (H2 heading)
• Every suite has a ### Preconditions section
• Every suite has a ### Features section with at least one feature
• Features are flat peer headings directly under ### Features — no intermediate category headings (e.g., #### Core, #### Edge, #### Error). Categories are specified only via <!-- category: ... --> HTML comments.
• Every suite has a ### Postconditions section
• Every feature (H4 heading) has at least one assertion bullet

Metadata

• Every feature has a <!-- category: ... --> comment
• Category values are valid: core, edge, error, side-effect, idempotency
• Features with <!-- skip: ... --> have a documented skip reason

Quality

• No duplicate feature names within a suite
• Preconditions are achievable programmatically (no manual steps)
• Assertions are concrete and testable (not vague like "works correctly")
• Present tense, declarative style ("Creates file" not "Should create file")

Category coverage

For each suite, check that there is reasonable category diversity:

• At minimum, core features should exist
• Warn if no error features exist (error handling is often overlooked)
• Note if edge and idempotency are missing (informational, not blocking)

Phase 3: Report

Present findings per file:

Spec Review: packages/cli/E2E_TESTS.md
==========================================

Structure:  PASS (4 suites, 23 features)
Metadata:   WARN (2 features missing category)
Quality:    PASS

Issues:
  WARNING  Feature "Handle edge case" in suite "Task Creation" has no category comment
  WARNING  Feature "Process request" in suite "API" has no category comment
  INFO     Suite "Push" has no error-category features
  INFO     Suite "Init" has no idempotency-category features

Category distribution:
  core:        14 features
  edge:         3 features
  error:        4 features
  side-effect:  2 features
  idempotency:  0 features  ← consider adding

Summary: 2 warnings, 2 info notes

Do NOT modify the spec files. Report only.