# Ralph Loop Progress for estimate-transaction-fee
# Append after EVERY iteration

=== Iteration 1 (2026-01-07) ===
Tests: 6 pass / 0 fail
Help: works (exit 0)
What I did:
- Implemented full fee estimation logic in estimate.ts
- Added Transaction import from @bsv/sdk for tx hex parsing
- Implemented size estimation from --size, --tx hex, and --inputs/--outputs
- Added --rate flag for custom fee rate (default 1 sat/byte)
- Added --json flag for machine-readable JSON output
- Added proper error handling for negative/invalid inputs
- Calculation uses Math.ceil() to round fees up for safety
What's left: Update SKILL.md to mark as complete

=== Final Verification ===
- bun test: 6 pass / 0 fail (9 expect calls)
- --help: exits 0 with HELP_OK
- --size -100: exits 1 with "Error: Size must be positive integer"
- All completion criteria PASS

