/implement

Implementation progress tracker for spec projects. Creates and maintains PROGRESS.md checkpoint file, tracks task completion, syncs state to planning documents. Part of the /claude-spec suite - use /claude-spec:plan to plan, /claude-spec:status for status, /claude-spec:complete to complete.

<help_check>

## Help Check

If `$ARGUMENTS` contains `--help` or `-h`:

**Output this help and HALT (do not proceed further):**

<!--
  NOTE: This help output is generated from the argument schema defined in <argument_schema>.
  See <help_generation> for the generation algorithm.
  When updating arguments, update the schema and regenerate this block.
-->

<help_output>



</help_output>

**After outputting help, HALT immediately. Do not proceed with command execution.**
</help_check>

<argument_schema>

## Argument Schema

This command uses the extended argument schema for `/implement`:


...