Implement an accepted NemoClaw GitHub issue in the current checkout. Use when a user asks to pick up an issue for implementation, implement or fix a named issue, or add the issue's tests. Confirm accepted scope, deliver the smallest independently valuable capability slice, and record validation and remaining gates without publishing a PR. Ask which lifecycle stage they want when "work on this issue" could mean planning or implementation. Do not use for issue planning, PR publication, independent security review, or maintainer loops. Trigger keywords - pick up issue for implementation, implement issue, fix issue, code issue, add issue tests.