[DanielThomas]

Summary

• Expose jist source scopes through ja describe module|type|member|file --source <scope> (-s), preserving the selected subject and compilation context as source expands from declaration to implementation, enclosing type, or compilation unit.
• Fold the separate source command into describe, preserving existing describe defaults and supporting all eight source scopes. Update command help, completion, and AOT warmup.
• Update the README and shipped skill with narrow source selection and bounded reads, dependency source inspection, resolved types versus origin lookup, search coverage, and reuse of search output.

Validation

• Full self-hosted JDK 25 suite: 599 tests found, 596 passed, 3 skipped.
• Skill-delivery regression passes after the final guidance edits, checking protocol and ja skill ja output against the shipped resource.
• Regression tests cover scope forwarding and option placement, completions, help, expansion around a selected nested member, attached dependency source JARs, and Gradle/Maven context delegation.
• git diff --check passes.