Remove source-verification hints from CodeTrail skill

[mars167]

Summary

• remove navigation/evidence/source-confirmation guidance from the CodeTrail skill
• sync the npm packaged CodeTrail skill asset with the source skill

Tests

• scripts/quality-gate.sh pr

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Restore source verification before editing

For edit/review workflows that use the installed skill, this now directs agents to use compact defs/symbols --include-code snippets as code context without preserving the instruction to read the actual source before editing or making strong claims. Those snippets can be truncated and, per the Boundaries section, may be parser-derived or otherwise only navigation evidence, so the skill can lead agents to act on non-source evidence instead of the project's required exact source read. Keep the host read/editor verification guidance or explicitly qualify these snippets as navigation-only.

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