aisman

Session 153, Step 16: L shortcut resets Alt+L pointer and does not record nav history
- AIM-2829 L shortcut resets Alt+L pointer and does not record nav history
- AIM-2868 Show implementation origin for IMPLEMENTED issues in session step issues
- AIM-2875 Save and restore selected credit provider in localStorage per running step
- AIM-2880 SessionStep dev/AI tool override columns with icon indicator
- AIM-2882 Fix missing primary-color checkbox icon for ready issues in all lists
- AIM-2885 Issue detail H2 title inline-edit and issue number copy-to-clipboard
- AIM-2886 Output validation: detect editor/host/model value overlap with warnings
- AIM-2889 Load and maintain client cache of user's editors, hosts, and models

Outcome:
All 8 issues implemented: AIM-2829 L shortcut now works from any tab with full tab/sub-tab switching, AIM-2868 implementation origin columns always updated on re-resolve, AIM-2875 starting credit persisted per-step in localStorage, AIM-2880 step.editor/step.host added to template and import with override detection, AIM-2882 ready icon fixed by preserving IssueTestResult during import, H2 click copies issue number to clipboard, output validation detects editor/host/model overlap, client cache tracks user's historical tools.