aisman

Session 159, Step 4: Format starting credit dollar values
- AIM-3033 Format starting credit dollar values
- AIM-3034 Preserve long step durations during import
- AIM-3035 Prompt for additional stories linked to the current session
- AIM-3036 Add linked-story filter option to multi-story dialogs
- AIM-3037 Link and switch the displayed linked session
- AIM-3038 Toggle filtering by stories linked to the session
- AIM-3039 Consolidate stories from the linked-session filter
- AIM-3042 Conflict dialog when generating next step with cross-session linked story
- AIM-3043 Linked stories prompt when no story selected or unlinked story selected

Outcome:
Implemented the starting-credit formatting, long-duration import handling, and linked-story workflow interactions. JavaScript and C# diagnostics are clear; the project build reached only locked-output-file errors because the running Aisman process holds the binaries.