aisman

Session 153, Step 14: Show implementation origin for IMPLEMENTED issues in session step issues
- AIM-2868 Show implementation origin for IMPLEMENTED issues in session step issues
- AIM-2873 Resolved session already visible in list gets added to 'Individually loaded' group on click
- AIM-2874 #wfS4StartingCredit textbox must always show AiCreditProviderCreditRemaining value
- AIM-2875 Save and restore selected credit provider in localStorage per running step
- AIM-2876 Save button not shown when #settingsInsertCodingPrinciples or #settingsInsertAisman changes file content

Outcome:
Fixed 5 issues:

1. **AIM-2868 (n10):** Implementation origin columns now set in `IssuesController.Update` when status changes to Done. Last step pre-populated rendering now passes origin fields.
2. **Resolved session 'Individually loaded' bug:** Added `#resolvedSessionList` to the primary target selector in `selectSession()`.
3. **wfS4StartingCredit:** Changed pre-fill source from `purchase.remaining` to `provider.creditRemaining`.
4. **Credit provider localStorage:** Added per-step save/restore and global last-selected key.
5. **Settings Save button:** Removed `disk-version` updates from insert functions, triggering `input` event instead.