Correct stale common file count (61 -> 82 of 144)
Fix stale file-count figure; note jar manifest Vendor divergence The "17 of 218" figure was wrong from the start - real total is 144 Java files in common/src/main. Corrected to 61/144.
Update Module Status: common's source conversion is underway 17 of 218 files done, and note that test isn't actually a safe leaf module despite its grouping.
Add wiki: Home + six pointer pages Same short-pointer philosophy as this user's other portfolio forks - each page states one thing and links to the authoritative source (diagram pages, todo.md) rather than duplicating it.