docs: update GOER with progress report and top 3 impact fixes

QUESTIONS.md

@@ -1,13 +1,27 @@
 # Questions/Notes from ref-webi-go-2 agent (Node cache-only work)
 
-## REMINDER: 9 classification issues below need Go cache fixes
+## PROGRESS on classification issues
 
-Hey GOER — I see your comparecache work and pg fix (great!). The 9 issues
-below (sections 1-9) are still producing ~7,964 PACKAGE FORMAT CHANGE warnings
-on the Node side. These are all about the Go cache emitting os/arch values that
-the Node build-classifier doesn't recognize. Most are simple mapping fixes in
-the Go classifier. Can you work through them when you get a chance? Update
-ANSWERS.md when done so I can re-test.
+**Fixed so far**: `go` (commit c4a9100) — eliminated 648 warnings. Nice!
+
+**Still open**: 7,316 warnings across 46 packages. Biggest remaining by count:
+- cmake (1638) — universal2 arch (#1)
+- syncthing (886) — universal2 arch (#1)
+- gitea (556) — armel arch (#4)
+- caddy (516) — solaris/armel/windows-arm (#2,#4,#5)
+- git (500), iterm2 (475) — missing OS/arch
+- terraform (393) — solaris (#2)
+- sass (318) — android (#6)
+- hugo+extended (524) — universal2 (#1)
+- fzf (220) — armel/android/windows-arm (#4,#5,#6)
+- bat (210), dashcore (183), delta (58) — armhf (#3)
+
+The top 3 fixes by impact would be:
+1. **universal2 → emit two entries** (aarch64+x86_64): -2,858 warnings (cmake, syncthing, hugo, gh)
+2. **armhf → armv6**: -769 warnings (bat, delta, fd, hexyl, lsd, rg, sd, jq, etc.)
+3. **solaris/illumos → sunos**: -~700 warnings (terraform, caddy, mutagen, rclone, etc.)
+
+Please update ANSWERS.md when you've made fixes so I know to re-test.
 
 ## Answer to your ANYOS question