2026-08-19 (very late) - The first implemented function, and what it taught

D082-D083; 24 crates, 287 tests.

Wired declarations through to the guest - there had been no path from a declared function to a running one, so implementing anything would have changed nothing silently. Then implemented sceKernelDirectMemoryQuery, chosen because it is 99.9% of every call four commercial executables make.

Surprises

• ServiceConfig::default() could not resolve a single import. Empty hash suffix, so the worker's registry hashed to values nothing imports by. Everything built, everything ran, every lookup missed. A default that does not work is a trap, and it had been there since the suffix became available.
• The guest ignores return codes entirely. Ten candidate error values, spanning both signs, all behaved identically. An hour of reasoning would not have found that; a minute of sweeping did.
• It reads the buffer instead, and the terminal path was not writing it - so the guest re-read the previous answer forever. Clearing it changed the loop from 0 END END END to 0 END 0 END, which is the walk actually terminating.
• A test caught me implementing an undeclared function. sceKernelDirectMemoryQuery was implemented and never added to guest_module!, so it could never have been reached. The test existed precisely for that and fired on its first run.

Outstanding

The guest walks the map, rejects one free 8 GiB region, and starts again. Sweeping single fields has stopped paying - what is needed now is the structure's real layout, obtained from a binary we wrote ourselves rather than inferred. obSCEne stops being a roadmap item here and becomes the tool the work requires.