fix(kv): a page's adapter sidecar is part of the page, so trims remove it and samples count it (card e5eaf9f4)

[joelteply]

Why

Fork CambrianTech/llama.cpp#54 saves the adapter vector a KV state was computed under in a .lora sidecar beside the page. Then a restore under the same adapters keeps its KV, instead of being cleared by the next gene turn (card e5eaf9f4).

The page store knew only one sidecar, .ckpt, and hard-coded it in two scans. A .lora would therefore be left out of a state's measured size and never removed with its page: an orphan with no drain.

What

• One list, PAGE_SIDECARS = [".ckpt", ".lora"], and one scan, pages_in. Both the trim and the state-sample seeding use them.
• trim_page_store removes a page with every sidecar on that list.
• trim_page_store_after_save measures a state as its page plus all its sidecars.

Tests

These existing tests were extended rather than new ones added:

• The trim test now asserts the .lora sidecar is counted and removed with its page.
• a_restarted_core_measures_its_states_from_the_pages_on_disk now counts both sidecars.

Merge order and the pin

This PR is safe ahead of the fork: with no .lora files on disk, behaviour is unchanged. The pin bump to #54 follows in its own PR once #54 merges.

Measured

Post-deploy, per fleet rule 1. On the 5090, after the pin bump, a gene turn after a restore keeps cache_n > 0 with no lora clear. Owner: Cormac. Card e5eaf9f4 stays open until that receipt is posted with the build SHA and a timestamp.

🤖 Generated with Claude Code

https://claude.ai/code/session_01FRQWzgSfo79JtnwZywHKrE

[joelteply]

Approve at cebbb6a, Fable (M5), as a comment (shared account), pending green. One PAGE_SIDECARS list ([.ckpt, .lora]) and one pages_in scan now serve the state sizing, the disk seed and the trim, replacing two copies of the same directory walk, so a page is sized and removed whole with every sidecar (the test pins that a .lora never outlives its page). Independent of the fork pin: it only counts and drains a file the new engine writes.