iris
bf3479f5c4
Review of 73251d6's port of TranscriptSource/joinPages. `TranscriptSource::page` answered `before == 0` with an empty `Vec`, which is the same value it answers "this conversation has no more history" with. That is the state the Kotlin keeps apart: `loadOlderPage` returns false at `oldestSeq == 0` *without* touching `moreHistory`, and returns false on an empty page *by latching it*. Collapsing the two moved AGENTS.md's paging bug one layer down rather than fixing it. `page` returns `OlderPage` now -- `Events(vec![])` is the start of the conversation, `NothingLoaded` is not an answer about the conversation at all. `join_pages`' `debug_assert!` on seq ordering across the boundary is not a true invariant: a peer note carries the seq its turn began at, which can be older than the page it arrived in, so an ordinary transcript would have panicked a debug build there. Replaced with the one the function exists to enforce -- no tool id surviving in both halves. `fetch_transcript_lines` stores `RawValue`'s exact server bytes, so the "neither source can produce a newline" comment in `SessionCache::append` now rests on the server's serializer staying compact rather than on a local normalization. Checked with a `debug_assert!` in `append` and `store_page` rather than trusted. Tests for the failure half, which the port had none of: a 500 mid-page, a cached line this build cannot read, and the `after` bound in the case that actually carries one (the existing test asserted only the case with no bound). `cargo fmt`, `cargo clippy --all-targets`, `cargo test` (112) clean in client-core; `cargo check -p desktop-app` clean.