diff --git a/server/src/session/claude.rs b/server/src/session/claude.rs
index f891ba4..79d89f5 100644
--- a/server/src/session/claude.rs
+++ b/server/src/session/claude.rs
@@ -179,12 +179,18 @@ const STDERR_LOG: &str = "stderr.log";
 /// The context size the CLI compacts at, rather than letting it choose.
 ///
 /// Left to `auto` a phone session drifts: these run for hours, nobody
-/// closes them, and the transcript carries screenshots. One measured here
-/// reached 491,562 tokens before the CLI compacted it, and *every* API
-/// call re-reads the whole context -- so at that size a single tool call
-/// bills about 49k tokens before it does anything, and one ordinary
-/// request ("can you make it so you can rename a session?") cost 4.2
-/// million across its 130 calls.
+/// closes them, and the transcript carries screenshots. Measured on one
+/// here, the window the CLI chose was 1M and it compacted at the ceiling
+/// -- its only automatic compaction fired at 1,000,184 tokens, and the
+/// context peaked at 999,668. Every API call re-reads the whole context,
+/// so near that ceiling a single tool call bills about 100k tokens
+/// before it does anything.
+///
+/// What kept that session usable was the person in it running `/compact`
+/// by hand, four times. That is the state this constant is really for:
+/// even between those manual compactions, at the merely-large contexts
+/// they left behind, one ordinary request ("can you make it so you can
+/// rename a session?") cost 4.2 million tokens across its 130 calls.
 ///
 /// 100k is the smallest window the CLI accepts and roughly the cheapest:
 /// per-call cost falls with the cap, while the compaction it forces costs