Both checks compared getTotalTokens() against the threshold. That
counter leaves out cache reads, so it stays far below the real context,
and the 500k cap ruled out thresholds on a 1M window.
POST /api/status-telemetry now hands context_window.total_input_tokens
and context_window_size to Session.noteContextReport(), which runs both
checks. The decision is a pure function, decideAutoThreshold(). The
counter stays the fallback when no report has arrived.
After a /compact or /clear the pre-command report is ignored by value,
since it stays the newest number until the command finishes. The first
differing report came later, so a swallowed command fires again instead
of locking the automation off. A counter summed from JSON usage never
drops after a compact, so it counts from its value at the last one. The
pane parser's counter is absolute and only moves past its high, so a
move clears that baseline and it fires as it did before.
Thresholds go up to the reported window, 1M when unknown, and a higher
value stops at the window. MAX_SESSION_TOKENS follows, and the pane
parser's M-suffix guard checks that cap instead of a fixed 0.5.
Refs #585
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>