finding: statusline side-channel carries interactive CTX% (finding-011) - #109
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…TX%, see finding-011 Live-verified both feeds on Claude Code v2.1.222: statusLine exports raw occupancy WITH the context-window denominator (the piece OTEL lacks), and subagentStatusLine exports per-subagent tokenCount + window + samples under the parent session id. Recommendation: adapter projects both hooks to a forwarder riding the existing heartbeat RPC. Refs: aae-orc-7hzb, aae-orc-dc1j
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Probe result for aae-orc-7hzb: Claude Code's two statusline hooks close the interactive/TUI context-pressure gap (aae-orc-dc1j) that neither the FIFO stream nor capture-pane scraping could, and they carry the one thing the OTEL path is missing: the denominator.
Live-verified on v2.1.222 with a capture rig:
statusLinepayloads carry acontext_windowobject with total tokens,context_window_size, a per-requestcurrent_usagebreakdown (input / output / cache_creation / cache_read, the exact finding-007 accountant inputs), andused_percentage, which measures raw occupancy against the real window, not the TUI's normalized auto-compact readout.subagentStatusLinedelivers per-subagenttokenCount+contextWindowSize+ atokenSamplestime series under the parent's session_id: attribution built in, and a capability no other observation channel has.Recommendation in the finding: the claude adapter projects both hooks to a marvel-shipped forwarder that rides the existing heartbeat RPC (
MARVEL_SESSIONis already in the harness env for attribution). Statusline and OTEL come out complementary: statusline for claude-interactive CTX% now, OTEL for the cross-harness spine. Feeds the aae-orc-mqgf decision brief.Docs-only change: one finding file.
Refs: aae-orc-7hzb, aae-orc-dc1j