Issues #202, #203, #204, #205:
- Cycle/seam triggers use active request input size + response
headroom reserve, not lifetime cumulative API usage.
- V4 hard-cycle headroom calibrated around fixed TURN_MAX_OUTPUT_TOKENS
plus CONTEXT_HEADROOM_TOKENS safety buffer.
- /tokens, /cost, footer/header labels, and docs now separate
active context, turn telemetry, cumulative usage, cache hit/miss,
context percent, and cost.
- Foreground exec_shell timeout output tells the model the process
was killed and suggests task_shell_start or background exec_shell
plus poll/wait.
- Added regression tests for active-token basis, V4 headroom,
seam trigger basis, footer label behavior, and shell timeout
recovery metadata.
- Preserved #200/#201 policy: V4 default is append-only,
prefix-cache preserving; replacement compaction, Flash seams,
and capacity intervention remain opt-in.
Hunter Bown
c2b2c284f6