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Add TUIFastRefreshInterval time.Duration to flags.Config struct with a
default of 250ms and register it as the -tui-fast-refresh CLI flag so
callers can tune or disable the high-frequency TUI refresh cadence for
the flamegraph and stream tabs.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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A negative or zero -duration was silently accepted, causing the trace
context to be cancelled immediately (time.Duration(N) * time.Second with
N <= 0 yields a non-positive timeout), so no events were ever captured.
parseFromFlagSet now returns an error for Duration <= 0, matching the
existing pattern used for -resetTimer validation.
Three new tests cover the negative, zero, and valid positive cases.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Remove the global atomic.Pointer[Config], sync.Once, and parseErr fields
from the flags package. Parse() now returns (Config, error) directly,
eliminating all global-state accessors (Get, SetPidFilter, SetTidFilter,
SetTUIExportEnable, setCurrent, updateCurrent). The internal parse logic
is factored into parseFromFlagSet so tests can inject a fresh FlagSet
without touching os.Args or package-level state.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Live flamegraph trie and stats engine grow unboundedly during long
traces. Add a periodic auto-reset (same effect as the 'r' key) so they
stay bounded.
- New CLI flag -resetTimer=30s (default 30s, 0 disables).
- Hotkey I cycles the cadence: off -> 15s -> 30s -> 60s -> 5m -> off.
Custom intervals (e.g. -resetTimer=47s) advance to the first preset
greater than the current value, then wrap to off.
- autoResetTickMsg carries a generation counter so changing the cadence
drops in-flight ticks scheduled under the previous interval.
- Dashboard chrome shows 'auto-reset: 30s' or 'auto-reset: off'.
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