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COD-80 raise terminal history/scrollback/buffer defaults

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Bump the centralized terminal-history defaults: tmux scrollback 50k->100k and
PTY buffer cap 2MB->32MB (trim 1.5MB->24MB). Both remain env/settings overridable
and bounds-clamped. Worst-case 20-session buffer budget rises 40MB->640MB.
Stacked on the terminal-history config commit.
This commit is contained in:
Aamer Akhter
2026-07-01 13:00:08 -04:00
parent 1fa88cd187
commit ad71a92f29
3 changed files with 18 additions and 19 deletions
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test/terminal-history.test.ts
+8 -8
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@@ -22,11 +22,11 @@ describe('resolveTerminalHistoryConfig', () => {
});
});
it('defaults match the prior hardcoded values (behavior-neutral)', () => {
expect(DEFAULT_TMUX_HISTORY_LIMIT).toBe(50_000);
expect(DEFAULT_TERMINAL_SCROLLBACK_LINES).toBe(50_000);
expect(DEFAULT_TERMINAL_BUFFER_MAX_BYTES).toBe(2 * 1024 * 1024);
expect(DEFAULT_TERMINAL_BUFFER_TRIM_BYTES).toBe(1.5 * 1024 * 1024);
it('defaults raise tmux scrollback to 100k and terminal buffer cap to 32MB', () => {
expect(DEFAULT_TMUX_HISTORY_LIMIT).toBe(100_000);
expect(DEFAULT_TERMINAL_SCROLLBACK_LINES).toBe(100_000);
expect(DEFAULT_TERMINAL_BUFFER_MAX_BYTES).toBe(32 * 1024 * 1024);
expect(DEFAULT_TERMINAL_BUFFER_TRIM_BYTES).toBe(24 * 1024 * 1024);
});
it('passes valid in-range values through unchanged', () => {
@@ -80,9 +80,9 @@ describe('resolveTerminalHistoryConfig', () => {
});
it('caps the default trim to a lowered max', () => {
// Default trim (1.5MB) exceeds a 1MB max → trim must fall to the max.
const cfg = resolveTerminalHistoryConfig({ terminalBufferMaxBytes: 1 * 1024 * 1024 });
expect(cfg.terminalBufferTrimBytes).toBe(1 * 1024 * 1024);
// Default trim (24MB) exceeds a 2MB max → trim must fall to the max.
const cfg = resolveTerminalHistoryConfig({ terminalBufferMaxBytes: 2 * 1024 * 1024 });
expect(cfg.terminalBufferTrimBytes).toBe(2 * 1024 * 1024);
});
it('truncates fractional inputs to integers', () => {